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

java.lang.Object
org.eclipse.persistence.jpa.internal.jpql.parser.JPQLQueryBNF
org.eclipse.persistence.jpa.internal.jpql.parser.WhenClauseBNF

public final class WhenClauseBNF

extends JPQLQueryBNF

The query BNF for the when clause of the case expression.

BNF: when_clause ::= WHEN conditional_expression THEN scalar_expression

Since:

2.3

Version:

2.3

Author:

Pascal Filion

Field Summary

static java.lang.String

ID The unique identifier of this BNF rule.

Constructor Summary

WhenClauseBNF()
Creates a new WhenClauseBNF.

Method Summary

boolean	handleAggregate() Determines whether the Expression handles a collection of sub-expressions that are aggregated by logical or arithmetic operators.
(package private) void	initialize() Initializes this BNF rule by registering child BNF rules and expression factories.

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

addChildren, children, expressionFactory, expressionFactoryIds, getFallbackBNFId, getFallbackExpressionFactoryId, getId, handleCollection, hasIdentifier, identifiers, isCompound, nonCompoundChildren, registerChild, registerExpressionFactory, toString

Methods inherited from class java.lang.Object

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

Field Detail

ID

public static final java.lang.String ID

The unique identifier of this BNF rule.

See Also:

Constant Field Values

Constructor Detail

WhenClauseBNF

WhenClauseBNF()

Creates a new WhenClauseBNF.

Method Detail

handleAggregate

public boolean handleAggregate()

Determines whether the Expression handles a collection of sub-expressions that are aggregated by logical or arithmetic operators.

Overrides:

handleAggregate in class JPQLQueryBNF

Returns:

true if the sub-expression to parse might have several logical and/or arithmetic expressions; false otherwise

initialize

void initialize()

Initializes this BNF rule by registering child BNF rules and expression factories.

Overrides:

initialize in class JPQLQueryBNF