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| <li>Summary: </li> |
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| <div class="subTitle">org.apache.felix.dm.tracker</div> |
| <h2 title="Class ServiceTracker" class="title">Class ServiceTracker</h2> |
| </div> |
| <div class="contentContainer"> |
| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.felix.dm.tracker.ServiceTracker</li> |
| </ul> |
| </li> |
| </ul> |
| <div class="description"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <dl> |
| <dt>All Implemented Interfaces:</dt> |
| <dd><a href="../../../../../org/apache/felix/dm/tracker/ServiceTrackerCustomizer.html" title="interface in org.apache.felix.dm.tracker">ServiceTrackerCustomizer</a></dd> |
| </dl> |
| <hr> |
| <br> |
| <pre>public class <span class="typeNameLabel">ServiceTracker</span> |
| extends java.lang.Object |
| implements <a href="../../../../../org/apache/felix/dm/tracker/ServiceTrackerCustomizer.html" title="interface in org.apache.felix.dm.tracker">ServiceTrackerCustomizer</a></pre> |
| <div class="block">The <code>ServiceTracker</code> class simplifies using services from the |
| Framework's service registry. |
| <p> |
| A <code>ServiceTracker</code> object is constructed with search criteria and |
| a <code>ServiceTrackerCustomizer</code> object. A <code>ServiceTracker</code> |
| can use a <code>ServiceTrackerCustomizer</code> to customize the service |
| objects to be tracked. The <code>ServiceTracker</code> can then be opened to |
| begin tracking all services in the Framework's service registry that match |
| the specified search criteria. The <code>ServiceTracker</code> correctly |
| handles all of the details of listening to <code>ServiceEvent</code>s and |
| getting and ungetting services. |
| <p> |
| The <code>getServiceReferences</code> method can be called to get references |
| to the services being tracked. The <code>getService</code> and |
| <code>getServices</code> methods can be called to get the service objects for |
| the tracked service. |
| <p> |
| The <code>ServiceTracker</code> class is thread-safe. It does not call a |
| <code>ServiceTrackerCustomizer</code> while holding any locks. |
| <code>ServiceTrackerCustomizer</code> implementations must also be |
| thread-safe.</div> |
| </li> |
| </ul> |
| </div> |
| <div class="summary"> |
| <ul class="blockList"> |
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| <!-- =========== FIELD SUMMARY =========== --> |
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| <h3>Field Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation"> |
| <caption><span>Fields</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Field and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected org.osgi.framework.BundleContext</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#context">context</a></span></code> |
| <div class="block">The Bundle Context used by this <code>ServiceTracker</code>.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected org.osgi.framework.Filter</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#filter">filter</a></span></code> |
| <div class="block">The Filter used by this <code>ServiceTracker</code> which specifies the |
| search criteria for the services to track.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#m_trackAllAspects">m_trackAllAspects</a></span></code> |
| <div class="block">Flag that gets set when opening the tracker, determines if the tracker should |
| track all aspects or just the highest ranked ones.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
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| </a> |
| <h3>Constructor Summary</h3> |
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| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colOne" scope="col">Constructor and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#ServiceTracker-org.osgi.framework.BundleContext-org.osgi.framework.Filter-org.apache.felix.dm.tracker.ServiceTrackerCustomizer-">ServiceTracker</a></span>(org.osgi.framework.BundleContext context, |
| org.osgi.framework.Filter filter, |
| <a href="../../../../../org/apache/felix/dm/tracker/ServiceTrackerCustomizer.html" title="interface in org.apache.felix.dm.tracker">ServiceTrackerCustomizer</a> customizer)</code> |
| <div class="block">Create a <code>ServiceTracker</code> on the specified <code>Filter</code> |
| object.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#ServiceTracker-org.osgi.framework.BundleContext-org.osgi.framework.ServiceReference-org.apache.felix.dm.tracker.ServiceTrackerCustomizer-">ServiceTracker</a></span>(org.osgi.framework.BundleContext context, |
| org.osgi.framework.ServiceReference reference, |
| <a href="../../../../../org/apache/felix/dm/tracker/ServiceTrackerCustomizer.html" title="interface in org.apache.felix.dm.tracker">ServiceTrackerCustomizer</a> customizer)</code> |
