package gudusoft.gsqlparser.nodes;

import gudusoft.gsqlparser.*;
import gudusoft.gsqlparser.compiler.TVariable;
import gudusoft.gsqlparser.resolver.TColumnTableMatch;
import gudusoft.gsqlparser.sqlenv.*;
import gudusoft.gsqlparser.stmt.TSelectSqlStatement;
import gudusoft.gsqlparser.util.keywordChecker;

import java.util.ArrayList;

/**
 * The qualified or unqualified name that identifies a database object.
 * The qualified name may includes those parts: server,database,schema,object,part and dblink.
 * This class represents database object in different database vendors such as Oracle, SQL Server in a uniform way.
 * <p>
 * The general syntax of database object in Oracle: [schema.]object[.part][@dblink]
 * <p>
 * The general syntax of database object in SQL Server: [server.][database.][schema.]object
 * <p>
 * The meaning of {@link #getObjectToken()} and {@link #getPartToken()} depends on the {@link #getDbObjectType()}.
 * If this database object is a schema object such as table, index, then the objectToken represents this
 * database object and partToken is null.
 * <p><p>
 * If this TObjectName represents a column, the partToken represents the column name, the objectToken is table/view
 * name of this column if this column is qualified like <code>table.column</code>, otherwise, the objectToken is
 * null.
 * <p>
 * schemaToken, databaseToken, serverToken is the qualified part of a database object name.
 * If this objectName represents a database name in the create database statement like this
 * <code>CREATE DATABASE menagerie</code>, then, the objectToken is menagerie and databaseToken is null.
 *
 * @see gudusoft.gsqlparser.EDbObjectType
 **/

public class TObjectName extends TParseTreeNode implements Cloneable{


    private TExceptReplaceClause exceptReplaceClause;

    public TExceptReplaceClause getExceptReplaceClause() {
        return exceptReplaceClause;
    }

    public void setExceptReplaceClause(TExceptReplaceClause exceptReplaceClause) {
        this.exceptReplaceClause = exceptReplaceClause;
    }
        
    private ETableKind tableKind = ETableKind.etkBase;

    public void setTableKind(ETableKind tableKind) {
        this.tableKind = tableKind;
    }

    public ETableKind getTableKind() {
        return tableKind;
    }

    TVariable linkedVariable = null;

    public void setLinkedVariable(TVariable linkedVariable) {
        this.linkedVariable = linkedVariable;
        this.dbObjectType = EDbObjectType.variable;
    }

    public TVariable getLinkedVariable() {
        return linkedVariable;
    }

    // 如果该对象表示一个字段，那么本属性表示该字段的数据来自那个源字段
    private TAttributeNode sourceAttributeNode;

    public void setSourceAttributeNode(TAttributeNode sourceAttributeNode) {
        this.sourceAttributeNode = sourceAttributeNode;
    }

    public TAttributeNode getSourceAttributeNode() {
        return sourceAttributeNode;
    }
//    private boolean isResolved = false;
//
//    public void setResolved(boolean resolved) {
//        isResolved = resolved;
//    }
//
//    public void setResolvedRelation(TTable resolvedRelation) {
//        this.resolvedRelation = resolvedRelation;
//        this.isResolved = true;
//    }
//
//    public boolean isResolved() {
//        return isResolved;
//    }
//
//    public TTable getResolvedRelation() {
//        return resolvedRelation;
//    }
//
//    private TTable resolvedRelation = null;

    public TObjectName clone(){
        TObjectName cloneObject = new TObjectName();
        cloneObject.dbObjectType = this.dbObjectType;
        cloneObject.dbvendor = this.dbvendor;

        if (this.partToken != null){
            cloneObject.partToken = this.partToken.clone();
        }
        if (this.objectToken != null){
            cloneObject.objectToken = this.objectToken.clone();
        }
        if (this.schemaToken != null){
        cloneObject.schemaToken = this.schemaToken.clone();
        }

        if (this.databaseToken != null){
            cloneObject.databaseToken = this.databaseToken.clone();
        }

        if (this.serverToken != null){
            cloneObject.serverToken = this.serverToken.clone();
        }

        if (this.propertyToken != null){
            cloneObject.propertyToken = this.propertyToken.clone();
        }

        if (this.methodToken != null){
            cloneObject.methodToken = this.methodToken.clone();
        }

        if (this.packageToken != null){
            cloneObject.packageToken = this.packageToken.clone();
        }

        cloneObject.numberOfPart = this.numberOfPart;

        return cloneObject;
    }

    private TObjectName parentObjectName;

    public void setParentObjectName(TObjectName parentObjectName) {
        this.parentObjectName = parentObjectName;
    }

    @Override
    public TObjectName getParentObjectName() {
        return parentObjectName;
    }

    public void setPath(TPathSqlNode path) {
        this.path = path;
        this.setEndToken(path.getEndToken());
    }

    /**
     *  stage path
     *
     * @return
     */
    public TPathSqlNode getPath() {
        return path;
    }

    private TPathSqlNode path;

//    private TObjectName cursorName;
//
//    public void setCursorName(TObjectName cursorName) {
//        this.cursorName = cursorName;
//    }
//
//    /**
//     * related cursor name if oracle for statement
//     * like: FOR emp_rec IN emp_cur
//     * @return
//     */
//    public TObjectName getCursorName() {
//        return cursorName;
//    }

    private ArrayList<TTable> sourceTableList = new ArrayList<>();

    /**
     * source table list for star column,
     * <br>select * from emp,dept
     * <br> * column will be list to both emp and dept table.
     * <br>
     * @return
     */
    public ArrayList<TTable> getSourceTableList() {
        return sourceTableList;
    }

    private boolean isImplicitSchema = false;
    private boolean isImplicitDatabase = false;

    public boolean isImplicitSchema() {
        return isImplicitSchema;
    }

    public boolean isImplicitDatabase() {
        return isImplicitDatabase;
    }

//    public void setOriginalQuery(TSelectSqlStatement originalQuery) {
//        this.originalQuery = originalQuery;
//    }
//
//    public TSelectSqlStatement getOriginalQuery() {
//        return originalQuery;
//    }
//
//    private TSelectSqlStatement originalQuery = null;

    private ArrayList<TAttributeNode> attributeNodesDerivedFromFromClause;

    /**
     * 这个属性只有当 column 为 * 时有效
     * 当 column 为 * 时， 本属性包含该 * 展开后对应的 attributeNode 列表，来源是 FROM CLAUSE中的 tables, 在 resolve star column
     * 时给本属性赋值， TStmtScope.resolve(TObjectName objectName)
     *
     * 当 table 有metadata或DDL给出了明确的字段时，每table个展开的 attributeNode 包含明确的字段名，such as t.c
     * 当 table 没有 metadata 和 DDL 时，每table个只展开的 一个 attributeNode，内容为 t.*
     *
     *
     * @return
     */
    public ArrayList<TAttributeNode> getAttributeNodesDerivedFromFromClause() {
        if (attributeNodesDerivedFromFromClause == null){
            attributeNodesDerivedFromFromClause = new ArrayList<TAttributeNode>();
        }
        return attributeNodesDerivedFromFromClause;
    }

    private ArrayList<TColumnTableMatch> candidateAttributeNodes;

    /**
     * 非 star column 使用该属性存放可能包含该 column 的 attributeNode
     * star column 使用 {@link #getAttributeNodesDerivedFromFromClause()}
     *
     * @return
     */
    public ArrayList<TColumnTableMatch> getCandidateAttributeNodes() {
        if (candidateAttributeNodes == null){
            candidateAttributeNodes = new ArrayList<TColumnTableMatch>();
        }
        return candidateAttributeNodes;
    }

    private TTableList candidateTables = null;

    public TTableList getCandidateTables() {
        if (candidateTables == null){
            candidateTables = new TTableList();
        }
        return candidateTables;
    }

    private boolean isOrphanColumn = false;

    public void setOrphanColumn(boolean orphanColumn) {
        isOrphanColumn = orphanColumn;
    }

    public boolean isOrphanColumn() {
        return isOrphanColumn;
    }

    private boolean isReservedKeyword = false;

    public boolean isReservedKeyword() {
        return isReservedKeyword;
    }

    private TColumnDefinition linkedColumnDef = null;

    public void setLinkedColumnDef(TColumnDefinition linkedColumnDef) {
        this.linkedColumnDef = linkedColumnDef;
    }

    /**
     * The column definition in create/alter table statement that include this column name object.
     * <pre>
     *     CREATE TABLE table_name (
     *       column1 datatype,
     *       column2 datatype
     *    );
     * </pre>
     * In above SQL, <code>column1 datatype</code> is the column definition while <code>column1</code> is this
     * object name.
     * @return column definition in create/alter table statement
     */
    public TColumnDefinition getLinkedColumnDef() {

        return linkedColumnDef;
    }

    private TObjectName namespace;

    public void setNamespace(TObjectName namespace) {
        this.namespace = namespace;
    }

    /**
     * The Couchbase namespace before keyspace
     * @return the namespace
     */
    public TObjectName getNamespace() {

        return namespace;
    }

    public String toString() {
        String ret = super.toString();

        if (ret != null) {
            if ((dbvendor == EDbVendor.dbvsnowflake) && (ret.toString().toLowerCase().startsWith("identifier("))){
                // snowflake identifier name: IDENTIFIER( { string_literal | session_variable | bind_variable | snowflake_scripting_variable } )
                // only return the string_literal part
                // https://www.sqlparser.com/bugs/mantisbt/view.php?id=3566
                return TBaseType.removeQuoteChar(getObjectString());
            }
            return ret;
        }

        if (getPartToken() != null) return getPartString();
        if (getObjectToken() != null ) return getObjectString();

        return  null;
    }

    public void setQuoteType(EQuoteType quoteType) {
        this.quoteType = quoteType;
    }

    /**
     * Tell whether this is a quoted objectName.
     * @return EQuoteType.squareBracket or EQuoteType.doubleQuote if this objectName is quoted.
     */
    public EQuoteType getQuoteType() {
        if (toString().startsWith("[")){
            return EQuoteType.squareBracket;
        }else if (toString().startsWith("\"")){
            return EQuoteType.doubleQuote;
        }else if (toString().startsWith("`")){
            return EQuoteType.backtick;
        }else
            return quoteType;
    }

    private EQuoteType quoteType = EQuoteType.notQuoted;
//    private String stringValue;



    /**
     * Internal use only
     */
    public int searchLevel = 0;

    public boolean isContinueToSearch(){
        // if column is in where clause, we can search 10 levels up

        // if column is in select list, only select one level up.
        // only search one level up, c:\prg\gsp_sqlfiles\TestCases\java\oracle\dbobject\berger_sqltest_04.sql

        if (this.getLocation() == ESqlClause.where) return (searchLevel < 10);
        else return (searchLevel < 1);
    }
    private TResultColumn sourceColumn;

    /**
     * Set the result column which include this column name. Used by parser internally.
     *
     * @param sourceColumn the result column includes this column name
     */
    public void setSourceColumn(TResultColumn sourceColumn) {
        this.sourceColumn = sourceColumn;
        this.setDbObjectTypeDirectly(EDbObjectType.column);
    }

    /**
     * The result column which include this column
     * <pre>
     *     select salary + 1000 from emp
     * </pre>
     * In the above SQL, <code>salary + 1000</code> is the result column while <code>salary</code> is this column name.
     *
     * @return the result column includes this column name
     */
    public TResultColumn getSourceColumn() {

        return sourceColumn;
    }

    private TTable sourceTable;

