ca.ualberta.cs.c301f12t01.serverStorage.TaskServerRetrieval.java Source code

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Here is the source code for ca.ualberta.cs.c301f12t01.serverStorage.TaskServerRetrieval.java

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/**
 * Copyright 2012 Neil Borle, Mitchell Home, Bronte Lee, Aaron
 * Padlesky, Eddie Santos
 *
 * 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 ca.ualberta.cs.c301f12t01.serverStorage;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.UUID;

import org.apache.http.message.BasicNameValuePair;

import com.google.gson.Gson;

import ca.ualberta.cs.c301f12t01.common.Task;

/**
 * 
 * @author home
 * 
 */
public class TaskServerRetrieval {

    /**
     * 
     * @return Returns all simple server objects on server
     */
    public static TaskServerObj[] getAllSO() {
        // first make the call to the server
        List<BasicNameValuePair> nvp = new ArrayList<BasicNameValuePair>();
        nvp.add(new BasicNameValuePair("action", "list"));
        Server server = new Server();
        String jsonString = server.post(nvp);
        // Now convert to an array of server objects
        Gson gson = new Gson();
        TaskServerObj[] allSO = gson.fromJson(jsonString, TaskServerObj[].class);
        return allSO;
    }

    /**
     * 
     * @return all tasks on the server
     */
    public static ArrayList<Task> getAllTasks() {
        TaskServerObj[] allSO = getAllSO();
        ArrayList<Task> tasks = new ArrayList<Task>();
        // iterate through and grab task
        for (TaskServerObj so : allSO) {
            if (so.getSummary().equals("task")) {
                Task t = getContentFromServer(so.getId());
                tasks.add(t);
            }
        }
        return tasks;
    }

    /**
     * 
     * @param userid
     *            User id that tasks need to match
     * @return HashMap of tasks matching userid
     */
    public static HashMap<UUID, Task> getUserTasks(UUID userid) {
        ArrayList<Task> al = getAllTasks();
        HashMap<UUID, Task> own = new HashMap<UUID, Task>();
        for (Task t : al) {
            if (t.getUser().equals(userid)) {
                own.put(t.getId(), t);
            }
        }
        return own;
    }

    /**
     * 
     * @return HashMap of all global tasks
     */
    public static HashMap<UUID, Task> getGlobalTasks() {
        ArrayList<Task> al = getAllTasks();
        HashMap<UUID, Task> own = new HashMap<UUID, Task>();
        for (Task t : al) {
            if (t.isGlobal()) {
                own.put(t.getId(), t);
            }
        }
        return own;
    }

    /**
     * @return HashMap of all local tasks
     */
    public static HashMap<UUID, Task> getLocalTasks() {
        ArrayList<Task> al = getAllTasks();
        HashMap<UUID, Task> own = new HashMap<UUID, Task>();
        for (Task t : al) {
            if (t.isLocal()) {
                own.put(t.getId(), t);
            }
        }
        return own;
    }

    /**
     * Method works to get reports and tasks
     * 
     * @param id
     *            Server ID of the content we want to get
     * @return content from server
     */
    public static Task getContentFromServer(String id) {
        // create our nvp
        List<BasicNameValuePair> nvp = new ArrayList<BasicNameValuePair>();
        nvp.add(new BasicNameValuePair("action", "get"));
        nvp.add(new BasicNameValuePair("id", id));
        // post
        Server server = new Server();
        String jsonString = server.post(nvp);
        // convert to SO
        Gson gson = new Gson();
        TaskServerObj so = gson.fromJson(jsonString, TaskServerObj.class);
        return so.getContent();
    }

    public static TaskServerObj getTaskSO(UUID id) {
        // first get all tasks
        TaskServerObj[] allSO = getAllSO();
        for (TaskServerObj so : allSO) {
            so.getContentFromServer(); // must call this everytime
            if (so.getSummary().equals("task")) {
                if (so.getContent().getId().equals(id)) {
                    return so;
                }
            }
        }
        System.out.println("Could not find Server Object");
        return null; // null if we can't find it
    }
}