001 /**
002 * GRANITE DATA SERVICES
003 * Copyright (C) 2006-2013 GRANITE DATA SERVICES S.A.S.
004 *
005 * This file is part of the Granite Data Services Platform.
006 *
007 * Granite Data Services is free software; you can redistribute it and/or
008 * modify it under the terms of the GNU Lesser General Public
009 * License as published by the Free Software Foundation; either
010 * version 2.1 of the License, or (at your option) any later version.
011 *
012 * Granite Data Services is distributed in the hope that it will be useful,
013 * but WITHOUT ANY WARRANTY; without even the implied warranty of
014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
015 * General Public License for more details.
016 *
017 * You should have received a copy of the GNU Lesser General Public
018 * License along with this library; if not, write to the Free Software
019 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
020 * USA, or see <http://www.gnu.org/licenses/>.
021 */
022 package org.granite.tide.spring;
023
024 import java.util.concurrent.Callable;
025
026 import org.aopalliance.intercept.MethodInterceptor;
027 import org.aopalliance.intercept.MethodInvocation;
028 import org.granite.gravity.Gravity;
029 import org.granite.tide.data.DataEnabled;
030 import org.granite.tide.data.DataUpdatePostprocessor;
031 import org.springframework.beans.factory.InitializingBean;
032 import org.springframework.beans.factory.annotation.Autowired;
033
034 /**
035 * Spring AOP interceptor to handle publishing of data changes instead of relying on the default behaviour
036 * This can be used outside of a HTTP Granite context and inside the security/transaction context
037 *
038 * Ensure that the order of the interceptor is correctly setup to use ON_COMMIT publish mode: this interceptor must be executed inside a transaction
039 *
040 * @author William DRAI
041 */
042 public class TideDataPublishingInterceptor implements MethodInterceptor, InitializingBean {
043
044 //private static final Logger log = Logger.getLogger(TideDataPublishingInterceptor.class);
045
046 private Gravity gravity;
047 private DataUpdatePostprocessor dataUpdatePostprocessor;
048
049 private TideDataPublishingWrapper tideDataPublishingWrapper = null;
050
051
052 public void setGravity(Gravity gravity) {
053 this.gravity = gravity;
054 }
055
056 public void setTideDataPublishingWrapper(TideDataPublishingWrapper tideDataPublishingWrapper) {
057 this.tideDataPublishingWrapper = tideDataPublishingWrapper;
058 }
059
060 @Autowired(required=false)
061 public void setDataUpdatePostprocessor(DataUpdatePostprocessor dataUpdatePostprocessor) {
062 this.dataUpdatePostprocessor = dataUpdatePostprocessor;
063 }
064
065 @Override
066 public void afterPropertiesSet() throws Exception {
067 if (tideDataPublishingWrapper == null)
068 tideDataPublishingWrapper = new TideDataPublishingWrapper(gravity, dataUpdatePostprocessor);
069 }
070
071 public Object invoke(final MethodInvocation invocation) throws Throwable {
072 DataEnabled dataEnabled = invocation.getThis().getClass().getAnnotation(DataEnabled.class);
073 if (dataEnabled == null || !dataEnabled.useInterceptor())
074 return invocation.proceed();
075
076 return tideDataPublishingWrapper.execute(dataEnabled, new Callable<Object>() {
077 @Override
078 public Object call() throws Exception {
079 try {
080 return invocation.proceed();
081 }
082 catch (Exception e) {
083 throw e;
084 }
085 catch (Throwable t) {
086 // Not sure what to do in case of a throwable
087 throw new RuntimeException("Data publishing error", t);
088 }
089 }
090 });
091 }
092 }