    /**
     * This column must be in this syntax: table.column, otherwise, this method always return false.
     * Match tableToken with the input pTable, compare the alias of pTable to tableToken at first,
     * If not the same, then compare the table name directly. This method can handle quoted name correctly.
     *
     * This method is used by parser internally.
     *
     * @param pTable table used to match {@link #getTableToken()} of this column object
     * @return true if input table is matched with tableToken of this column object
     */
    public boolean resolveWithThisTable(TTable pTable){
        boolean lcResult = false;
        if (getTableString().length() == 0) return false;
        if (pTable.getAliasName().length() > 0) {
            lcResult = pTable.checkTableByName(getTableString().toString()); //pTable.getAliasName().toString().equalsIgnoreCase(getTableString().toString());
            if ((!lcResult)&&(getSchemaString().length()>0)){
                lcResult = pTable.getAliasName().toString().equalsIgnoreCase(getSchemaString().toString());
                if (lcResult){
                    // table.column.field, table was recognized as schema in the parser, change the part token to property token
                    this.columnToProperty();
                }
            }
        }
        if (lcResult) return true;

        if (((pTable.isBaseTable()||(pTable.isCTEName()))&&(getTableToken() != null)&&(pTable.getTableName().getTableToken() != null))) {
            // lcResult = getTableToken().toUnQuotedString().equalsIgnoreCase(pTable.getTableName().getTableToken().toUnQuotedString());
            String s1 = TBaseType.getTextWithoutQuoted(getTableToken().toString());
            String s2 = TBaseType.getTextWithoutQuoted(pTable.getTableName().getTableToken().toString());
//            System.out.println("table1: "+s1);
//            System.out.println("table1: "+s2);
            lcResult = s1.equalsIgnoreCase(s2);

            if (lcResult && (!pTable.getPrefixDatabase().isEmpty()) && (!this.getDatabaseString().isEmpty()) && (!pTable.getPrefixDatabase().equalsIgnoreCase(this.getDatabaseString().toString()))) {
                // teradata: UPDATE foodmart.STRTOK_TIME A SET SYSTEM_DESK = testdatabase.STRTOK_TIME.SYSTEM_DESK
                // table STRTOK_TIME in testdatabase should be treat as the same one in foodmart
                lcResult = false;
            }


            if ((!lcResult)&&(getSchemaString().length()>0)){
               // lcResult = pTable.getTableName().getTableToken().toUnQuotedString().equalsIgnoreCase(getSchemaString().toString());
                lcResult = TBaseType.getTextWithoutQuoted(pTable.getTableName().getTableToken().toString()).equalsIgnoreCase(getSchemaString().toString());
                if (lcResult){
                    // table.column.field, table was recognized as schema in the parser, change the part token to property token
                    this.columnToProperty();
                }
            }
        }
        return lcResult;
    }

    /**
     * Check whether a column is prefixed by a table like this: <code>table.column</code>
     *
     * @return true if this column is in syntax like this: <code>table.column</code>
     */
    public boolean isQualified(){
        return (getTableString().length() > 0);
    }

    public int getValidate_column_status() {
        return validate_column_status;
    }

    public void setValidate_column_status(int validate_column_status) {
        this.validate_column_status = validate_column_status;
    }

    private int validate_column_status = TBaseType.CAN_BE_COLUMN_NOT_VALIDATE_YET;
    /**
     * Check whether a column name is syntax valid in a specific database vendor.
     * For example, in Oracle, <code>rowid</code> is not a valid column name.
     *
     * @param pDBVendor in which the database vendor the syntax of this column is checked
     * @return true if this objectName can be used as a column name in the specified database
     */
    public boolean isValidColumnName(EDbVendor pDBVendor){
       boolean lcResult = true;
       if (validate_column_status == TBaseType.VALIDATED_CAN_BE_A_COLUMN_NAME) return true;
       if (validate_column_status == TBaseType.VALIDATED_CAN_NOT_BE_A_COLUMN_NAME) return false;
       if (validate_column_status == TBaseType.MARKED_NOT_A_COLUMN_IN_COLUMN_RESOLVER) return false;
       if (validate_column_status == TBaseType.COLUMN_LINKED_TO_COLUMN_ALIAS_IN_OLD_ALGORITHM) return false;



       if ((getObjectType() == TObjectName.ttobjVariable)
               ||(getDbObjectType() == EDbObjectType.variable)
               ||(getObjectType() == TObjectName.ttobjColumnAlias)
               || (getDbObjectType() == EDbObjectType.xmlElement)
               || (getDbObjectType() == EDbObjectType.date_time_part)
               || (getDbObjectType() == EDbObjectType.constant)
               || (getDbObjectType() == EDbObjectType.function)
       ) {
            validate_column_status = TBaseType.VALIDATED_CAN_NOT_BE_A_COLUMN_NAME;
            return false;
        }

        if (pDBVendor == EDbVendor.dbvsybase){
            TSourceToken pt = getPartToken();
            if ( pt != null){
                if (pt.tokentype == ETokenType.ttdqstring){
                    //"0123", quoted string start with a number can't a column
                    if ((pt.toString().charAt(1) >= '0')
                            &&(pt.toString().charAt(1) <= '9')){
                        lcResult = false;
                    }else if (pt.toString().length() == 2){
                        //"", empty
                        lcResult = false;
                    }else if (pt.toString().substring(1,pt.toString().length()-1).trim().length() == 0){
                        //"  "
                        lcResult = false;
                    }
                }
            }
        }

        if (getPartToken() != null){
            if (getPartToken().tokentype == ETokenType.ttkeyword){

                switch (pDBVendor){
                    case dbvmssql:
                        //lcResult = this.getGsqlparser().getFlexer().canBeColumnName(getPartToken().tokencode);
                        lcResult = TLexerMssql.canBeColumnName(getPartToken().tokencode);
                        break;
                    case dbvsybase:
                        lcResult = !keywordChecker.isKeyword(getPartToken().toString(), EDbVendor.dbvsybase, "15.7", true);
                        break;
                    default:
                        break;
                }
            }
        }

        if ((toString().startsWith("@"))||((toString().startsWith(":"))&&(toString().indexOf(".")==-1)))
        {
            setObjectType(TObjectName.ttobjNotAObject);
            lcResult = false;
        }

        switch (pDBVendor){
            case dbvoracle:
                if ( //(getColumnNameOnly().compareToIgnoreCase ("rowid") == 0)||
                         (getColumnNameOnly().compareToIgnoreCase ("sysdate") == 0)
                        || (getColumnNameOnly().compareToIgnoreCase ("nextval") == 0)
                        || (getColumnNameOnly().compareToIgnoreCase ("rownum") == 0)
                        || (getColumnNameOnly().compareToIgnoreCase ("level") == 0)
                        || (getColumnNameOnly().compareToIgnoreCase ("user") == 0)
                ){
                    setObjectType(TObjectName.ttobjNotAObject);
                    lcResult = false;
                }
                if ((toString().startsWith(":"))&&(toString().indexOf(".") == -1))
                { // :bindv, but :new.column should not be enter here
                    setObjectType(TObjectName.ttobjNotAObject);
                    lcResult = false;
                }
                break;
            case dbvmssql:
                if ((getColumnNameOnly().compareToIgnoreCase ("system_user") == 0)
                ){
                    //setObjectType(TObjectName.ttobjNotAObject);
                    lcResult = false;
                }
                break;
            case dbvmysql:
                if (toString().startsWith("\"")){
                    // "X" is a string literal
                    lcResult = false;
                }
                if (keywordChecker.isKeyword(toString(),EDbVendor.dbvmysql,"6.0",true)){
                    isReservedKeyword = true;
                    lcResult = false;
                }
                break;
            case dbvteradata:
                if ((getObjectString().length() == 0)&&((getColumnNameOnly().compareToIgnoreCase ("account") == 0)
                        ||(getColumnNameOnly().compareToIgnoreCase ("current_date") == 0)
                        ||(getColumnNameOnly().compareToIgnoreCase ("current_role") == 0)
                        ||(getColumnNameOnly().compareToIgnoreCase ("current_time") == 0)
                        ||(getColumnNameOnly().compareToIgnoreCase ("current_timestamp") == 0)
                        ||(getColumnNameOnly().compareToIgnoreCase ("current_user") == 0)
                        ||(getColumnNameOnly().compareToIgnoreCase ("database") == 0)
                        ||((getColumnNameOnly().compareToIgnoreCase ("date") == 0)&&( this.getDbObjectType() != EDbObjectType.column ))
                        ||(getColumnNameOnly().compareToIgnoreCase ("profile") == 0)
                        ||(getColumnNameOnly().compareToIgnoreCase ("role") == 0)
                        ||(getColumnNameOnly().compareToIgnoreCase ("session") == 0)
                        ||(getColumnNameOnly().compareToIgnoreCase ("time") == 0)
                        ||(getColumnNameOnly().compareToIgnoreCase ("user") == 0)
                        ||(getColumnNameOnly().compareToIgnoreCase ("sysdate") == 0)
                )){
                    lcResult = false;
                }
                break;
            case dbvpostgresql:
                if (toString().startsWith("$")){
                    if ((toString().charAt(1) >= '0')
                            &&(toString().charAt(1) <= '9')){
                        this.setDbObjectType(EDbObjectType.variable);
                        lcResult = false;
                    }
                }
                break;
            case dbvbigquery:
                if ((getColumnNameOnly().compareToIgnoreCase ("CURRENT_DATE") == 0)
                         ||(getColumnNameOnly().compareToIgnoreCase ("CURRENT_TIME") == 0)
                        ||(getColumnNameOnly().compareToIgnoreCase ("CURRENT_TIMESTAMP") == 0)
                ){
                    //setObjectType(TObjectName.ttobjNotAObject);
                    lcResult = false;
                }
                break;
        }

       if(lcResult){
           validate_column_status = TBaseType.VALIDATED_CAN_BE_A_COLUMN_NAME;
       }else{
           validate_column_status = TBaseType.VALIDATED_CAN_NOT_BE_A_COLUMN_NAME;
       }

       return lcResult;

    }

    private boolean expandStarColumns = false;
    ArrayList<String> expandedStarColumns = new ArrayList<>();

    public ArrayList<String> getColumnsLinkedToStarColumn() {
        if (expandStarColumns) return expandedStarColumns;

        //TTable sourceTable = this.getSourceTable();
        if (getSourceTableList().size() > 0){
            for( int i = 0;i < getSourceTableList().size();i++){
                for(String c:getSourceTableList().get(i).getExpandedStarColumns()){
                    expandedStarColumns.add(c);
                }
            }
        }

        expandStarColumns = true;
        return expandedStarColumns;

    }

    private ArrayList<String> columnsLinkedToStarColumn = new ArrayList<String>();

    private TResultColumnList columnsLinkedToStar;

    public void setColumnsLinkedToStar(TResultColumnList columnsLinkedToStar) {
        this.columnsLinkedToStar = columnsLinkedToStar;
        for(TResultColumn rc:columnsLinkedToStar){
            if (rc.getColumnAlias()!= ""){
                columnsLinkedToStarColumn.add(rc.getColumnAlias());
            }else{
                columnsLinkedToStarColumn.add(rc.getColumnNameOnly());
            }
        }

        this.setDbObjectTypeDirectly(EDbObjectType.column);
    }

    /**
     * if this is a star column(column name is *), and the value of this star column
     * is derived from a subquery, then, this field points to the select list in the subquery
     *
     * @return the select list in the subquery
     */
    public TResultColumnList getColumnsLinkedToStar() {
        return columnsLinkedToStar;
    }

    /**
     * Set the table this column belongs to. Used by parser internally.
     *
     * @param sourceTable table contains this column
     */
    public void setSourceTable(TTable sourceTable) {
        this.sourceTable = sourceTable;

