Package org.eclipse.persistence.internal.jpa.parsing

Class GenerationContext

java.lang.Object

org.eclipse.persistence.internal.jpa.parsing.GenerationContext

Direct Known Subclasses:

SelectGenerationContext

public class GenerationContext
extends Object

INTERNAL

Purpose: Maintain the generation context for an EJBQL query

Responsibilities:

• Maintain a table of expression builders and alias's
• Maintain the base query class
• Maintain a handle to the session
• Maintain a handle to the parse tree

Since:

TopLink 4.0

Author:

Jon Driscoll and Joel Lucuik

Field Summary

Fields

Modifier and Type	Field	Description
protected Expression	baseExpression
protected Class	baseQueryClass
protected Hashtable	expressions
protected boolean	isNotIndicatedInMemberOf
protected MemberOfNode	memberOfNode
protected ParseTree	parseTree
protected ParseTreeContext	parseTreeContext
protected AbstractSession	session

Constructor Summary

Constructors

Constructor	Description
GenerationContext()
GenerationContext(ParseTreeContext newContext, AbstractSession newSession, ParseTree newParseTree)

Method Summary

Modifier and Type	Method	Description
void	addExpression(Expression expression, String aliasName)
Expression	expressionFor(String aliasName)
Expression	getBaseExpression()
Class	getBaseQueryClass()
MemberOfNode	getMemberOfNode()
ParseTree	getParseTree()
ParseTreeContext	getParseTreeContext()
AbstractSession	getSession()
boolean	hasMemberOfNode()
boolean	isSelectGenerationContext()
Expression	joinVariables(Set variables)
void	setBaseExpression(String variable, Expression expr)	Caches the specified expression under the variable name for the base query class.
void	setBaseQueryClass(Class newBaseQueryClass)
void	setMemberOfNode(MemberOfNode newMemberOfNode)
void	setParseTree(ParseTree parseTree)
void	setParseTreeContext(ParseTreeContext newParseTreeContext)
void	setSession(AbstractSession newSession)
boolean	shouldCheckSelectNodeBeforeResolving()
boolean	shouldUseOuterJoins()
boolean	useParallelExpressions()

Methods inherited from class java.lang.Object

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

Field Detail

session

protected AbstractSession session

parseTreeContext

protected ParseTreeContext parseTreeContext

baseQueryClass

protected Class baseQueryClass

baseExpression

protected Expression baseExpression

expressions

protected Hashtable expressions

parseTree

protected ParseTree parseTree

isNotIndicatedInMemberOf

protected boolean isNotIndicatedInMemberOf

memberOfNode

protected MemberOfNode memberOfNode

Constructor Detail

GenerationContext

public GenerationContext()

GenerationContext

public GenerationContext(ParseTreeContext newContext,
                         AbstractSession newSession,
                         ParseTree newParseTree)

Method Detail

addExpression

public void addExpression(Expression expression,
                          String aliasName)

expressionFor

public Expression expressionFor(String aliasName)

getBaseQueryClass

public Class getBaseQueryClass()

getParseTreeContext

public ParseTreeContext getParseTreeContext()

getParseTree

public ParseTree getParseTree()

getSession

public AbstractSession getSession()

setBaseQueryClass

public void setBaseQueryClass(Class newBaseQueryClass)

setBaseExpression

public void setBaseExpression(String variable,
                              Expression expr)

Caches the specified expression under the variable name for the base query class.

getBaseExpression

public Expression getBaseExpression()

setParseTree

public void setParseTree(ParseTree parseTree)

setParseTreeContext

public void setParseTreeContext(ParseTreeContext newParseTreeContext)

setSession

public void setSession(AbstractSession newSession)

useParallelExpressions

public boolean useParallelExpressions()

shouldCheckSelectNodeBeforeResolving

public boolean shouldCheckSelectNodeBeforeResolving()

setMemberOfNode

public void setMemberOfNode(MemberOfNode newMemberOfNode)

getMemberOfNode

public MemberOfNode getMemberOfNode()

hasMemberOfNode

public boolean hasMemberOfNode()

isSelectGenerationContext

public boolean isSelectGenerationContext()

shouldUseOuterJoins

public boolean shouldUseOuterJoins()

joinVariables

public Expression joinVariables(Set variables)