/**
 * Clones the given (Point)Symbolizer.
 *
 * @param symbolizer symbolizer to clone
 * @return cloned Symbolizer
 */
private Symbolizer cloneSymbolizer(Symbolizer symbolizer) {
    DuplicatingStyleVisitor duplicator = new DuplicatingStyleVisitor();
    symbolizer.accept(duplicator);

    return (Symbolizer) duplicator.getCopy();
}
 

private void applyOpacity() {
    final MapLayer layer = mapContext.getLayer(0);
    if (layer != null) {
        Style style = layer.getStyle();
        DuplicatingStyleVisitor copyStyle = new ApplyingStyleVisitor();
        style.accept(copyStyle);
        layer.setStyle((Style) copyStyle.getCopy());
    }
}
 

@Test
public void testFindSymbolizer() {
    StyledLayerDescriptor sld = DefaultSymbols.createNewSLD();
    NamedLayer namedLayer = DefaultSymbols.createNewNamedLayer();
    sld.layers().add(DefaultSymbols.createNewNamedLayer());
    sld.layers().add(namedLayer);
    String expectedNamedLayer = "namedLayer";
    namedLayer.setName(expectedNamedLayer);
    Style style = DefaultSymbols.createNewStyle();
    String expectedStyleLayer = "style";
    style.setName(expectedStyleLayer);
    namedLayer.addStyle(DefaultSymbols.createNewStyle());
    namedLayer.addStyle(style);
    FeatureTypeStyle fts = DefaultSymbols.createNewFeatureTypeStyle();
    String expectedFeatureTypeStyleLayer = "feature type style";
    fts.setName(expectedFeatureTypeStyleLayer);
    style.featureTypeStyles().add(DefaultSymbols.createNewFeatureTypeStyle());
    style.featureTypeStyles().add(fts);
    Rule rule = DefaultSymbols.createNewRule();
    fts.rules().add(DefaultSymbols.createNewRule());
    fts.rules().add(rule);
    String expectedRule = "rule";
    rule.setName(expectedRule);
    String expectedSymbolizer = "text symbolizer";
    TextSymbolizer symbolizer = DefaultSymbols.createDefaultTextSymbolizer();
    symbolizer.setName(expectedSymbolizer);
    rule.symbolizers().add(DefaultSymbols.createDefaultPolygonSymbolizer());
    rule.symbolizers().add(symbolizer);
    StyleFactoryImpl styleFactory = (StyleFactoryImpl) CommonFactoryFinder.getStyleFactory();
    FilterFactory ff = CommonFactoryFinder.getFilterFactory();
    Font font =
            styleFactory.createFont(
                    ff.literal("abc"),
                    ff.literal("normal"),
                    ff.literal("normal"),
                    ff.literal(10));
    symbolizer.setFont(font);

    DuplicatingStyleVisitor duplicate = new DuplicatingStyleVisitor();
    duplicate.visit(sld);
    StyledLayerDescriptor sldCopy = (StyledLayerDescriptor) duplicate.getCopy();

    Symbolizer actualSymbolizer = SLDUtils.findSymbolizer(sld, symbolizer, sldCopy);

    assertNotNull(actualSymbolizer);
    assertEquals(
            symbolizer.getLabel().toString(),
            ((TextSymbolizer) actualSymbolizer).getLabel().toString());

    actualSymbolizer = SLDUtils.findSymbolizer(sld, null, sldCopy);
    assertNull(actualSymbolizer);

    actualSymbolizer = SLDUtils.findSymbolizer(sld, symbolizer, null);
    assertNull(actualSymbolizer);
}
 