        // 如果 column token 的 tokentype 为 ETokenType.ttkeyword， 那么调整为 ETokenType.ttidentifier
        if ((this.getPartToken() != null)&&(this.getPartToken().tokentype == ETokenType.ttkeyword)){
            if ((this.getPartToken().getDbObjectType() == EDbObjectType.column)||(this.getPartToken().getDbObjectType() == EDbObjectType.unknown)){
                this.getPartToken().tokentype = ETokenType.ttidentifier;
            }
        }
        this.setDbObjectTypeDirectly(EDbObjectType.column);
    }

    public void setSourceTable2(TCustomSqlStatement sqlStatement, TAttributeNode attributeNode, TTable newSourceTable) {
        // 如果 column token 的 tokentype 为 ETokenType.ttkeyword， 那么调整为 ETokenType.ttidentifier
        if ((this.getPartToken() != null)&&(this.getPartToken().tokentype == ETokenType.ttkeyword)){
            if ((this.getPartToken().getDbObjectType() == EDbObjectType.column)||(this.getPartToken().getDbObjectType() == EDbObjectType.unknown)){
                this.getPartToken().tokentype = ETokenType.ttidentifier;
            }
        }

        if ((this.sourceTable != null) && (this.sourceTable.equals(newSourceTable))) return;

        if ((this.getResolveStatus() == TBaseType.RESOLVED_AND_FOUND ) 
                || (newSourceTable.getTableType() != ETableSource.subquery)){// 关联到 subquery 的 column 本能算真正找到 table，因此还不能去掉 orphan column
            if (sqlStatement.getOrphanColumns().removeElement(this)){
                if (TBaseType.DUMP_RESOLVER_LOG_TO_CONSOLE){
                    TBaseType.log(String.format("Remove orphan column <%s> find in old algorithm",this.toString()),TLog.WARNING,this);
                }
                // remove the waring in sql statement's error syntax list
                TCustomSqlStatement currentStatement = sqlStatement;
                while (currentStatement != null) {
                    if (currentStatement.getSyntaxHints() != null) {
                        for(int i=0; i<currentStatement.getSyntaxHints().size(); i++) {
                            TSyntaxError syntaxError = currentStatement.getSyntaxHints().get(i);
                            if (syntaxError.errortype == EErrorType.sphint) {
                                if ((syntaxError.lineNo == this.getStartToken().lineNo)||(syntaxError.columnNo == this.getStartToken().columnNo)) {
                                    currentStatement.getSyntaxHints().remove(i);
                                    if (TBaseType.DUMP_RESOLVER_LOG_TO_CONSOLE){
                                        TBaseType.log(String.format("Remove orphan column <%s> warning message in old algorithm", this.toString()), TLog.WARNING, this);
                                    }
                                    break;
                                }
                            }
                        }
                    }
                    currentStatement = currentStatement.getParentStmt();
                }
            }
        }else{
            TBaseType.log(String.format("Found orphan column <%s> find in old algorithm in subquery %s, but NOT remove it from orphan list",this.toString(),newSourceTable.getAliasName()),TLog.WARNING,this);
        }

        if (this.sourceTable != null){
            if (this.sourceTable.getLinkedColumns().removeElement(this)){
                if (TBaseType.DUMP_RESOLVER_LOG_TO_CONSOLE){
                    TBaseType.log(String.format("Remove <%s> at addr: %s from table <%s> that found in old algorithm, new linked table is: %s"
                            ,this.toString(),Integer.toHexString(this.hashCode()),this.sourceTable.toString(),newSourceTable.toString())
                            ,TLog.WARNING,this);
                }
            }
        }
        this.sourceTable = newSourceTable;
        this.sourceTable.getLinkedColumns().addObjectName(this);

        if (this.getSourceColumn() == null){
           // if (attributeNode.isAttributeCreatedFromAliasColumn()){
                this.setSourceColumn(attributeNode.getSubLevelResultColumn());
           // }
        }

        this.setDbObjectTypeDirectly(EDbObjectType.column);
    }

    /**
     * The table this column belongs to. Only valid when this objectName represents a column.
     * <p>
     * Please check getTableColumn demo shipped together with this library to find out more information
     * such as column impact and data lineage of the table and column in the SQL script.
     *
     * @return table this column belongs to
     */
    public TTable getSourceTable() {
        return sourceTable;
    }

    public void setResolveStatus(int resolveStatus) {
        this.resolveStatus = resolveStatus;

        if (this.resolveStatus == TBaseType.RESOLVED_AND_FOUND){
            this.setDbObjectTypeDirectly(EDbObjectType.column);
        }

    }

    private int resolveStatus = TBaseType.NOT_RESOLVED_YET;

    public int getResolveStatus() {
        return resolveStatus;
    }

    public void   TObjectName(){

    }

    private TObjectNameList columnAttributes = null;

    private boolean  subscripts;
    private  TIndirection indirection;

    /**
     * PostgreSQL column with array types
     * <pre>
     *     CREATE TABLE sal_emp (
     *          name            text,
     *          pay_by_quarter  integer[],
     *          schedule        text[][]
     *     );
     * </pre>
     * In the above SQL, this method returns true for <code>pay_by_quarter</code> column.
     *
     * @return true if this objectName is array type
     */
    public boolean isSubscripts() {
        return subscripts;
    }

    public void setIndirection(TIndirection indirection) {
        if(indirection == null) return;

        this.indirection = indirection;
        // setup the exceptReplaceClause of the last indirection to the parent object which is set in the .y bnf file
        if (indirection.getIndices() != null){
            if (indirection.getIndices().getElement(indirection.getIndices().size()-1).getAttributeName() != null){
                setExceptReplaceClause(indirection.getIndices().getElement(indirection.getIndices().size()-1).getAttributeName().getExceptReplaceClause());

            }
        }

        // possible syntax, support in postgresql only in current version:
        // [ indirection ], list in [] was indirection
        //
        // tablename[.column]
        // tablename[.*]
        // $1[.somecolumn]
        //
        // mytable[.arraycolumn[4]]
        // mytable[.two_d_column[17][34]]
        // $1[[10:42]]
        //

        if (this.getObjectType() == TObjectName.ttobjPositionalParameters){
            if(indirection.isRealIndices()){
                //$1[10:42]
                this.subscripts = true;
            }else{
                //$1.somecolumn
               this.setColumnTokenOfPositionalParameters(indirection.getIndices().getElement(0).getAttributeName().getPartToken());
            }
        }else{
            if(indirection.isRealIndices()){
                if (indirection.getIndices().size() == 1){
                    // arraycolumn[4]
                    this.subscripts = true;
                }else if (indirection.getIndices().size() >= 2){
                   if (!indirection.getIndices().getElement(0).isRealIndices()){
                        // mytable[.arraycolumn[4]]
                        // mytable[.two_d_column[17][34]]
                     //  this.setPartTokenOfIndirection(indirection.getIndices().getElement(0).getAttributeName().getPartToken());
                       this.subscripts = true;
                     //  this.indirection.getIndices().remove(0);
                   }
                }
            }

            //else{
                // 首先查找 : 和 [ 分隔符，如果找到，在该分隔符前的是 column，如果没有找到按照一般 qualified name 规则处理
                // https://docs.snowflake.com/en/user-guide/querying-semistructured.html
                int elementIndex = -1;
                for(int i=0;i<indirection.getIndices().size();i++){
                    TIndices tmp = indirection.getIndices().getElement(i);
                    if ((tmp.getStartToken().tokencode == ':')||(tmp.getStartToken().tokencode == '[')||(tmp.getStartToken().tokencode == TBaseType.bind_v)){
                        elementIndex = i;
                        break;
                    }
                }
                if (elementIndex >= 0){
                    // 找到了 : 和 [ 分隔符
                    if (elementIndex == 0){
                        // snowflake, <column>:<level1_element>
                        // everything already perfect, nothing need to be changed
                        partToken.setDbObjectType(EDbObjectType.column);
                    }else if (elementIndex == 1){
                        // snowflake, table.column:<level1_element>
                        objectToken = partToken;
                        objectToken.setDbObjectType(EDbObjectType.table);
                        partToken = indirection.getIndices().getElement(elementIndex-1).getAttributeName().getPartToken();
                        partToken.setDbObjectType(EDbObjectType.column);
                    }else if (elementIndex == 2){
                        // snowflake, schema.table.column:<level1_element>
                        schemaToken = partToken;
                        schemaToken.setDbObjectType(EDbObjectType.schema);
                        objectToken = indirection.getIndices().getElement(elementIndex-2).getAttributeName().getPartToken();
                        objectToken.setDbObjectType(EDbObjectType.table);
                        partToken = indirection.getIndices().getElement(elementIndex-1).getAttributeName().getPartToken();
                        partToken.setDbObjectType(EDbObjectType.column);
                    }
                }else{
                    // 一般 qualified name 规则处理
                    if (indirection.getIndices().size() == 1){
                        this.setPartTokenOfIndirection(indirection.getIndices().getElement(0).getAttributeName().getPartToken());
                    }else if (indirection.getIndices().size() == 2){
                        schemaToken = partToken;
                        schemaToken.setDbObjType(TObjectName.ttobjSchemaName);
                        objectToken = indirection.getIndices().getElement(0).getAttributeName().getPartToken();
                        objectToken.setDbObjType(ttobjTable);
                        partToken = indirection.getIndices().getElement(1).getAttributeName().getPartToken();
                        partToken.setDbObjType(ttobjColumn);
                    }else if (indirection.getIndices().size() == 3){
                        // db.schema.tablename.column
                        databaseToken = partToken;
                        databaseToken.setDbObjectType(EDbObjectType.database);
                        partToken = indirection.getIndices().getElement(2).getAttributeName().getPartToken();
                        partToken.setDbObjectType(EDbObjectType.column);
                        objectToken = indirection.getIndices().getElement(1).getAttributeName().getPartToken();
                        objectToken.setDbObjectType(EDbObjectType.table);
                        schemaToken = indirection.getIndices().getElement(0).getAttributeName().getPartToken();
                        schemaToken.setDbObjectType(EDbObjectType.schema);
                    }
                }

//                if (indirection.getIndices().size() == 1){
//                    if ((indirection.getIndices().getElement(0).getStartToken().tokencode == ':')
//                        ||(indirection.getIndices().getElement(0).getStartToken().tokencode == TBaseType.bind_v))
//                    {
//                        // snowflake, <column>:<level1_element>
//
//                    }else{
//                        // tablename[.column]
//                        // tablename[.*]
//                        this.setPartTokenOfIndirection(indirection.getIndices().getElement(0).getAttributeName().getPartToken());
//                    }
//                }else if (indirection.getIndices().size() == 2){
//                    if ((indirection.getIndices().getElement(0).getStartToken().tokencode == ':')
//                            ||(indirection.getIndices().getElement(0).getStartToken().tokencode == TBaseType.bind_v))
//                    {
//                        // snowflake, <column>:<level1_element>
//
//                    }else {
//                        // schema.tablename.column
//                        schemaToken = partToken;
//                        schemaToken.setDbObjType(TObjectName.ttobjSchemaName);
//                        objectToken = indirection.getIndices().getElement(0).getAttributeName().getPartToken();
//                        objectToken.setDbObjType(ttobjTable);
//                        partToken = indirection.getIndices().getElement(1).getAttributeName().getPartToken();
//                        partToken.setDbObjType(ttobjColumn);
//                    }
//                }else if (indirection.getIndices().size() == 3){
//                    // db.schema.tablename.column
//                    databaseToken = partToken;
//                    databaseToken.setDbObjectType(EDbObjectType.database);
//                    partToken = indirection.getIndices().getElement(2).getAttributeName().getPartToken();
//                    partToken.setDbObjectType(EDbObjectType.column);
//                    objectToken = indirection.getIndices().getElement(1).getAttributeName().getPartToken();
//                    objectToken.setDbObjectType(EDbObjectType.table);
//                    schemaToken = indirection.getIndices().getElement(0).getAttributeName().getPartToken();
//                    schemaToken.setDbObjectType(EDbObjectType.schema);
//                }

