1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19
20 package org.apache.myfaces.orchestra.conversation.basic;
21
22 import org.apache.commons.logging.Log;
23 import org.apache.commons.logging.LogFactory;
24 import org.apache.myfaces.orchestra.conversation.ConversationMessager;
25
26 /**
27 * Handle user-specific notifications about conversation anomalies, when we are running
28 * in a plain servlet environment (no JSF etc).
29 * <p>
30 * Unfortunately there is no standard way of displaying a message to a user in such an
31 * environment (except possibly throwing an exception, forcing the standard error page
32 * to be shown). This implementation therefore just logs the message to the standard
33 * server application log.
34 * <p>
35 * If you do not like the default behaviour then implement your own version of this
36 * class and configure your alternative as the standard "Conversation Messager"
37 * instead. See the documentation on interface ConversationMessager for details.
38 * <p>
39 * As required by the ConversationMessager interface, all methods on this class are thread-safe.
40 */
41 public class LogConversationMessager extends ConversationMessager
42 {
43 private final Log log = LogFactory.getLog(LogConversationMessager.class);
44
45 public void setConversationException(Throwable t)
46 {
47 log.info("Conversation exception occurred", t);
48 }
49
50 public void setConversationNotActive(String name)
51 {
52 log.info("Conversation not active: " + name);
53 }
54 }