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Java > Open Source Codes > org > apache > catalina > storeconfig > InstanceListenerSF


1 /*
2  * Copyright 1999-2001,2004 The Apache Software Foundation.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16
17 package org.apache.catalina.storeconfig;
18
19 import java.io.PrintWriter JavaDoc;
20
21 import org.apache.catalina.core.StandardContext;
22 import org.apache.commons.logging.Log;
23 import org.apache.commons.logging.LogFactory;
24
25 /**
26  * Store Context InstanceListener
27  *
28  * @author Peter Rossbach
29  *
30  */
31 public class InstanceListenerSF extends StoreFactoryBase {
32     private static Log log = LogFactory.getLog(InstanceListenerSF.class);
33
34     /*
35      * Store nested Element Value Arrays
36      *
37      * @see org.apache.catalina.config.IStoreFactory#store(java.io.PrintWriter,
38      * int, java.lang.Object)
39      */
40     public void store(PrintWriter JavaDoc aWriter, int indent, Object JavaDoc aElement)
41             throws Exception JavaDoc {
42         if (aElement instanceof StandardContext) {
43             StoreDescription elementDesc = getRegistry().findDescription(
44                     aElement.getClass().getName() + ".[InstanceListener]");
45             String JavaDoc[] listeners = ((StandardContext) aElement)
46                     .findInstanceListeners();
47             if (elementDesc != null) {
48                 if (log.isDebugEnabled())
49                     log.debug("store " + elementDesc.getTag() + "( " + aElement
50                             + " )");
51                 getStoreAppender().printTagArray(aWriter, "InstanceListener",
52                         indent, listeners);
53             }
54         } else {
55             if (log.isWarnEnabled())
56                 log.warn("Descriptor for element" + aElement.getClass()
57                         + ".[InstanceListener] not configured!");
58         }
59     }
60 }
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