gudusoft.gsqlparser.parser

Class AnsiSqlParser

Object

gudusoft.gsqlparser.parser.AbstractSqlParser

gudusoft.gsqlparser.parser.AnsiSqlParser

All Implemented Interfaces:

SqlParser

public class AnsiSqlParser
extends AbstractSqlParser

ANSI SQL parser implementation.

This parser handles ANSI standard SQL syntax. It delegates tokenization and raw statement extraction to DB2 logic, as ANSI SQL shares similar parsing characteristics with DB2.

Design Notes:

• Extends AbstractSqlParser
• Can directly instantiate: TLexerAnsi, TParserAnsi
• Uses single parser (no secondary parser)
• Delimiter character: ';' (semicolon)
• Shares tokenization and extraction logic with DB2

Migrated from TGSqlParser:

• doansitexttotokenlist() → delegates to dodb2sqltexttotokenlist()
• doansigetrawsqlstatements() → delegates to dodb2getrawsqlstatements()

Since:

3.2.0.0

See Also:

SqlParser, AbstractSqlParser, TLexerAnsi, TParserAnsi

Nested Class Summary

Nested classes/interfaces inherited from class gudusoft.gsqlparser.parser.AbstractSqlParser

AbstractSqlParser.PreparedSqlReader

Field Summary

Fields inherited from class gudusoft.gsqlparser.parser.AbstractSqlParser

defaultDelimiterStr, delimiterChar, frameStack, globalContext, globalFrame, lexer, parserContext, sourcetokenlist, sqlcmds, sqlEnv, sqlstatements, syntaxErrors, vendor

Constructor Summary

Constructors

Constructor and Description
AnsiSqlParser() Construct ANSI SQL parser.

Method Summary

Modifier and Type	Method and Description
protected void	extractVendorRawStatements(SqlParseResult.Builder builder) Call ANSI-specific raw statement extraction logic.
protected TCustomLexer	getLexer(ParserContext context) Return the ANSI lexer instance.
protected TCustomParser	getParser(ParserContext context, TSourceTokenList tokens) Return the ANSI SQL parser instance with updated token list.
protected TStatementList	performParsing(ParserContext context, TCustomParser parser, TCustomParser secondaryParser, TSourceTokenList tokens, TStatementList rawStatements) Perform full parsing on raw ANSI SQL statements.
protected void	setupVendorParsersForExtraction() Setup ANSI parser for raw statement extraction.
protected void	tokenizeVendorSql() Call ANSI-specific tokenization logic.
String	toString()

Methods inherited from class gudusoft.gsqlparser.parser.AbstractSqlParser

afterStatementParsed, attemptErrorRecovery, copyErrorsFromStatement, doAfterTokenize, doExtractRawStatements, extractRawStatements, getanewsourcetoken, getDefaultDelimiterStr, getDelimiterChar, getErrorCount, getrawsqlstatements, getSecondaryParser, getSyntaxErrors, getVendor, handleStatementParsingException, initializeGlobalContext, isDollarFunctionDelimiter, onRawStatementComplete, onRawStatementCompleteVendorSpecific, parse, performInterpreter, performSemanticAnalysis, performTokenization, prepareSqlReader, processTokensBeforeParse, processTokensInTokenTable, setTokenHandle, tokenize, towinlinebreak

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

AnsiSqlParser

public AnsiSqlParser()

Construct ANSI SQL parser.

Configures the parser for ANSI standard SQL with default delimiter: semicolon (;)

Following the original TGSqlParser pattern, the lexer and parser are created once in the constructor and reused for all parsing operations.

Method Detail

getLexer

protected TCustomLexer getLexer(ParserContext context)

Return the ANSI lexer instance.

The lexer is created once in the constructor and reused for all parsing operations. This method simply returns the existing instance, matching the original TGSqlParser pattern where the lexer is created once and reset before each use.

Specified by:

getLexer in class AbstractSqlParser

Parameters:

context - parser context (not used, lexer already created)

Returns:

the ANSI lexer instance created in constructor

getParser

protected TCustomParser getParser(ParserContext context,
                                  TSourceTokenList tokens)

Return the ANSI SQL parser instance with updated token list.

The parser is created once in the constructor and reused for all parsing operations. This method updates the token list and returns the existing instance, matching the original TGSqlParser pattern.

Specified by:

getParser in class AbstractSqlParser

Parameters:

context - parser context (not used, parser already created)

tokens - source token list to parse

Returns:

the ANSI SQL parser instance created in constructor

tokenizeVendorSql

protected void tokenizeVendorSql()

Call ANSI-specific tokenization logic.

Delegates to dodb2sqltexttotokenlist which handles ANSI/DB2 specific keyword recognition and token generation.

This follows the original TGSqlParser pattern where doansitexttotokenlist() delegates to dodb2sqltexttotokenlist().

Specified by:

tokenizeVendorSql in class AbstractSqlParser

setupVendorParsersForExtraction

protected void setupVendorParsersForExtraction()

Setup ANSI parser for raw statement extraction.

ANSI uses a single parser, so we inject sqlcmds and update the token list for the main parser only.

Specified by:

setupVendorParsersForExtraction in class AbstractSqlParser

extractVendorRawStatements

protected void extractVendorRawStatements(SqlParseResult.Builder builder)

Call ANSI-specific raw statement extraction logic.

Delegates to dodb2getrawsqlstatements which handles ANSI/DB2 statement boundaries and compound blocks.

This follows the original TGSqlParser pattern where doansigetrawsqlstatements() delegates to dodb2getrawsqlstatements().

Specified by:

extractVendorRawStatements in class AbstractSqlParser

Parameters:

builder - result builder to populate

performParsing

protected TStatementList performParsing(ParserContext context,
                                        TCustomParser parser,
                                        TCustomParser secondaryParser,
                                        TSourceTokenList tokens,
                                        TStatementList rawStatements)

Perform full parsing on raw ANSI SQL statements.

This method parses each raw statement into a complete parse tree, handling stored procedures, functions, triggers, and nested blocks.

Specified by:

performParsing in class AbstractSqlParser

Parameters:

context - parser context

parser - main parser instance

secondaryParser - secondary parser (null for ANSI)

tokens - source token list

rawStatements - raw statements to parse

Returns:

list of parsed statements

toString

public String toString()

Overrides:

toString in class AbstractSqlParser