Package gudusoft.gsqlparser.parser

Class MdxSqlParser

Object

gudusoft.gsqlparser.parser.AbstractSqlParser

gudusoft.gsqlparser.parser.MdxSqlParser

All Implemented Interfaces:

SqlParser

public class MdxSqlParser
extends AbstractSqlParser

MDX (Multidimensional Expressions) SQL parser implementation.

This parser handles MDX-specific syntax including:

• MDX SELECT statements with axes specifications
• SCOPE statements for calculated members
• IF/CASE/END block structures
• MDX-specific functions and operators

Design Notes:

• Extends AbstractSqlParser using the template method pattern
• Uses TLexerMdx for tokenization
• Uses TParserMdx for parsing
• Delimiter character: ';' for MDX statements

Usage Example:

 // Get MDX parser from factory
 SqlParser parser = SqlParserFactory.get(EDbVendor.dbvmdx);

 // Build context
 ParserContext context = new ParserContext.Builder(EDbVendor.dbvmdx)
     .sqlText("SELECT [Measures].[Sales] ON COLUMNS FROM [Cube]")
     .build();

 // Parse
 SqlParseResult result = parser.parse(context);

 // Access statements
 TStatementList statements = result.getSqlStatements();
 

Since:

3.2.0.0

See Also:

• SqlParser
• AbstractSqlParser
• TLexerMdx
• TParserMdx

Nested Class Summary

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

AbstractSqlParser.PreparedSqlReader

Field Summary

Fields

Modifier and Type	Field	Description
TLexerMdx	flexer	The MDX 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	Description
MdxSqlParser()	Construct MDX SQL parser.

Method Summary

Modifier and Type	Method	Description
protected void	extractVendorRawStatements(SqlParseResult.Builder builder)	Call MDX-specific raw statement extraction logic.
protected TCustomLexer	getLexer(ParserContext context)	Return the MDX lexer instance.
protected TCustomParser	getParser(ParserContext context, TSourceTokenList tokens)	Return the MDX parser instance with updated token list.
protected TCustomParser	getSecondaryParser(ParserContext context, TSourceTokenList tokens)	MDX doesn't have a secondary parser.
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 MDX-specific semantic analysis using TSQLResolver.
protected void	setupVendorParsersForExtraction()	Setup MDX parser for raw statement extraction.
protected void	tokenizeVendorSql()	Call MDX-specific tokenization logic.

Methods inherited from class gudusoft.gsqlparser.parser.AbstractSqlParser

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

Methods inherited from class java.lang.Object

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

Field Details

flexer

public TLexerMdx flexer

The MDX lexer used for tokenization

Constructor Details

MdxSqlParser

public MdxSqlParser()

Construct MDX SQL parser.

Configures the parser for MDX with default delimiter (;).

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

Method Details

getLexer

protected TCustomLexer getLexer(ParserContext context)

Return the MDX 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 MDX 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)

getSecondaryParser

protected TCustomParser getSecondaryParser(ParserContext context,
 TSourceTokenList tokens)

MDX doesn't have a secondary parser.

Overrides:

getSecondaryParser in class AbstractSqlParser

Parameters:

context - the parser context

tokens - the source token list

Returns:

null

tokenizeVendorSql

protected void tokenizeVendorSql()

Call MDX-specific tokenization logic.

Delegates to domdxtexttotokenlist which handles MDX's specific keyword recognition and token generation.

Specified by:

tokenizeVendorSql in class AbstractSqlParser

setupVendorParsersForExtraction

protected void setupVendorParsersForExtraction()

Setup MDX parser for raw statement extraction.

MDX 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 MDX-specific raw statement extraction logic.

Delegates to domdxgetrawsqlstatements which handles MDX's statement delimiters and SCOPE/END blocks.

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.

This method orchestrates the parsing of all statements.

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)

Perform MDX-specific semantic analysis using TSQLResolver.

Overrides:

performSemanticAnalysis in class AbstractSqlParser

Parameters:

context - the parser context

statements - the parsed statements (mutable)

performInterpreter

protected void performInterpreter(ParserContext context,
 TStatementList statements)

Perform interpretation/evaluation on parsed statements.

Overrides:

performInterpreter in class AbstractSqlParser

Parameters:

context - the parser context

statements - the parsed statements (mutable)