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<div class="subTitle">org.osgi.util.tracker</div>
<h2 title="Interface BundleTrackerCustomizer" class="title">Interface BundleTrackerCustomizer<T></h2>
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<dl><dt><span class="strong">Type Parameters:</span></dt><dd><code>T</code> - The type of the tracked object.</dd></dl>
<dl>
<dt>All Known Implementing Classes:</dt>
<dd><a href="../../../../org/osgi/util/tracker/BundleTracker.html" title="class in org.osgi.util.tracker">BundleTracker</a></dd>
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<pre>@ConsumerType
public interface <span class="strong">BundleTrackerCustomizer<T></span></pre>
<div class="block">The <code>BundleTrackerCustomizer</code> interface allows a <code>BundleTracker</code>
to customize the <code>Bundle</code>s that are tracked. A
<code>BundleTrackerCustomizer</code> is called when a bundle is being added to a
<code>BundleTracker</code>. The <code>BundleTrackerCustomizer</code> can then return an
object for the tracked bundle. A <code>BundleTrackerCustomizer</code> is also
called when a tracked bundle is modified or has been removed from a
<code>BundleTracker</code>.
<p>
The methods in this interface may be called as the result of a
<code>BundleEvent</code> being received by a <code>BundleTracker</code>. Since
<code>BundleEvent</code>s are received synchronously by the <code>BundleTracker</code>,
it is highly recommended that implementations of these methods do not alter
bundle states while being synchronized on any object.
<p>
The <code>BundleTracker</code> class is thread-safe. It does not call a
<code>BundleTrackerCustomizer</code> while holding any locks.
<code>BundleTrackerCustomizer</code> implementations must also be thread-safe.</div>
<dl><dt><span class="strong">Since:</span></dt>
<dd>1.4</dd></dl>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
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<td class="colFirst"><code><a href="../../../../org/osgi/util/tracker/BundleTrackerCustomizer.html" title="type parameter in BundleTrackerCustomizer">T</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/osgi/util/tracker/BundleTrackerCustomizer.html#addingBundle(org.osgi.framework.Bundle,%20org.osgi.framework.BundleEvent)">addingBundle</a></strong>(<a href="../../../../org/osgi/framework/Bundle.html" title="interface in org.osgi.framework">Bundle</a> bundle,
<a href="../../../../org/osgi/framework/BundleEvent.html" title="class in org.osgi.framework">BundleEvent</a> event)</code>
<div class="block">A bundle is being added to the <code>BundleTracker</code>.</div>
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<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../org/osgi/util/tracker/BundleTrackerCustomizer.html#modifiedBundle(org.osgi.framework.Bundle,%20org.osgi.framework.BundleEvent,%20T)">modifiedBundle</a></strong>(<a href="../../../../org/osgi/framework/Bundle.html" title="interface in org.osgi.framework">Bundle</a> bundle,
<a href="../../../../org/osgi/framework/BundleEvent.html" title="class in org.osgi.framework">BundleEvent</a> event,
<a href="../../../../org/osgi/util/tracker/BundleTrackerCustomizer.html" title="type parameter in BundleTrackerCustomizer">T</a> object)</code>
<div class="block">A bundle tracked by the <code>BundleTracker</code> has been modified.</div>
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<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../org/osgi/util/tracker/BundleTrackerCustomizer.html#removedBundle(org.osgi.framework.Bundle,%20org.osgi.framework.BundleEvent,%20T)">removedBundle</a></strong>(<a href="../../../../org/osgi/framework/Bundle.html" title="interface in org.osgi.framework">Bundle</a> bundle,
<a href="../../../../org/osgi/framework/BundleEvent.html" title="class in org.osgi.framework">BundleEvent</a> event,
<a href="../../../../org/osgi/util/tracker/BundleTrackerCustomizer.html" title="type parameter in BundleTrackerCustomizer">T</a> object)</code>
<div class="block">A bundle tracked by the <code>BundleTracker</code> has been removed.</div>
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<a name="addingBundle(org.osgi.framework.Bundle, org.osgi.framework.BundleEvent)">
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<h4>addingBundle</h4>
<pre><a href="../../../../org/osgi/util/tracker/BundleTrackerCustomizer.html" title="type parameter in BundleTrackerCustomizer">T</a> addingBundle(<a href="../../../../org/osgi/framework/Bundle.html" title="interface in org.osgi.framework">Bundle</a> bundle,
<a href="../../../../org/osgi/framework/BundleEvent.html" title="class in org.osgi.framework">BundleEvent</a> event)</pre>
<div class="block">A bundle is being added to the <code>BundleTracker</code>.
<p>
This method is called before a bundle which matched the search parameters
of the <code>BundleTracker</code> is added to the <code>BundleTracker</code>. This
method should return the object to be tracked for the specified
<code>Bundle</code>. The returned object is stored in the
<code>BundleTracker</code> and is available from the
<a href="../../../../org/osgi/util/tracker/BundleTracker.html#getObject(org.osgi.framework.Bundle)"><code>getObject</code></a> method.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>bundle</code> - The <code>Bundle</code> being added to the <code>BundleTracker</code>
.</dd><dd><code>event</code> - The bundle event which caused this customizer method to be
called or <code>null</code> if there is no bundle event associated with
the call to this method.</dd>
<dt><span class="strong">Returns:</span></dt><dd>The object to be tracked for the specified <code>Bundle</code> object
or <code>null</code> if the specified <code>Bundle</code> object should not
be tracked.</dd></dl>
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<h4>modifiedBundle</h4>
<pre>void modifiedBundle(<a href="../../../../org/osgi/framework/Bundle.html" title="interface in org.osgi.framework">Bundle</a> bundle,
<a href="../../../../org/osgi/framework/BundleEvent.html" title="class in org.osgi.framework">BundleEvent</a> event,
<a href="../../../../org/osgi/util/tracker/BundleTrackerCustomizer.html" title="type parameter in BundleTrackerCustomizer">T</a> object)</pre>
<div class="block">A bundle tracked by the <code>BundleTracker</code> has been modified.
<p>
This method is called when a bundle being tracked by the
<code>BundleTracker</code> has had its state modified.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>bundle</code> - The <code>Bundle</code> whose state has been modified.</dd><dd><code>event</code> - The bundle event which caused this customizer method to be
called or <code>null</code> if there is no bundle event associated with
the call to this method.</dd><dd><code>object</code> - The tracked object for the specified bundle.</dd></dl>
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<h4>removedBundle</h4>
<pre>void removedBundle(<a href="../../../../org/osgi/framework/Bundle.html" title="interface in org.osgi.framework">Bundle</a> bundle,
<a href="../../../../org/osgi/framework/BundleEvent.html" title="class in org.osgi.framework">BundleEvent</a> event,
<a href="../../../../org/osgi/util/tracker/BundleTrackerCustomizer.html" title="type parameter in BundleTrackerCustomizer">T</a> object)</pre>
<div class="block">A bundle tracked by the <code>BundleTracker</code> has been removed.
<p>
This method is called after a bundle is no longer being tracked by the
<code>BundleTracker</code>.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>bundle</code> - The <code>Bundle</code> that has been removed.</dd><dd><code>event</code> - The bundle event which caused this customizer method to be
called or <code>null</code> if there is no bundle event associated with
the call to this method.</dd><dd><code>object</code> - The tracked object for the specified bundle.</dd></dl>
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