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/*
 * Copyright 2008, Unitils.org
 * 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.unitils.orm.jpa.util;

import java.lang.reflect.Method;

import org.unitils.orm.common.util.OrmConfig;
import org.unitils.util.CollectionUtils;

/**
 * Value object representing a test object's configuration of a JPA EntityManagerFactory
 * 
 * @author Filip Neven
 * @author Tim Ducheyne
 */
public class JpaConfig
    extends OrmConfig {
    /**
     * The name of the persistence unit, as defined in the persistence config file
     */
    private String persistenceUnitName;

    /**
     * Creates a new instance
     * 
     * @param persistenceUnitName
     *     The name of the persistence unit, as defined in the persistence config file
     * @param configFile
     *     The name of the persistence.xml file. May be null: in this case, we try to find a
     *     persistence.xml file in the default location META-INF/persistence.xml
     * @param configMethod
     *     Custom configuration method, null if not available
     */
    public JpaConfig(String persistenceUnitName, String configFile, Method configMethod) {
        super(CollectionUtils.asSet(configFile), configMethod);
        this.persistenceUnitName = persistenceUnitName;
    }

    /**
     * @return The name of the persistence unit, defined in the persistence config file
     */
    public String getPersistenceUnitName() {
        return persistenceUnitName;
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = super.hashCode();
        result = prime * result + ((persistenceUnitName == null) ? 0 : persistenceUnitName.hashCode());
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (!super.equals(obj))
            return false;
        if (getClass() != obj.getClass())
            return false;
        final JpaConfig other = (JpaConfig) obj;
        if (persistenceUnitName == null) {
            if (other.persistenceUnitName != null)
                return false;
        } else if (!persistenceUnitName.equals(other.persistenceUnitName))
            return false;
        return true;
    }
}