/*
 * 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.persistence.enhance.identity;

import java.io.Serializable;

/**
 * Entity identity used to test compound primary keys using entity as
 * relationship to more than one level.
 *
 * Test case and domain classes were originally part of the reported issue
 * <A href="https://issues.apache.org/jira/browse/OPENJPA-207">OPENJPA-207</A>
 *
 * @author Jeffrey Blattman
 * @author Pinaki Poddar
 *
 */
public final class BookId implements Serializable {
    
    private static final long serialVersionUID = 1L;
    private String name;
    private String library;


    @Override
    public boolean equals(Object o) {
        if (!(o instanceof BookId)) {
            return false;
        }

        BookId other = (BookId)o;

        if (!(getName().equals(other.getName()))) {
            return false;
        }

        if (!getLibrary().equals(other.getLibrary())) {
            return false;
        }

        return true;
    }

    @Override
    public int hashCode() {
        return safeHash(getName()) * safeHash(getLibrary());
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getLibrary() {
        return library;
    }

    public void setLibrary(String library) {
        this.library = library;
    }

    private int safeHash(Object o) {
    	return (o == null) ? 31 : o.hashCode();
    }
}
