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| <li>Summary: </li> |
| <li><a href="#annotation_type_required_element_summary">Required</a> | </li> |
| <li><a href="#annotation_type_optional_element_summary">Optional</a></li> |
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| <li>Detail: </li> |
| <li><a href="#annotation_type_element_detail">Element</a></li> |
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| <div class="subTitle">org.apache.felix.dm.annotation.api</div> |
| <h2 title="Annotation Type AspectService" class="title">Annotation Type AspectService</h2> |
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| <pre>@Retention(value=CLASS) |
| @Target(value=TYPE) |
| public @interface <span class="strong">AspectService</span></pre> |
| <div class="block">Annotates an Aspect service. Aspects allow you to define an interceptor, or chain of interceptors |
| for a service (to add features like caching or logging, etc ...). The dependency manager intercepts |
| the original service, and allows you to execute some code before invoking the original service ... |
| The aspect will be applied to any service that matches the specified interface and filter and |
| will be registered with the same interface and properties as the original service, plus any |
| extra properties you supply here. It will also inherit all dependencies, |
| and if you declare the original service as a member it will be injected.<p> |
| |
| <h3>Usage Examples</h3> |
| |
| <p> Here, the AspectService is registered into the OSGI registry each time an InterceptedService |
| is found from the registry. The AspectService class intercepts the InterceptedService, and decorates |
| its "doWork()" method. This aspect uses a rank with value "10", meaning that it will intercept some |
| other eventual aspects with lower ranks. The Aspect also uses a service property (param=value), and |
| include eventual service properties found from the InterceptedService:<p> |
| <blockquote> |
| <pre> |
| |
| @AspectService(ranking=10), properties={@Property(name="param", value="value")}) |
| class AspectService implements InterceptedService { |
| // The service we are intercepting (injected by reflection) |
| protected InterceptedService intercepted; |
| |
| public void doWork() { |
| intercepted.doWork(); |
| } |
| } |
| </pre> |
| </blockquote></div> |
| </li> |
| </ul> |
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| <div class="summary"> |
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| <!-- =========== ANNOTATION TYPE REQUIRED MEMBER SUMMARY =========== --> |
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| <li class="blockList"><a name="annotation_type_required_element_summary"> |
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| </a> |
| <h3>Required Element Summary</h3> |
| <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Required Element Summary table, listing required elements, and an explanation"> |
| <caption><span>Required Elements</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Required Element and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../../org/apache/felix/dm/annotation/api/AspectService.html#ranking()">ranking</a></strong></code> |
| <div class="block">Sets the ranking of this aspect.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- =========== ANNOTATION TYPE OPTIONAL MEMBER SUMMARY =========== --> |
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| </a> |
| <h3>Optional Element Summary</h3> |
| <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Optional Element Summary table, listing optional elements, and an explanation"> |
| <caption><span>Optional Elements</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Optional Element and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>java.lang.String</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../../org/apache/felix/dm/annotation/api/AspectService.html#added()">added</a></strong></code> |
| <div class="block">The callback method to be invoked when the original service is available.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>java.lang.String</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../../org/apache/felix/dm/annotation/api/AspectService.html#changed()">changed</a></strong></code> |
| <div class="block">The callback method to be invoked when the original service properties have changed.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>java.lang.String</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../../org/apache/felix/dm/annotation/api/AspectService.html#factoryMethod()">factoryMethod</a></strong></code> |
| <div class="block">Sets the static method used to create the AspectService implementation instance.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>java.lang.String</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../../org/apache/felix/dm/annotation/api/AspectService.html#field()">field</a></strong></code> |
| <div class="block">Sets the field name where to inject the original service.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>java.lang.String</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../../org/apache/felix/dm/annotation/api/AspectService.html#filter()">filter</a></strong></code> |
| <div class="block">Sets the filter condition to use with the service interface this aspect is applying to.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../../org/apache/felix/dm/annotation/api/Property.html" title="annotation in org.apache.felix.dm.annotation.api">Property</a>[]</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../../org/apache/felix/dm/annotation/api/AspectService.html#properties()">properties</a></strong></code> |
