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// Copyright 2008, Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// 3. Neither the name of Google Inc. nor the names of its contributors may be
// used to endorse or promote products derived from this software without
// specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
// EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// This program demonstrates use of the KML DOM Java SWIG bindings
// for walking the feature hierarchy of a KML file. KML DOM API
// aspects shown here include: parsing, element type inspection, arrays,
// getting attributes and simple elements. Also shown is the
// kmlengine::GetRootFeature function.
import com.googlecode.libkml.Container;
import com.googlecode.libkml.Coordinates;
import com.googlecode.libkml.Element;
import com.googlecode.libkml.Feature;
import com.googlecode.libkml.Kml;
import com.googlecode.libkml.KmlDomType;
import com.googlecode.libkml.KmlFactory;
import com.googlecode.libkml.Placemark;
import com.googlecode.libkml.Point;
import com.googlecode.libkml.kmldom;
import com.googlecode.libkml.kmlengine;
public class WalkFeatures {
static {
try {
System.loadLibrary("kmldom_swig_java");
System.loadLibrary("kmlengine_swig_java");
} catch (UnsatisfiedLinkError e) {
System.err.println("Failed to load kmldom or kmlengine. " + e);
System.err.println("Make sure you have your classpath set correctly " +
"and that LD_LIBRARY_PATH can see " +
"libkmldom_swig_java and friends");
System.exit(1);
}
}
public static void Indent(int depth) {
while (depth-- > 0) {
System.out.print(" ");
}
}
public static void VisitFeature(Feature feature, int depth) {
Indent(depth);
if (feature.has_id()) {
System.out.print("id= ");
System.out.print(feature.get_id());
System.out.print(" ");
}
if (feature.has_name()) {
System.out.print("name= ");
System.out.print(feature.get_name());
System.out.print(" ");
}
System.out.println(feature.Type());
if (feature.IsA(KmlDomType.Type_Container)) {
WalkContainer(kmldom.AsContainer(feature), depth+1);
}
}
public static void WalkContainer(Container container, int depth) {
for (int i = 0; i < container.get_feature_array_size(); ++i) {
VisitFeature(container.get_feature_array_at(i), depth);
}
}
public static void main(String[] args) {
Element root = kmldom.ParseKml(
"<kml>" +
"<Folder><name>folder</name>" +
"<Document id=\"d\">" +
"<Placemark id=\"p\"/>" +
"<NetworkLink id=\"n\"/>" +
"<PhotoOverlay>" +
"<name>photooverlay</name>" +
"</PhotoOverlay>" +
"</Document>" +
"<GroundOverlay id=\"g\"/>" +
"<ScreenOverlay id=\"s\"/>" +
"</Folder>" +
"</kml>");
Feature feature = kmlengine.GetRootFeature(root);
if (feature != null) {
VisitFeature(feature, 0);
}
}
}
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