/*******************************************************************************
* Copyright (c) 2006, 2015 Oracle and/or its affiliates. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
* which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* Oracle - initial API and implementation
*
******************************************************************************/
package org.eclipse.persistence.jpa.jpql.parser;
/**
* The query BNF describes the expression being tested by the <code>IN</code> expression.
* <p>
* JPA 1.0:
* <div><b>BNF:</b> <code>in_expression ::= state_field_path_expression [NOT] IN(in_item {, in_item}* | subquery)</code><p></div>
* JPA 2.0
* <div><b>BNF:</b> <code>in_expression ::= {state_field_path_expression | type_discriminator} [NOT] IN { ( in_item {, in_item}* ) | (subquery) | collection_valued_input_parameter }</code><p></div>
*
* @version 2.4
* @since 2.4
* @author Pascal Filion
*/
@SuppressWarnings("nls")
public final class InExpressionExpressionBNF extends JPQLQueryBNF {
/**
* The unique identifier of this <code>InExpressionExpressionBNF</code>.
*/
public static final String ID = "in_expression_expression";
/**
* Creates a new <code>InExpressionExpressionBNF</code>.
*/
public InExpressionExpressionBNF() {
super(ID);
}
/**
* {@inheritDoc}
*/
@Override
protected void initialize() {
super.initialize();
registerChild(StateFieldPathExpressionBNF.ID);
}
}