org.eclipse.persistence.jpa.jpql.parser
Class VirtualJPQLQueryBNF

java.lang.Object
  org.eclipse.persistence.jpa.jpql.parser.JPQLQueryBNF
      org.eclipse.persistence.jpa.jpql.parser.VirtualJPQLQueryBNF

public final class VirtualJPQLQueryBNF
extends JPQLQueryBNF

This JPQLQueryBNF can be used as a virtual BNF, which can wrap another BNF or BNFs and modify the default behavior.

The unique identifier for this BNF is automatically generated and can be retrieved with JPQLQueryBNF.getId().

Once this BNF is no longer needed, dispose() needs to be called.

Version:

2.4

Author:

Pascal Filion

Since:

2.4

Constructor Summary

VirtualJPQLQueryBNF(JPQLGrammar jpqlGrammar)
Creates a new VirtualJPQLQueryBNF.

Method Summary

void	dispose() Disposes this "virtual" query BNF.
void	registerFactory(java.lang.String expressionFactoryId) Registers a unique identifier that will be used to create the Expression representing this BNF rule.
void	registerQueryBNF(java.lang.String queryBNFId) Registers the unique identifier of the BNF rule as a child of this BNF rule.

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

children, getExpressionFactory, getExpressionFactoryIds, getExpressionRegistry, getFallbackBNFId, getFallbackExpressionFactoryId, getId, getIdentifiers, handleAggregate, handleCollection, handlesSubExpression, hasIdentifier, initialize, isCompound, nonCompoundChildren, registerChild, registerExpressionFactory, setCompound, setFallbackBNFId, setFallbackExpressionFactoryId, setHandleAggregate, setHandleCollection, setHandleSubExpression, toString, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

VirtualJPQLQueryBNF

public VirtualJPQLQueryBNF(JPQLGrammar jpqlGrammar)

Creates a new VirtualJPQLQueryBNF.

Parameters:

jpqlGrammar - The JPQLGrammar to integrate this virtual query BNF

Throws:

java.lang.NullPointerException - If the given JPQLGrammar is null

Method Detail

dispose

public void dispose()

Disposes this "virtual" query BNF.

registerFactory

public void registerFactory(java.lang.String expressionFactoryId)

Registers a unique identifier that will be used to create the Expression representing this BNF rule.

Parameters:

expressionFactoryId - The unique identifier that is responsible to create the Expression for this BNF rule

registerQueryBNF

public void registerQueryBNF(java.lang.String queryBNFId)

Registers the unique identifier of the BNF rule as a child of this BNF rule.

Parameters:

queryBNFId - The unique identifier of the BNF rule

Throws:

java.lang.NullPointerException - The queryBNFId cannot be null