edu.asu.msse.gnayak2.main.CollectionSkeleton.java Source code

Introduction

Here is the source code for edu.asu.msse.gnayak2.main.CollectionSkeleton.java

Source

package edu.asu.msse.gnayak2.main;

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

import edu.asu.msse.gnayak2.impl.MovieImpl;
import edu.asu.msse.gnayak2.impl.MovieLibraryImpl;
import edu.asu.msse.gnayak2.rpc.Movie;

/**
 * Copyright (c) 2016 Tim Lindquist,
 *
 * 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.
 * <p/>
 * Purpose: This class is part of an example developed for the mobile
 * computing class at ASU Poly. The application provides a jsonrpc student service.
 *
 * @author Tim Lindquist
 * @version 12/18/2016
 **/

public class CollectionSkeleton extends Object {

    MovieLibraryImpl mLib;

    public CollectionSkeleton(MovieLibraryImpl mLib) {
        this.mLib = mLib;
    }

    public String callMethod(String request) {
        JSONObject result = new JSONObject();
        try {
            JSONObject theCall = new JSONObject(request);
            System.out.println(request);
            String method = theCall.getString("method");
            int id = theCall.getInt("id");
            JSONArray params = null;
            if (!theCall.isNull("params")) {
                params = theCall.getJSONArray("params");
                System.out.println(params);
            }
            result.put("id", id);
            result.put("jsonrpc", "2.0");
            if (method.equals("resetFromJsonFile")) {
                mLib.resetFromJsonFile();
                result.put("result", true);
                System.out.println("resetFromJsonCalled");
            } else if (method.equals("remove")) {
                String sName = params.getString(0);
                boolean removed = mLib.remove(sName);
                System.out.println(sName + " deleted");
                result.put("result", removed);
            } else if (method.equals("add")) {
                MovieImpl movie = new MovieImpl(params.getString(0));
                boolean added = mLib.add(movie);
                result.put("result", added);
            } else if (method.equals("get")) {
                String sName = params.getString(0);
                MovieImpl movie = mLib.get(sName);
                result.put("result", movie.toJson());
            } else if (method.equals("getNames")) {
                String[] names = mLib.getNames();
                JSONArray resArr = new JSONArray();
                for (int i = 0; i < names.length; i++) {
                    resArr.put(names[i]);
                }
                result.put("result", resArr);
            } else if (method.equals("saveToJsonFile")) {
                boolean saved = mLib.saveToJsonFile();
                result.put("result", saved);
            } else if (method.equals("getModelInformation")) {
                //mLib.resetFromJsonFile();
                result.put("result", mLib.getModelInformation());
            } else if (method.equals("update")) {
                String movieJSONString = params.getString(0);
                Movie mo = new MovieImpl(movieJSONString);
                mLib.updateMovie(mo);
            } else if (method.equals("deleteAndAdd")) {
                String oldMovieJSONString = params.getString(0);
                String editedMovieJSONString = params.getString(1);
                boolean deletionSuccessful = false;
                boolean additionSuccessful = false;
                MovieImpl oldMovie = new MovieImpl(oldMovieJSONString);
                MovieImpl newMovie = new MovieImpl(editedMovieJSONString);
                deletionSuccessful = mLib.deleteMovie(oldMovie);
                additionSuccessful = mLib.add(newMovie);
                result.put("result", deletionSuccessful & additionSuccessful);
            }
        } catch (Exception ex) {
            System.out.println("exception in callMethod: " + ex.getMessage());
        }
        System.out.println("returning: " + result.toString());
        return "HTTP/1.0 200 Data follows\nServer:localhost:8080\nContent-Type:text/plain\nContent-Length:"
                + (result.toString()).length() + "\n\n" + result.toString();
    }
}