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org.eclipse.persistence.jpa.internal.jpql.parser
Class WhenClauseFactory

java.lang.Object
org.eclipse.persistence.jpa.internal.jpql.parser.ExpressionFactory
org.eclipse.persistence.jpa.internal.jpql.parser.WhenClauseFactory

All Implemented Interfaces:

java.lang.Comparable<ExpressionFactory>

final class WhenClauseFactory

extends ExpressionFactory

This WhenClauseFactory creates a new WhenClause when the portion of the query to parse starts with WHEN.

Since:

2.3

Version:

2.3

Author:

Pascal Filion

See Also:

WhenClause

Field Summary

(package private) static java.lang.String

ID The unique identifier of this WhenClauseFactory.

Constructor Summary

WhenClauseFactory()
Creates a new WhenClauseFactory.

Method Summary

(package private) AbstractExpression	buildExpression(AbstractExpression parent, WordParser wordParser, java.lang.String word, JPQLQueryBNF queryBNF, AbstractExpression expression, boolean tolerant) Creates a new Expression.
(package private) IJPAVersion	getVersion() Returns the supported JPA version.

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

compareTo, equals, getId, hashCode, identifiers, toString

Methods inherited from class java.lang.Object

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

Field Detail

ID

static final java.lang.String ID

The unique identifier of this WhenClauseFactory.

See Also:

Constant Field Values

Constructor Detail

WhenClauseFactory

WhenClauseFactory()

Creates a new WhenClauseFactory.

Method Detail

buildExpression

AbstractExpression buildExpression(AbstractExpression parent,
                                   WordParser wordParser,
                                   java.lang.String word,
                                   JPQLQueryBNF queryBNF,
                                   AbstractExpression expression,
                                   boolean tolerant)

Creates a new Expression.

Specified by:

buildExpression in class ExpressionFactory

Parameters:

parent - The parent expression

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

word - The current word to parse

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 Expression representing a portion or the totality of the given text

getVersion

IJPAVersion getVersion()

Returns the supported JPA version.

Overrides:

getVersion in class ExpressionFactory

Returns:

The version for which this factory can support

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