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comparison org.eclipse.osgi/osgi/src/org/osgi/framework/BundleActivator.d @ 86:12b890a6392a

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Work on databinding
author Frank Benoit <benoit@tionex.de>
date Sat, 18 Apr 2009 13:58:35 +0200
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children bbe49769ec18
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85:6be48cf9f95c 86:12b890a6392a
1 /*
2 * $Header: /cvshome/build/org.osgi.framework/src/org/osgi/framework/BundleActivator.java,v 1.14 2007/02/21 16:49:05 hargrave Exp $
3 *
4 * Copyright (c) OSGi Alliance (2000, 2007). All Rights Reserved.
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 module org.osgi.framework.BundleActivator;
20 import org.osgi.framework.Bundle;
21 import org.osgi.framework.BundleContext;
22
23 import java.lang.all;
24
25 /**
26 * Customizes the starting and stopping of a bundle.
27 * <p>
28 * <code>BundleActivator</code> is an interface that may be implemented when a
29 * bundle is started or stopped. The Framework can create instances of a
30 * bundle's <code>BundleActivator</code> as required. If an instance's
31 * <code>BundleActivator.start</code> method executes successfully, it is
32 * guaranteed that the same instance's <code>BundleActivator.stop</code>
33 * method will be called when the bundle is to be stopped. The Framework must
34 * not concurrently call a <code>BundleActivator</code> object.
35 *
36 * <p>
37 * <code>BundleActivator</code> is specified through the
38 * <code>Bundle-Activator</code> Manifest header. A bundle can only specify a
39 * single <code>BundleActivator</code> in the Manifest file. Fragment bundles
40 * must not have a <code>BundleActivator</code>. The form of the Manifest
41 * header is:
42 *
43 * <p>
44 * <code>Bundle-Activator: <i>class-name</i></code>
45 *
46 * <p>
47 * where <code><i>class-name</i></code> is a fully qualified Java classname.
48 * <p>
49 * The specified <code>BundleActivator</code> class must have a public
50 * constructor that takes no parameters so that a <code>BundleActivator</code>
51 * object can be created by <code>Class.newInstance()</code>.
52 *
53 * @NotThreadSafe
54 * @version $Revision: 1.14 $
55 */
56
57 public interface BundleActivator {
58 /**
59 * Called when this bundle is started so the Framework can perform the
60 * bundle-specific activities necessary to start this bundle. This method
61 * can be used to register services or to allocate any resources that this
62 * bundle needs.
63 *
64 * <p>
65 * This method must complete and return to its caller in a timely manner.
66 *
67 * @param context The execution context of the bundle being started.
68 * @throws java.lang.Exception If this method throws an exception, this
69 * bundle is marked as stopped and the Framework will remove this
70 * bundle's listeners, unregister all services registered by this
71 * bundle, and release all services used by this bundle.
72 */
73 public void start(BundleContext context);
74
75 /**
76 * Called when this bundle is stopped so the Framework can perform the
77 * bundle-specific activities necessary to stop the bundle. In general, this
78 * method should undo the work that the <code>BundleActivator.start</code>
79 * method started. There should be no active threads that were started by
80 * this bundle when this bundle returns. A stopped bundle must not call any
81 * Framework objects.
82 *
83 * <p>
84 * This method must complete and return to its caller in a timely manner.
85 *
86 * @param context The execution context of the bundle being stopped.
87 * @throws java.lang.Exception If this method throws an exception, the
88 * bundle is still marked as stopped, and the Framework will remove
89 * the bundle's listeners, unregister all services registered by the
90 * bundle, and release all services used by the bundle.
91 */
92 public void stop(BundleContext context);
93 }