| <div class="block">Create a <code>ServiceTracker</code> on the specified |
| <code>ServiceReference</code>.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#ServiceTracker-org.osgi.framework.BundleContext-java.lang.String-org.apache.felix.dm.tracker.ServiceTrackerCustomizer-">ServiceTracker</a></span>(org.osgi.framework.BundleContext context, |
| java.lang.String clazz, |
| <a href="../../../../../org/apache/felix/dm/tracker/ServiceTrackerCustomizer.html" title="interface in org.apache.felix.dm.tracker">ServiceTrackerCustomizer</a> customizer)</code> |
| <div class="block">Create a <code>ServiceTracker</code> on the specified class name.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ========== METHOD SUMMARY =========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.summary"> |
| <!-- --> |
| </a> |
| <h3>Method Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#addedService-org.osgi.framework.ServiceReference-java.lang.Object-">addedService</a></span>(org.osgi.framework.ServiceReference reference, |
| java.lang.Object service)</code> |
| <div class="block">marrs: A service has been added to the ServiceTracker.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>java.lang.Object</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#addingService-org.osgi.framework.ServiceReference-">addingService</a></span>(org.osgi.framework.ServiceReference reference)</code> |
| <div class="block">Default implementation of the |
| <code>ServiceTrackerCustomizer.addingService</code> method.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#close--">close</a></span>()</code> |
| <div class="block">Close this <code>ServiceTracker</code>.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>java.lang.Object</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#getService--">getService</a></span>()</code> |
| <div class="block">Returns a service object for one of the services being tracked by this |
| <code>ServiceTracker</code>.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>java.lang.Object</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#getService-org.osgi.framework.ServiceReference-">getService</a></span>(org.osgi.framework.ServiceReference reference)</code> |
| <div class="block">Returns the service object for the specified |
| <code>ServiceReference</code> if the specified referenced service is |
| being tracked by this <code>ServiceTracker</code>.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>org.osgi.framework.ServiceReference</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#getServiceReference--">getServiceReference</a></span>()</code> |
| <div class="block">Returns a <code>ServiceReference</code> for one of the services being |
| tracked by this <code>ServiceTracker</code>.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>org.osgi.framework.ServiceReference[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#getServiceReferences--">getServiceReferences</a></span>()</code> |
| <div class="block">Return an array of <code>ServiceReference</code>s for all services being |
| tracked by this <code>ServiceTracker</code>.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>java.lang.Object[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#getServices--">getServices</a></span>()</code> |
| <div class="block">Return an array of service objects for all services being tracked by this |
| <code>ServiceTracker</code>.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#getTrackingCount--">getTrackingCount</a></span>()</code> |
| <div class="block">Returns the tracking count for this <code>ServiceTracker</code>.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#hasReference--">hasReference</a></span>()</code> |
| <div class="block">Returns a boolean indicating whether this <code>ServiceTracker</code> is tracking any services.</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#modifiedService-org.osgi.framework.ServiceReference-java.lang.Object-">modifiedService</a></span>(org.osgi.framework.ServiceReference reference, |
| java.lang.Object service)</code> |
| <div class="block">Default implementation of the |
| <code>ServiceTrackerCustomizer.modifiedService</code> method.</div> |
| </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#open--">open</a></span>()</code> |
| <div class="block">Open this <code>ServiceTracker</code> and begin tracking services.</div> |
| </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#open-boolean-">open</a></span>(boolean trackAllServices)</code> |
| <div class="block">Open this <code>ServiceTracker</code> and begin tracking services.</div> |
| </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#open-boolean-boolean-">open</a></span>(boolean trackAllServices, |
| boolean trackAllAspects)</code> |
