01: /* ========================================================================
02: * JCommon : a free general purpose class library for the Java(tm) platform
03: * ========================================================================
04: *
05: * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
06: *
07: * Project Info: http://www.jfree.org/jcommon/index.html
08: *
09: * This library is free software; you can redistribute it and/or modify it
10: * under the terms of the GNU Lesser General Public License as published by
11: * the Free Software Foundation; either version 2.1 of the License, or
12: * (at your option) any later version.
13: *
14: * This library is distributed in the hope that it will be useful, but
15: * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
16: * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
17: * License for more details.
18: *
19: * You should have received a copy of the GNU Lesser General Public
20: * License along with this library; if not, write to the Free Software
21: * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
22: * USA.
23: *
24: * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
25: * in the United States and other countries.]
26: *
27: * --------------
28: * SubSystem.java
29: * --------------
30: * (C)opyright 2003, 2004, by Thomas Morgner and Contributors.
31: *
32: * Original Author: Thomas Morgner;
33: * Contributor(s): David Gilbert (for Object Refinery Limited);
34: *
35: * $Id: SubSystem.java,v 1.5 2005/10/18 13:14:50 mungady Exp $
36: *
37: * Changes
38: * -------
39: * 10-Jul-2003 : Initial version
40: * 07-Jun-2004 : Added JCommon header (DG);
41: *
42: */
43:
44: package org.jfree.base.modules;
45:
46: import org.jfree.util.Configuration;
47: import org.jfree.util.ExtendedConfiguration;
48:
49: /**
50: * A sub-system holds a separate collection of modules.
51: * <p>
52: * On a simple level, subsystems can be just libraries.
53: * Libraries offering services need a controlled way to
54: * initialize these services before dependent code starts
55: * using the library. This can be achived by embedding the
56: * library services into an own subsystem.
57: *
58: * @author Thomas Morgner
59: */
60: public interface SubSystem {
61:
62: /**
63: * Returns the global configuration.
64: *
65: * @return The global configuration.
66: */
67: public Configuration getGlobalConfig();
68:
69: /**
70: * Returns the global configuration as ExtendedConfiguration instance.
71: *
72: * @return the extended configuration.
73: */
74: public ExtendedConfiguration getExtendedConfig();
75:
76: /**
77: * Returns the package manager.
78: *
79: * @return The package manager.
80: */
81: public PackageManager getPackageManager();
82:
83: }
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