de.incoherent.suseconferenceclient.tasks.GetConferencesTask.java Source code

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Here is the source code for de.incoherent.suseconferenceclient.tasks.GetConferencesTask.java

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/*******************************************************************************
 * Copyright (c) 2012 Matt Barringer <matt@incoherent.de>.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Public License v2.0
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * 
 * Contributors:
 *     Matt Barringer <matt@incoherent.de> - initial API and implementation
 ******************************************************************************/

package de.incoherent.suseconferenceclient.tasks;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.SocketException;
import java.util.ArrayList;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import de.incoherent.suseconferenceclient.SUSEConferences;
import de.incoherent.suseconferenceclient.app.Database;
import de.incoherent.suseconferenceclient.app.HTTPWrapper;
import de.incoherent.suseconferenceclient.models.Conference;

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

public class GetConferencesTask extends AsyncTask<Void, Void, ArrayList<Conference>> {
    public interface ConferenceListListener {
        public void conferencesDownloaded(ArrayList<Conference> conferences);
    }

    private ConferenceListListener mListener;
    private String mUrl;
    private Database mDb;

    public GetConferencesTask(String url, ConferenceListListener listener) {
        this.mListener = listener;
        this.mUrl = url + "/conferences.json";
        this.mDb = SUSEConferences.getDatabase();
        Log.d("SUSE Conferences", "Wrapper.get mUrl: " + mUrl);
    }

    @Override
    protected ArrayList<Conference> doInBackground(Void... params) {
        JSONObject reply = null;
        ArrayList<Conference> ret = new ArrayList<Conference>();

        try {
            reply = HTTPWrapper.get(mUrl);
            JSONArray conferences = reply.getJSONArray("conferences");

            int len = conferences.length();
            for (int i = 0; i < len; i++) {
                JSONObject jsonCon = conferences.getJSONObject(i);
                Conference newCon = new Conference();
                newCon.setGuid(jsonCon.getString("guid"));
                newCon.setName(jsonCon.getString("name"));
                newCon.setDescription(jsonCon.getString("description"));
                newCon.setYear(jsonCon.getInt("year"));
                newCon.setName(jsonCon.getString("name"));
                newCon.setDateRange(jsonCon.getString("date_range"));
                newCon.setUrl(jsonCon.getString("url"));
                newCon.setSocialTag(jsonCon.getString("socialtag"));
                newCon.setIsCached(false);
                long sqlId = mDb.getConferenceIdFromGuid(newCon.getGuid());
                if (sqlId == -1) {
                    sqlId = mDb.addConference(newCon);
                    if (jsonCon.has("revision"))
                        mDb.setLastUpdateValue(sqlId, jsonCon.getInt("revision"));
                }
                newCon.setSqlId(sqlId);

                ret.add(newCon);
            }
        } catch (IllegalStateException e) {
            e.printStackTrace();
        } catch (SocketException e) {
            e.printStackTrace();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (JSONException e) {
            e.printStackTrace();
        }
        try {
            Thread.sleep(13000);
        } catch (Exception e) {
        }
        ;

        return ret;
    }

    protected void onPostExecute(ArrayList<Conference> conferences) {
        mListener.conferencesDownloaded(conferences);
    }
}