public class TTeradataMultiLoadImport extends TCustomSqlStatement
TCustomSqlStatement.SqlNormalizationProfiledummytag, fromClause, fromSourceJoin, fromSourceTable, isctequery, isparsed, joins, parser, plsqlparser, relationAttributes, rootNode, semicolonended, sourcetokenlist, sqlstatementtype, stmtScope, tablesdbvendor, doubleLinkedTokenListToString, nodeActionAppend, nodeActionInsert, nodeActionRemove, nodeActionUnknown, nodeActionUpdate, nodeActionUpdateText, nodeChangeEndToken, nodeChangeStartToken| Constructor and Description |
|---|
TTeradataMultiLoadImport(EDbVendor dbvendor) |
| Modifier and Type | Method and Description |
|---|---|
void |
accept(TParseTreeVisitor v)
Accept a visitor
|
void |
acceptChildren(TParseTreeVisitor v)
Accept a visitor to iterate this class and sub-nodes of this class
|
String |
getApply() |
Integer |
getCheckpoint() |
String |
getFormat() |
String |
getIndicators() |
String |
getInfile() |
String |
getLayout() |
Integer |
getSessions() |
Integer |
getSkip() |
void |
parseImportCommand() |
void |
setCommand(String command) |
String |
toString()
将一个语法树节点（
TParseTreeNode）转换回它对应的原始SQL字符串。
它通过遍历一个由 startToken（起始词法单元）和 endToken（结束词法单元）界定的双向链表来实现这一功能。 |
addToTables, addWhereClause, analyzeFromTable, analyzeFromTable, analyzeJoin, analyzeTablename, analyzeTableOrJoin, asCanonical, checkNonQualifiedColumnReferenceInSubQueryOfUplevelStmt, clearError, computeSqlHash, dochecksyntax, doParseStatement, findTable, fireOnMetaDatabaseTableColumn, getAncestorStmt, getAttributes, getColumnsInTable, getColumnsInTable, getCteIncludeThisStmt, getCteList, getDaxFunctionStack, getEndlabelName, getErrorCount, getErrormessage, getExpandedResultColumns, getFirstPhysicalTable, getFrameStack, getFromClause, getFromSourceJoin, getFromSourceTable, getGlobalScope, getIndexColumns, getJoins, getLabelName, getOrphanColumns, getOutputClause, getParentObjectName, getParentStmt, getQueryId, getRelationName, getRelations, getResultColumnList, getReturningClause, getSqlEnv, getSqlHash, getSqlHash, getStatements, getStmtScope, getSymbolTable, getSyntaxErrors, getSyntaxHints, getTables, getTargetTable, getTokenList, getTopClause, getTopStatement, getUsingVariableList, getVariableStack, getWhereClause, isathenaplsql, isBigQueryplsql, isdatabricksplsql, isGaussDBStoredProcedure, isgreeplumplsql, isnzplsql, isoracleplsql, ispgplsql, isprestoplsql, issnowflakeplsql, isTableACTE, isverticaplsql, linkColumnReferenceToTable, linkColumnToTable, linkToFirstTable, locateVariableOrParameter, locateVariableOrParameter, OracleStatementCanBeSeparatedByBeginEndPair, parseerrormessagehandle, parsestatement, parsestatement, searchCTEList, searchDaxVariableInStack, searchFunctionInSQLEnv, setAlreadyAddToParent, setCteIncludeThisStmt, setCteList, setEndlabelName, setFrameStack, setFromClause, setLabelName, setOutputClause, setParentStmt, setParentStmtToNull, setQueryId, setResultColumnList, setReturningClause, setSqlHash, setStmtScope, setTargetTable, setTopClause, setUsingVariableList, setVariableStack, setWhereClause, size, toNormalizedSql, toScript, VerticaStatementCanBeSeparatedByBeginEndPairaddAllMyTokensToTokenList, addToTokenChain, appendNewNode, calculateTokenCount, doAppendNewNode, doParse, fastSetString, getAnchorNode, getColumnNo, getCommentAfterNode, getCommentBeforeNode, getCompactString, getDummyTag, getEndToken, getEvaluateDatatype, getEvalValue, getGsqlparser, getLineNo, getLocation, getMd5, getNodeStatus, getNodeType, getPlainText, getStartToken, getTokenCount, hasNext, init, init, init, init, init, init, init, init, init, init, insertAfterAToken, insertNewNodeBeforeMe, isChanged, isTokensInChain, next, refreshAllNodesTokenCount, remove, removeAllMyTokensFromTokenList, removeTokens, removeTokensBetweenNodes, removeTokensBetweenToken, replaceWithNewNode, resetIterator, setAnchorNode, setChanged, setDummyTag, setEndToken, setEndToken, setEndToken, setEndToken, setEndToken, setEndTokenDirectly, setEvaluateDatatype, setEvalValue, setGsqlparser, setIncludingComment, setLocation, setNewSubNode, setNodeStatus, setNodeType, setParent, setPlainText, setStartToken, setStartToken, setStartToken, setStartToken, setStartTokenDirectly, setString, setString2, subNodeInNode, toString2clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, waitforEachRemainingpublic TTeradataMultiLoadImport(EDbVendor dbvendor)
public Integer getCheckpoint()
public Integer getSessions()
public String getIndicators()
public String toString()
TParseTreeNode
将一个语法树节点（TParseTreeNode）转换回它对应的原始SQL字符串。
它通过遍历一个由 startToken（起始词法单元）和 endToken（结束词法单元）界定的双向链表来实现这一功能。
这个方法的设计采用了“两遍扫描”（Two-Pass）的策略，也就是使用了两个 while 循环。
第一个循环是预处理阶段，用于清理格式；第二个循环则负责构建最终的字符串。
while 循环这个循环的主要目标是识别并“软删除”多余的换行符（newline tokens）。这种情况尤其在SQL被程序动态修改后容易出现。 这个循环本身不构建字符串，只负责分析和更新词法单元的状态。 其工作原理是：
startToken 开始，通过 getNextTokenInChain() 方法遍历到 endToken。posinlist（词法单元在原始完整列表中的位置索引）来判断链表是否“自然”。
如果不连续，意味着词法单元被插入或重排了，此时 isChainModified 标志位会被设为 true。while 循环这个循环负责从（经过第一步清理后的）词法单元流中实际地构建最终的输出字符串。 其工作原理是：
StringBuffer 之前，它会进行检查。StringBuffer 中。StringBuffer 就包含了该语法树节点的最终、重构后的SQL文本。
toString in class TParseTreeNodepublic void setCommand(String command)
public void parseImportCommand()
public void accept(TParseTreeVisitor v)
TParseTreeNodeaccept in interface Visitableaccept in class TParseTreeNodev - visitor is a descendant class of TParseTreeVisitorpublic void acceptChildren(TParseTreeVisitor v)
TParseTreeNodeacceptChildren in interface VisitableacceptChildren in class TParseTreeNodev - visitor is a descendant class of TParseTreeVisitor