          //  }

        }

    }

    /**
     * Array element of this objectName
     * <pre>
     *     select arraycolumn[4] from t;
     * </pre>
     * In the above SQL, this method returns <code>[4]</code> of this objectName.
     *
     * @return array element of this objectName
     * @see gudusoft.gsqlparser.nodes.TIndirection
     */
    public TIndirection getIndirection() {
        return indirection;
    }

    private void setPartTokenOfIndirection(TSourceToken column){
        parseTablename();
        this.partToken = column;
        this.partToken.setDbObjType(ttobjColumn);
    }

    public void setPropertyToken(TSourceToken propertyToken) {
        this.propertyToken = propertyToken;
    }

    public TSourceToken getAtsign() {
        return atsign;
    }

    public TSourceToken getMethodToken() {

        return methodToken;
    }

    public TSourceToken getPropertyToken() {
        return propertyToken;
    }

    /**
     *  The server part of this objectName: [server.][database.][schema.]object
     *
     * @return server part of the objectName
     */
    public TSourceToken getServerToken() {
        return serverToken;
    }

    public TSourceToken getExclamationmark() {

        return exclamationmark;
    }

    /**
     *
     * The database link part <code>remoreserver</code> in this objectName: scott.emp@remoreserver
     *
     * @return database link
     */
    public TObjectName getDblink() {

        return dblink;
    }

    /**
     *  The database part of this objectName: [server.][database.][schema.]object
     *
     * @return database part of the objectName
     */
    public TSourceToken getDatabaseToken() {
        return databaseToken;
    }


    private boolean tableDetermined = true;

    public void setTableDetermined(boolean tableDetermined) {
        this.tableDetermined = tableDetermined;
    }


    /**
     * Sometime, a non-qualified column can't be linked to a table without additional metadata from database.
     * <pre>
     *     select name from emp, dept
     * </pre>
     * In the above SQL, the <code>name</code> column can't be determined which table it belongs to.
     *
     * Below is a more complicated SQL that shows the relationship between column and table.
     * <pre>
     *   select
     *          s2.s2t1a1,
     *          s3.s3t1a1
     *   from
     *       (
     *         select *
     *           from subselect2table1 s2t1
     *       ) s2,
     *       (
     *          select *
     *             from  subselect3table1, subselect3table2
     *       ) s3
     * </pre>
     *
     * column s2t1a1 was linked to subselect2table1, {@link #isTableDetermined()} returns true for this column.
     * <br> column s3t1a1 was linked to both subselect3table1 and subselect3table2
     * due to lack of meta information from database, {@link #isTableDetermined()} returns false for this column.
     * <p>
     * Provide database metadata will help GSP links the column to the table correctly.
     *
     * @return true if this column can be linked to a table without doubt.
     * @see gudusoft.gsqlparser.TGSqlParser#setMetaDatabase
     */
    public boolean isTableDetermined() {
        return tableDetermined;
    }

    /**
     * used in Oracle and teradata SQL syntax
     * <p>teradata:
     * <p>column.attribute()
     * <p>column.attribute().attribute() 
     * @param attributes
     */
    public void attributesToPropertyToken(TObjectNameList attributes){
        if (attributes.size() == 1){
            this.propertyToken = attributes.getObjectName(0).getPartToken();
        }
    }

    public void setColumnAttributes(TObjectNameList columnAttributes) {
        this.columnAttributes = columnAttributes;
    }

    /**
     * The data type of this column is structured UDT, this method returns the column's attributes.
     * Below is the sample SQL from <a href="https://info.teradata.com/HTMLPubs/DB_TTU_16_00/index.html#page/SQL_Reference/B035-1146-160K/fyj1472240813334.html">teradata</a>.
     * <pre>
     *
     *          CREATE TYPE school_record AS (
     *           school_name VARCHAR(20),
     *           GPA         FLOAT);
     *
     *          CREATE TYPE college_record AS (
     *           school school_record,
     *           major  VARCHAR(20),
     *           minor  VARCHAR(20));
     *
     *          CREATE TABLE student_record (
     *           student_id  INTEGER,
     *           Last_name   VARCHAR(20),
     *           First_name  VARCHAR(20),
     *           high_school school_record,
     *           college     college_record);
     *
     *          SELECT student_id, last_name, first_name,
     *           high_school.school_name(), high_school.GPA(),
     *           college.school().school_name(), college.school().GPA(),
     *           college.major(), college.minor()
     *          FROM student_record;
     *
     *          SELECT *.ALL FROM student_record;
     *          SELECT student_record.*.ALL;
     * </pre>
     * Take this column <code>college.school().school_name()</code> for example, the partToken of this objectName
     * should be <code>college</code>, and the value returned by this method should be
     * <code>school().school_name()</code>
     * <p>
     * PLEASE NOTE THAT CURRENT VERSION CAN'T HANDLE THE ABOVE SQL CORRECTLY.
     *
     * @return attributes of this structured UDT column
     */
    public TObjectNameList getColumnAttributes() {
        return columnAttributes;
    }

    /**
     * Used internally.
     * @deprecated use {@link #setDbObjectType} instead
     *
     * @param objectType object type of this objectName
     */
    public void setObjectType(int objectType) {
        if (this.objectType == objectType) return;
        this.objectType = objectType;
        // set this object type to source token
        switch(this.getObjectType()){
            case TObjectName.ttobjTable:
           // case TObjectName.ttobjTableTemp:
            //    case TObjectName.ttobjTableVar:
                this.parseTablename();
                this.objectToken.setDbObjType(this.objectType);
                if (dbObjectType != EDbObjectType.stage){ // not already set to stage
                    dbObjectType = EDbObjectType.table;
                }

                if ((!TSQLEnv.supportSchema(this.dbvendor))&&(this.schemaToken != null)){
                    this.databaseToken = this.schemaToken;
                    this.schemaToken = null;
                }
                break;
//            case TObjectName.ttobjTableCTE:
//                this.parseTablename();
//                this.objectToken.setDbObjType(this.objectType);
//                dbObjectType = EDbObjectType.cte;
//                break;
//            case ttObjLibrary:
//                this.parseTablename();
//                this.objectToken.setDbObjType(this.objectType);
//                dbObjectType = EDbObjectType.library;
//                break;
            case TObjectName.ttobjColumn:
                this.partToken.setDbObjType(this.objectType);
                dbObjectType = EDbObjectType.column;
                break;
            case TObjectName.ttobjColumnAlias:
                if ((this.objectToken == null) && (this.partToken != null)){
                   this.parseObjectName();
                }
                this.objectToken.setDbObjType(this.objectType);
                dbObjectType = EDbObjectType.column_alias;
                break;
//            case TObjectName.ttObjTableAlias:
//                this.parseObjectName();
//                this.objectToken.setDbObjType(this.objectType);
//                dbObjectType = EDbObjectType.table_alias;
//                break;
            case TObjectName.ttobjParameter:
                this.parseObjectName();
                this.objectToken.setDbObjType(this.objectType);
                dbObjectType = EDbObjectType.parameter;
                break;
            case TObjectName.ttobjVariable:
                this.parseVariableName();
                this.objectToken.setDbObjType(this.objectType);
                dbObjectType = EDbObjectType.variable;
                break;
            case TObjectName.ttobjColumnMethod:
                if (dbObjectType != EDbObjectType.method){
                    this.parseColumnMethodName();
                    this.partToken.setDbObjType(this.ttobjColumn);
                    this.methodToken.setDbObjType(this.ttobjColumnMethod);
                    dbObjectType = EDbObjectType.method;
                }
                break;
//            case TObjectName.ttobjProcedureName:
//                this.parseFunctionName();
//                this.objectToken.setDbObjType(this.objectType);
//                dbObjectType = EDbObjectType.procedure;
//                break;
            case TObjectName.ttobjFunctionName:
                this.parseFunctionName();
                this.objectToken.setDbObjType(this.objectType);
                dbObjectType = EDbObjectType.function;
                break;
//            case TObjectName.ttobjLabelName:
//                this.parseObjectName();
//                this.objectToken.setDbObjType(this.objectType);
//                dbObjectType = EDbObjectType.label;
//                break;
//            case TObjectName.ttobjIndexName:
//                this.parseObjectName();
//                this.objectToken.setDbObjType(this.objectType);
//                dbObjectType = EDbObjectType.index;
//                break;
//            case TObjectName.ttobjMaterializedViewName:
//                this.parseObjectName();
//                this.objectToken.setDbObjType(this.objectType);
//                dbObjectType = EDbObjectType.materializedView;
//                break;
//            case TObjectName.ttobjViewName:
//                this.parseObjectName();
//                this.objectToken.setDbObjType(this.objectType);
//                dbObjectType = EDbObjectType.view;
//                break;
//            case TObjectName.ttobjCursorName:
//                this.parseObjectName();
//                this.objectToken.setDbObjType(this.objectType);
//                dbObjectType = EDbObjectType.cursor;
//                break;
            case TObjectName.ttobjConstraintName:
                this.parseObjectName();
                this.objectToken.setDbObjType(this.objectType);
                dbObjectType = EDbObjectType.constraint;
                break;
//            case TObjectName.ttobjPropertyName:
//                this.propertyToken.setDbObjType(this.objectType);
//                dbObjectType = EDbObjectType.property;
//                break;
//            case TObjectName.ttobjTransactionName:
//                this.parseObjectName();
//                this.objectToken.setDbObjType(this.objectType);
//                dbObjectType = EDbObjectType.transaction;
//                break;
//            case TObjectName.ttobjDatabaseName:
//                this.parseObjectName();
//                this.objectToken.setDbObjType(this.objectType);
//                dbObjectType = EDbObjectType.database;
//                break;
            case TObjectName.ttobjStringConstant:
                this.parseObjectName();
                this.objectToken.setDbObjType(this.objectType);
                break;
//            case TObjectName.ttobjAliasName:
//                this.parseObjectName();
//                this.objectToken.setDbObjType(this.objectType);
//                dbObjectType = EDbObjectType.alias;
//                break;
            case TObjectName.ttobjAttribute:
                this.partToken.setDbObjType(this.objectType);
                dbObjectType = EDbObjectType.attribute;
                break;
//           case TObjectName.ttobjTypeName:
//               this.parseObjectName();
//               this.objectToken.setDbObjType(this.objectType);
//               dbObjectType = EDbObjectType.user_defined_type;
//               break;
//            case TObjectName.ttobjPackage:
//                this.parseObjectName();
//                this.objectToken.setDbObjType(this.objectType);
//                dbObjectType = EDbObjectType.plsql_package;
//                break;
//            case TObjectName.ttobjSequence:
//                this.parseObjectName();
//                this.objectToken.setDbObjType(this.objectType);
//                dbObjectType = EDbObjectType.sequence;
//                break;
//            case TObjectName.ttobjTrigger:
//                this.parseObjectName();
//                this.objectToken.setDbObjType(this.objectType);
//                dbObjectType = EDbObjectType.trigger;
//                break;
            default:
                break;
        }
    }

    public void setDbObjectType(EDbVendor dbVendor, EDbObjectType dbObjectType) {
        this.dbvendor = dbVendor;
        this.setDbObjectType(dbObjectType);
    }

    public void setDbObjectTypeDirectly(EDbObjectType dbObjectType) {
        this.dbObjectType = dbObjectType;
    }
    /**
     * Set object type of this objectName
     *
     * @param dbObjectType database object type
     */
    public void setDbObjectType(EDbObjectType dbObjectType) {
        if (this.dbObjectType == dbObjectType) return;
        if (this.dbObjectType == EDbObjectType.stage) return;
        // TODO, 如果已经被设定为某个对象类型，不应该再次设置，但如果下面的语句执行，会导致部分测试用例失败，需要查具体原因
        // if (this.dbObjectType != EDbObjectType.unknown) return;

