openjpa-slice/src/test/java/org/apache/openjpa/slice/SliceTestCase.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.openjpa.slice;

import javax.persistence.EntityManager;

import org.apache.openjpa.slice.jdbc.DistributedJDBCConfiguration;

public abstract class SliceTestCase extends SingleEMFTestCase {
    protected void setUp(Object... props) {
        super.setUp(props);
        assertTrue(emf.getClass() + " is not a slice configuration. Check" +
            " that BrokerFactory for the persistence unit is set to slice",
             emf.getConfiguration() instanceof DistributedJDBCConfiguration);
        
    }
    
    int count(Class<?> type) {
        EntityManager em = emf.createEntityManager();
        String query = "SELECT COUNT(p) FROM " + type.getSimpleName() + " p";
        Number number = (Number) em.createQuery(query).getSingleResult();
        return number.intValue();
    }
    
}