コード例 #1
0
ファイル: WMS.java プロジェクト: roarbra/geoserver
  /**
   * Returns the list of elevation values for the specified typeInfo based on the dimension
   * representation: all values for {@link DimensionPresentation#LIST}, otherwise min and max
   *
   * @param typeInfo
   * @return
   * @throws IOException
   */
  public TreeSet<Double> getFeatureTypeElevations(FeatureTypeInfo typeInfo) throws IOException {
    // grab the time metadata
    DimensionInfo elevation =
        typeInfo.getMetadata().get(ResourceInfo.ELEVATION, DimensionInfo.class);
    if (elevation == null || !elevation.isEnabled()) {
      throw new ServiceException(
          "Layer " + typeInfo.getPrefixedName() + " does not have elevation support enabled");
    }

    FeatureCollection collection = getDimensionCollection(typeInfo, elevation);

    TreeSet<Double> result = new TreeSet<Double>();
    if (elevation.getPresentation() == DimensionPresentation.LIST
        || (elevation.getPresentation() == DimensionPresentation.DISCRETE_INTERVAL
            && elevation.getResolution() == null)) {
      final UniqueVisitor visitor = new UniqueVisitor(elevation.getAttribute());
      collection.accepts(visitor, null);

      @SuppressWarnings("unchecked")
      Set<Object> values = visitor.getUnique();
      if (values.size() <= 0) {
        result = null;
      } else {
        for (Object value : values) {
          result.add(((Number) value).doubleValue());
        }
      }
    } else {
      final MinVisitor min = new MinVisitor(elevation.getAttribute());
      collection.accepts(min, null);
      // check calcresult first to avoid potential IllegalStateException if no features are in
      // collection
      CalcResult calcResult = min.getResult();
      if (calcResult != CalcResult.NULL_RESULT) {
        result.add(((Number) min.getMin()).doubleValue());
        final MaxVisitor max = new MaxVisitor(elevation.getAttribute());
        collection.accepts(max, null);
        result.add(((Number) max.getMax()).doubleValue());
      }
    }

    return result;
  }
コード例 #2
0
ファイル: WMS.java プロジェクト: roarbra/geoserver
  /**
   * Returns the list of time values for the specified typeInfo based on the dimension
   * representation: all values for {@link DimensionPresentation#LIST}, otherwise min and max
   *
   * @param typeInfo
   * @return
   * @throws IOException
   */
  public TreeSet<Date> getFeatureTypeTimes(FeatureTypeInfo typeInfo) throws IOException {
    // grab the time metadata
    DimensionInfo time = typeInfo.getMetadata().get(ResourceInfo.TIME, DimensionInfo.class);
    if (time == null || !time.isEnabled()) {
      throw new ServiceException(
          "Layer " + typeInfo.getPrefixedName() + " does not have time support enabled");
    }

    FeatureCollection collection = getDimensionCollection(typeInfo, time);

    TreeSet<Date> result = new TreeSet<Date>();
    if (time.getPresentation() == DimensionPresentation.LIST) {
      final UniqueVisitor visitor = new UniqueVisitor(time.getAttribute());
      collection.accepts(visitor, null);

      @SuppressWarnings("unchecked")
      Set<Date> values = visitor.getUnique();
      if (values.size() <= 0) {
        result = null;
      } else {
        // we might get null values out of the visitor, strip them
        values.remove(null);
        result.addAll(values);
      }
    } else {
      final MinVisitor min = new MinVisitor(time.getAttribute());
      collection.accepts(min, null);
      CalcResult minResult = min.getResult();
      // check calcresult first to avoid potential IllegalStateException if no features are in
      // collection
      if (minResult != CalcResult.NULL_RESULT) {
        result.add((Date) min.getMin());
        final MaxVisitor max = new MaxVisitor(time.getAttribute());
        collection.accepts(max, null);
        result.add((Date) max.getMax());
      }
    }

    return result;
  }