        EDbObjectType prev = this.dbObjectType;
        this.dbObjectType = dbObjectType;
        if (prev == EDbObjectType.unknown){
            switch (dbObjectType){
                case column:
                    parseColumnName();
                    break;
                case table:
                case index:
                case synonym:
                case macro:
                case view:
                case stage:
                case task:
                case stream:
                case TEMP_TABLE:
                case pipe:
                case security_policy:

                case plsql_package:
                case trigger:
                case transaction:
                case user_defined_type:
                case property:
                case cursor:
                case label:
                case table_alias:
                case partitionScheme:
                    parseTablename();
                    break;
                case library:
                    parseTablename();
                    break;
                case function:
                    parseFunctionName();
                    break;
                case procedure:
                case materializedView:
                    parseFunctionName();
                    break;
                case alias:
                case module:
                case sequence:
                    parseTablename();
                    break;
                case database:
                    this.objectToken = this.partToken;
                    this.databaseToken = null;
                    this.partToken = null;
                    break;
                case variable:
                    parseVariableName();
                    break;
                case schema:
                    this.databaseToken = this.objectToken;
                    this.objectToken = this.partToken;
                    this.schemaToken = this.partToken;
                    break;
                case method:
                    this.parseColumnMethodName();
                    this.partToken.setDbObjType(this.ttobjColumn);
                    //this.methodToken.setDbObjType(this.ttobjColumnMethod);
                    this.methodToken.setDbObjectType(EDbObjectType.method);
                    break;
                case cte:
                    parseObjectName();
                    break;
                default:
                    break;
            }
        }
    }

    private EDbObjectType dbObjectType = EDbObjectType.unknown;

    /**
     * The database object type of this objectName such as table, view, column for example.
     * If object type is {@link gudusoft.gsqlparser.EDbObjectType#column}, {@link #getPartToken} represents
     * the column name, for all other object type, the name of this database object is stored in {@link #getObjectToken}
     *
     * @return database object type
     */
    public EDbObjectType getDbObjectType() {
        return dbObjectType;
    }

    /**
     * @deprecated use {@link #getDbObjectType()} instead.
     *
     * @return the type of database object or variable this objectName represents for.
     */
    public int getObjectType() {

        return objectType;
    }


    public void setAtsign(TSourceToken atsign) {
        this.atsign = atsign;
    }

    public void setDblink(TObjectName dblink) {
        dblink.setDbObjectType(EDbObjectType.dblink);
        this.dblink = dblink;
    }

    public void setDblink(TObjectName dblink, boolean linkToDB) {
        setDblink(dblink);

        if (linkToDB){
            if (dblink.numberOfPart == 1){
                this.databaseToken = dblink.getPartToken();
            }
        }
    }

    private TSourceToken serverToken = null; //sql server
    private TSourceToken databaseToken = null; //sql server
    // schemaToken.objectToken.partToken@dblink, schemaToken, partToken, and dblink is optional
    private TSourceToken schemaToken;
    private TSourceToken objectToken;

    /*
     * part is a part of the object. This identifier lets you refer to a part of a schema object,
     * such as a column or a partition of a table. Not all types of objects have parts.
     */
    private TSourceToken partToken;
    private TSourceToken propertyToken = null;
    private TSourceToken methodToken = null;
    private TSourceToken atsign; //@
    private TObjectName dblink;

    public void setServerToken(TSourceToken serverToken) {
        this.serverToken = serverToken;
    }

    public void setDatabaseToken(TSourceToken databaseToken, boolean implicit) {
        this.isImplicitDatabase = implicit;
        setDatabaseToken(databaseToken);
    }

    public void setDatabaseToken(TSourceToken databaseToken) {
        this.databaseToken = databaseToken;
    }

    public void setObjectToken(TSourceToken objectToken) {
        this.objectToken = objectToken;
    }

    public void setPartToken(TSourceToken partToken) {
        this.partToken = partToken;
    }

    public void setMethodToken(TSourceToken methodToken) {
        this.methodToken = methodToken;
    }

    public void setSchemaToken(TSourceToken schemaToken, boolean implicit) {
        this.isImplicitSchema = implicit;
        setSchemaToken(schemaToken);
    }

    public void setSchemaToken(TSourceToken schemaToken) {

        this.schemaToken = schemaToken;
    }

    public void setPackageToken(TSourceToken packageToken) {
        this.packageToken = packageToken;
    }

    /**
     * Oracle package name
     *
     * @return the source token of Oracle package name.
     */
    public TSourceToken getPackageToken() {
        return packageToken;
    }

    private TSourceToken packageToken = null;


    /**
     * The object part of this objectName such as table name, view name.
     *
     * @return object part of this objectName
     */
    public TSourceToken getObjectToken() {
        return objectToken;
    }

    /**
     * The column name of this objectName if {@link #getDbObjectType} is {@link EDbObjectType#column}.
     * {@link #getColumnToken} returns the same value.
     *
     * @return the column name
     */
    public TSourceToken getPartToken() {
        return partToken;
    }

    /**
     * The schema name of this objectName.
     *
     * @return schema name
     */
    public TSourceToken getSchemaToken() {
        return schemaToken;
    }


    private String schemaString;
    private String objectString;
    private String partString;

    /**
     * String text of the package name.
     *
     * @return string of the package name,return null if empty.
     */
    public String getPackageString(){
        if (getPackageToken() != null) return  getPackageToken().toString();
        else return "";
    }

    /**
     * String text of the server name
     *
     * @return string of the server name,return null if empty.
     */
    public String getServerString(){
        if (getServerToken() != null) return  getServerToken().toString();
        else return "";
    }

    /**
     * String text of the database name
     *
     * @return string of the database name,return null if empty.
     */
    public String getDatabaseString(){
        if (isImplicitDatabase ) return "";
        else if (getDatabaseToken() != null) return getDatabaseToken().toString();
        else if ((this.dbObjectType == EDbObjectType.database) && (getObjectToken() != null)){
            return getObjectToken().toString();
        }
        else return "";
    }

    /**
     * String text of schema name in a qualified name of a schema object.
     *
     *
     * @return string of schema name, return null if empty.
     */
    public String getSchemaString() {
        if (isImplicitSchema) return "";
        else if (schemaToken != null)
            return schemaToken.astext;
        else
            return "" ;
    }

    private TSQLEnv sqlEnv = null;

    public void setSqlEnv(TSQLEnv sqlEnv) {
        this.sqlEnv = sqlEnv;
    }



    /**
     * This is the schema fetched from the SQLEnv. Not the direct qualified schema name of this object
     * search this table in the current default database and schema.
     *
     * If this is a qualified schema object, then return {@link #getSchemaString()}
     *
     * This method is only valid when the {@link #dbObjectType} is a schema object.
     *
     * @return schema name fetched from the SQLEnv
     */
    public String getImplictSchemaString() {
        String implictSchema = null;
        if (this.implictSchemaName != null) return this.implictSchemaName;

        if (schemaToken != null) return schemaToken.toString();
        if (getSchemaString().length() > 0) return  getSchemaString();

        if (sqlEnv == null) return null;

        TSQLSchema s = searchImplicitSchema();
        if (s != null){
            implictSchema = s.getName();
        }

        return implictSchema;
    }

    private String implictDatabaseName;
    private String implictSchemaName;

    public void setImplictDatabaseName(String implictDatabaseName) {
        this.isImplicitDatabase = true;
        this.implictDatabaseName = implictDatabaseName;
    }

    public void setImplictSchemaName(String implictSchemaName) {
        this.isImplicitSchema = true;
        this.implictSchemaName = implictSchemaName;
    }

    public String getImplictDatabaseString() {
        String implictDatabase = null;
        if (implictDatabaseName != null) return implictDatabaseName;

        if (getDatabaseString().length() > 0) return  getDatabaseString();

        if (sqlEnv == null) return null;
        TSQLSchema s = searchImplicitSchema();
        if (s != null){
            TSQLCatalog c = s.getCatalog();
            if (c != null){
                implictDatabase = c.getName();
            }
        }

        return implictDatabase;
    }

    protected TSQLSchema searchImplicitSchema(){
        TSQLSchema s = null;
        if (sqlEnv == null) return null;
        switch (dbObjectType){
            case table:
            case view:
                TSQLTable t = sqlEnv.searchTable(".."+this.getObjectString());
                if (t != null){
                    s = t.getSchema();
                }

                break;
            case function:
            case procedure:
                TSQLFunction f = sqlEnv.searchFunction(".."+this.getObjectString());
                if (f != null){
                    s = f.getSchema();
                }
                break;
            default:
                break;
        }

        return s;
    }

    /**
     * The table name of this objectName, it's the same value as {@link #getObjectToken} if {@link #getDbObjectType}
     * is {@link gudusoft.gsqlparser.EDbObjectType#table}
     *
     * @return table name
     */
    public  TSourceToken getTableToken(){
        if (objectToken == null) return  null;
        else return objectToken;
    }

    /**
     * String text of the table name
     *
     * @return string of the table name, return null if empty.
     */
    public String getTableString(){
        if (objectToken == null) return  "";
//        else if (!((dbObjectType == EDbObjectType.table)||(dbObjectType == EDbObjectType.view))){
//            return "";
//        }
        else return objectToken.toString();
    }

    /**
     * String text of the object name
     *
     * @return string of the object name, return null if empty.
     */
    public String getObjectString() {
        if (objectToken != null)
            return objectToken.astext;
        else
            return "" ;
    }

    /**
     * String text of the part name
     *
     * @return string of the part name, return null if empty.
     */
    public String getPartString() {
        if (partToken != null)
            return partToken.astext;
        else
            return "" ;
    }


    public void setExclamationmark(TSourceToken exclamationmark) {
        this.exclamationmark = exclamationmark;
    }

    private TSourceToken exclamationmark; // objectToken@!, ! is dblink

    private Boolean isParsed = false;

    private void parseObjectName(){
        parseTablename();
    }

   private void parseTablename(){
       if ((this.dbObjectType == EDbObjectType.variable) ||(this.dbObjectType == EDbObjectType.stage))return;

       switch (this.dbvendor){
           case dbvteradata:
           case dbvhive:
               if (objectToken != null){
                   databaseToken = objectToken;
                   //databaseToken.setDbObjType(TObjectName.ttobjDatabaseName);
                   databaseToken.setDbObjectType(EDbObjectType.database);
               }
               objectToken = partToken;
               partToken = null;

               break;
           default:
               if (databaseToken != null){
                   serverToken = databaseToken;
                   //serverToken.setDbObjType(TObjectName.ttobjServerName);
                   serverToken.setDbObjectType(EDbObjectType.server);
               }

               if (schemaToken != null){
                   databaseToken = schemaToken;
                   //databaseToken.setDbObjType(TObjectName.ttobjDatabaseName);
                   databaseToken.setDbObjectType(EDbObjectType.database);
               }

               if (objectToken != null){
                   schemaToken = objectToken;
                   schemaToken.setDbObjType(TObjectName.ttobjSchemaName);
               }

               objectToken = partToken;
               partToken = null;
               break;
       }

       if (objectToken != null){
           objectToken.setDbObjectType(this.dbObjectType);
       }
    }

    private void parseVariableName(){
        if (databaseToken != null){
            serverToken = databaseToken;
            //serverToken.setDbObjType(TObjectName.ttobjServerName);
            serverToken.setDbObjectType(EDbObjectType.server);
        }

        if (schemaToken != null){
            databaseToken = schemaToken;
           // databaseToken.setDbObjType(TObjectName.ttobjDatabaseName);
            databaseToken.setDbObjectType(EDbObjectType.database);
        }

        if (objectToken != null){
            if (partToken != null){
                schemaToken = objectToken;
                schemaToken.setDbObjType(TObjectName.ttobjSchemaName);
                objectToken = partToken;
                partToken = null;
            }else{

            }
        }else{
            objectToken = partToken;
            partToken = null;
        }
    }

    private String ansiSchemaName;
    private String ansiCatalogName;