| <div class="block">Open this <code>ServiceTracker</code> and begin tracking services.</div> |
| </td> |
| </tr> |
| <tr id="i14" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#remove-org.osgi.framework.ServiceReference-">remove</a></span>(org.osgi.framework.ServiceReference reference)</code> |
| <div class="block">Remove a service from this <code>ServiceTracker</code>.</div> |
| </td> |
| </tr> |
| <tr id="i15" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#removedService-org.osgi.framework.ServiceReference-java.lang.Object-">removedService</a></span>(org.osgi.framework.ServiceReference reference, |
| java.lang.Object service)</code> |
| <div class="block">Default implementation of the |
| <code>ServiceTrackerCustomizer.removedService</code> method.</div> |
| </td> |
| </tr> |
| <tr id="i16" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#setDebug-java.lang.String-">setDebug</a></span>(java.lang.String debugKey)</code> </td> |
| </tr> |
| <tr id="i17" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#size--">size</a></span>()</code> |
| <div class="block">Return the number of services being tracked by this |
| <code>ServiceTracker</code>.</div> |
| </td> |
| </tr> |
| <tr id="i18" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#swappedService-org.osgi.framework.ServiceReference-java.lang.Object-org.osgi.framework.ServiceReference-java.lang.Object-">swappedService</a></span>(org.osgi.framework.ServiceReference reference, |
| java.lang.Object service, |
| org.osgi.framework.ServiceReference newReference, |
| java.lang.Object newService)</code> |
| <div class="block">A service tracked by the <code>ServiceTracker</code> has an aspect service |
| added or removed for a tracked service.</div> |
| </td> |
| </tr> |
| <tr id="i19" class="rowColor"> |
| <td class="colFirst"><code>java.lang.Object</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#waitForService-long-">waitForService</a></span>(long timeout)</code> |
| <div class="block">Wait for at least one service to be tracked by this |
| <code>ServiceTracker</code>.</div> |
| </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a name="methods.inherited.from.class.java.lang.Object"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from class java.lang.Object</h3> |
| <code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ============ FIELD DETAIL =========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="field.detail"> |
| <!-- --> |
| </a> |
| <h3>Field Detail</h3> |
| <a name="context"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>context</h4> |
| <pre>protected final org.osgi.framework.BundleContext context</pre> |
| <div class="block">The Bundle Context used by this <code>ServiceTracker</code>.</div> |
| </li> |
| </ul> |
| <a name="filter"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>filter</h4> |
| <pre>protected final org.osgi.framework.Filter filter</pre> |
| <div class="block">The Filter used by this <code>ServiceTracker</code> which specifies the |
| search criteria for the services to track.</div> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>1.1</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="m_trackAllAspects"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>m_trackAllAspects</h4> |
| <pre>public boolean m_trackAllAspects</pre> |
| <div class="block">Flag that gets set when opening the tracker, determines if the tracker should |
| track all aspects or just the highest ranked ones.</div> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="constructor.detail"> |
| <!-- --> |
| </a> |
| <h3>Constructor Detail</h3> |
| <a name="ServiceTracker-org.osgi.framework.BundleContext-org.osgi.framework.ServiceReference-org.apache.felix.dm.tracker.ServiceTrackerCustomizer-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>ServiceTracker</h4> |
| <pre>public ServiceTracker(org.osgi.framework.BundleContext context, |
| org.osgi.framework.ServiceReference reference, |
| <a href="../../../../../org/apache/felix/dm/tracker/ServiceTrackerCustomizer.html" title="interface in org.apache.felix.dm.tracker">ServiceTrackerCustomizer</a> customizer)</pre> |
| <div class="block">Create a <code>ServiceTracker</code> on the specified |
| <code>ServiceReference</code>. |
| |
| <p> |
| The service referenced by the specified <code>ServiceReference</code> |
| will be tracked by this <code>ServiceTracker</code>.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>context</code> - The <code>BundleContext</code> against which the tracking |
| is done.</dd> |
| <dd><code>reference</code> - The <code>ServiceReference</code> for the service to be |
| tracked.</dd> |
| <dd><code>customizer</code> - The customizer object to call when services are added, |
| modified, or removed in this <code>ServiceTracker</code>. If |
| customizer is <code>null</code>, then this |
