Android Open Source - arcgis-runtime-samples-android Mil2525c Message Parser

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License

The source code is released under:
Apache License
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Java Source Code

package com.arcgis.android.samples.milsym2525c;
/*from w  ww. ja  v a  2 s .c o m*/
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;

import android.util.Log;
import android.util.Xml;

public class Mil2525cMessageParser {

  // no namespace
  private static final String ns = null;

  public List<GeoMessage> parse(InputStream in)
      throws XmlPullParserException, IOException {
    try {
      // instantiate a parser, use an InputStream as input
      XmlPullParser parser = Xml.newPullParser();
      parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, false);
      parser.setInput(in, null);
      // start the parsing process
      parser.nextTag();
      // invoke readFeed() method to extract and process data
      return readGeoMessages(parser);
    } finally {
      in.close();
    }
  }

  /**
   * 
   * @param parser
   * @return List containing the entries extracted from feed
   * @throws XmlPullParserException
   * @throws IOException
   */
  private List<GeoMessage> readGeoMessages(XmlPullParser parser)
      throws XmlPullParserException, IOException {

    List<GeoMessage> geoMessages = new ArrayList<GeoMessage>();

    parser.require(XmlPullParser.START_TAG, ns, "geomessages");
    while (parser.next() != XmlPullParser.END_TAG) {
      String pName = parser.getName();
      // Start looking for the geomessage tag
      if (pName != null && pName.equals("geomessage")) {
        geoMessages.add(readGeoMessage(parser));
      } else {
        Log.d("DEBUG", "TAG NAME = " + pName);
        continue;
      }

    }
    return geoMessages;
  }

  // Parses the contents of an geomessage.
  private GeoMessage readGeoMessage(XmlPullParser parser)
      throws XmlPullParserException, IOException {

    parser.require(XmlPullParser.START_TAG, ns, "geomessage");

    String name = null;
    String type = null;
    String action = null;
    String id = null;
    String controlpoints = null;
    String wkid = null;
    String sic = null;
    String uniquedesignation = null;

    while (parser.next() != XmlPullParser.END_TAG) {
      if (parser.getEventType() != XmlPullParser.START_TAG) {
        continue;
      }

      String pName = parser.getName();
      if (pName.equals("_name")) {
        name = readName(parser);
      } else if (pName.equals("_type")) {
        type = readType(parser);
      } else if (pName.equals("_action")) {
        action = readAction(parser);
      } else if (pName.equals("_id")) {
        id = readID(parser);
      } else if (pName.equals("_control_points")) {
        controlpoints = readControlPoints(parser);
      } else if (pName.equals("_wkid")) {
        wkid = readWkid(parser);
      } else if (pName.equals("sic")) {
        sic = readSic(parser);
      } else if (pName.equals("uniquedesignation")) {
        uniquedesignation = readUniqueDesignation(parser);
      }

    }
    return new GeoMessage(name, type, action, id, controlpoints, wkid, sic,
        uniquedesignation);
  }

  private String readUniqueDesignation(XmlPullParser parser)
      throws IOException, XmlPullParserException {
    parser.require(XmlPullParser.START_TAG, ns, "uniquedesignation");
    String uniquedesignation = readText(parser);
    parser.require(XmlPullParser.END_TAG, ns, "uniquedesignation");

    return uniquedesignation;
  }

  private String readSic(XmlPullParser parser) throws IOException,
      XmlPullParserException {
    parser.require(XmlPullParser.START_TAG, ns, "sic");
    String sic = readText(parser);
    parser.require(XmlPullParser.END_TAG, ns, "sic");

    return sic;
  }

  private String readWkid(XmlPullParser parser) throws IOException,
      XmlPullParserException {
    parser.require(XmlPullParser.START_TAG, ns, "_wkid");
    String wkid = readText(parser);
    parser.require(XmlPullParser.END_TAG, ns, "_wkid");

    return wkid;
  }

  private String readControlPoints(XmlPullParser parser) throws IOException,
      XmlPullParserException {
    parser.require(XmlPullParser.START_TAG, ns, "_control_points");
    String controlpoints = readText(parser);
    parser.require(XmlPullParser.END_TAG, ns, "_control_points");

    return controlpoints;
  }

  private String readID(XmlPullParser parser) throws IOException,
      XmlPullParserException {
    parser.require(XmlPullParser.START_TAG, ns, "_id");
    String id = readText(parser);
    parser.require(XmlPullParser.END_TAG, ns, "_id");

    return id;
  }

  private String readAction(XmlPullParser parser) throws IOException,
      XmlPullParserException {
    parser.require(XmlPullParser.START_TAG, ns, "_action");
    String action = readText(parser);
    parser.require(XmlPullParser.END_TAG, ns, "_action");

    return action;
  }

  private String readType(XmlPullParser parser) throws IOException,
      XmlPullParserException {
    parser.require(XmlPullParser.START_TAG, ns, "_type");
    String type = readText(parser);
    parser.require(XmlPullParser.END_TAG, ns, "_type");

    return type;
  }

  private String readName(XmlPullParser parser) throws IOException,
      XmlPullParserException {
    parser.require(XmlPullParser.START_TAG, ns, "_name");
    String name = readText(parser);
    parser.require(XmlPullParser.END_TAG, ns, "_name");

    return name;
  }

  // extract text values.
  private String readText(XmlPullParser parser) throws IOException,
      XmlPullParserException {
    String result = "";
    if (parser.next() == XmlPullParser.TEXT) {
      result = parser.getText();
      parser.nextTag();
    }
    return result;
  }

  public class GeoMessage {

    public final String name;
    public final String type;
    public final String action;
    public final String id;
    public final String controlpoints;
    public final String wkid;
    public final String sic;
    public final String uniquedesignation;

    private GeoMessage(String name, String type, String action, String id,
        String controlpoints, String wkid, String sic,
        String uniquedesignation) {
      this.name = name;
      this.type = type;
      this.action = action;
      this.id = id;
      this.controlpoints = controlpoints;
      this.wkid = wkid;
      this.sic = sic;
      this.uniquedesignation = uniquedesignation;
    }
  }

}
Java Source Code List
