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Java > Open Source Codes > org > objectweb > jalisto > se > impl > trace > TraceContext


1 /*
2  * Jalisto - JAva LIght STOrage
3  * Copyright (C) 2000-2005 Xcalia http://www.xcalia.com
4  *
5  * This library is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Lesser General Public
7  * License as published by the Free Software Foundation; either
8  * version 2.1 of the License, or (at your option) any later version.
9  *
10  * This library is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13  * Lesser General Public License for more details.
14  *
15  * You should have received a copy of the GNU Lesser General Public
16  * License along with this library; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
18  *
19  * Xcalia
20  * 71, rue Desnouettes
21  * 75014 Paris - France
22  * http://www.xcalia.com
23  */
24 package org.objectweb.jalisto.se.impl.trace;
25
26 import java.util.Collection JavaDoc;
27 import java.util.HashSet JavaDoc;
28
29 public class TraceContext {
30     private HashSet JavaDoc moduleNames;
31     private boolean isEnable;
32     private Trace tracer;
33
34     public TraceContext(boolean enable, Collection JavaDoc moduleNamesToAdd) {
35         isEnable = enable;
36         moduleNames = new HashSet JavaDoc(moduleNamesToAdd);
37         if (isEnable) {
38             moduleNames.add("TRACE");
39         }
40     }
41
42     public boolean isTracing(Trace.Module component) {
43         return (isEnable && moduleNames.contains(component.getName()));
44     }
45
46     public Trace getTracer() {
47         if (tracer == null) {
48             if (moduleNames.isEmpty()) {
49                 tracer = new TraceNull();
50             } else {
51                 tracer = new TraceErr(this);
52                 tracer.enableTrace(isEnable);
53                 tracer.init(moduleNames.iterator());
54             }
55         }
56         return tracer;
57     }
58 }
59
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