/*
 * 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.embed.compositepk;

import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.Id;
import javax.persistence.ManyToOne;
import javax.persistence.NamedQuery;
import javax.persistence.Table;

@Entity
@Table(name = "TOPIC")
@NamedQuery(name = "bySubject", query = "SELECT t FROM Topic t WHERE t.subject = :subject")
public class Topic {
    @Id
	@Column(name = "ID")
	private Integer id;

	@ManyToOne(fetch = FetchType.EAGER, cascade = CascadeType.MERGE)
//    @JoinColumns({ @JoinColumn(table = "TOPIC", name = "SUBJECTNUMMER", referencedColumnName = "SUBJECTNUMMER"),
  //          @JoinColumn(table = "TOPIC", name = "CODE_SUBJECTTYPE", referencedColumnName = "CODE_SUBJECTTYPE") })
	private Subject subject;

	public Topic() {
	}

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public Subject getSubject() {
        return subject;
    }

    public void setSubject(Subject subject) {
        this.subject = subject;
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((id == null) ? 0 : id.hashCode());
        result = prime * result + ((subject == null) ? 0 : subject.hashCode());
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (getClass() != obj.getClass())
            return false;
        Topic other = (Topic) obj;
        if (id == null) {
            if (other.id != null)
                return false;
        } else if (!id.equals(other.id))
            return false;
        if (subject == null) {
            if (other.subject != null)
                return false;
        } else if (!subject.equals(other.subject))
            return false;
        return true;
    }
}