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

Class UnionClauseBNF

java.lang.Object

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

org.eclipse.persistence.jpa.jpql.parser.UnionClauseBNF

public final class UnionClauseBNF
extends JPQLQueryBNF

The query BNF for the order by clause.

BNF: union_clause ::= { UNION | INTERSECT | EXCEPT } [ALL] subquery

Version:

2.4

Author:

James Sutherland

Field Summary

Fields

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

Constructor Summary

Constructors

Constructor	Description
UnionClauseBNF()	Creates a new UnionClauseBNF.

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

UnionClauseBNF

public UnionClauseBNF()

Creates a new UnionClauseBNF.

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