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.cocoon.acting;
18:
19: import org.apache.avalon.framework.parameters.Parameters;
20: import org.apache.avalon.framework.thread.ThreadSafe;
21: import org.apache.cocoon.environment.Redirector;
22: import org.apache.cocoon.environment.SourceResolver;
23: import org.apache.excalibur.store.Store;
24:
25: import java.util.Map;
26:
27: /**
28: * Simple action which ensures the persistent store is cleared.
29: *
30: * @author <a href="mailto:g-froehlich@gmx.de">Gerhard Froehlich</a>
31: * @version CVS $Id: ClearPersistentStoreAction.java 433543 2006-08-22 06:22:54Z crossley $
32: */
33: public class ClearPersistentStoreAction extends ServiceableAction
34: implements ThreadSafe {
35:
36: public Map act(Redirector redirector, SourceResolver resolver,
37: Map objectModel, String src, Parameters par)
38: throws Exception {
39: if (this .manager.hasService(Store.PERSISTENT_STORE)) {
40: final Store store_persistent = (Store) this .manager
41: .lookup(Store.ROLE);
42:
43: try {
44: store_persistent.clear();
45: return EMPTY_MAP;
46: } catch (Exception ex) {
47: getLogger().debug(
48: "Exception while trying to Clearing the Store",
49: ex);
50: return null;
51: } finally {
52: this .manager.release(store_persistent);
53: }
54: } else {
55: getLogger()
56: .info(
57: "Unable to clear persistent store as no persistent store is configured.");
58: return null;
59: }
60: }
61: }
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