| <code>ServiceTracker</code> will be used as the |
| <code>ServiceTrackerCustomizer</code> and this |
| <code>ServiceTracker</code> will call the |
| <code>ServiceTrackerCustomizer</code> methods on itself.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="ServiceTracker-org.osgi.framework.BundleContext-java.lang.String-org.apache.felix.dm.tracker.ServiceTrackerCustomizer-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>ServiceTracker</h4> |
| <pre>public ServiceTracker(org.osgi.framework.BundleContext context, |
| java.lang.String clazz, |
| <a href="../../../../../org/apache/felix/dm/tracker/ServiceTrackerCustomizer.html" title="interface in org.apache.felix.dm.tracker">ServiceTrackerCustomizer</a> customizer)</pre> |
| <div class="block">Create a <code>ServiceTracker</code> on the specified class name. |
| |
| <p> |
| Services registered under the specified class name will be tracked by |
| this <code>ServiceTracker</code>.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>context</code> - The <code>BundleContext</code> against which the tracking |
| is done.</dd> |
| <dd><code>clazz</code> - The class name of the services to be tracked.</dd> |
| <dd><code>customizer</code> - The customizer object to call when services are added, |
| modified, or removed in this <code>ServiceTracker</code>. If |
| customizer is <code>null</code>, then this |
| <code>ServiceTracker</code> will be used as the |
| <code>ServiceTrackerCustomizer</code> and this |
| <code>ServiceTracker</code> will call the |
| <code>ServiceTrackerCustomizer</code> methods on itself.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="ServiceTracker-org.osgi.framework.BundleContext-org.osgi.framework.Filter-org.apache.felix.dm.tracker.ServiceTrackerCustomizer-"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>ServiceTracker</h4> |
| <pre>public ServiceTracker(org.osgi.framework.BundleContext context, |
| org.osgi.framework.Filter filter, |
| <a href="../../../../../org/apache/felix/dm/tracker/ServiceTrackerCustomizer.html" title="interface in org.apache.felix.dm.tracker">ServiceTrackerCustomizer</a> customizer)</pre> |
| <div class="block">Create a <code>ServiceTracker</code> on the specified <code>Filter</code> |
| object. |
| |
| <p> |
| Services which match the specified <code>Filter</code> object will be |
| tracked by this <code>ServiceTracker</code>.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>context</code> - The <code>BundleContext</code> against which the tracking |
| is done.</dd> |
| <dd><code>filter</code> - The <code>Filter</code> to select the services to be |
| tracked.</dd> |
| <dd><code>customizer</code> - The customizer object to call when services are added, |
| modified, or removed in this <code>ServiceTracker</code>. If |
| customizer is null, then this <code>ServiceTracker</code> will be |
| used as the <code>ServiceTrackerCustomizer</code> and this |
| <code>ServiceTracker</code> will call the |
| <code>ServiceTrackerCustomizer</code> methods on itself.</dd> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>1.1</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ============ METHOD DETAIL ========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.detail"> |
| <!-- --> |
| </a> |
| <h3>Method Detail</h3> |
| <a name="setDebug-java.lang.String-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setDebug</h4> |
| <pre>public void setDebug(java.lang.String debugKey)</pre> |
| </li> |
| </ul> |
| <a name="open--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>open</h4> |
| <pre>public void open()</pre> |
| <div class="block">Open this <code>ServiceTracker</code> and begin tracking services. |
| |
| <p> |
| This implementation calls <code>open(false)</code>.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code>java.lang.IllegalStateException</code> - If the <code>BundleContext</code> |
| with which this <code>ServiceTracker</code> was created is no |
| longer valid.</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#open-boolean-"><code>open(boolean)</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="open-boolean-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>open</h4> |
| <pre>public void open(boolean trackAllServices)</pre> |
| <div class="block">Open this <code>ServiceTracker</code> and begin tracking services. |
| |
| <p> |
| Services which match the search criteria specified when this |
| <code>ServiceTracker</code> was created are now tracked by this |
| <code>ServiceTracker</code>.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>trackAllServices</code> - If <code>true</code>, then this |
| <code>ServiceTracker</code> will track all matching services |
| regardless of class loader accessibility. If <code>false</code>, |
| then this <code>ServiceTracker</code> will only track matching |
