gudusoft.gsqlparser.parser

Class OpenEdgeSqlParser

Object

gudusoft.gsqlparser.parser.AbstractSqlParser

gudusoft.gsqlparser.parser.OpenEdgeSqlParser

All Implemented Interfaces:

SqlParser

public class OpenEdgeSqlParser
extends AbstractSqlParser

Progress OpenEdge SQL parser implementation.

This parser handles OpenEdge-specific SQL syntax including:

• OpenEdge-specific DML/DDL
• Special token handling (ORDER without BY, WITH CHECK, etc.)
• Statement delimiters (semicolon)

Design Notes:

• Extends AbstractSqlParser using the template method pattern
• Uses TLexerOpenedge for tokenization
• Uses TParserOpenedge for parsing
• Delimiter character: ';' for SQL statements
• Shares tokenization and raw extraction logic with MSSQL (with vendor-specific adjustments)

Usage Example:

 // Get OpenEdge parser from factory
 SqlParser parser = SqlParserFactory.get(EDbVendor.dbvopenedge);

 // Build context
 ParserContext context = new ParserContext.Builder(EDbVendor.dbvopenedge)
     .sqlText("SELECT * FROM Customer WHERE CustNum = 1")
     .build();

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

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

Since:

3.2.0.0

See Also:

SqlParser, AbstractSqlParser, TLexerOpenedge, TParserOpenedge

Nested Class Summary

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

AbstractSqlParser.PreparedSqlReader

Field Summary

Fields

Modifier and Type	Field and Description
TLexerOpenedge	flexer The OpenEdge 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
OpenEdgeSqlParser() Construct OpenEdge SQL parser.

Method Summary

Modifier and Type	Method and Description
protected void	extractVendorRawStatements(SqlParseResult.Builder builder) Call OpenEdge-specific raw statement extraction logic.
protected TCustomLexer	getLexer(ParserContext context) Return the OpenEdge lexer instance.
protected TCustomParser	getParser(ParserContext context, TSourceTokenList tokens) Return the OpenEdge SQL 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 OpenEdge-specific semantic analysis using TSQLResolver.
protected void	setupVendorParsersForExtraction() Setup OpenEdge parser for raw statement extraction.
protected void	tokenizeVendorSql() Call OpenEdge-specific tokenization logic.

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, 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 TLexerOpenedge flexer

The OpenEdge lexer used for tokenization

Constructor Detail

OpenEdgeSqlParser

public OpenEdgeSqlParser()

Construct OpenEdge SQL parser.

Configures the parser for OpenEdge database 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 Detail

getLexer

protected TCustomLexer getLexer(ParserContext context)

Return the OpenEdge 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 OpenEdge SQL 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 OpenEdge-specific tokenization logic.

OpenEdge shares tokenization logic with MSSQL but with OpenEdge-specific adjustments.

Specified by:

tokenizeVendorSql in class AbstractSqlParser

setupVendorParsersForExtraction

protected void setupVendorParsersForExtraction()

Setup OpenEdge parser for raw statement extraction.

OpenEdge 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 OpenEdge-specific raw statement extraction logic.

OpenEdge shares raw extraction logic with MSSQL but with OpenEdge-specific token handling.

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 OpenEdge-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)