org.apache.derby.impl.sql.compile
Class ParserImpl

java.lang.Object
  org.apache.derby.impl.sql.compile.ParserImpl

All Implemented Interfaces:

Parser

public class ParserImpl

extends java.lang.Object

implements Parser

Field Summary

protected java.lang.Object	cachedParser
protected java.lang.Object	cachedTokenManager
protected CompilerContext	cc
protected CharStream	charStream
(package private) static int	LARGE_TOKEN_SIZE
protected java.lang.String	SQLtext

Constructor Summary

ParserImpl(CompilerContext cc)
Constructor for Parser

Method Summary

protected java.lang.Object	getParser() new parser, appropriate for the ParserImpl object.
java.lang.String	getSQLtext() Returns the current SQL text string that is being parsed.
protected java.lang.Object	getTokenManager() Returns a initialized (clean) TokenManager, paired w. the Parser in getParser, Appropriate for this ParserImpl object.
protected QueryTreeNode	parseGoalProduction(java.lang.String statementSQLText, java.lang.Object[] paramDefaults) Parse the goal production, e.g.
QueryTreeNode	parseStatement(java.lang.String statementSQLText)
QueryTreeNode	parseStatement(java.lang.String statementSQLText, java.lang.Object[] paramDefaults) Parse a statement and return a query tree.

Methods inherited from class java.lang.Object

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

Field Detail

LARGE_TOKEN_SIZE

static final int LARGE_TOKEN_SIZE

See Also:

Constant Field Values

cachedParser

protected java.lang.Object cachedParser

cachedTokenManager

protected java.lang.Object cachedTokenManager

charStream

protected CharStream charStream

SQLtext

protected java.lang.String SQLtext

cc

protected final CompilerContext cc

Constructor Detail

ParserImpl

public ParserImpl(CompilerContext cc)

Constructor for Parser

Method Detail

parseStatement

public QueryTreeNode parseStatement(java.lang.String statementSQLText)
                             throws StandardException

Specified by:

parseStatement in interface Parser

Throws:

StandardException

getTokenManager

protected java.lang.Object getTokenManager()

Returns a initialized (clean) TokenManager, paired w. the Parser in getParser, Appropriate for this ParserImpl object.

getParser

protected java.lang.Object getParser()

new parser, appropriate for the ParserImpl object.

parseStatement

public QueryTreeNode parseStatement(java.lang.String statementSQLText,
                                    java.lang.Object[] paramDefaults)
                             throws StandardException

Parse a statement and return a query tree. Implements the Parser interface

Specified by:

parseStatement in interface Parser

Parameters:

paramDefaults - parameter defaults. Passed around as an array of objects, but is really an array of StorableDataValues

Returns:

A QueryTree representing the parsed statement

Throws:

StandardException - Thrown on error

parseGoalProduction

protected QueryTreeNode parseGoalProduction(java.lang.String statementSQLText,
                                            java.lang.Object[] paramDefaults)
                                     throws ParseException,
                                            TokenMgrError,
                                            StandardException

Parse the goal production, e.g. "statement" for the normal SQL parser.

Parameters:

statementSQLText - The Statement to parse

paramDefaults - parameter defaults. Passed around as an array of objects, but is really an array of StorableDataValues

Returns:

A QueryTree representing the parsed statement

Throws:

ParseException

TokenMgrError

StandardException

getSQLtext

public java.lang.String getSQLtext()

Returns the current SQL text string that is being parsed.

Specified by:

getSQLtext in interface Parser

Returns:

Current SQL text string.