gov/nasa/worldwind/wms/CapabilitiesV130.java

   1 /*
   2 Copyright (C) 2001, 2006 United States Government
   3 as represented by the Administrator of the
   4 National Aeronautics and Space Administration.
   5 All Rights Reserved.
   6 */
   7 package gov.nasa.worldwind.wms;
   8
   9 import org.w3c.dom.*;
  10
  11 import javax.xml.xpath.XPath;
  12 import java.util.ArrayList;
  13
  14 /**
  15  * Version-dependent class for gathering information from a wms capabilities document.
  16  *
  17  * @author Tom Gaskins
  18  * @version $Id: CapabilitiesV130.java 2471 2007-07-31 21:50:57Z tgaskins $
  19  */
  20
  21 public class CapabilitiesV130 extends Capabilities
  22 {
  23     public CapabilitiesV130(Document doc, XPath xpath)
  24     {
  25         super(doc, xpath);
  26     }
  27
  28     @Override
  29     public BoundingBox getLayerGeographicBoundingBox(Element layer)
  30     {
  31         Element e = this.getElement(layer, "ancestor-or-self::wms:Layer/wms:EX_GeographicBoundingBox");
  32
  33         return e == null ? null : BoundingBox.createFromStrings("CRS:84",
  34             this.getWestBoundLongitude(e), this.getEastBoundLongitude(e),
  35             this.getSouthBoundLatitude(e), this.getNorthBoundLatitude(e),
  36             null, null);
  37     }
  38
  39     public BoundingBox[] getLayerBoundingBoxes(Element layer)
  40     {
  41         Element[] es = this.getElements(layer, "ancestor-or-self::wms:Layer/wms:BoundingBox");
  42         if (es == null)
  43             return null;
  44
  45         ArrayList<BoundingBox> bboxes = new ArrayList<BoundingBox>();
  46         ArrayList<String> crses = new ArrayList<String>();
  47
  48         for (Element e : es)
  49         {
  50             if (e == null)
  51                 continue;
  52
  53             BoundingBox bb = BoundingBox.createFromStrings(this.getBoundingBoxCRS(e),
  54                 this.getBoundingBoxMinx(e), this.getBoundingBoxMaxx(e),
  55                 this.getBoundingBoxMiny(e), this.getBoundingBoxMaxy(e),
  56                 this.getBoundingBoxResx(e), this.getBoundingBoxResy(e));
  57
  58             if (bb != null)
  59             {
  60                 // Add the bbox only if the ancestor's crs is not one of those in the node's crs.
  61                 if (bb.getCrs() != null && !crses.contains(bb.getCrs()))
  62                 {
  63                     crses.add(bb.getCrs());
  64                     bboxes.add(bb);
  65                 }
  66             }
  67         }
  68
  69         return bboxes.size() > 0 ? bboxes.toArray(new BoundingBox[bboxes.size()]) : null;
  70     }
  71
  72     @Override
  73     public String getLayerMaxScaleDenominator(Element layer)
  74     {
  75         return this.getText(layer, "ancestor-or-self::wms:Layer/wms:MaxScaleDenominator");
  76     }
  77
  78     @Override
  79     public String getLayerMinScaleDenominator(Element layer)
  80     {
  81         return this.getText(layer, "ancestor-or-self::wms:Layer/wms:MinScaleDenominator");
  82     }
  83 }