/*
* 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.service;
import com.vividsolutions.jts.geom.Envelope;
import org.geomajas.layer.VectorLayer;
import org.geomajas.plugin.caching.step.CacheContainer;
import org.geomajas.service.pipeline.PipelineCode;
import org.geomajas.service.pipeline.PipelineContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
/**
* {@link CachingSupportService} implementation.
*
* @author Joachim Van der Auwera
* @author Jan De Moerloose
*/
@Component
public class CachingSupportServiceImpl implements CachingSupportService {
private final Logger log = LoggerFactory.getLogger(CachingSupportServiceImpl.class);
@Autowired
private CacheManagerService cacheManager;
@Autowired
private CacheKeyService cacheKeyService;
/** {@inheritDoc} */
public <CONTAINER extends CacheContainer> CONTAINER getContainer(String keyKey, String contextKey,
String[] keys, CacheCategory category, PipelineContext pipelineContext,
CachingSupportServiceContextAdder contextAdder, Class<CONTAINER> containerClass) {
CONTAINER cc = null;
try {
VectorLayer layer = pipelineContext.getOptional(PipelineCode.LAYER_KEY, VectorLayer.class);
String cacheKey = null;
if (keyKey != null) {
cacheKey = pipelineContext.getOptional(keyKey, String.class);
}
if (cacheKey != null) {
cc = cacheManager.get(layer, category, cacheKey, containerClass);
}
if (null == cc) {
CacheContext cacheContext = cacheKeyService.getCacheContext(pipelineContext, keys);
if (null != contextAdder) {
contextAdder.addMoreContext(cacheContext); // add more data...
}
cacheKey = cacheKeyService.getCacheKey(cacheContext);
cc = cacheManager.get(layer, category, cacheKey, containerClass);
while (null != cc) {
if (!cacheContext.equals(cc.getContext())) {
cacheKey = cacheKeyService.makeUnique(cacheKey);
cc = cacheManager.get(layer, category, cacheKey, containerClass);
} else {
pipelineContext.put(keyKey, cacheKey);
pipelineContext.put(contextKey, cacheContext);
return cc;
}
}
}
} 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);
}
return cc;
}
/** {@inheritDoc} */
public void putContainer(PipelineContext pipelineContext, CachingSupportServiceContextAdder contextAdder,
CacheCategory category, String[] keys, String keyKey, String contextKey, CacheContainer cacheContainer,
Envelope envelope) {
try {
VectorLayer layer = pipelineContext.getOptional(PipelineCode.LAYER_KEY, VectorLayer.class);
CacheContext cacheContext = pipelineContext.getOptional(contextKey, CacheContext.class);
if (null == cacheContext) {
cacheContext = cacheKeyService.getCacheContext(pipelineContext, keys);
if (null != contextAdder) {
contextAdder.addMoreContext(cacheContext); // add more data...
}
}
cacheContainer.setContext(cacheContext);
String cacheKey = pipelineContext.getOptional(keyKey, String.class);
if (null == cacheKey) {
cacheKey = cacheKeyService.getCacheKey(cacheContext);
}
CacheContainer cc = cacheManager.get(layer, category, cacheKey, CacheContainer.class);
while (null != cc && !cacheContext.equals(cc.getContext())) {
cacheKey = cacheKeyService.makeUnique(cacheKey);
cc = cacheManager.get(layer, category, cacheKey, CacheContainer.class);
}
if (keyKey != null) {
pipelineContext.put(keyKey, cacheKey);
}
cacheManager.put(layer, category, cacheKey, cacheContainer, envelope);
pipelineContext.put(keyKey, cacheKey);
} 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);
}
}
}