/*
* This is part of Geomajas, a GIS framework, http://www.geomajas.org/.
*
* Copyright 2008-2011 Geosparc nv, http://www.geosparc.com/, Belgium.
*
* The program is available in open source according to the GNU Affero
* General Public License. All contributions in this program are covered
* by the Geomajas Contributors License Agreement. For full licensing
* details, see LICENSE.txt in the project root.
*/
package org.geomajas.internal.layer.vector;
import java.util.ArrayList;
import java.util.List;
import org.geomajas.configuration.FeatureStyleInfo;
import org.geomajas.configuration.NamedStyleInfo;
import org.geomajas.global.ExceptionCode;
import org.geomajas.global.GeomajasException;
import org.geomajas.internal.rendering.StyleFilterImpl;
import org.geomajas.layer.VectorLayer;
import org.geomajas.layer.VectorLayerService;
import org.geomajas.layer.pipeline.GetFeaturesContainer;
import org.geomajas.rendering.StyleFilter;
import org.geomajas.service.pipeline.PipelineCode;
import org.geomajas.service.pipeline.PipelineContext;
import org.geomajas.service.pipeline.PipelineStep;
/**
* Prepare the style filters for the {@link org.geomajas.layer.VectorLayerService} getFeatures.
*
* @author Joachim Van der Auwera
*/
public class GetFeaturesStyleStep implements PipelineStep<GetFeaturesContainer> {
public static final String STYLE_FILTERS_KEY = "styleFilters";
private String id;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public void execute(PipelineContext context, GetFeaturesContainer response) throws GeomajasException {
VectorLayer layer = context.get(PipelineCode.LAYER_KEY, VectorLayer.class);
int featureIncludes = context.get(PipelineCode.FEATURE_INCLUDES_KEY, Integer.class);
NamedStyleInfo style = context.getOptional(PipelineCode.STYLE_KEY, NamedStyleInfo.class);
List<StyleFilter> styleFilters = null;
if (style == null) {
// no style specified, take the first
style = layer.getLayerInfo().getNamedStyleInfos().get(0);
} else if (style.getFeatureStyles().isEmpty()) {
// only name specified, find it
style = layer.getLayerInfo().getNamedStyleInfo(style.getName());
}
context.put(PipelineCode.STYLE_KEY, style);
if ((featureIncludes & VectorLayerService.FEATURE_INCLUDE_STYLE) != 0) {
if (style == null) {
throw new GeomajasException(ExceptionCode.RENDER_FEATURE_MODEL_PROBLEM, "Style not found");
}
styleFilters = initStyleFilters(style.getFeatureStyles());
}
context.put(STYLE_FILTERS_KEY, styleFilters);
}
/**
* Build list of style filters from style definitions.
*
* @param styleDefinitions
* list of style definitions
* @return list of style filters
*/
private List<StyleFilter> initStyleFilters(List<FeatureStyleInfo> styleDefinitions) {
List<StyleFilter> styleFilters = new ArrayList<StyleFilter>();
if (styleDefinitions == null || styleDefinitions.size() == 0) {
styleFilters.add(new StyleFilterImpl()); // use default.
} else {
for (FeatureStyleInfo styleDef : styleDefinitions) {
styleFilters.add(new StyleFilterImpl(styleDef));
}
}
return styleFilters;
}
}