/*
 * 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.jdbc.persistence.classcriteria;

import java.io.Serializable;

import javax.persistence.Column;
import javax.persistence.DiscriminatorColumn;
import javax.persistence.DiscriminatorType;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Inheritance;
import javax.persistence.InheritanceType;
import javax.persistence.Table;
import javax.persistence.Transient;

@Entity
@Table(name = "ITEMTABLE")
@Inheritance(strategy = InheritanceType.SINGLE_TABLE)
@DiscriminatorColumn(name = "ITEM_TYPE", discriminatorType = DiscriminatorType.STRING, length = 8)
public class Item implements Serializable {
    private static final long serialVersionUID = 3375001494950016360L;

    @Id
    @GeneratedValue
    @Column(name = "UID1")
    private int id;

    @Column
    private String title;

    @Transient
    private float rating;

    protected Item() {
        super();
    }

    public Item(String title) {
        super();
        this.title = title;
    }

    public int getId() {
        return id;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        if (title == null || title.trim().length() == 0) {
            throw new IllegalArgumentException("null or empty title not allowed");
        }
        this.title = title;
    }

    public float getRating() {
        return rating;
    }

    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }

        final Item item = (Item) o;

        return id == item.id;
    }

    public int hashCode() {
        return id;
    }
}