/*
* 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.models.library;
import javax.persistence.*;
@Entity
@Table(name="LIBVOLUNTEER")
public class Volunteer {
@Id
@GeneratedValue
private int oid;
@Basic
private int hours_per_week;
@OneToOne(optional = false)
private Borrower borrower;
protected Volunteer() {
// used only by OpenJPA
}
public Volunteer(Borrower borrower) {
if (borrower == null)
throw new IllegalArgumentException("borrower cannot be null");
if (borrower.getVolunteer() != null)
throw new IllegalArgumentException(
"borrower is already a volunteer");
this.borrower = borrower;
borrower.setVolunteer(this);
}
public Borrower getBorrower() {
return borrower;
}
public int getHoursPerWeek() {
return hours_per_week;
}
public void setHoursPerWeek(int hours) {
if (hours >= 0)
hours_per_week = hours;
else
throw new IllegalArgumentException("hours must be >= 0");
}
public String toString() {
return "volunteer [" + oid + "] \"" + borrower.getName() + "\"";
}
public int hashCode() {
return oid;
}
/**
* Uses the object's persistent identity value to determine equivalence.
*/
public boolean equals(Object other) {
// standard fare
if (other == this)
return true;
// if the oid is 0, then this object is not persistent.
// in that case, it cannot be considered equivalent to
// other managed or unmanaged objects
if (oid == 0)
return false;
if (other instanceof Volunteer) {
Volunteer ov = (Volunteer) other;
return oid == ov.oid;
}
return false;
}
}