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/*******************************************************************************
* Copyright (c) 2006, 2014 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.tools;
import org.eclipse.persistence.jpa.jpql.AbstractGrammarValidator;
import org.eclipse.persistence.jpa.jpql.JPAVersion;
import org.eclipse.persistence.jpa.jpql.LiteralVisitor;
import org.eclipse.persistence.jpa.jpql.parser.JPQLGrammar;
/**
* This validator is responsible to validate a JPQL query grammatically purely based on the JPA
* specification document.
*
* @see JSR 220: Enterprise JavaBeans 3.0
* @see JSR 317: Java Persistence 2.0
* @see JSR 338: Java Persistence 2.1
* @see DefaultSemanticValidator
*
* 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
*/
public class DefaultGrammarValidator extends AbstractGrammarValidator {
/**
* Creates a new DefaultGrammarValidator.
*
* @param jpqlGrammar The {@link JPQLGrammar} that defines how the JPQL query was parsed
*/
public DefaultGrammarValidator(JPQLGrammar jpqlGrammar) {
super(jpqlGrammar);
}
/**
* {@inheritDoc}
*/
@Override
protected LiteralVisitor buildLiteralVisitor() {
return new DefaultLiteralVisitor();
}
/**
* {@inheritDoc}
*/
@Override
protected OwningClauseVisitor buildOwningClauseVisitor() {
return new OwningClauseVisitor();
}
/**
* {@inheritDoc}
*/
@Override
protected boolean isJoinFetchIdentifiable() {
return false;
}
/**
* {@inheritDoc}
*/
@Override
protected boolean isSubqueryAllowedAnywhere() {
return getJPAVersion().isNewerThanOrEqual(JPAVersion.VERSION_2_1);
}
}