| /* |
| * Copyright 2009-2010 by The Regents of the University of California |
| * 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 from |
| * |
| * 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 edu.uci.ics.hyracks.control.cc.web.handlers.util; |
| |
| import java.io.IOException; |
| |
| import javax.servlet.ServletException; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| |
| import org.eclipse.jetty.server.Request; |
| import org.eclipse.jetty.server.handler.AbstractHandler; |
| import org.json.JSONObject; |
| |
| public class JSONOutputRequestHandler extends AbstractHandler { |
| private final IJSONOutputFunction fn; |
| |
| public JSONOutputRequestHandler(IJSONOutputFunction fn) { |
| this.fn = fn; |
| } |
| |
| @Override |
| public void handle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response) |
| throws IOException, ServletException { |
| while (target.startsWith("/")) { |
| target = target.substring(1); |
| } |
| while (target.endsWith("/")) { |
| target = target.substring(0, target.length() - 1); |
| } |
| String[] parts = target.split("/"); |
| try { |
| JSONObject result = fn.invoke(parts); |
| response.setContentType("application/json"); |
| result.write(response.getWriter()); |
| baseRequest.setHandled(true); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } |
| } |
| } |