/*
* 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.samples.flow.java;
import org.apache.cocoon.components.flow.java.AbstractContinuable;
import org.apache.cocoon.components.flow.java.Continuable;
import org.apache.cocoon.components.flow.java.VarMap;
import org.apache.cocoon.forms.binding.BindingException;
import org.apache.cocoon.forms.flow.java.FormInstance;
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;
import org.apache.ojb.broker.query.Criteria;
import org.apache.ojb.broker.query.QueryByCriteria;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.Iterator;
/**
* @version $Id: PersistenceFlow.java 155366 2005-02-25 19:54:12Z vgritsenko $
*/
public class PersistenceFlow extends AbstractContinuable {
private transient PersistenceBroker broker;
public PersistenceFlow() {
this.broker = PersistenceBrokerFactory.defaultPersistenceBroker();
}
public void doInsertEmployee() throws BindingException {
// Create a empty Bean
Employee employee = new Employee();
// Fill some initial data to the bean
employee.setId(1);
// Load form descriptor
FormInstance form = new FormInstance("forms/employee.xml");
// Load form binding
form.createBinding("forms/employee-binding.xml");
// Load the Bean to the form
form.load(employee);
// Let Cocoon Forms handle the form
form.show("form/employee");
// Update the Bean based on user input
form.save(employee);
// Update Bean in Database
broker.store(employee);
// Send response to the user
doShowEmployee();
}
public void doUpdateEmployee() throws BindingException {
// Get id as parameter
int id = 1;
if (getRequest().getParameter("id")!=null)
id = Integer.parseInt(getRequest().getParameter("id"));
else
throw new IllegalStateException("No parameter 'id'");
// Create a empty Bean
Employee employee = new Employee();
// Fill some initial data to the bean
employee.setId(id);
// Load bean based on the given PrimaryKey
employee = (Employee) broker.getObjectByIdentity(new Identity(employee, broker));
// Load form descriptor
FormInstance form = new FormInstance("forms/employee.xml");
// Load form binding
form.createBinding("forms/employee-binding.xml");
// Load the Bean to the form
form.load(employee);
// Let Cocoon Forms handle the form
form.show("form/employee");
// Update the Bean based on user input
form.save(employee);
// Update Bean in Database
broker.store(employee);
// Send response to the user
doShowEmployee();
}
public void doRemoveEmployee() {
// Get id as parameter
int id = 1;
if (getRequest().getParameter("id")!=null)
id = Integer.parseInt(getRequest().getParameter("id"));
else
throw new IllegalStateException("No parameter 'id'");
// Create a empty Bean
Employee employee = new Employee();
// Fill some initial data to the bean
employee.setId(id);
// Load bean based on the given PrimaryKey
employee = (Employee) broker.getObjectByIdentity(new Identity(employee, broker));
// Remove bean
broker.delete(employee);
// Send response to the user
doShowEmployee();
}
public void doShowEmployee() {
// Query all objects
ArrayList results = new ArrayList();
QueryByCriteria query = new QueryByCriteria(Employee.class, new Criteria());
for(Iterator i=broker.getCollectionByQuery(query).iterator(); i.hasNext();) {
results.add(i.next());
}
// Sort result
Collections.sort(results, new EmployeeComparator());
// Send response to the user
sendPage("page/employee-result", new VarMap().add("employee", results));
}
public static class EmployeeComparator implements Comparator, Continuable {
public int compare(Object o1, Object o2) {
return ((Employee)o1).getId()-((Employee)o2).getId();
}
public boolean equals(Object obj) {
return true;
}
}
}