org.ounl.lifelonglearninghub.learntracker.gis.ou.db.ws.ActivityWSDeleteAsyncTask.java Source code

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Here is the source code for org.ounl.lifelonglearninghub.learntracker.gis.ou.db.ws.ActivityWSDeleteAsyncTask.java

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/*******************************************************************************
 * Copyright (C) 2014 Open University of The Netherlands
 * Author: Bernardo Tabuenca Archilla
 * LearnTracker project 
 * 
 * This library is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library.  If not, see <http://www.gnu.org/licenses/>.
 ******************************************************************************/
package org.ounl.lifelonglearninghub.learntracker.gis.ou.db.ws;

import java.io.InputStream;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpDelete;
import org.apache.http.impl.client.DefaultHttpClient;
import org.ounl.lifelonglearninghub.learntracker.gis.ou.session.Session;

import android.os.AsyncTask;
import android.util.Log;

public class ActivityWSDeleteAsyncTask extends AsyncTask<String, Integer, Integer> {

    private String CLASSNAME = this.getClass().getName();

    public int deleteActivities(long lCheckIn, String sUserId) {

        // e.g. query
        // https://lifelong-learning-hub.appspot.com/_ah/api/activityendpoint/v1/activity/checkin/{activity_date_checkin}/user/{user_id}
        // e.g. query
        // https://lifelong-learning-hub.appspot.com/_ah/api/activityendpoint/v1/activity/checkin/867232233232/user/Bernd

        InputStream is = null;
        String url = Session.getSingleInstance().getWSPath() + "/_ah/api/activityendpoint/v1/activity/checkin/"
                + lCheckIn + "/user/" + sUserId;

        try {
            Log.d(CLASSNAME, " Querying to backend deleteActivities check in:" + lCheckIn + " user:" + sUserId);
            HttpClient httpclient = new DefaultHttpClient();

            HttpDelete httpdelete = new HttpDelete(url);
            HttpResponse response = httpclient.execute(httpdelete);

            // HttpGet httpget = new HttpGet(url);
            // HttpResponse response = httpclient.execute(httpget);

            final int statusCode = response.getStatusLine().getStatusCode();
            if (statusCode != HttpStatus.SC_OK) {
                Log.w(getClass().getSimpleName(), "Error " + statusCode + " for URL " + url);
                return 0;
            }

            HttpEntity entity = response.getEntity();
            is = entity.getContent();
            Log.d(CLASSNAME, "deleteActivities returns [" + is.toString() + "]");

        } catch (Exception e) {
            Log.e(CLASSNAME, "Error in http connection " + e.toString());
        }

        // TODO this method should return the numer of items deleted in backend
        // Issue 15
        // https://code.google.com/p/lifelong-learning-hub/issues/detail?id=15

        return 1;
    }

    @Override
    protected void onPreExecute() {
        super.onPreExecute();

    }

    @Override
    protected Integer doInBackground(String... sParam) {

        Log.d(CLASSNAME, "Starting " + CLASSNAME + " task in background...");
        Integer oIDeleted = -1;
        String sUser = "";
        String sCheckIn = "";

        try {

            sCheckIn = sParam[0].toString();
            long lCheckIn = new Long(sCheckIn);
            sUser = sParam[1].toString();

            Log.d(CLASSNAME, "Check IN [" + lCheckIn + "]  User ID [" + sParam[1].toString() + "]");
            oIDeleted = deleteActivities(lCheckIn, sUser);

        } catch (Exception e) {
            e.printStackTrace();
        }

        return oIDeleted;
    }

    @Override
    protected void onPostExecute(Integer result) {
        super.onPostExecute(result);

    }

}