StationlistXMLHandler.java

  1. /**
  2.  * This class is not currently in use, but kept for posterity and the ability
  3.  * to add this support back in if it is deemed necessary.
  4.  */
  5. package gov.usgs.earthquake.shakemap;

  7. import gov.usgs.util.StringUtils;
  8. import gov.usgs.util.XmlUtils;

  10. import java.math.BigDecimal;
  11. import java.util.Calendar;
  12. import java.util.Date;
  13. import java.util.TimeZone;

  15. import org.xml.sax.Attributes;
  16. import org.xml.sax.SAXException;
  17. import org.xml.sax.helpers.DefaultHandler;

  19. /**
  20.  * Parser for Shakemap "stationlist.xml" metadata.
  21.  */
  22. public class StationlistXMLHandler extends DefaultHandler {

  24.     /** Element for Shakemap data */
  25.     public static final String SHAKEMAPDATA_ELEMENT = "shakemap-data";
  26.     /** Shakemap data version */
  27.     public static final String SHAKEMAPDATA_VERSION = "map_version";

  29.     /** Element for earthquake */
  30.     public static final String EARTHQUAKE_ELEMENT = "earthquake";
  31.     /** String for earthquake id */
  32.     public static final String EARTHQUAKE_ID = "id";
  33.     /** String for earthquake latitiude */
  34.     public static final String EARTHQUAKE_LAT = "lat";
  35.     /** String for earthquake longitude */
  36.     public static final String EARTHQUAKE_LON = "lon";
  37.     /** String for earthquake magnitude */
  38.     public static final String EARTHQUAKE_MAG = "mag";
  39.     /** String for earthquake year */
  40.     public static final String EARTHQUAKE_YEAR = "year";
  41.     /** String for earthquake month */
  42.     public static final String EARTHQUAKE_MONTH = "month";
  43.     /** String for earthquake day */
  44.     public static final String EARTHQUAKE_DAY = "day";
  45.     /** String for earthquake hour */
  46.     public static final String EARTHQUAKE_HOUR = "hour";
  47.     /** String for earthquake minute */
  48.     public static final String EARTHQUAKE_MINUTE = "minute";
  49.     /** String for earthquake second */
  50.     public static final String EARTHQUAKE_SECOND = "second";
  51.     /** String for earthquake timezone */
  52.     public static final String EARTHQUAKE_TIMEZONE = "timezone";
  53.     /** String for earthquake depth */
  54.     public static final String EARTHQUAKE_DEPTH = "depth";
  55.     /** String for earthquake locstring */
  56.     public static final String EARTHQUAKE_LOCSTRING = "locstring";
  57.     /** String for earthquake created */
  58.     public static final String EARTHQUAKE_CREATED = "created";

  60.     /** The ShakeMap object parsed by this handler. */
  61.     private ShakeMap shakemap;

  63.     /**
  64.      * Constructor
  65.      * @param shakemap a shakemap object parsed by handler
  66.      */
  67.     public StationlistXMLHandler(ShakeMap shakemap) {
  68.         this.shakemap = shakemap;
  69.     }

  71.     /** @return shakemap */
  72.     public ShakeMap getShakemap() {
  73.         return shakemap;
  74.     }

  76.     /** @param shakemap to set */
  77.     public void setShakemap(ShakeMap shakemap) {
  78.         this.shakemap = shakemap;
  79.     }

  81.     /**
  82.      * Takes in an XML object and parses it
  83.      * @param in an object
  84.      * @return A shakemap
  85.      * @throws Exception if error occurs
  86.      */
  87.     public ShakeMap parse(final Object in) throws Exception {
  88.         XmlUtils.parse(in, this);
  89.         return getShakemap();
  90.     }

  92.     /**
  93.      * Parse element attributes.
  94.      *
  95.      * @param uri element namespace.
  96.      * @param localName element name.
  97.      * @param qName qualified element name.
  98.      * @param attributes element attributes.
  99.      * @throws SAXException if error occurs
  100.      */
  101.     public final void startElement(final String uri, final String localName,
  102.             final String qName, final Attributes attributes)
  103.             throws SAXException {

  105.         try {
  106.             if (localName.equals(SHAKEMAPDATA_ELEMENT)) {
  107.                 shakemap.setVersion(attributes
  108.                         .getValue(SHAKEMAPDATA_VERSION));
  109.             } else if (localName.equals(EARTHQUAKE_ELEMENT)) {
  110.                 shakemap.setLatitude(new BigDecimal(attributes
  111.                         .getValue(EARTHQUAKE_LAT)));
  112.                 shakemap.setLongitude(new BigDecimal(attributes
  113.                         .getValue(EARTHQUAKE_LON)));
  114.                 shakemap.setMagnitude(new BigDecimal(attributes
  115.                         .getValue(EARTHQUAKE_MAG)));
  116.                 shakemap.setDepth(new BigDecimal(attributes
  117.                         .getValue(EARTHQUAKE_DEPTH)));
  118.                 Calendar cal = Calendar.getInstance(TimeZone
  119.                         .getTimeZone(attributes.getValue(EARTHQUAKE_TIMEZONE)));
  120.                 cal.set(Integer.parseInt(attributes.getValue(EARTHQUAKE_YEAR)),
  121.                         Integer.parseInt(attributes.getValue(EARTHQUAKE_MONTH)),
  122.                         Integer.parseInt(attributes.getValue(EARTHQUAKE_DAY)),
  123.                         Integer.parseInt(attributes.getValue(EARTHQUAKE_HOUR)),
  124.                         Integer.parseInt(attributes.getValue(EARTHQUAKE_MINUTE)),
  125.                         Integer.parseInt(attributes.getValue(EARTHQUAKE_SECOND)));
  126.                 shakemap.setEventTime(cal.getTime());
  127.                 shakemap.setEventDescription(attributes
  128.                         .getValue(EARTHQUAKE_LOCSTRING));
  129.                 shakemap.setProcessTimestamp(new Date(StringUtils
  130.                         .getLong(attributes.getValue(EARTHQUAKE_CREATED))));
  131.             }
  132.         } catch (Exception e) {
  133.             throw new SAXException(e);
  134.         }
  135.     }

  137. }
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