    /**
     *  In this SQL: select * from part1.part2,
     *  In Hive, MySQL and Teradata, part1 will be treated as a database name, returned in getDatabaseString(),
     *  while getSchemaString() return empty string.
     *
     *  However, TObjectName.getAnsiSchemaName() will return part1, which means it's a schema name.
     *
     *  If a table name is not qualified with a schema name, but GSP detect the schema for this table in the metadata
     *  then, this method will return this detected schema name.
     *
     * @return schema name
     */
    public String getAnsiSchemaName(){
        String ret = this.getSchemaString();
        if ((ret.length() == 0) && ((this.getImplictSchemaString() != null) && (!this.getImplictSchemaString().equalsIgnoreCase("default")))){
            ret = this.getImplictSchemaString();
        }

        switch (dbvendor){
            case dbvmysql:
            case dbvhive:
            case dbvteradata:
                ret = this.getDatabaseString();
                break;
        }
        return ret;
    }

    /**
     *   If a table name is not qualified with a database name, but GSP detect the database  for this table in the metadata
     *   then, this method will return this detected database name.
     *
     * @return
     */
    public String getAnsiCatalogName(){
        String ret = this.getDatabaseString();
        if (( ret.length() == 0) && (this.getImplictDatabaseString() != null) && (!this.getImplictDatabaseString().equalsIgnoreCase("default"))){
            ret = this.getImplictDatabaseString();
        }

        switch (dbvendor){
            case dbvmysql:
            case dbvhive:
            case dbvteradata:
                ret = "";
                break;
        }

        return  ret;
    }

    private void parseFunctionName(){
        this.parseTablename();
     }

    private void parseColumnMethodName(){
       // objectType = ttobjColumnMethod;

        methodToken = objectToken;
        partToken = schemaToken;

        objectToken = null;//;
        schemaToken = null;
     }

    private void parseColumnName(){
        assert(partToken != null);
     }

    public TObjectName(){
    }

    /**
     *  List the number of parts made up this objectName
     *
     * @return the number of parts that made up this objectName
     */
    public int getNumberOfPart() {
        return numberOfPart;
    }

    private int numberOfPart = 1;

    public static TObjectName createObjectName(EDbVendor dbVendor, EDbObjectType dbObjectType){
        return new TObjectName(dbVendor,dbObjectType);
    }


    public static TObjectName createObjectName(EDbVendor dbVendor, EDbObjectType dbObjectType,TSourceToken token1){
        return new TObjectName(dbVendor,dbObjectType,token1);
    }

    public static TObjectName createObjectName(EDbVendor dbVendor, EDbObjectType dbObjectType, String str) {
        String[] parts = str.split("\\.");
        if (parts.length == 1) {
            return new TObjectName(dbVendor, dbObjectType, new TSourceToken(parts[0]));
        } else if (parts.length == 2) {
            return new TObjectName(dbVendor, dbObjectType, new TSourceToken(parts[0]), new TSourceToken(parts[1]));
        } else if (parts.length == 3) {
            return new TObjectName(dbVendor, dbObjectType, new TSourceToken(parts[0]), new TSourceToken(parts[1]), new TSourceToken(parts[2]));
        } else if (parts.length == 4) {
            return new TObjectName(dbVendor, dbObjectType, new TSourceToken(parts[0]), new TSourceToken(parts[1]), new TSourceToken(parts[2]), new TSourceToken(parts[3]));
        }
        return new TObjectName(dbVendor, dbObjectType, new TSourceToken(str));
    }


    public static TObjectName createObjectName(EDbVendor dbVendor, EDbObjectType dbObjectType,TSourceToken token1,TSourceToken token2){
        return new TObjectName(dbVendor,dbObjectType,token1,token2);
    }

    public static TObjectName createObjectName(EDbVendor dbVendor, EDbObjectType dbObjectType,TSourceToken token1,TSourceToken token2,TSourceToken token3){
        return new TObjectName(dbVendor,dbObjectType,token1,token2,token3);
    }

    public static TObjectName createObjectName(EDbVendor dbVendor, EDbObjectType dbObjectType,TSourceToken token1,TSourceToken token2,TSourceToken token3,TSourceToken token4){
        return new TObjectName(dbVendor,dbObjectType,token1,token2,token3,token4);
    }

    /**
     * @deprecated As of v2.0.7.1, please use {@link #TObjectName(EDbObjectType, TSourceToken)} instead.
     *
     * Class constructor specifying object name and object type.
     * <p>
     * Use {@link gudusoft.gsqlparser.TGSqlParser#parseObjectName} to create an objectName more than 2 parts.
     *
     * @param token           name of this object
     * @param dbObjectType   type of this object
     */
    private TObjectName(TSourceToken token,EDbObjectType dbObjectType){
        this(dbObjectType,token);
    }

    public void splitNameInQuotedIdentifier(){
        if (this.dbvendor != EDbVendor.dbvbigquery) return;
        if (getQuoteType() == EQuoteType.notQuoted) return;
//        if ((this.dbvendor != EDbVendor.dbvbigquery)
//                &&(getQuoteType() == EQuoteType.doubleQuote)) return;
        if (this.objectToken == null) return;
        TSourceToken token = this.objectToken;

        String s = TBaseType.getTextWithoutQuoted(token.toString());
        String[] a = s.split("[.]");
        if (a.length == 1){
            // this.objectToken = token;
        }else if (a.length == 2){
            this.objectToken = new TSourceToken(token.toString().charAt(0)+a[1]+token.toString().charAt(0));
            this.schemaToken = new TSourceToken(token.toString().charAt(0)+a[0]+token.toString().charAt(0));
        }else if (a.length == 3){
            this.objectToken = new TSourceToken(token.toString().charAt(0)+a[2]+token.toString().charAt(0));
            this.schemaToken = new TSourceToken(token.toString().charAt(0)+a[1]+token.toString().charAt(0));
            this.databaseToken = new TSourceToken(token.toString().charAt(0)+a[0]+token.toString().charAt(0));
        }

    }

    private TObjectName(EDbVendor dbVendor){
        this.dbvendor = dbVendor;
    }

    private TObjectName(EDbVendor dbVendor,EDbObjectType dbObjectType){
        this.dbvendor = dbVendor;
        this.dbObjectType = dbObjectType;
    }

    private TObjectName(EDbVendor dbVendor, EDbObjectType dbObjectType,TSourceToken token){
        this.dbvendor = dbVendor;
        numberOfPart = 1;
        this.setStartToken(token);
        this.setEndToken(token);

        this.dbObjectType = dbObjectType;
        switch (dbObjectType){
            case column:
                this.partToken = token;
                break;
            case method:
                this.methodToken = token;
                break;
            case table:
            case function:
            case procedure:
            case materializedView:
            case alias:
            case module:
            case sequence:
            case collation:
                this.objectToken = token;
                splitNameInQuotedIdentifier();
                break;
            default:
                this.objectToken = token;
                break;
        }
    }

    private void initWithOneToken(EDbObjectType dbObjectType,TSourceToken token){
        numberOfPart = 1;
        this.setStartToken(token);
        this.setEndToken(token);

        this.dbObjectType = dbObjectType;
        switch (dbObjectType){
            case column:
                this.partToken = token;
                break;
            case method:
                this.methodToken = token;
                break;
            case table:
            case function:
            case procedure:
            case materializedView:
            case alias:
            case module:
            case sequence:
            case collation:
            case stage:
                this.objectToken = token;
                splitNameInQuotedIdentifier();
                break;
            case namespace:
                this.schemaToken = token;
                break;
            default:
                this.objectToken = token;
                break;
        }
    }

    private void initWithTwoTokens(EDbObjectType dbObjectType,TSourceToken token2,TSourceToken token1){
        initWithOneToken(dbObjectType,token1);
        numberOfPart = 2;
        this.setStartToken(token2);
        this.setEndToken(token1);

        switch (dbObjectType){
            case column:
                this.objectToken = token2;
                break;
            case method:
                this.partToken = token2;
                break;
            case table:
            case function:
            case procedure:
            case materializedView:
            case alias:
            case module:
            case sequence:
            case collation:
            case stage:
                this.schemaToken = token2;
                break;
            case namespace:
                this.databaseToken = token2;
                break;
            default:
                this.schemaToken = token2;
                break;
        }

    }

    private void initWithThreeTokens(EDbObjectType dbObjectType,TSourceToken token3,TSourceToken token2,TSourceToken token1){
        initWithTwoTokens(dbObjectType,token2,token1);
        numberOfPart = 3;
        this.setStartToken(token3);
        this.setEndToken(token1);

        switch (dbObjectType){
            case column:
                this.schemaToken = token3;
                break;
            case method:
                this.objectToken = token3;
                break;
            case table:
            case function:
            case procedure:
            case materializedView:
            case alias:
            case module:
            case sequence:
            case collation:
            case stage:
                this.databaseToken = token3;
                break;
            default:
                this.databaseToken = token3;
                break;
        }

    }

    private void initWithFourTokens(EDbObjectType dbObjectType,TSourceToken token4,TSourceToken token3,TSourceToken token2,TSourceToken token1){
        initWithThreeTokens(dbObjectType,token3,token2,token1);
        numberOfPart = 4;
        this.setStartToken(token4);
        this.setEndToken(token1);

        switch (dbObjectType){
            case column:
                this.databaseToken = token4;
                break;
            case method:
                this.schemaToken = token4;
                break;
            case table:
            case function:
            case procedure:
            case materializedView:
            case alias:
            case module:
            case sequence:
            case collation:
                this.serverToken = token4;
                break;
            default:
                this.serverToken = token4;
                break;
        }

    }

    /**
     * @deprecated As of v2.0.7.1, please use {@link TObjectName#createObjectName(EDbVendor, EDbObjectType, TSourceToken)} instead.
     * 
     * @param dbObjectType
     * @param token
     */
    private TObjectName(EDbObjectType dbObjectType,TSourceToken token){
        initWithOneToken(dbObjectType,token);
    }

    private TObjectName(EDbVendor dbVendor, EDbObjectType dbObjectType,TSourceToken token2,TSourceToken token1){
        this(dbVendor,dbObjectType,token1);
        numberOfPart = 2;
        this.setStartToken(token2);
        this.setEndToken(token1);

        switch (dbObjectType){
            case column:
                this.objectToken = token2;
                break;
            case method:
                this.partToken = token2;
                break;
            case table:
            case function:
            case procedure:
            case materializedView:
            case alias:
            case module:
            case sequence:
            case collation:
                if (dbVendor == EDbVendor.dbvteradata){
                    this.databaseToken = token2;
                }else{
                    this.schemaToken = token2;
                }

                break;
            default:
                this.schemaToken = token2;
                break;
        }

    }


    /**
     * @deprecated since ver 2.5.9.8
     *
     * @param dbObjectType
     * @param token2
     * @param token1
     */
    private TObjectName(EDbObjectType dbObjectType,TSourceToken token2,TSourceToken token1){
        this(dbObjectType,token1);
        numberOfPart = 2;
        this.setStartToken(token2);
        this.setEndToken(token1);

        switch (dbObjectType){
            case column:
                this.objectToken = token2;
                break;
            case method:
                this.partToken = token2;
                break;
            case table:
            case function:
            case procedure:
            case materializedView:
            case alias:
            case module:
            case sequence:
            case collation:
                this.schemaToken = token2;
                break;
            default:
                this.schemaToken = token2;
                break;
        }
    }
    private TObjectName(EDbVendor dbVendor, EDbObjectType dbObjectType,TSourceToken token3,TSourceToken token2,TSourceToken token1){
        this(dbVendor,dbObjectType,token2,token1);
        numberOfPart = 3;
        this.setStartToken(token3);
        this.setEndToken(token1);

        switch (dbObjectType){
            case column:
                this.schemaToken = token3;
                break;
            case method:
                this.objectToken = token3;
                break;
            case table:
            case function:
            case procedure:
            case materializedView:
            case alias:
            case module:
            case sequence:
            case collation:
                this.databaseToken = token3;
                break;
            default:
                this.databaseToken = token3;
                break;
        }