| services which are class loader accessible to the bundle whose |
| <code>BundleContext</code> is used by this |
| <code>ServiceTracker</code>.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code>java.lang.IllegalStateException</code> - If the <code>BundleContext</code> |
| with which this <code>ServiceTracker</code> was created is no |
| longer valid.</dd> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>1.3</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="open-boolean-boolean-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>open</h4> |
| <pre>public void open(boolean trackAllServices, |
| boolean trackAllAspects)</pre> |
| <div class="block">Open this <code>ServiceTracker</code> and begin tracking services. |
| |
| <p> |
| Services which match the search criteria specified when this |
| <code>ServiceTracker</code> was created are now tracked by this |
| <code>ServiceTracker</code>.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>trackAllServices</code> - If <code>true</code>, then this |
| <code>ServiceTracker</code> will track all matching services |
| regardless of class loader accessibility. If <code>false</code>, |
| then this <code>ServiceTracker</code> will only track matching |
| services which are class loader accessible to the bundle whose |
| <code>BundleContext</code> is used by this |
| <code>ServiceTracker</code>.</dd> |
| <dd><code>trackAllAspects</code> - If <code>true</code> then this |
| <code>ServiceTracker</code> will track all aspects regardless |
| of their rank. If <code>false</code> only the highest ranked |
| aspects (or the original service if there are no aspects) will |
| be tracked. The latter is the default.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code>java.lang.IllegalStateException</code> - If the <code>BundleContext</code> |
| with which this <code>ServiceTracker</code> was created is no |
| longer valid.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="close--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>close</h4> |
| <pre>public void close()</pre> |
| <div class="block">Close this <code>ServiceTracker</code>. |
| |
| <p> |
| This method should be called when this <code>ServiceTracker</code> should |
| end the tracking of services. |
| |
| <p> |
| This implementation calls <a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#getServiceReferences--"><code>getServiceReferences()</code></a> to get the list |
| of tracked services to remove.</div> |
| </li> |
| </ul> |
| <a name="addingService-org.osgi.framework.ServiceReference-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>addingService</h4> |
| <pre>public java.lang.Object addingService(org.osgi.framework.ServiceReference reference)</pre> |
| <div class="block">Default implementation of the |
| <code>ServiceTrackerCustomizer.addingService</code> method. |
| |
| <p> |
| This method is only called when this <code>ServiceTracker</code> has been |
| constructed with a <code>null ServiceTrackerCustomizer</code> argument. |
| |
| <p> |
| This implementation returns the result of calling <code>getService</code> |
| on the <code>BundleContext</code> with which this |
| <code>ServiceTracker</code> was created passing the specified |
| <code>ServiceReference</code>. |
| <p> |
| This method can be overridden in a subclass to customize the service |
| object to be tracked for the service being added. In that case, take care |
| not to rely on the default implementation of |
| <a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#removedService-org.osgi.framework.ServiceReference-java.lang.Object-"><code>removedService</code></a> to unget |
| the service.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/felix/dm/tracker/ServiceTrackerCustomizer.html#addingService-org.osgi.framework.ServiceReference-">addingService</a></code> in interface <code><a href="../../../../../org/apache/felix/dm/tracker/ServiceTrackerCustomizer.html" title="interface in org.apache.felix.dm.tracker">ServiceTrackerCustomizer</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>reference</code> - The reference to the service being added to this |
| <code>ServiceTracker</code>.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>The service object to be tracked for the service added to this |
| <code>ServiceTracker</code>.</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../org/apache/felix/dm/tracker/ServiceTrackerCustomizer.html#addingService-org.osgi.framework.ServiceReference-"><code>ServiceTrackerCustomizer.addingService(ServiceReference)</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="addedService-org.osgi.framework.ServiceReference-java.lang.Object-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>addedService</h4> |
| <pre>public void addedService(org.osgi.framework.ServiceReference reference, |
