openjpa-persistence-jdbc/src/test/java/org/apache/openjpa/enhance/UnenhancedCompoundPKFieldAccess.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.enhance;

import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.IdClass;

import org.apache.openjpa.enhance.UnenhancedCompoundPKFieldAccess.PK;

@Entity
@IdClass(PK.class)
public class UnenhancedCompoundPKFieldAccess {

    @Id private int id0;
    @Id private int id1;

    protected UnenhancedCompoundPKFieldAccess() {
    }

    public UnenhancedCompoundPKFieldAccess(
        int i0, int i1) {
        id0 = i0;
        id1 = i1;
    }

    public static class PK {
        static {
            // register persistent class in JVM
            try {
                Class.forName(UnenhancedCompoundPKFieldAccess.class.getName());
            } catch (Exception e) {
                // ignore
            }
        }

        public int id0;
        public int id1;

        public PK() {
        }

        public PK(int i0, int i1) {
            id0 = i0;
            id1 = i1;
        }

        @Override
        public String toString() {
            return String.valueOf(id0)
                + "::" + String.valueOf(id1);
        }

        @Override
        public int hashCode() {
            int rs = 17;
            rs = rs * 37 + (int) (id0 ^ (id1 >>> 32));
            rs = rs * 37 + (int) (id0 ^ (id1 >>> 32));
            return rs;
        }

        @Override
        public boolean equals(Object obj) {
            if(this == obj)
                return true;
            if(obj == null || obj.getClass() != getClass())
                return false;

            PK other = (PK) obj;
            return (id0 == other.id0)
                && (id1 == other.id1);
        }
    }
}