Module org.eclipse.persistence.jpa.jpql

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

Class ExistsExpressionBNF

java.lang.Object

org.eclipse.persistence.jpa.jpql.parser.JPQLQueryBNF

org.eclipse.persistence.jpa.jpql.parser.ExistsExpressionBNF

public final class ExistsExpressionBNF
extends JPQLQueryBNF

The query BNF for the exists expression.

BNF: exists_expression::= [NOT] EXISTS (subquery)

Since:

2.3

Version:

2.4

Field Summary

Fields

Modifier and Type	Field	Description
static final String	ID	The unique identifier of this BNF rule.

Constructor Summary

Constructors

Constructor	Description
ExistsExpressionBNF()	Creates a new ExistsExpressionBNF.

Method Summary

Modifier and Type	Method	Description
protected void	initialize()	Initializes this BNF by registering child JPQLQueryBNFs and ExpressionFactories.

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

children, getExpressionFactory, getExpressionFactoryIds, getExpressionRegistry, getFallbackBNFId, getFallbackExpressionFactoryId, getId, getIdentifiers, handleAggregate, handleCollection, handlesNestedArray, handleSubExpression, hasChild, hasIdentifier, isCompound, nonCompoundChildren, registerChild, registerExpressionFactory, setCompound, setFallbackBNFId, setFallbackExpressionFactoryId, setHandleAggregate, setHandleCollection, setHandleNestedArray, setHandleSubExpression, toString, toString

Methods inherited from class java.lang.Object

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

Field Details

ID

public static final String ID

The unique identifier of this BNF rule.

See Also:

• Constant Field Values

Constructor Details

ExistsExpressionBNF

public ExistsExpressionBNF()

Creates a new ExistsExpressionBNF.

Method Details

initialize

protected void initialize()

Description copied from class: JPQLQueryBNF

Initializes this BNF by registering child JPQLQueryBNFs and ExpressionFactories.

Overrides:

initialize in class JPQLQueryBNF