    }


    /**
     * @deprecated since ver 2.5.9.8
     *
     * @param dbObjectType
     * @param token3
     * @param token2
     * @param token1
     */
    private TObjectName(EDbObjectType dbObjectType,TSourceToken token3,TSourceToken token2,TSourceToken token1){
        this(dbObjectType,token2,token1);
        numberOfPart = 3;
        this.setStartToken(token3);
        this.setEndToken(token1);

        switch (dbObjectType){
            case column:
                this.schemaToken = token3;
                break;
            case method:
                this.objectToken = token3;
                break;
            case table:
            case function:
            case procedure:
            case materializedView:
            case alias:
            case module:
            case sequence:
            case collation:
                this.databaseToken = token3;
                break;
            default:
                this.databaseToken = token3;
                break;
        }
    }

    private TObjectName(EDbVendor dbVendor, EDbObjectType dbObjectType,TSourceToken token4,TSourceToken token3,TSourceToken token2,TSourceToken token1){
        this(dbVendor,dbObjectType,token3,token2,token1);
        numberOfPart = 4;
        this.setStartToken(token4);
        this.setEndToken(token1);

        switch (dbObjectType){
            case column:
                this.databaseToken = token4;
                break;
            case method:
                this.schemaToken = token4;
                break;
            case table:
            case function:
            case procedure:
            case materializedView:
            case alias:
            case module:
            case sequence:
            case collation:
                this.serverToken = token4;
                break;
            default:
                this.serverToken = token4;
                break;
        }

    }

    /**
     * @deprecated since ver 2.5.9.8
     *
     * @param dbObjectType
     * @param token4
     * @param token3
     * @param token2
     * @param token1
     */
    private TObjectName(EDbObjectType dbObjectType,TSourceToken token4,TSourceToken token3,TSourceToken token2,TSourceToken token1){
        this(dbObjectType,token3,token2,token1);
        numberOfPart = 4;
        this.setStartToken(token4);
        this.setEndToken(token1);

        switch (dbObjectType){
            case column:
                this.databaseToken = token4;
                break;
            case method:
                this.schemaToken = token4;
                break;
            case table:
            case function:
            case procedure:
            case materializedView:
            case alias:
            case module:
            case sequence:
            case collation:
                this.serverToken = token4;
                break;
            default:
                this.serverToken = token4;
                break;
        }
    }

    /**
     * @deprecated As of v2.0.7.1, please use {@link #TObjectName(EDbObjectType, TSourceToken, TSourceToken)} instead.
     *
     * Class constructor specifying object, part name and object type.
     * Use this constructor to create a <code>table.column</code> objectName.
     * Use {@link gudusoft.gsqlparser.TGSqlParser#parseObjectName} to create an objectName more than 2 parts.
     *
     * @param pObjectToken    name of this object, usually it's the table name
     * @param pPartToken      name of the column
     * @param dbObjectType    type of this object, usually it's {@link gudusoft.gsqlparser.EDbObjectType#column}
     */
    private TObjectName(TSourceToken pObjectToken,TSourceToken pPartToken,EDbObjectType dbObjectType){
        this(dbObjectType,pObjectToken,pPartToken);
    }

    public void init(Object arg1)
    {
        partToken = (TSourceToken)arg1;
        numberOfPart = 1;
        this.setStartToken(partToken);
        this.setEndToken(partToken);
    }

    public void init(Object arg1, Object arg2)
    {
        if (arg1 instanceof EDbObjectType){
            initWithOneToken((EDbObjectType)arg1,(TSourceToken) arg2);

        }else{
            numberOfPart = 0;
            objectToken = (TSourceToken)arg1;
            partToken = (TSourceToken)arg2;
            if (partToken != null) numberOfPart++;
            if (objectToken != null) numberOfPart++;


            if(objectToken != null){
                this.setStartToken(objectToken);
            }else{
                this.setStartToken(partToken);
            }

            if (partToken != null){
                this.setEndToken(partToken);
            }else{
                this.setEndToken(objectToken);
            }
        }
    }

    public void init(EDbObjectType dbObjectType, Object arg1, Object arg2, Object arg3){
        numberOfPart = 0;
        if (arg1 != null) numberOfPart++;
        if (arg2 != null) numberOfPart++;
        if (arg3 != null) numberOfPart++;

        this.dbObjectType = dbObjectType;
        this.setStartToken((TSourceToken)arg1);
        this.setEndToken((TSourceToken)arg3);
        switch (this.dbObjectType){
            case column:
                schemaToken = (TSourceToken)arg1;
                objectToken = (TSourceToken)arg2;
                partToken = (TSourceToken)arg3;
                break;
            case table:
            case function:
            case procedure:
            case materializedView:
            case module:
            case sequence:
                databaseToken = (TSourceToken) arg1;
                schemaToken = (TSourceToken)arg2;
                objectToken = (TSourceToken)arg3;
                break;
            case alias:
                break;
            default:
                break;
        }

    }

    public void init(Object arg1, Object arg2, Object arg3)
    {
        if (arg1 instanceof EDbObjectType){
            initWithTwoTokens((EDbObjectType)arg1,(TSourceToken) arg2,(TSourceToken) arg3);
        }else{
            numberOfPart = 0;
            if (arg1 != null) numberOfPart++;
            if (arg2 != null) numberOfPart++;
            if (arg3 != null) numberOfPart++;

            if (dbvendor == EDbVendor.dbvteradata){
                databaseToken = (TSourceToken) arg1;
                this.setStartToken(databaseToken);
            }else{
                schemaToken = (TSourceToken)arg1;
                this.setStartToken(schemaToken);
                if (schemaToken != null)
                   {schemaToken.setDbObjType(TObjectName.ttobjSchemaName);}
            }

            objectToken = (TSourceToken)arg2;
            partToken = (TSourceToken)arg3;
            this.setEndToken(partToken);
        }
    }

    public void init(Object arg1, Object arg2, Object arg3, Object arg4)
    {
        if (arg1 instanceof EDbObjectType){
            //this.dbObjectType = (EDbObjectType)arg1;
            //init(arg2,arg3,arg4);
            initWithThreeTokens((EDbObjectType)arg1,(TSourceToken)arg2,(TSourceToken)arg3,(TSourceToken)arg4);
        }else{
            numberOfPart = 0;
            if (arg1 != null) numberOfPart++;
            if (arg2 != null) numberOfPart++;
            if (arg3 != null) numberOfPart++;
            if (arg4 != null) numberOfPart++;

            //serverToken = (TSourceToken)arg1;
            databaseToken = (TSourceToken)arg1;
            schemaToken = (TSourceToken)arg2;
            objectToken = (TSourceToken)arg3;
            partToken = (TSourceToken)arg4;
            this.setStartToken(databaseToken);
            this.setEndToken(partToken);
            if (databaseToken != null){
                //databaseToken.setDbObjType(TObjectName.ttobjDatabaseName);
                databaseToken.setDbObjectType(EDbObjectType.database);
            }else {
            }
            if (schemaToken != null){
                schemaToken.setDbObjType(TObjectName.ttobjSchemaName);
            }else {
            }
        }
    }

    public void init(Object arg1, Object arg2, Object arg3, Object arg4, Object arg5)
    {
        numberOfPart = 0;
        if (arg1 != null) numberOfPart++;
        if (arg2 != null) numberOfPart++;
        if (arg3 != null) numberOfPart++;
        if (arg4 != null) numberOfPart++;
        if (arg5 != null) numberOfPart++;

        serverToken = (TSourceToken)arg1;
        databaseToken = (TSourceToken)arg2;
        schemaToken = (TSourceToken)arg3;
        objectToken = (TSourceToken)arg4;
        partToken = (TSourceToken)arg5;

        this.setStartToken(serverToken);
        this.setEndToken(partToken);

        if (serverToken != null){
            //serverToken.setDbObjType(TObjectName.ttobjServerName);
            serverToken.setDbObjectType(EDbObjectType.server);
        }else{
        }
        if (databaseToken != null){
            //databaseToken.setDbObjType(TObjectName.ttobjDatabaseName);
            databaseToken.setDbObjectType(EDbObjectType.database);
        }else{
        }
        if (schemaToken != null){
            schemaToken.setDbObjType(TObjectName.ttobjSchemaName);
        }else{
        }
    }

    public void init(Object arg1, Object arg2, Object arg3, Object arg4, Object arg5, Object arg6)
    {
        numberOfPart = 0;
        if (arg1 != null) numberOfPart++;
        if (arg2 != null) numberOfPart++;
        if (arg3 != null) numberOfPart++;
        if (arg4 != null) numberOfPart++;
        if (arg5 != null) numberOfPart++;
        if (arg6 != null) numberOfPart++;

        serverToken = (TSourceToken)arg1;
        databaseToken = (TSourceToken)arg2;
        schemaToken = (TSourceToken)arg3;
        objectToken = (TSourceToken)arg4;
        partToken = (TSourceToken)arg5;
        propertyToken = (TSourceToken)arg6;

        this.setStartToken(serverToken);
        this.setEndToken(propertyToken);

        if (serverToken != null){
            //serverToken.setDbObjType(TObjectName.ttobjServerName);
            serverToken.setDbObjectType(EDbObjectType.server);
        }else{
        }
        if (databaseToken != null){
           // databaseToken.setDbObjType(TObjectName.ttobjDatabaseName);
            databaseToken.setDbObjectType(EDbObjectType.database);
        }else{
        }
        if (schemaToken != null){
            schemaToken.setDbObjType(TObjectName.ttobjSchemaName);
        }else{
        }
    }

    /**
     * The column position of this objectName in the SQL
     *
     * @return column position
     */
    @Override
    public long getColumnNo() {
        long retval = -1;
        if (partToken != null) { retval = partToken.columnNo;}
        if (objectToken != null) {
              retval = objectToken.columnNo;
        }
        if (schemaToken != null) {
              retval = schemaToken.columnNo;
        }
        if (databaseToken != null) {
              retval = databaseToken.columnNo;
        }
        if (serverToken != null) {
              retval = serverToken.columnNo;
        }
        return retval;
    }

    /**
     * The line number of this objectName in SQL
     *
     * @return the line number
     */
    @Override
    public long getLineNo() {
        long retval = -1;
        if (partToken != null) { retval = partToken.lineNo;}
        if (objectToken != null) {
              retval = objectToken.lineNo;
        }
        if (schemaToken != null) {
              retval = schemaToken.lineNo;
        }
        if (databaseToken != null) {
              retval = databaseToken.lineNo;
        }
        if (serverToken != null) {
              retval = serverToken.lineNo;
        }
        return retval;
    }

   private TObjectNameList referencedObjects = null;

    public TObjectNameList getReferencedObjects() {
        if (referencedObjects == null){
            referencedObjects = new TObjectNameList();
        }
        return referencedObjects;
    }

    /**
     * Returns only the column name if it's prefixed with a table name
     *
     * @return only the column name if it's prefixed with a table name
     */
    public String getColumnNameOnly(){

        if (getPartToken() == null) return "";
        else  return getPartToken().toString();
    }

    public void accept(TParseTreeVisitor v){
        v.preVisit(this);
        v.postVisit(this);
    }

    public void acceptChildren(TParseTreeVisitor v){
        v.preVisit(this);
        v.postVisit(this);
    }

//    private TSourceToken sortType = null;
//
//    public void setSortType(TSourceToken sortType) {
//        this.sortType = sortType;
//    }
//
//    /**
//     * When this object is column in primary key(column,...), unique key(column,...) in sql server
//     * there maybe sort information like column asc, column desc
//     * this token represents for ASC, DESC if specified.
//     *
//     * @return ASC, DESC or null
//     */
//
//    public TSourceToken getSortType() {
//        return sortType;
//    }

