ClubSkeleton.java Source code

Introduction

Here is the source code for ClubSkeleton.java

Source

import java.net.*;
import java.io.*;
import java.util.*;
import org.json.JSONObject;
import org.json.JSONArray;
import java.text.NumberFormat;

/**
 * Copyright 2015 Aneesh Shastry
 *
 *  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.
 *
 * Purpose: This is a Student Club App to enable Clubs to share information with its members.
 *          This is the server code to implement the backend logic 
 *
 * @author : Aneesh Shastry  mailto:ashastry@asu.edu
 *           MS Computer Science, CIDSE, IAFSE, Arizona State University
 * @version : May 1, 2015
 */
public class ClubSkeleton extends Object {

    ClubImpl ci;

    public ClubSkeleton() {
        super();
        ci = new ClubImpl();
    }

    public String callMethod(String request) {
        JSONObject result = new JSONObject();
        NumberFormat nf = NumberFormat.getInstance();
        nf.setMaximumFractionDigits(2);
        try {
            JSONObject theCall = new JSONObject(request);
            String method = theCall.getString("method");
            int id = theCall.getInt("id");
            JSONArray params = null;
            if (!theCall.isNull("params")) {
                params = theCall.getJSONArray("params");
            }
            result.put("id", id);
            result.put("jsonrpc", "2.0");
            double left = 0;
            double right = 0;
            if (params.length() > 0) {
                left = params.getDouble(0);
            }
            if (params.length() > 1) {
                right = params.getDouble(1);
            }
            if (method.equals("getAboutUs")) {
                //code to return the About Us page
                System.out.println("request: " + nf.format(left) + " + " + nf.format(right));
                String res = ci.getAboutUs();
                result.put("result", res);
            } else if (method.equals("getEvents")) {
                //code to return the About Us page
                System.out.println("request: " + nf.format(left) + " + " + nf.format(right));
                String res = ci.getEvents();
                result.put("result", res);
            } else if (method.equals("getNews")) {
                //code to return the About Us page
                System.out.println("request: " + nf.format(left) + " + " + nf.format(right));
                String res = ci.getNews();
                result.put("result", res);
            } else if (method.equals("getFAQ")) {
                //code to return the About Us page
                System.out.println("request: " + nf.format(left) + " + " + nf.format(right));
                String res = ci.getFAQ();
                result.put("result", res);
            } else if (method.equals("whoAreYou")) {
                System.out.println("request: whoAreYou");
                result.put("result", ci.whoAreYou());
            }
        } catch (Exception ex) {
            System.out.println("exception in callMethod: " + ex.getMessage());
        }
        return "HTTP/1.0 200 Data follows\nServer:localhost:8080\nContent-Type:text/plain\nContent-Length:"
                + (result.toString()).length() + "\n\n" + result.toString();
    }
}