NamedQueryParserOpenJpa.java

/*
 * Copyright 2014 Dayatang Open Source..
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.dayatang.persistence.jpa.namedqueryparser;

import org.apache.openjpa.persistence.EntityManagerImpl;
import org.dayatang.persistence.jpa.EntityManagerProvider;
import org.dayatang.persistence.jpa.NamedQueryParser;


/**
 * NamedQueryParser接口的OpenJPA实现
 * @author yyang
 */
public class NamedQueryParserOpenJpa extends NamedQueryParser {

    public NamedQueryParserOpenJpa() {
    }

    public NamedQueryParserOpenJpa(EntityManagerProvider entityManagerProvider) {
        super(entityManagerProvider);
    }
    
    @Override
    public String getQueryStringOfNamedQuery(String queryName) {
        EntityManagerImpl entityManagerImpl = (EntityManagerImpl) getEntityManager().getDelegate();
        return entityManagerImpl.createNamedQuery(queryName).getQueryString();
    }
    
}