/*
* 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.plugin.caching.step;
import com.vividsolutions.jts.geom.Envelope;
import com.vividsolutions.jts.geom.Geometry;
import org.geomajas.global.GeomajasException;
import org.geomajas.layer.VectorLayer;
import org.geomajas.layer.feature.FeatureModel;
import org.geomajas.layer.feature.InternalFeature;
import org.geomajas.plugin.caching.service.CacheManagerService;
import org.geomajas.service.TestRecorder;
import org.geomajas.service.pipeline.PipelineCode;
import org.geomajas.service.pipeline.PipelineContext;
import org.geomajas.service.pipeline.PipelineStep;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
/**
* Step to invalidate caches for features which need to be updated during SaveOrUpdate.
*
* @author Joachim Van der Auwera
*/
public class UpdateFeatureInvalidateStep implements PipelineStep {
private final Logger log = LoggerFactory.getLogger(UpdateFeatureInvalidateStep.class);
@Autowired
private CacheManagerService cacheManager;
@Autowired
private TestRecorder recorder;
private String id;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public void execute(PipelineContext context, Object result) throws GeomajasException {
try {
log.debug("UpdateFeatureInvalidateStep start");
VectorLayer layer = context.get(PipelineCode.LAYER_KEY, VectorLayer.class);
// invalidate the area of the old feature
InternalFeature oldFeature = context.getOptional(PipelineCode.OLD_FEATURE_KEY, InternalFeature.class);
if (null != oldFeature) {
// get original geometry from storage to assure not changed by transformation and available
Object feature = layer.read(oldFeature.getId());
context.put(PipelineCode.FEATURE_DATA_OBJECT_KEY, feature); // put in context to prevent getting twice
FeatureModel featureModel = layer.getFeatureModel();
Geometry oldGeometry = featureModel.getGeometry(feature);
if (null != oldGeometry) {
// invalidate
recorder.record("layer", "Invalidate geometry for old version of feature");
Envelope oldEnvelope = oldGeometry.getEnvelopeInternal();
log.debug("invalidate old feature area {}", oldEnvelope);
cacheManager.invalidate(layer, oldEnvelope);
}
}
// invalidate area for new feature
InternalFeature feature = context.get(PipelineCode.FEATURE_KEY, InternalFeature.class);
Geometry geometry = feature.getGeometry();
if (null != geometry) {
recorder.record("layer", "Invalidate geometry for new feature");
Envelope envelope = geometry.getEnvelopeInternal();
log.debug("invalidate new feature area {}", envelope);
cacheManager.invalidate(layer, envelope);
}
} catch (Throwable t) { //NOPMD
// have to prevent caching code from making the pipeline fail, log and discard errors
log.error("Error during caching step, only logged: " + t.getMessage(), t);
}
}
}