gudusoft.gsqlparser.parser

Class SybaseAseSqlParser

Object

gudusoft.gsqlparser.parser.AbstractSqlParser

gudusoft.gsqlparser.parser.SybaseAseSqlParser

All Implemented Interfaces:

SqlParser

public class SybaseAseSqlParser
extends AbstractSqlParser

Sybase ASE SQL parser implementation.

This parser handles Sybase ASE-specific SQL syntax including:

• Sybase ASE stored procedures with GO statement boundaries
• Sybase ASE BEGIN/END blocks
• Sybase ASE TRY/CATCH blocks
• Sybase ASE-specific statement types

Design Notes:

• Extends AbstractSqlParser using the template method pattern
• Uses TLexerSybasease for tokenization
• Uses TParserSybasease for parsing
• Tokenization and statement extraction similar to MSSQL
• Delimiter character: ';' for Sybase ASE statements

Since:

3.2.0.0

See Also:

SqlParser, AbstractSqlParser, TLexerSybasease, TParserSybasease

Nested Class Summary

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

AbstractSqlParser.PreparedSqlReader

Field Summary

Fields

Modifier and Type	Field and Description
TLexerSybasease	flexer The Sybase ASE lexer used for tokenization

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
SybaseAseSqlParser() Construct Sybase ASE SQL parser.

Method Summary

Modifier and Type	Method and Description
protected void	extractVendorRawStatements(SqlParseResult.Builder builder) Call Sybase ASE-specific raw statement extraction logic.
protected TCustomLexer	getLexer(ParserContext context) Return the Sybase ASE lexer instance.
protected TCustomParser	getParser(ParserContext context, TSourceTokenList tokens) Return the Sybase ASE parser instance with updated token list.
protected void	performInterpreter(ParserContext context, TStatementList statements) Perform interpretation/evaluation on parsed statements.
protected TStatementList	performParsing(ParserContext context, TCustomParser parser, TCustomParser secondaryParser, TSourceTokenList tokens, TStatementList rawStatements) Perform full parsing of statements with syntax checking.
protected void	performSemanticAnalysis(ParserContext context, TStatementList statements) Perform semantic analysis on parsed statements.
protected void	setupVendorParsersForExtraction() Setup Sybase ASE parser for raw statement extraction.
protected void	tokenizeVendorSql() Call Sybase ASE-specific tokenization logic.
List<TCustomSqlStatement>	validateRecognizedStatements(TStatementList stmts) Post-parse policy validation ("recognize then reject").

Methods inherited from class gudusoft.gsqlparser.parser.AbstractSqlParser

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

Methods inherited from class Object

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

Field Detail

flexer

public TLexerSybasease flexer

The Sybase ASE lexer used for tokenization

Constructor Detail

SybaseAseSqlParser

public SybaseAseSqlParser()

Construct Sybase ASE SQL parser.

Configures the parser for Sybase ASE with default delimiter (;).

Method Detail

validateRecognizedStatements

public List<TCustomSqlStatement> validateRecognizedStatements(TStatementList stmts)

Post-parse policy validation ("recognize then reject"). Called by TGSqlParser after every statement is parsed. Attaches a vendor error to each recognised-but-foreign statement and returns them.

Not hooked at raw-extraction time: parsing REPLACES some statement objects (the refined statement is rebuilt from the parse-tree node — e.g. DELETE STATISTICS and READTEXT), and an error attached to the raw object vanishes with it. Post-parse, the statement list is final. This was measured, not assumed: raw-attached errors survived for DUMP TRAN but disappeared for DELETE STATISTICS and READTEXT.

Parameters:

stmts - the fully parsed statement list

Returns:

statements this vendor rejects (errors already attached), or null

getLexer

protected TCustomLexer getLexer(ParserContext context)

Return the Sybase ASE lexer instance.

Specified by:

getLexer in class AbstractSqlParser

Parameters:

context - the parser context

Returns:

configured lexer instance (never null)

getParser

protected TCustomParser getParser(ParserContext context,
                                  TSourceTokenList tokens)

Return the Sybase ASE parser instance with updated token list.

Specified by:

getParser in class AbstractSqlParser

Parameters:

context - the parser context

tokens - the source token list

Returns:

configured parser instance (never null)

tokenizeVendorSql

protected void tokenizeVendorSql()

Call Sybase ASE-specific tokenization logic.

Sybase ASE uses MSSQL-like tokenization.

Specified by:

tokenizeVendorSql in class AbstractSqlParser

setupVendorParsersForExtraction

protected void setupVendorParsersForExtraction()

Setup Sybase ASE parser for raw statement extraction.

Specified by:

setupVendorParsersForExtraction in class AbstractSqlParser

extractVendorRawStatements

protected void extractVendorRawStatements(SqlParseResult.Builder builder)

Call Sybase ASE-specific raw statement extraction logic.

Specified by:

extractVendorRawStatements in class AbstractSqlParser

Parameters:

builder - the result builder to populate with raw statements

performParsing

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

Perform full parsing of statements with syntax checking.

Specified by:

performParsing in class AbstractSqlParser

Parameters:

context - the parser context

parser - the main parser instance

secondaryParser - secondary parser (may be null)

tokens - the source token list

rawStatements - raw statements already extracted (never null)

Returns:

statement list with parsed AST (never null)

performSemanticAnalysis

protected void performSemanticAnalysis(ParserContext context,
                                       TStatementList statements)

Description copied from class: AbstractSqlParser

Perform semantic analysis on parsed statements.

Hook Method: Default implementation does nothing. Override to provide vendor-specific semantic analysis.

Typical Implementation:

• Column-to-table resolution (TSQLResolver)
• Dataflow analysis
• Reference resolution
• Scope resolution

Overrides:

performSemanticAnalysis in class AbstractSqlParser

Parameters:

context - the parser context

statements - the parsed statements (mutable)

performInterpreter

protected void performInterpreter(ParserContext context,
                                  TStatementList statements)

Description copied from class: AbstractSqlParser

Perform interpretation/evaluation on parsed statements.

Hook Method: Default implementation does nothing. Override to provide AST interpretation/evaluation.

Typical Implementation:

• Execute simple SQL statements
• Evaluate expressions
• Constant folding
• Static analysis

Overrides:

performInterpreter in class AbstractSqlParser

Parameters:

context - the parser context

statements - the parsed statements (mutable)