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EclipseLink build based upon Git transaction 67768906cf
/*
* Copyright (c) 2006, 2018 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 v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0,
* or the Eclipse Distribution License v. 1.0 which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
*/
// Contributors:
// Oracle - initial API and implementation
//
package org.eclipse.persistence.jpa.jpql.parser;
import org.eclipse.persistence.jpa.jpql.EclipseLinkVersion;
import org.eclipse.persistence.jpa.jpql.JPAVersion;
/**
* This {@link JPQLGrammar} provides support for parsing JPQL queries defined in JSR-337 - Java Persistence 2.0. EclipseLink 2.3
* does not add any additional support over EclipseLink 2.2.
*
* Provisional API: This interface is part of an interim API that is still under development and
* expected to change significantly before reaching stability. It is available at this early stage
* to solicit feedback from pioneering adopters on the understanding that any code that uses this
* API will almost certainly be broken (repeatedly) as the API evolves.
*
* @version 2.5
* @since 2.4
* @author Pascal Filion
*/
@SuppressWarnings("nls")
public final class EclipseLinkJPQLGrammar2_3 extends AbstractJPQLGrammar {
/**
* The singleton instance of this {@link EclipseLinkJPQLGrammar2_3}.
*/
private static final JPQLGrammar INSTANCE = new EclipseLinkJPQLGrammar2_3();
/**
* The EclipseLink version, which is 2.3.
*/
public static final EclipseLinkVersion VERSION = EclipseLinkVersion.VERSION_2_3;
/**
* Creates a new EclipseLinkJPQLGrammar2_3
.
*/
public EclipseLinkJPQLGrammar2_3() {
super();
}
/**
* Creates a new EclipseLinkJPQLGrammar2_3
.
*
* @param jpqlGrammar The {@link JPQLGrammar} to extend with the content of this one without
* instantiating the base {@link JPQLGrammar}
*/
private EclipseLinkJPQLGrammar2_3(AbstractJPQLGrammar jpqlGrammar) {
super(jpqlGrammar);
}
/**
* Extends the given {@link JPQLGrammar} with the information of this one without instantiating
* the base {@link JPQLGrammar}.
*
* @param jpqlGrammar The {@link JPQLGrammar} to extend with the content of this one without
* instantiating the base {@link JPQLGrammar}
*/
public static void extend(AbstractJPQLGrammar jpqlGrammar) {
new EclipseLinkJPQLGrammar2_3(jpqlGrammar);
}
/**
* Returns the singleton instance of this class.
*
* @return The {@link EclipseLinkJPQLGrammar2_3}
*/
public static JPQLGrammar instance() {
return INSTANCE;
}
/**
* {@inheritDoc}
*/
@Override
protected JPQLGrammar buildBaseGrammar() {
return new EclipseLinkJPQLGrammar2_2();
}
/**
* {@inheritDoc}
*/
public JPAVersion getJPAVersion() {
return JPAVersion.VERSION_2_0;
}
/**
* {@inheritDoc}
*/
public String getProvider() {
return DefaultEclipseLinkJPQLGrammar.PROVIDER_NAME;
}
/**
* {@inheritDoc}
*/
public String getProviderVersion() {
return VERSION.getVersion();
}
/**
* {@inheritDoc}
*/
@Override
protected void initializeBNFs() {
}
/**
* {@inheritDoc}
*/
@Override
protected void initializeExpressionFactories() {
}
/**
* {@inheritDoc}
*/
@Override
protected void initializeIdentifiers() {
}
/**
* {@inheritDoc}
*/
@Override
public String toString() {
return "EclipseLink 2.3";
}
}