01: /*
02: * <copyright>
03: *
04: * Copyright 2003-2004 BBNT Solutions, LLC
05: * under sponsorship of the Defense Advanced Research Projects
06: * Agency (DARPA).
07: *
08: * You can redistribute this software and/or modify it under the
09: * terms of the Cougaar Open Source License as published on the
10: * Cougaar Open Source Website (www.cougaar.org).
11: *
12: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
13: * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
14: * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
15: * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
16: * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
17: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
18: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
22: * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23: *
24: * </copyright>
25: */
26: package org.cougaar.tools.server.system.other;
27:
28: import org.cougaar.tools.server.system.JavaThreadDumper;
29: import org.cougaar.tools.server.system.ProcessKiller;
30: import org.cougaar.tools.server.system.ProcessLauncher;
31: import org.cougaar.tools.server.system.ProcessStatusReader;
32: import org.cougaar.tools.server.system.SystemAccessFactory;
33:
34: /**
35: * Stub <code>SystemAccessFactory<code> for Operating Systems
36: * that are either:<pre>
37: * - unknown
38: * or
39: * - don't support process-aware commands (Windows, etc)
40: * </pre>
41: */
42: public class NullSystemAccessFactory extends SystemAccessFactory {
43:
44: private static final NullSystemAccessFactory SINGLETON = new NullSystemAccessFactory();
45:
46: private final NullProcessLauncher npl;
47:
48: private NullSystemAccessFactory() {
49: // see "getNullInstance()"
50: npl = new NullProcessLauncher();
51: }
52:
53: public static NullSystemAccessFactory getNullInstance() {
54: return SINGLETON;
55: }
56:
57: public ProcessLauncher createProcessLauncher() {
58: return npl;
59: }
60:
61: public JavaThreadDumper createJavaThreadDumper() {
62: return null;
63: }
64:
65: public ProcessStatusReader createProcessStatusReader() {
66: return null;
67: }
68:
69: public ProcessKiller createProcessKiller() {
70: return null;
71: }
72:
73: }
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