| java.lang.Object service)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../org/apache/felix/dm/tracker/ServiceTrackerCustomizer.html#addedService-org.osgi.framework.ServiceReference-java.lang.Object-">ServiceTrackerCustomizer</a></code></span></div> |
| <div class="block">marrs: A service has been added to the ServiceTracker.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/felix/dm/tracker/ServiceTrackerCustomizer.html#addedService-org.osgi.framework.ServiceReference-java.lang.Object-">addedService</a></code> in interface <code><a href="../../../../../org/apache/felix/dm/tracker/ServiceTrackerCustomizer.html" title="interface in org.apache.felix.dm.tracker">ServiceTrackerCustomizer</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="modifiedService-org.osgi.framework.ServiceReference-java.lang.Object-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>modifiedService</h4> |
| <pre>public void modifiedService(org.osgi.framework.ServiceReference reference, |
| java.lang.Object service)</pre> |
| <div class="block">Default implementation of the |
| <code>ServiceTrackerCustomizer.modifiedService</code> method. |
| |
| <p> |
| This method is only called when this <code>ServiceTracker</code> has been |
| constructed with a <code>null ServiceTrackerCustomizer</code> argument. |
| |
| <p> |
| This implementation does nothing.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/felix/dm/tracker/ServiceTrackerCustomizer.html#modifiedService-org.osgi.framework.ServiceReference-java.lang.Object-">modifiedService</a></code> in interface <code><a href="../../../../../org/apache/felix/dm/tracker/ServiceTrackerCustomizer.html" title="interface in org.apache.felix.dm.tracker">ServiceTrackerCustomizer</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>reference</code> - The reference to modified service.</dd> |
| <dd><code>service</code> - The service object for the modified service.</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../org/apache/felix/dm/tracker/ServiceTrackerCustomizer.html#modifiedService-org.osgi.framework.ServiceReference-java.lang.Object-"><code>ServiceTrackerCustomizer.modifiedService(ServiceReference, Object)</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="removedService-org.osgi.framework.ServiceReference-java.lang.Object-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>removedService</h4> |
| <pre>public void removedService(org.osgi.framework.ServiceReference reference, |
| java.lang.Object service)</pre> |
| <div class="block">Default implementation of the |
| <code>ServiceTrackerCustomizer.removedService</code> method. |
| |
| <p> |
| This method is only called when this <code>ServiceTracker</code> has been |
| constructed with a <code>null ServiceTrackerCustomizer</code> argument. |
| |
| <p> |
| This implementation calls <code>ungetService</code>, on the |
| <code>BundleContext</code> with which this <code>ServiceTracker</code> |
| was created, passing the specified <code>ServiceReference</code>. |
| <p> |
| This method can be overridden in a subclass. If the default |
| implementation of <a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#addingService-org.osgi.framework.ServiceReference-"><code>addingService</code></a> |
| method was used, this method must unget the service.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/felix/dm/tracker/ServiceTrackerCustomizer.html#removedService-org.osgi.framework.ServiceReference-java.lang.Object-">removedService</a></code> in interface <code><a href="../../../../../org/apache/felix/dm/tracker/ServiceTrackerCustomizer.html" title="interface in org.apache.felix.dm.tracker">ServiceTrackerCustomizer</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>reference</code> - The reference to removed service.</dd> |
| <dd><code>service</code> - The service object for the removed service.</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../org/apache/felix/dm/tracker/ServiceTrackerCustomizer.html#removedService-org.osgi.framework.ServiceReference-java.lang.Object-"><code>ServiceTrackerCustomizer.removedService(ServiceReference, Object)</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="waitForService-long-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>waitForService</h4> |
| <pre>public java.lang.Object waitForService(long timeout) |
| throws java.lang.InterruptedException</pre> |
| <div class="block">Wait for at least one service to be tracked by this |
| <code>ServiceTracker</code>. This method will also return when this |
| <code>ServiceTracker</code> is closed. |
| |
| <p> |
| It is strongly recommended that <code>waitForService</code> is not used |
| during the calling of the <code>BundleActivator</code> methods. |
| <code>BundleActivator</code> methods are expected to complete in a short |
| period of time. |
| |
| <p> |
