Module eclipselink

Package org.eclipse.persistence.jpa.jpql.parser

Class GeneralIdentificationExpressionFactory

java.lang.Object

org.eclipse.persistence.jpa.jpql.parser.ExpressionFactory

org.eclipse.persistence.jpa.jpql.parser.GeneralIdentificationExpressionFactory

All Implemented Interfaces:

Comparable<ExpressionFactory>

Direct Known Subclasses:

KeyExpressionFactory, ValueExpressionFactory

public abstract class GeneralIdentificationExpressionFactory
extends ExpressionFactory

This ValueExpressionFactory creates a general identification variable, which is either with the identifier KEY or VALUE and then checks the existence of a path expression.

Version:

2.4

See Also:

KeyExpressionFactory, ValueExpressionFactory

Author:

Pascal Filion

Since:

2.3

Constructor Summary

Constructors

Constructor	Description
GeneralIdentificationExpressionFactory(String id, String identifier)	Creates a new GeneralIdentificationExpressionFactory.

Method Summary

Modifier and Type	Method	Description
protected abstract AbstractExpression	buildExpression(AbstractExpression parent)	Creates the actual expression this factory manages.
protected AbstractExpression	buildExpression(AbstractExpression parent, WordParser wordParser, String word, JPQLQueryBNF queryBNF, AbstractExpression expression, boolean tolerant)	Creates a new Expression.

Methods inherited from class org.eclipse.persistence.jpa.jpql.parser.ExpressionFactory

compareTo, equals, getExpressionRegistry, getId, hashCode, identifiers, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

GeneralIdentificationExpressionFactory

public GeneralIdentificationExpressionFactory(String id,
                                              String identifier)

Creates a new GeneralIdentificationExpressionFactory.

Parameters:

id - The unique identifier of this ExpressionFactory

identifier - The JPQL identifier handled by this factory

Method Detail

buildExpression

protected abstract AbstractExpression buildExpression(AbstractExpression parent)

Creates the actual expression this factory manages.

Parameters:

parent - The parent of this expression

Returns:

The Expression this factory manages

buildExpression

protected final AbstractExpression buildExpression(AbstractExpression parent,
                                                   WordParser wordParser,
                                                   String word,
                                                   JPQLQueryBNF queryBNF,
                                                   AbstractExpression expression,
                                                   boolean tolerant)

Description copied from class: ExpressionFactory

Creates a new Expression.

Specified by:

buildExpression in class ExpressionFactory

Parameters:

parent - The parent AbstractExpression

wordParser - The text to parse based on the current position of the cursor

word - The current word being parsed

queryBNF - The BNF grammar that was used to identifier this factory to be capable to parse a portion of the query

expression - During the parsing, it is possible the first part of an expression was parsed which needs to be used as a sub-expression of the newly created expression

Returns:

A new AbstractExpression representing the portion or the totality of the text held by WordParser starting at the cursor position