org.eclipse.persistence.jpa.jpql.parser.DefaultEclipseLinkJPQLGrammar Maven / Gradle / Ivy
/*
* Copyright (c) 2006, 2022 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
// 04/21/2022: Tomas Kraus
// - Issue 1474: Update JPQL Grammar for Jakarta Persistence 2.2, 3.0 and 3.1
package org.eclipse.persistence.jpa.jpql.parser;
import org.eclipse.persistence.jpa.jpql.JPAVersion;
/**
* This {@link JPQLGrammar JPQL grammar} provides support for parsing JPQL queries defined by the
* latest Jakarta Persistence functional specification and the latest EclipseLink.
*
* 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.
*
* @see DefaultJPQLGrammar
* @see DefaultEclipseLinkJPQLGrammar
*
* @author Pascal Filion
*/
@SuppressWarnings("nls")
public final class DefaultEclipseLinkJPQLGrammar implements JPQLGrammar {
/**
* The persistence provider name: EclipseLink.
*/
public static final String PROVIDER_NAME = "EclipseLink";
/**
* Creates a new DefaultEclipseLinkJPQLGrammar.
*/
private DefaultEclipseLinkJPQLGrammar() {
super();
}
/**
* Returns the singleton instance of this class.
*
* @return The latest {@link JPQLGrammar} that supports EclipseLink
*/
public static JPQLGrammar instance() {
return EclipseLinkJPQLGrammar4_0.instance();
}
@Override
public ExpressionRegistry getExpressionRegistry() {
return instance().getExpressionRegistry();
}
@Override
public JPAVersion getJPAVersion() {
return instance().getJPAVersion();
}
@Override
public String getProvider() {
return instance().getProvider();
}
@Override
public String getProviderVersion() {
return instance().getProviderVersion();
}
@Override
public String toString() {
return instance().toString();
}
}