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

Class ExtractExpressionBNF

java.lang.Object

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

org.eclipse.persistence.jpa.jpql.parser.ExtractExpressionBNF

public final class ExtractExpressionBNF
extends JPQLQueryBNF

The query BNF for the EXTRACT function.

BNF: extract_expression ::= EXTRACT(date_part_literal [FROM] scalar_expression))

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
ExtractExpressionBNF()	Creates a new ExtractExpressionBNF.

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

ExtractExpressionBNF

public ExtractExpressionBNF()

Creates a new ExtractExpressionBNF.

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