    /**
     * It's the same as {@link #getPartToken} if {@link #getDbObjectType} is {@link gudusoft.gsqlparser.EDbObjectType#column}
     *
     * @return source token that represents column, return null if this objectName is not type of column
     *
     */
    public TSourceToken getColumnToken(){
        TSourceToken ret = null;
        if (this.getObjectType() == ttobjColumn){
            ret = this.getPartToken();
        }
        return ret;
    }

    /*
     *  re-arranage objectname to make it a valid name includes attribute name
      * used by teradata yacc file only.
      * valid syntax:
       * column.attr1().attr2().
       * column.attr1().attr2().attr3()
       * table.column.attr1().attr2().
       * table.column.attr1().attr2().attr3()
       *
     *   @return
     */
   public boolean isAttributeNameInObjectName(TSourceToken leftparen,TSourceToken rightparen){
        boolean ret = false;
        if ((this.partToken == null) || (this.objectToken == null)){
            return ret;
        }
        this.objectType = TObjectName.ttobjColumn;
        this.columnAttributes = new TObjectNameList();
        TObjectName attr1 = new TObjectName();
        attr1.objectType = TObjectName.ttobjAttribute;
        attr1.init(this.partToken);
        attr1.setEndToken(rightparen);
        this.columnAttributes.addObjectName(attr1);

        this.partToken = this.objectToken;

        if (this.schemaToken != null){
            this.objectToken = this.schemaToken;
        }

        return true;
   }

    /**
     * Used internally in hive .y file to merge two objectNames
     */
    public void mergeObjectName(TObjectName objectName){
        this.objectToken = this.partToken;
        this.partToken = objectName.getPartToken();
        this.setStartToken(objectToken);
        this.setEndToken(partToken);
    }

    public void mergeObjectName(TObjectName objectName,TObjectName objectName2){
        this.schemaToken = this.partToken;
        this.objectToken = objectName.getPartToken();
        this.partToken = objectName2.getPartToken();
        this.setStartToken(schemaToken);
        this.setEndToken(partToken);
    }


    public void columnToProperty(){
        // if (numberOfPart == 1) return;
        if (this.propertyToken != null) return; // columnToProperty() already called
        if (! ((this.partToken != null) && (this.objectToken != null))) return; // 既然是 column.property ， 那么 partToken and objectToken 不能为空

        this.propertyToken = this.partToken;
        this.partToken = this.objectToken;
        this.objectToken = this.schemaToken;

        this.setDbObjectTypeDirectly(EDbObjectType.column);
    }

    public void appendObjectName(TObjectName objectName){
        if (this.databaseToken != null){
            this.serverToken = this.databaseToken;
        }
        if (this.schemaToken != null){
            this.databaseToken = this.schemaToken;
        }
        if (this.objectToken != null){
            this.schemaToken = this.objectToken;
        }
        this.objectToken = this.partToken;
        this.partToken = objectName.getPartToken();
        this.setEndTokenDirectly(this.partToken);
    }

    private TSourceToken commentString;

    public void setCommentString(TSourceToken commentString) {
        this.commentString = commentString;
    }

    public TSourceToken getCommentString() {

        return commentString;
    }


    /**
     * The X and Y position of this objectName in the SQL
     *
     * @return coordinate in string text
     */
    public String coordinate(){
        return this.getStartToken().lineNo+","+this.getEndToken().columnNo;
    }


    /**
     * @deprecated replaced by {@link EDbObjectType}.
     *
     * this is not an object, like sysdate function in oracle database
     */
    public final static int ttobjNotAObject = -1;

    /**
     * @deprecated replaced by {@link EDbObjectType}.
     * object type can't be determined.
     */
    public final static int ttobjUnknown = 0;

    /**
     * @deprecated replaced by {@link EDbObjectType}.
     * column in table, objectToken is table if specified, and partToken is column name.
     */
    public final static int ttobjColumn = 1;

    /**
     * @deprecated replaced by {@link EDbObjectType}.
     * column alias in objectToken.
     */
    public final static int ttobjColumnAlias = 2;

    /**
     * @deprecated replaced by {@link EDbObjectType}.
     * table name in objectToken.
     */
    public final static int ttobjTable = 3;


    /**
     * @deprecated replaced by {@link EDbObjectType}.
     * parameter name in objectToken.
     */
    public final static int ttobjParameter = 9;

    /**
     * @deprecated replaced by {@link EDbObjectType}.
     * variable name in objectToken.
     */
    public final static int ttobjVariable = 10;


    /**
     * @deprecated replaced by {@link EDbObjectType#method}.
     *  column method like SetXY below, column method in {@link #methodToken}, and colomn name in {@link #partToken}.
     *<p>   UPDATE Cities
     *<p>   SET Location.SetXY(23.5, 23.5)
     *
     *
     */
    public final static int ttobjColumnMethod = 11;



    /**
     * @deprecated replaced by {@link EDbObjectType}.
     * function name in {@link #objectToken}
     */
    public final static int ttobjFunctionName = 13;


    /**
     * @deprecated replaced by {@link EDbObjectType#constraint}.
     * constraint name in {@link #objectToken}
     */
    public final static int ttobjConstraintName = 19;

    /**
     * @deprecated replaced by {@link EDbObjectType}.
     * string constant in {@link #objectToken}
     */
    public final static int ttobjStringConstant = 23;


    /**
     * @deprecated replaced by {@link EDbObjectType}.
     * attribute name is in {@link #partToken}
     */
    public final static int ttobjAttribute = 26;


    /**
     * @deprecated replaced by {@link EDbObjectType}.
     * datatype was not represented by a TObjectName object, this constant was used in source tokens that consist of  TTypeName.
     */
    public final static int ttobjDatatype = 30;

    /**
     * @deprecated replaced by {@link EDbObjectType}.
     *  schema name in {@link #schemaToken}
     */
    public final static int ttobjSchemaName = 31;


    /**
     * @deprecated replaced by {@link EDbObjectType}.
     * postgresql
     * Positional Parameters, $1, $1[1], $1[1,10]
     * parameter name is in {@link #partToken} of $1,
     * and parameter name is in {@link #objectToken} of $1.columnName,
     * and column name is in {@link #partToken}
     */

    public final static int ttobjPositionalParameters = 61;



    private void setColumnTokenOfPositionalParameters(TSourceToken column){
        this.objectToken = this.partToken;
        this.partToken = column;
    }

    private int objectType = ttobjUnknown;


    /**
     * @deprecated replaced by {@link EDbObjectType}.
     * this type is used in TObjectNameList, when objects in TObjectNameList includes more than
     * one type, objtype of that TObjectNameList was set to ttobjMixed.
     *
     * removed since v2.9.2.5
     */
   // public final static int ttobjMixed = 100;

    /**
     * @deprecated replaced by {@link EDbObjectType#library}.
     * removed since v2.9.2.5
     */
   // public final static  int ttObjLibrary = 72;

    /**
     * @deprecated replaced by {@link EDbObjectType#oracleHint}.
     * removed since v2.9.2.5
     */
   // public final static  int ttObjOracleHint = 70;

    /**
     * @deprecated replaced by {@link EDbObjectType#fieldName}.
     * check {@link gudusoft.gsqlparser.nodes.TExpression#getFieldName()} for more
     * removed since v2.9.2.5
     */
   // public final static int ttobjFieldName = 51;

    /**
     * @deprecated replaced by {@link EDbObjectType#miningModel}.
     * removed since v2.9.2.5
     */
    // public final static int ttobjMiningModel = 46;

    /**
     * @deprecated replaced by {@link EDbObjectType#materializedView}.
     * removed since v2.9.2.5
     */
    // public final static int ttobjMaterializedView = 44;

    /**
     * @deprecated replaced by {@link EDbObjectType#indextype}.
     * removed since v2.9.2.5
     */
   // public final static int ttobjIndexType = 42;

    /**
     * @deprecated replaced by {@link EDbObjectType#operator}.
     * removed since v2.9.2.5
     */
    // public final static int ttobjOperator = 40;

    /**
     * @deprecated replaced by {@link EDbObjectType#server}.
     * server name in {@link #serverToken}
     *
     * removed since v2.9.2.5
     */
  //  public final static int ttobjServerName = 32;

    /**
     * @deprecated replaced by {@link EDbObjectType#sequence}.
     * Sequence name in {@link #objectToken}
     *
     * removed since v2.9.2.5
     */
   // public final static int ttobjSequence = 29;

    /**
     * @deprecated replaced by {@link EDbObjectType#plsql_package}.
     * package name in {@link #objectToken}
     *
     * removed since v2.9.2.5
     */
   // public final static int ttobjPackage = 28;

    /**
     * @deprecated replaced by {@link EDbObjectType#alias}.
     * alias name in {@link #objectToken}
     *
     * removed since v2.9.2.5
     */
   // public final static int ttobjAliasName = 25;


    /**
     * @deprecated replaced by {@link EDbObjectType#trigger}.
     * Trigger name in {@link #objectToken}
     *
     * removed since v2.9.2.5
     */
   // public final static int ttobjTrigger = 24;

    /**
     * @deprecated replaced by {@link EDbObjectType#database}.
     * Database name in {@link #objectToken}
     *
     * removed since v2.9.2.5
     */
   // public final static int ttobjDatabaseName = 22;

    /**
     * @deprecated replaced by {@link EDbObjectType#transaction}.
     * Transaction name in {@link #objectToken}
     *
     * removed since v2.9.2.5
     */
    // public final static int ttobjTransactionName = 21;


    /**
     * @deprecated replaced by {@link EDbObjectType#user_defined_type}.
     * type name in {@link #objectToken}
     *
     * removed since v2.9.2.5
     */
   // public final static int ttobjTypeName = 27;

    /**
     * @deprecated replaced by {@link EDbObjectType#property}.
     * property name in {@link #propertyToken}
     *
     * removed since v2.9.2.5
     */
   // public final static int ttobjPropertyName = 20;

    /**
     * @deprecated replaced by {@link EDbObjectType#view}.
     * view name in {@link #objectToken}
     *
     * removed since v2.9.2.5
     */
   // public final static int ttobjViewName = 18;

    /**
     * @deprecated replaced by {@link EDbObjectType#cursor}.
     * cursor name in {@link #objectToken}
     *
     * removed since v2.9.2.5
     */
  //  public final static int ttobjCursorName = 17;

    /**
     * @deprecated replaced by {@link EDbObjectType#materializedView}.
     * materialized view name in {@link #objectToken}
     *
     * removed since v2.9.2.5
     */
   // public final static int ttobjMaterializedViewName = 16;

    /**
     * @deprecated replaced by {@link EDbObjectType#index}.
     * index name in {@link #objectToken}
     *
     * removed since v2.9.2.5
     */
   // public final static int ttobjIndexName = 15;

    /**
     * @deprecated replaced by {@link EDbObjectType#label}.
     * label name in {@link #objectToken}
     *
     * removed since v2.9.2.5
     */
   // public final static int ttobjLabelName = 14;

    /**
     * @deprecated replaced by {@link EDbObjectType#procedure}.
     * procedure name in {@link #objectToken}
     *
     * removed since v2.9.2.5
     */
   // public final static int ttobjProcedureName = 12;

    /**
     * @deprecated replaced by {@link EDbObjectType#variable}.
     * table variable in objectToken.
     *
     * removed since v2.9.2.5
     */
   // public final static int ttobjTableVar = 8;

    /**
     * @deprecated replaced by {@link EDbObjectType#cte}.
     * table name in objectToken.
     *
     * removed since v2.9.2.5
     */
    // public final static int ttobjTableCTE = 5;

    /**
     * @deprecated replaced by {@link EDbObjectType}.
     * table name in objectToken.
     */
    // public final static int ttobjTableTemp = 6;

    /**
     * @deprecated replaced by {@link EDbObjectType}.
     */
    //  public final static int ttobjTablePivot = 7;

    /**
     * @deprecated replaced by {@link EDbObjectType#table_alias}.
     * table alias in objectToken
     *
     * removed since v2.9.2.5
     */
   // public final static int ttObjTableAlias = 4;
}