de.hoesel.dav.buv.twitter.internal.RahmenwerkService.java Source code

Introduction

Here is the source code for de.hoesel.dav.buv.twitter.internal.RahmenwerkService.java

Source

/*
 * Rahmenwerk-Twitter-Anbindung
 * Copyright (C) 2014 Christian Hsel 
 * 
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation; either version 2 of the License, or (at your option) any later
 * version.
 *
 * This program 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 General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 51
 * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

package de.hoesel.dav.buv.twitter.internal;

import java.io.IOException;
import java.util.Properties;

import org.eclipse.jface.preference.IPreferenceStore;

import twitter4j.Twitter;
import twitter4j.TwitterFactory;
import twitter4j.conf.Configuration;
import twitter4j.conf.ConfigurationBuilder;
import de.bsvrz.buv.rw.basislib.Rahmenwerk;
import de.bsvrz.buv.rw.bitctrl.CacheService;
import de.bsvrz.sys.funclib.bitctrl.modell.ObjektFactory;
import de.hoesel.dav.buv.twitter.Activator;
import de.hoesel.dav.buv.twitter.preferences.PreferenceConstants;

/**
 * 
 * @author Christian Hsel
 * 
 */
public class RahmenwerkService {

    private static RahmenwerkService service;

    private Rahmenwerk rahmenwerk;
    private ObjektFactory objektFactory;

    private Twitter twitter;

    private TwitterFactory twitterFactory;

    private String oAuthConsumerKey;

    private String oAuthConsumerSecret;

    private CacheService cacheService;

    protected void activate() {
        service = this;

    }

    protected void deactivate() {
        service = null;
        shutdownTwitter();
    }

    public static RahmenwerkService getService() {
        return service;
    }

    protected void bindRahmenwerk(final Rahmenwerk newRahmenwerk) {
        rahmenwerk = newRahmenwerk;
    }

    protected void unbindRahmenwerk(final Rahmenwerk oldRahmenwerk) {
        rahmenwerk = null;
    }

    public Rahmenwerk getRahmenwerk() {
        return rahmenwerk;
    }

    protected void bindObjektFactory(final ObjektFactory newObjektFactory) {
        objektFactory = newObjektFactory;
    }

    protected void unbindObjektFactory(final ObjektFactory oldObjektFactory) {
        objektFactory = null;
    }

    public ObjektFactory getObjektFactory() {
        return objektFactory;
    }

    public Twitter getTwitter() {
        if (twitter == null) {
            loadProperties();
            ConfigurationBuilder builder = new ConfigurationBuilder();
            builder.setOAuthConsumerKey(oAuthConsumerKey);
            builder.setOAuthConsumerSecret(oAuthConsumerSecret);

            IPreferenceStore preferenceStore = Activator.getDefault().getPreferenceStore();
            String accessToken = preferenceStore.getString(PreferenceConstants.OAUTH_ACCESS_TOKEN);
            String secretToken = preferenceStore.getString(PreferenceConstants.OAUTH_ACCESS_SECRET_TOKEN);
            if (!accessToken.isEmpty() && !secretToken.isEmpty()) {
                builder.setOAuthAccessToken(accessToken);
                builder.setOAuthAccessTokenSecret(secretToken);
            }
            Configuration configuration = builder.build();
            twitterFactory = new TwitterFactory(configuration);
            twitter = twitterFactory.getInstance();

        }
        return twitter;
    }

    /**
     * Laden des ComsumerKeys und des ConsumerSecrets aus einem Properities
     * File (twitter.properities).
     */
    private void loadProperties() {

        try {
            Properties prop = new Properties();
            // load a properties file from class path, inside static method
            prop.load(RahmenwerkService.class.getResourceAsStream("twitter.properties"));

            // get the property value and print it out
            oAuthConsumerKey = prop.getProperty("OAuthConsumerKey");
            oAuthConsumerSecret = prop.getProperty("OAuthConsumerSecret");
        } catch (IOException ex) {
            ex.printStackTrace();
        }

    }

    public void shutdownTwitter() {
        if (twitter != null) {
            twitter.shutdown();
            twitter = null;
        }
    }

    protected void bindCacheService(final CacheService newCacheService) {
        cacheService = newCacheService;
    }

    protected void unbindCacheService(final CacheService newCacheService) {
        cacheService = null;
    }

    public CacheService getCacheService() {
        return cacheService;
    }

}