/*
* 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.wookie.controller;
import java.io.IOException;
import java.util.ArrayList;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.wookie.beans.IWidget;
import org.apache.wookie.beans.IWidgetDefault;
import org.apache.wookie.beans.IWidgetService;
import org.apache.wookie.beans.util.IPersistenceManager;
import org.apache.wookie.beans.util.PersistenceManagerFactory;
import org.apache.wookie.exceptions.ResourceNotFoundException;
import org.apache.wookie.helpers.WidgetHelper;
/**
* <p>Controller for widget resources.</p>
*
* <p>Supports the following methods:</p>
*
* <ul>
* <li>GET widgets - index </li>
* <li>GET widgets/{id} - show widget</li>
* <li>GET widgets/{category} - index widgets for category</li>
* </ul>
* @author scott
*
*/
public class WidgetsController extends Controller{
private static final long serialVersionUID = 8759704878105474902L;
@Override
protected void doDelete(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
resp.sendError(HttpServletResponse.SC_METHOD_NOT_ALLOWED);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
resp.sendError(HttpServletResponse.SC_METHOD_NOT_ALLOWED);
}
@Override
protected void doPut(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
resp.sendError(HttpServletResponse.SC_METHOD_NOT_ALLOWED);
}
// Implementation
/* (non-Javadoc)
* @see org.apache.wookie.controller.Controller#show(java.lang.String, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
*/
protected void show(String resourceId, HttpServletRequest request,
HttpServletResponse response) throws ResourceNotFoundException, IOException {
// support "all" queries
if ((resourceId == null) || resourceId.equals("")){
index(resourceId, request, response);
return;
}
// attempt to get specific widget by id
IPersistenceManager persistenceManager = PersistenceManagerFactory.getPersistenceManager();
IWidget widget = persistenceManager.findById(IWidget.class, resourceId);
// support queries by type
if (widget == null) {
IWidgetService[] services = persistenceManager.findByValue(IWidgetService.class, "serviceName", resourceId);
if (services != null && services.length == 1) {
IWidget[] widgets = persistenceManager.findWidgetsByType(resourceId);
returnXml(WidgetHelper.createXMLWidgetsDocument(widgets, getLocalPath(request), getLocales(request)),response);
return;
}
}
// return widget result
if (widget == null) throw new ResourceNotFoundException();
returnXml(WidgetHelper.createXMLWidgetsDocument(widget, getLocalPath(request), getLocales(request)),response);
}
/* (non-Javadoc)
* @see org.apache.wookie.controller.Controller#index(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
*/
@Override
protected void index(HttpServletRequest request,
HttpServletResponse response) throws IOException {
index("", request, response);
}
/**
* Returns a list of widgets
* @param resourceId
* @param request
* @param response
* @throws ServletException
* @throws IOException
*/
private void index(String resourceId, HttpServletRequest request,
HttpServletResponse response) throws IOException {
IWidget widget = null;
IWidget[] widgets;
// If the request has the parameter ?all, return all widgets.
// If the request contains a String resource identifier
// such as "/chat", return all matching widgets
IPersistenceManager persistenceManager = PersistenceManagerFactory.getPersistenceManager();
if (request.getParameter("all") != null
|| (resourceId != null && !resourceId.equals(""))) {
if (resourceId != null && !resourceId.equals("")) {
widgets = persistenceManager.findWidgetsByType(resourceId);
} else {
widgets = persistenceManager.findAll(IWidget.class);
}
// Otherwise, return default widgets for the defined services. In
// future we may want
// to move this into the Services controller.
} else {
ArrayList<IWidget> widgetsarr = new ArrayList<IWidget>();
for (IWidgetDefault widgetDefault : persistenceManager.findAll(IWidgetDefault.class)) {
widget = widgetDefault.getWidget();
if (!widget.getGuid().equals("http://notsupported")) {
widgetsarr.add(widget);
}
}
widgets = (IWidget[])widgetsarr.toArray(new IWidget[widgetsarr.size()]);
}
returnXml(WidgetHelper.createXMLWidgetsDocument(widgets, getLocalPath(request), getLocales(request)),response);
}
}