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   * Copyright (c) OSGi Alliance (2004, 2010). 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
  * 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.service.packageadmin;
A required bundle. Objects implementing this interface are created by the Package Admin service.

The term required bundle refers to a resolved bundle that has a bundle symbolic name and is not a fragment. That is, a bundle that may be required by other bundles. This bundle may or may not be currently required by other bundles.

The information about a required bundle provided by this object may change. A RequiredBundle object becomes stale if an exported package of the bundle it references has been updated or removed as a result of calling PackageAdmin.refreshPackages()). If this object becomes stale, its getSymbolicName() and getVersion() methods continue to return their original values, isRemovalPending() returns true, and getBundle() and getRequiringBundles() return null.

The PackageAdmin service has been replaced by the org.osgi.framework.wiring package.
$Id: 1606b0422cae6769b7eedc2d565df61841da1e22 $
 public interface RequiredBundle {
Returns the symbolic name of this required bundle.

The symbolic name of this required bundle.
 	public String getSymbolicName();

Returns the bundle associated with this required bundle.

The bundle, or null if this RequiredBundle object has become stale.
 	public Bundle getBundle();

Returns the bundles that currently require this required bundle.

If this required bundle is required and then re-exported by another bundle then all the requiring bundles of the re-exporting bundle are included in the returned array.

An array of bundles currently requiring this required bundle, or null if this RequiredBundle object has become stale. The array will be empty if no bundles require this required package.
 	public Bundle[] getRequiringBundles();

Returns the version of this required bundle.

The version of this required bundle, or org.osgi.framework.Version.emptyVersion if no version information is available.
 	public Version getVersion();

Returns true if the bundle associated with this RequiredBundle object has been updated or uninstalled.

true if the required bundle has been updated or uninstalled, or if the RequiredBundle object has become stale; false otherwise.
 	public boolean isRemovalPending();
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