@Test
public void testFindRule() {
    StyledLayerDescriptor sld = DefaultSymbols.createNewSLD();
    NamedLayer namedLayer = DefaultSymbols.createNewNamedLayer();
    sld.layers().add(DefaultSymbols.createNewNamedLayer());
    sld.layers().add(namedLayer);
    String expectedNamedLayer = "namedLayer";
    namedLayer.setName(expectedNamedLayer);
    Style style = DefaultSymbols.createNewStyle();
    String expectedStyleLayer = "style";
    style.setName(expectedStyleLayer);
    namedLayer.addStyle(DefaultSymbols.createNewStyle());
    namedLayer.addStyle(style);
    FeatureTypeStyle fts = DefaultSymbols.createNewFeatureTypeStyle();
    String expectedFeatureTypeStyleLayer = "feature type style";
    fts.setName(expectedFeatureTypeStyleLayer);
    style.featureTypeStyles().add(DefaultSymbols.createNewFeatureTypeStyle());
    style.featureTypeStyles().add(fts);
    Rule rule = DefaultSymbols.createNewRule();
    fts.rules().add(DefaultSymbols.createNewRule());
    fts.rules().add(rule);
    String expectedRule = "rule";
    rule.setName(expectedRule);
    String expectedSymbolizer = "text symbolizer";
    TextSymbolizer symbolizer = DefaultSymbols.createDefaultTextSymbolizer();
    symbolizer.setName(expectedSymbolizer);
    rule.symbolizers().add(DefaultSymbols.createDefaultPolygonSymbolizer());
    rule.symbolizers().add(symbolizer);
    StyleFactoryImpl styleFactory = (StyleFactoryImpl) CommonFactoryFinder.getStyleFactory();
    FilterFactory ff = CommonFactoryFinder.getFilterFactory();
    Font font =
            styleFactory.createFont(
                    ff.literal("abc"),
                    ff.literal("normal"),
                    ff.literal("normal"),
                    ff.literal(10));
    symbolizer.setFont(font);

    DuplicatingStyleVisitor duplicate = new DuplicatingStyleVisitor();
    duplicate.visit(sld);
    StyledLayerDescriptor sldCopy = (StyledLayerDescriptor) duplicate.getCopy();

    Rule actualRule = SLDUtils.findRule(sld, rule, sldCopy);

    assertNotNull(actualRule);
    assertEquals(rule.getName(), actualRule.getName());

    actualRule = SLDUtils.findRule(sld, null, sldCopy);
    assertNull(actualRule);

    actualRule = SLDUtils.findRule(sld, rule, null);
    assertNull(actualRule);
}
 

@Override
public Layer beforeLayer(final WMSMapContent mapContent, final Layer layer) {
  // sanity check the style
  if ((layer instanceof FeatureLayer)
      && (layer.getStyle() != null)
      && (layer.getStyle().featureTypeStyles() != null)
      && !layer.getStyle().featureTypeStyles().isEmpty()) {

    final Style layerStyle = layer.getStyle();
    final FeatureTypeStyle style = layerStyle.featureTypeStyles().get(0);
    // check if their is a DistributedRender rendering
    // transformation
    if ((style instanceof ProcessFunction)
        && (style.getTransformation() != null)
        && (((ProcessFunction) style.getTransformation()).getName() != null)
        && ((ProcessFunction) style.getTransformation()).getName().equals(
            DistributedRenderProcess.PROCESS_NAME)) {
      // if their is a DistributedRender transformation, we need
      // to provide more information that can only be found
      final DuplicatingStyleVisitor cloner = new DuplicatingStyleVisitor();
      layerStyle.accept(cloner);
      layer.getQuery().getHints().put(
          DistributedRenderProcess.OPTIONS,
          new DistributedRenderOptions(wms, mapContent, layerStyle));
      // now that the options with the distributed render style
      // have been set the original style will be used with
      // distributed rendering

      // now, replace the style with a direct raster symbolizer,
      // so the GridCoverage result of the distributed rendering
      // process is directly rendered to the map in place of the
      // original style

      final Style directRasterStyle = (Style) cloner.getCopy();
      directRasterStyle.featureTypeStyles().clear();
      Processors.addProcessFactory(new InternalProcessFactory());
      directRasterStyle.featureTypeStyles().add(
          getDirectRasterStyle(
              layer.getFeatureSource().getSchema().getGeometryDescriptor().getLocalName(),
              DistributedRenderProcessUtils.getRenderingProcess()));
      ((FeatureLayer) layer).setStyle(directRasterStyle);
    }
  }
  return layer;
}