1 | package org.apache.velocity.runtime.log; |
2 | |
3 | /* |
4 | * Copyright 2001,2004 The Apache Software Foundation. |
5 | * |
6 | * Licensed under the Apache License, Version 2.0 (the "License"); |
7 | * you may not use this file except in compliance with the License. |
8 | * 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, software |
13 | * distributed under the License is distributed on an "AS IS" BASIS, |
14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
15 | * See the License for the specific language governing permissions and |
16 | * limitations under the License. |
17 | */ |
18 | |
19 | import java.util.Vector; |
20 | import java.util.Enumeration; |
21 | |
22 | import org.apache.velocity.runtime.RuntimeServices; |
23 | |
24 | /** |
25 | * Pre-init logger. I believe that this was suggested by |
26 | * Carsten Ziegeler <cziegeler@sundn.de> and |
27 | * Jeroen C. van Gelderen. If this isn't correct, let me |
28 | * know as this was a good idea... |
29 | * |
30 | * @author <a href="mailto:geirm@optonline.net">Geir Magnusson Jr.</a> |
31 | * @version $Id: PrimordialLogSystem.java,v 1.4.4.1 2004/03/03 23:22:56 geirm Exp $ |
32 | */ |
33 | public class PrimordialLogSystem implements LogSystem |
34 | { |
35 | private Vector pendingMessages = new Vector(); |
36 | private RuntimeServices rsvc = null; |
37 | |
38 | /** |
39 | * default CTOR. |
40 | */ |
41 | public PrimordialLogSystem() |
42 | { |
43 | } |
44 | |
45 | public void init( RuntimeServices rs ) |
46 | throws Exception |
47 | { |
48 | rsvc = rs; |
49 | } |
50 | |
51 | /** |
52 | * logs messages. All we do is store them until |
53 | * 'later'. |
54 | * |
55 | * @param level severity level |
56 | * @param message complete error message |
57 | */ |
58 | public void logVelocityMessage(int level, String message) |
59 | { |
60 | synchronized( this ) |
61 | { |
62 | Object[] data = new Object[2]; |
63 | data[0] = new Integer(level); |
64 | data[1] = message; |
65 | pendingMessages.addElement(data); |
66 | } |
67 | } |
68 | |
69 | /** |
70 | * dumps the log messages this logger is holding into a new logger |
71 | */ |
72 | public void dumpLogMessages( LogSystem newLogger ) |
73 | { |
74 | synchronized( this ) |
75 | { |
76 | if ( !pendingMessages.isEmpty()) |
77 | { |
78 | /* |
79 | * iterate and log each individual message... |
80 | */ |
81 | |
82 | for( Enumeration e = pendingMessages.elements(); e.hasMoreElements(); ) |
83 | { |
84 | Object[] data = (Object[]) e.nextElement(); |
85 | newLogger.logVelocityMessage(((Integer) data[0]).intValue(), (String) data[1]); |
86 | } |
87 | } |
88 | } |
89 | } |
90 | } |