/*
* 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.click.examples.page.cayenne;
import java.util.List;
import javax.annotation.Resource;
import org.apache.cayenne.DataObject;
import org.apache.cayenne.query.SelectQuery;
import org.apache.click.Context;
import org.apache.click.control.Column;
import org.apache.click.control.Decorator;
import org.apache.click.control.TextField;
import org.apache.click.examples.domain.Student;
import org.apache.click.examples.domain.StudentHouse;
import org.apache.click.examples.service.StudentService;
import org.apache.click.extras.cayenne.PropertySelect;
import org.springframework.stereotype.Component;
/**
* This example demonstrates how to represent a one-to-many relationship
* between StudentHouse and Students using Apache Click.
*
* A Student House can have many Students, and a Student can only live
* in one Student House.
*
* The relationship is managed by a Select control.
*/
@Component
public class AccommodationDemo extends FormTablePage {
private static final long serialVersionUID = 1L;
@Resource(name="studentService")
private StudentService studentService;
private PropertySelect select;
// Event Handlers ---------------------------------------------------------
/**
* @see FormTablePage#onInit()
*/
@Override
public void onInit() {
form.add(new TextField("name")).setRequired(true);
select = new PropertySelect("studentHouse");
// Populate the Select control with Student Houses where "id" is the
// option value and "name" is the option label
select.setSelectQuery(new SelectQuery(StudentHouse.class));
select.setOptionLabel("name");
select.setOptional(true);
form.add(select);
// Table
table.addColumn(new Column("id"));
table.addColumn(new Column("name"));
table.addColumn(new Column("studentHouse")).setDecorator(new Decorator() {
public String render(Object object, Context context) {
Student student = (Student) object;
if (student.getStudentHouse() != null) {
return student.getStudentHouse().getName();
} else {
return "";
}
}
});
super.onInit();
}
// Public Methods --------------------------------------------------------
/**
* @see FormTablePage#getDataObject(Object)
*/
@Override
public DataObject getDataObject(Object id) {
return studentService.getStudent(id);
}
/**
* @see FormTablePage#getDataObjectClass()
*/
@Override
public Class getDataObjectClass() {
return Student.class;
}
/**
* @see FormTablePage#getRowList()
*/
@Override
public List<Student> getRowList() {
return studentService.getStudentsByHouse();
}
}