| <div class="block">Sets Additional properties to use with the aspect service registration</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>java.lang.String</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../../org/apache/felix/dm/annotation/api/AspectService.html#removed()">removed</a></strong></code> |
| <div class="block">The callback method to invoke when the service is lost.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>java.lang.Class<?></code></td> |
| <td class="colLast"><code><strong><a href="../../../../../../org/apache/felix/dm/annotation/api/AspectService.html#service()">service</a></strong></code> |
| <div class="block">Sets the service interface to apply the aspect to.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>java.lang.String</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../../org/apache/felix/dm/annotation/api/AspectService.html#swap()">swap</a></strong></code> |
| <div class="block">name of the callback method to invoke on swap.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
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| <!-- ============ ANNOTATION TYPE MEMBER DETAIL =========== --> |
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| </a> |
| <h3>Element Detail</h3> |
| <a name="ranking()"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>ranking</h4> |
| <pre>public abstract int ranking</pre> |
| <div class="block">Sets the ranking of this aspect. Since aspects are chained, the ranking defines the order in which they are chained. |
| Chain ranking is implemented as a service ranking so service lookups automatically retrieve the top of the |
| chain.</div> |
| </li> |
| </ul> |
| <a name="service()"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>service</h4> |
| <pre>public abstract java.lang.Class<?> service</pre> |
| <div class="block">Sets the service interface to apply the aspect to. By default, the directly implemented interface is used.</div> |
| <dl> |
| <dt>Default:</dt> |
| <dd>java.lang.Object.class</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="filter()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>filter</h4> |
| <pre>public abstract java.lang.String filter</pre> |
| <div class="block">Sets the filter condition to use with the service interface this aspect is applying to.</div> |
| <dl> |
| <dt>Default:</dt> |
| <dd>""</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="properties()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>properties</h4> |
| <pre>public abstract <a href="../../../../../../org/apache/felix/dm/annotation/api/Property.html" title="annotation in org.apache.felix.dm.annotation.api">Property</a>[] properties</pre> |
| <div class="block">Sets Additional properties to use with the aspect service registration</div> |
| <dl> |
| <dt>Default:</dt> |
| <dd>{}</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="field()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>field</h4> |
| <pre>public abstract java.lang.String field</pre> |
| <div class="block">Sets the field name where to inject the original service. By default, the original service is injected |
| in any attributes in the aspect implementation that are of the same type as the aspect interface.</div> |
| <dl> |
| <dt>Default:</dt> |
| <dd>""</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="added()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>added</h4> |
| <pre>public abstract java.lang.String added</pre> |
| <div class="block">The callback method to be invoked when the original service is available. This attribute can't be mixed with |
| the field attribute.</div> |
| <dl> |
| <dt>Default:</dt> |
| <dd>""</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="changed()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>changed</h4> |
| <pre>public abstract java.lang.String changed</pre> |
| <div class="block">The callback method to be invoked when the original service properties have changed. When this attribute is used, |
| then the added attribute must also be used.</div> |
| <dl> |
| <dt>Default:</dt> |
| <dd>""</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="removed()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>removed</h4> |
| <pre>public abstract java.lang.String removed</pre> |
| <div class="block">The callback method to invoke when the service is lost. When this attribute is used, then the added attribute |
| must also be used.</div> |
| <dl> |
| <dt>Default:</dt> |
| <dd>""</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="swap()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>swap</h4> |
| <pre>public abstract java.lang.String swap</pre> |
| <div class="block">name of the callback method to invoke on swap.</div> |
| <dl> |
| <dt>Default:</dt> |
| <dd>""</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="factoryMethod()"> |
| <!-- --> |
| </a> |
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| <h4>factoryMethod</h4> |
| <pre>public abstract java.lang.String factoryMethod</pre> |
| <div class="block">Sets the static method used to create the AspectService implementation instance. The |
| default constructor of the annotated class is used. The factoryMethod can be used to provide a specific |
| aspect implements, like a DynamicProxy.</div> |
| <dl> |
| <dt>Default:</dt> |
| <dd>""</dd> |
| </dl> |
| </li> |
| </ul> |
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