| This implementation calls <a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#getService--"><code>getService()</code></a> to determine if a service |
| is being tracked.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>timeout</code> - The time interval in milliseconds to wait. If zero, the |
| method will wait indefinitely.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Returns the result of <a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#getService--"><code>getService()</code></a>.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code>java.lang.InterruptedException</code> - If another thread has interrupted the |
| current thread.</dd> |
| <dd><code>java.lang.IllegalArgumentException</code> - If the value of timeout is negative.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getServiceReferences--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getServiceReferences</h4> |
| <pre>public org.osgi.framework.ServiceReference[] getServiceReferences()</pre> |
| <div class="block">Return an array of <code>ServiceReference</code>s for all services being |
| tracked by this <code>ServiceTracker</code>.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Array of <code>ServiceReference</code>s or <code>null</code> if |
| no services are being tracked.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="hasReference--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>hasReference</h4> |
| <pre>public boolean hasReference()</pre> |
| <div class="block">Returns a boolean indicating whether this <code>ServiceTracker</code> is tracking any services.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if services are being tracked, false if no services are being tracked.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getServiceReference--"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getServiceReference</h4> |
| <pre>public org.osgi.framework.ServiceReference getServiceReference()</pre> |
| <div class="block">Returns a <code>ServiceReference</code> for one of the services being |
| tracked by this <code>ServiceTracker</code>. |
| |
| <p> |
| If multiple services are being tracked, the service with the highest |
| ranking (as specified in its <code>service.ranking</code> property) is |
| returned. If there is a tie in ranking, the service with the lowest |
| service ID (as specified in its <code>service.id</code> property); that |
| is, the service that was registered first is returned. This is the same |
| algorithm used by <code>BundleContext.getServiceReference</code>. |
| |
| <p> |
| This implementation calls <a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#getServiceReferences--"><code>getServiceReferences()</code></a> to get the list |
| of references for the tracked services.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>A <code>ServiceReference</code> or <code>null</code> if no |
| services are being tracked.</dd> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>1.1</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getService-org.osgi.framework.ServiceReference-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getService</h4> |
| <pre>public java.lang.Object getService(org.osgi.framework.ServiceReference reference)</pre> |
| <div class="block">Returns the service object for the specified |
| <code>ServiceReference</code> if the specified referenced service is |
| being tracked by this <code>ServiceTracker</code>.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>reference</code> - The reference to the desired service.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>A service object or <code>null</code> if the service referenced |
| by the specified <code>ServiceReference</code> is not being |
| tracked.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getServices--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getServices</h4> |
| <pre>public java.lang.Object[] getServices()</pre> |
| <div class="block">Return an array of service objects for all services being tracked by this |
| <code>ServiceTracker</code>. |
| |
| <p> |
| This implementation calls <a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#getServiceReferences--"><code>getServiceReferences()</code></a> to get the list |
| of references for the tracked services and then calls |
| <a href="../../../../../org/apache/felix/dm/tracker/ServiceTracker.html#getService-org.osgi.framework.ServiceReference-"><code>getService(ServiceReference)</code></a> for each reference to get the |
| tracked service object.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>An array of service objects or <code>null</code> if no services |
| are being tracked.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getService--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getService</h4> |
| <pre>public java.lang.Object getService()</pre> |
