gudusoft.gsqlparser.parser

Class SparksqlSqlParser

Object

gudusoft.gsqlparser.parser.AbstractSqlParser

gudusoft.gsqlparser.parser.SparksqlSqlParser

All Implemented Interfaces:

SqlParser

public class SparksqlSqlParser
extends AbstractSqlParser

Apache Spark SQL parser implementation.

This parser handles SparkSQL-specific SQL syntax including:

• SparkSQL SELECT statements
• SparkSQL-specific functions (DATE, TIME, TIMESTAMP, INTERVAL)
• SparkSQL stored procedures and triggers
• SparkSQL delimiter handling

Design Notes:

• Extends AbstractSqlParser using the template method pattern
• Uses TLexerSparksql for tokenization
• Uses TParserSparksql for parsing
• Tokenization is simple, similar to MySQL
• Delimiter character: ';' for SparkSQL statements

Since:

3.2.0.0

See Also:

SqlParser, AbstractSqlParser, TLexerSparksql, TParserSparksql

Nested Class Summary

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

AbstractSqlParser.PreparedSqlReader

Field Summary

Fields

Modifier and Type	Field and Description
TLexerSparksql	flexer The SparkSQL 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
SparksqlSqlParser() Construct SparkSQL parser.

Method Summary

Modifier and Type	Method and Description
protected void	extractVendorRawStatements(SqlParseResult.Builder builder) Call SparkSQL-specific raw statement extraction logic.
protected TCustomLexer	getLexer(ParserContext context) Return the SparkSQL lexer instance.
protected TCustomParser	getParser(ParserContext context, TSourceTokenList tokens) Return the SparkSQL 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 SparkSQL parser for raw statement extraction.
protected void	tokenizeVendorSql() Call SparkSQL-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 TLexerSparksql flexer

The SparkSQL lexer used for tokenization

Constructor Detail

SparksqlSqlParser

public SparksqlSqlParser()

Construct SparkSQL parser.

Configures the parser for Apache Spark SQL with default delimiter (;).

Method Detail

getLexer

protected TCustomLexer getLexer(ParserContext context)

Return the SparkSQL 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 SparkSQL 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 SparkSQL-specific tokenization logic.

Specified by:

tokenizeVendorSql in class AbstractSqlParser

setupVendorParsersForExtraction

protected void setupVendorParsersForExtraction()

Setup SparkSQL parser for raw statement extraction.

Specified by:

setupVendorParsersForExtraction in class AbstractSqlParser

extractVendorRawStatements

protected void extractVendorRawStatements(SqlParseResult.Builder builder)

Call SparkSQL-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)