Android Open Source - beaconbrowser Beacon Sync Task

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License

The source code is released under:

MIT License

Java Source Code

package org.waded.beaconbrowser;
/*from   w ww.j  a  v a  2s  . com*/
import android.os.AsyncTask;
import android.util.Log;

import com.sun.syndication.feed.synd.SyndEntry;
import com.sun.syndication.feed.synd.SyndFeed;
import com.sun.syndication.io.FeedException;
import com.sun.syndication.io.SyndFeedInput;
import com.sun.syndication.io.XmlReader;

import org.jdom.Element;

import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.InputMismatchException;
import java.util.List;
import java.util.regex.Pattern;

public class BeaconSyncTask extends AsyncTask<String, Integer, List<Entry>>
{
  private static final String TAG = BeaconSyncTask.class.getName();

  // Spec is 2 byte integers, but close enough to catch mistakes
  Pattern validMajorMinor = Pattern.compile("\\d{1,3}\\.\\d{1,3}");

  /**
   * Returns filtered Atom entries (we don't need it all) plus beaconsync extensions
   */
  protected List<Entry> doInBackground(String... urls)
  {
    List<Entry> entries = new ArrayList<>();

    // TODO: handling of expected exceptions & entries w/ missing/invalid beaconsync extensions
    try
    {
      URL feedUrl = new URL(urls[0]);
      SyndFeedInput input = new SyndFeedInput();
      SyndFeed feed = input.build(new XmlReader(feedUrl));
      for (Object object : feed.getEntries())
      {
        SyndEntry syndEntry = (SyndEntry)object;

        BeaconSyncEntryExtension beacon = new BeaconSyncEntryExtension();
        List<Object> foreignMarkups = (List<Object>)syndEntry.getForeignMarkup();
        for (Object foreignMarkup : foreignMarkups)
        {
          if (foreignMarkup instanceof Element)
          {
            Element element = (Element)foreignMarkup;
            if (element.getNamespace().getURI().equals("urn:beaconsync:1"))
            {
              if (element.getName().equals("uuid"))
              {
                beacon.uuid = element.getValue();
              }
              else if (element.getName().equals("majorminor"))
              {
                String majorMinor = element.getValue();
                if (validMajorMinor.matcher(majorMinor).matches())
                {
                  String[] parts = majorMinor.split("\\.");
                  beacon.major = Integer.parseInt(parts[0]);
                  beacon.minor = Integer.parseInt(parts[1]);
                }
                else
                {
                  Log.w(TAG, syndEntry.getUri() + " had unexpected majorminor '" + majorMinor + "'");
                }
              }
            }
          }
        }

        entries.add(new Entry(syndEntry.getUri(), syndEntry.getLink(), beacon));
      }
    }
    catch (MalformedURLException e)
    {
      Log.w(TAG, e.getLocalizedMessage());
    }
    catch (FeedException e)
    {
      Log.w(TAG, e.getLocalizedMessage());
    }
    catch (IOException e)
    {
      Log.w(TAG, e.getLocalizedMessage());
    }

    return entries;
  }

}

Java Source Code List

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