01: /*
02: * Jalisto - JAva LIght STOrage
03: * Copyright (C) 2000-2005 Xcalia http://www.xcalia.com
04: *
05: * This library is free software; you can redistribute it and/or
06: * modify it under the terms of the GNU Lesser General Public
07: * License as published by the Free Software Foundation; either
08: * version 2.1 of the License, or (at your option) any later version.
09: *
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;
27: import java.util.HashSet;
28:
29: public class TraceContext {
30: private HashSet moduleNames;
31: private boolean isEnable;
32: private Trace tracer;
33:
34: public TraceContext(boolean enable, Collection moduleNamesToAdd) {
35: isEnable = enable;
36: moduleNames = new HashSet(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: }
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