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/*******************************************************************************
 * 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 HAVING construct enables conditions to be specified that further restrict the query
 * result as restrictions upon the groups.
 *
 * BNF: having_clause ::= HAVING conditional_expression
 *
 * @version 2.5
 * @since 2.3
 * @author Pascal Filion
 */
public final class HavingClause extends AbstractConditionalClause {

    /**
     * Creates a new HavingClause.
     *
     * @param parent The parent of this expression
     */
    public HavingClause(AbstractExpression parent) {
        super(parent, HAVING);
    }

    /**
     * {@inheritDoc}
     */
    public void accept(ExpressionVisitor visitor) {
        visitor.visit(this);
    }

    /**
     * {@inheritDoc}
     */
    public JPQLQueryBNF getQueryBNF() {
        return getQueryBNF(HavingClauseBNF.ID);
    }
}