/*
 * Copyright (c) OSGi Alliance (2011, 2013). All Rights Reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.osgi.framework.wiring;

import java.util.List;
import org.osgi.annotation.versioning.ProviderType;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleReference;

The bundle revisions of a bundle. When a bundle is installed and each time a bundle is updated, a new bundle revision of the bundle is created. For a bundle that has not been uninstalled, the most recent bundle revision is defined to be the current bundle revision. A bundle in the UNINSTALLED state does not have a current revision. An in use bundle revision is associated with an in use BundleWiring. The current bundle revision, if there is one, and all in use bundle revisions are returned. 
 The bundle revisions for a bundle can be obtained by calling bundle.adapt(BundleRevisions.class). getRevisions() on the bundle. 
Author:
$Id: 83e7bf03af2150a54af13a319325856e532cefde $
@ThreadSafe
/**
 * The {@link BundleRevision bundle revisions} of a bundle. When a bundle is
 * installed and each time a bundle is updated, a new bundle revision of the
 * bundle is created. For a bundle that has not been uninstalled, the most
 * recent bundle revision is defined to be the current bundle revision. A bundle
 * in the UNINSTALLED state does not have a current revision. An in use bundle
 * revision is associated with an {@link BundleWiring#isInUse() in use}
 * {@link BundleWiring}. The current bundle revision, if there is one, and all
 * in use bundle revisions are returned.
 * 
 * <p>
 * The bundle revisions for a bundle can be obtained by calling
 * {@link Bundle#adapt(Class) bundle.adapt}({@link BundleRevisions}.class).
 * {@link #getRevisions()} on the bundle.
 * 
 * @ThreadSafe
 * @author $Id: 83e7bf03af2150a54af13a319325856e532cefde $
 */
@ProviderType
public interface BundleRevisions extends BundleReference {
	
Return the bundle revisions for the 
referenced bundle. 

The result is a list containing the current bundle revision, if there is
one, and all in use bundle revisions. The list may also contain
intermediate bundle revisions which are not in use.

The list is ordered in reverse chronological order such that the first
item is the most recent bundle revision and last item is the oldest
bundle revision.

Generally the list will have at least one bundle revision for the bundle:
the current bundle revision. However, for an uninstalled bundle with no
in use bundle revisions, the list may be empty.
Returns:
A list containing a snapshot of the BundleRevisions for the referenced bundle./**
	 * Return the bundle revisions for the {@link BundleReference#getBundle()
	 * referenced} bundle.
	 * 
	 * <p>
	 * The result is a list containing the current bundle revision, if there is
	 * one, and all in use bundle revisions. The list may also contain
	 * intermediate bundle revisions which are not in use.
	 * 
	 * <p>
	 * The list is ordered in reverse chronological order such that the first
	 * item is the most recent bundle revision and last item is the oldest
	 * bundle revision.
	 * 
	 * <p>
	 * Generally the list will have at least one bundle revision for the bundle:
	 * the current bundle revision. However, for an uninstalled bundle with no
	 * in use bundle revisions, the list may be empty.
	 * 
	 * @return A list containing a snapshot of the {@link BundleRevision}s for
	 *         the referenced bundle.
	 */
	List<BundleRevision> getRevisions();
}