/**
* Copyright 2006 Webmedia Group Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
**/
package org.araneaframework.framework.filter;
import java.util.HashMap;
import java.util.Map;
import org.apache.log4j.Logger;
import org.araneaframework.InputData;
import org.araneaframework.OutputData;
import org.araneaframework.Path;
import org.araneaframework.core.StandardEnvironment;
import org.araneaframework.framework.SynchronizingContext;
import org.araneaframework.framework.core.BaseFilterService;
/**
* The class guarantees a syncrhonized action method to the child service. A child can
* check from the environment for the key SynchronizingContext.class to detect if the
* StandardSynchronizingFilterService has been used as a filter and the action really is
* syncrhonized.
*
* @author "Toomas Römer" <toomas@webmedia.ee>
*/
public class StandardSynchronizingFilterService extends BaseFilterService {
private static final Logger log = Logger.getLogger(StandardSynchronizingFilterService.class);
protected void init() throws Exception {
Map entries = new HashMap();
entries.put(SynchronizingContext.class, new SynchronizingContext() {});
childService._getComponent().init(new StandardEnvironment(getChildEnvironment(), entries));
log.debug("Synchronizing filter service initialized.");
}
protected void destroy() throws Exception {
super.destroy();
log.debug("Synchronizing filter service destroyed.");
}
protected synchronized void action(Path path, InputData input, OutputData output) throws Exception {
childService._getService().action(path, input, output);
}
}