RSSWrapper.java :  » App » bandapp » com » bandapp » rss » Android Open Source

package com.bandapp.rss;

import java.io.IOException;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

import org.w3c.dom.Document;
import org.xml.sax.SAXException;

/*
 * This is a wrapper class around a DOM document that holds the RSSItems
 * So that we can easily get information in the DOM using this class
 * We now use TwitterRssItems, later on that can be abstracted to RSSItems
 */
public abstract class RSSWrapper<T> {

  private ArrayList<T> items;
  private URL urlFeed;
  private Document document;
  
  public RSSWrapper(URL urlFeed){
    items = new ArrayList<T>();
    this.urlFeed = urlFeed;
    makeDocument();
  }
  
  protected abstract void makeFeed();
  
  private void makeDocument(){
    
    URLConnection urlconn;
    
    try {
      /*
       * we make the connection and a document is build , through parsing the xml stream
       */
      urlconn = urlFeed.openConnection();
      DocumentBuilderFactory factory = DocumentBuilderFactory
          .newInstance();
      DocumentBuilder builder = factory.newDocumentBuilder();
      document = builder.parse(urlconn.getInputStream());
      makeFeed();

    } catch (IOException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    } catch (ParserConfigurationException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    } catch (SAXException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }
  }
  
  protected Document getDocument(){
    return this.document;
  }
  
  public ArrayList<T> getItems(){
    return this.items;
  }
  
  
}