/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* Licensed 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.cocoon.ojb.samples;
import javax.jdo.PersistenceManager;
import javax.jdo.Transaction;
import org.apache.cocoon.ojb.jdo.components.JdoPMF;
import org.apache.cocoon.ojb.samples.bean.Employee;
import org.apache.ojb.broker.Identity;
import org.apache.ojb.broker.PersistenceBroker;
import org.apache.ojb.broker.PersistenceBrokerFactory;
/**
* Employee's Impl
*
* @author <a href="mailto:antonio@apache.org">Antonio Gallardo</a>
* @version CVS $Id: EmployeeDAO.java,v 1.3 2004/03/05 13:02:02 bdelacretaz Exp $
*/
public class EmployeeDAO {
public EmployeeDAO(){}
public void retrieve(Employee bean, JdoPMF pmf) {
/* 1. Get the PersistenceManager */
PersistenceManager persistenceManager = pmf.getPersistenceManager();
Employee e = new Employee();
e.setId(bean.getId());
PersistenceBroker broker = PersistenceBrokerFactory.defaultPersistenceBroker();
Identity oid = new Identity(e, broker);
Employee b = new Employee();
// 2. start transaction
persistenceManager.currentTransaction().begin();
// 3. Get the Object based on the primary key
b = (Employee) persistenceManager.getObjectById(oid, false);
// 4. Copy data to bean
copyData(b, bean);
// 5. End transaction
persistenceManager.currentTransaction().commit();
}
public void insert(Employee e, JdoPMF pmf) {
/* 1. Get the PersistenceManager */
PersistenceManager persistenceManager = pmf.getPersistenceManager();
// 2. Get current transaction
Transaction tx = persistenceManager.currentTransaction();
// 3. Start a Transaction
tx.begin();
// 4. now perform persistence operations. Store the Employee
persistenceManager.makePersistent(e);
// 5. Commit the transaction
tx.commit();
}
public void update(Employee bean, JdoPMF pmf) {
/* 1. Get the PersistenceManager */
PersistenceManager persistenceManager = pmf.getPersistenceManager();
Employee e = new Employee();
e.setId(bean.getId());
PersistenceBroker broker = PersistenceBrokerFactory.defaultPersistenceBroker();
Identity oid = new Identity(e, broker);
Employee b = new Employee();
// 2. start transaction
persistenceManager.currentTransaction().begin();
// 3. Get the Object based on the primary key
b = (Employee) persistenceManager.getObjectById(oid, false);
// 4. Copy data from bean
copyData(bean, b);
// Store to database
// persistenceManager.makePersistent(b);
// 5. End transaction
persistenceManager.currentTransaction().commit();
}
public void remove(Employee bean, JdoPMF pmf) {
/* 1. Get the PersistenceManager */
PersistenceManager persistenceManager = pmf.getPersistenceManager();
Employee e = new Employee();
e.setId(bean.getId());
PersistenceBroker broker = PersistenceBrokerFactory.defaultPersistenceBroker();
Identity oid = new Identity(e, broker);
Employee b = new Employee();
// 2. start transaction
persistenceManager.currentTransaction().begin();
// 3. Get the Object based on the primary key
b = (Employee) persistenceManager.getObjectById(oid, false);
// Delete in the database
persistenceManager.deletePersistent(b);
// 5. End transaction
persistenceManager.currentTransaction().commit();
}
private void copyData(Employee from, Employee to) {
to.setId(from.getId());
to.setDepartmentId(from.getDepartmentId());
to.setName(from.getName());
}
}