01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17: package org.apache.jetspeed.util.interceptors;
18:
19: import org.aopalliance.intercept.MethodInterceptor;
20: import org.aopalliance.intercept.MethodInvocation;
21: import org.apache.jetspeed.page.impl.DatabasePageManagerCache;
22:
23: /**
24: * Aspect that will attempt to rollback cache entries upon Page Manager failures
25: *
26: * @author <a href="mailto:david@bluesunrise.com">David Sean Taylor</a>
27: */
28: public class PageManagerInterceptor implements MethodInterceptor {
29:
30: /** Serialization version identifier */
31: private static final long serialVersionUID = -1316279974504594833L;
32:
33: /**
34: * Encloses <code>super.invoke()</code> in a try/catch block, where the
35: * catch block contains additional retry logic.
36: */
37: public Object invoke(MethodInvocation invocation) throws Throwable {
38: try {
39: return invocation.proceed();
40: } catch (Exception exp) {
41: DatabasePageManagerCache.rollbackTransactions();
42: throw exp;
43: }
44: }
45:
46: }
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