| <div class="block">Returns a service object for one of the services being tracked by this |
| <code>ServiceTracker</code>. |
| |
| <p> |
| If any services are being tracked, this implementation returns the result |
| of calling <code>getService(getServiceReference())</code>.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>A service object or <code>null</code> if no services are being |
| tracked.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="remove-org.osgi.framework.ServiceReference-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>remove</h4> |
| <pre>public void remove(org.osgi.framework.ServiceReference reference)</pre> |
| <div class="block">Remove a service from this <code>ServiceTracker</code>. |
| |
| The specified service will be removed from this |
| <code>ServiceTracker</code>. If the specified service was being tracked |
| then the <code>ServiceTrackerCustomizer.removedService</code> method will |
| be called for that service.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>reference</code> - The reference to the service to be removed.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="size--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>size</h4> |
| <pre>public int size()</pre> |
| <div class="block">Return the number of services being tracked by this |
| <code>ServiceTracker</code>.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>The number of services being tracked.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getTrackingCount--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getTrackingCount</h4> |
| <pre>public int getTrackingCount()</pre> |
| <div class="block">Returns the tracking count for this <code>ServiceTracker</code>. |
| |
| The tracking count is initialized to 0 when this |
| <code>ServiceTracker</code> is opened. Every time a service is added, |
| modified or removed from this <code>ServiceTracker</code>, the tracking |
| count is incremented. |
| |
| <p> |
| The tracking count can be used to determine if this |
| <code>ServiceTracker</code> has added, modified or removed a service by |
| comparing a tracking count value previously collected with the current |
| tracking count value. If the value has not changed, then no service has |
| been added, modified or removed from this <code>ServiceTracker</code> |
| since the previous tracking count was collected.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>The tracking count for this <code>ServiceTracker</code> or -1 if |
| this <code>ServiceTracker</code> is not open.</dd> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>1.2</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="swappedService-org.osgi.framework.ServiceReference-java.lang.Object-org.osgi.framework.ServiceReference-java.lang.Object-"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>swappedService</h4> |
| <pre>public void swappedService(org.osgi.framework.ServiceReference reference, |
| java.lang.Object service, |
| org.osgi.framework.ServiceReference newReference, |
| java.lang.Object newService)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../org/apache/felix/dm/tracker/ServiceTrackerCustomizer.html#swappedService-org.osgi.framework.ServiceReference-java.lang.Object-org.osgi.framework.ServiceReference-java.lang.Object-">ServiceTrackerCustomizer</a></code></span></div> |
| <div class="block">A service tracked by the <code>ServiceTracker</code> has an aspect service |
| added or removed for a tracked service. |
| |
| <p> |
| This method is called when an aspect service has been either added or removed |
| for a tracked service. This method will only be called when there's a new |
| highest ranked service as result of adding or removal of the aspect service. |
| In this case the previously highest ranked service is 'swapped' for the new |
| highest ranked service ensuring the client always gets the highest ranked |
| aspect.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/felix/dm/tracker/ServiceTrackerCustomizer.html#swappedService-org.osgi.framework.ServiceReference-java.lang.Object-org.osgi.framework.ServiceReference-java.lang.Object-">swappedService</a></code> in interface <code><a href="../../../../../org/apache/felix/dm/tracker/ServiceTrackerCustomizer.html" title="interface in org.apache.felix.dm.tracker">ServiceTrackerCustomizer</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>reference</code> - The reference for the old highest ranked service.</dd> |
| <dd><code>service</code> - The service object for the old highest ranked service.</dd> |
| <dd><code>newReference</code> - The reference to the new highest ranked service.</dd> |
| <dd><code>newService</code> - The service object for the new highest ranked service.</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
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