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<h2 title="Interface ServiceReferenceMetadata" class="title">Interface ServiceReferenceMetadata</h2>
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<dt>All Superinterfaces:</dt>
<dd><a href="../../../../../org/osgi/service/blueprint/reflect/ComponentMetadata.html" title="interface in org.osgi.service.blueprint.reflect">ComponentMetadata</a>, <a href="../../../../../org/osgi/service/blueprint/reflect/Metadata.html" title="interface in org.osgi.service.blueprint.reflect">Metadata</a>, <a href="../../../../../org/osgi/service/blueprint/reflect/NonNullMetadata.html" title="interface in org.osgi.service.blueprint.reflect">NonNullMetadata</a></dd>
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<dl>
<dt>All Known Subinterfaces:</dt>
<dd><a href="../../../../../org/osgi/service/blueprint/reflect/ReferenceListMetadata.html" title="interface in org.osgi.service.blueprint.reflect">ReferenceListMetadata</a>, <a href="../../../../../org/osgi/service/blueprint/reflect/ReferenceMetadata.html" title="interface in org.osgi.service.blueprint.reflect">ReferenceMetadata</a></dd>
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<pre>public interface <span class="typeNameLabel">ServiceReferenceMetadata</span>
extends <a href="../../../../../org/osgi/service/blueprint/reflect/ComponentMetadata.html" title="interface in org.osgi.service.blueprint.reflect">ComponentMetadata</a></pre>
<div class="block">Metadata for a reference to an OSGi service. This is the base type for
<a href="../../../../../org/osgi/service/blueprint/reflect/ReferenceListMetadata.html" title="interface in org.osgi.service.blueprint.reflect"><code>ReferenceListMetadata</code></a> and <a href="../../../../../org/osgi/service/blueprint/reflect/ReferenceMetadata.html" title="interface in org.osgi.service.blueprint.reflect"><code>ReferenceMetadata</code></a>.</div>
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<caption><span>Fields</span><span class="tabEnd"> </span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
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<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/osgi/service/blueprint/reflect/ServiceReferenceMetadata.html#AVAILABILITY_MANDATORY">AVAILABILITY_MANDATORY</a></span></code>
<div class="block">A matching service is required at all times.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/osgi/service/blueprint/reflect/ServiceReferenceMetadata.html#AVAILABILITY_OPTIONAL">AVAILABILITY_OPTIONAL</a></span></code>
<div class="block">A matching service is not required to be present.</div>
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<h3>Fields inherited from interface org.osgi.service.blueprint.reflect.<a href="../../../../../org/osgi/service/blueprint/reflect/ComponentMetadata.html" title="interface in org.osgi.service.blueprint.reflect">ComponentMetadata</a></h3>
<code><a href="../../../../../org/osgi/service/blueprint/reflect/ComponentMetadata.html#ACTIVATION_EAGER">ACTIVATION_EAGER</a>, <a href="../../../../../org/osgi/service/blueprint/reflect/ComponentMetadata.html#ACTIVATION_LAZY">ACTIVATION_LAZY</a></code></li>
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<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/osgi/service/blueprint/reflect/ServiceReferenceMetadata.html#getAvailability--">getAvailability</a></span>()</code>
<div class="block">Return whether or not a matching service is required at all times.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/osgi/service/blueprint/reflect/ServiceReferenceMetadata.html#getComponentName--">getComponentName</a></span>()</code>
<div class="block">Return the value of the <code>component-name</code> attribute of the service
reference.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/osgi/service/blueprint/reflect/ServiceReferenceMetadata.html#getFilter--">getFilter</a></span>()</code>
<div class="block">Return the filter expression that a matching service must match.</div>
</td>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code>java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/osgi/service/blueprint/reflect/ServiceReferenceMetadata.html#getInterface--">getInterface</a></span>()</code>
<div class="block">Return the name of the interface type that a matching service must
support.</div>
</td>
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<tr id="i4" class="altColor">
<td class="colFirst"><code>java.util.Collection<<a href="../../../../../org/osgi/service/blueprint/reflect/ReferenceListener.html" title="interface in org.osgi.service.blueprint.reflect">ReferenceListener</a>></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/osgi/service/blueprint/reflect/ServiceReferenceMetadata.html#getReferenceListeners--">getReferenceListeners</a></span>()</code>
<div class="block">Return the reference listeners to receive bind and unbind events.</div>
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<h3>Methods inherited from interface org.osgi.service.blueprint.reflect.<a href="../../../../../org/osgi/service/blueprint/reflect/ComponentMetadata.html" title="interface in org.osgi.service.blueprint.reflect">ComponentMetadata</a></h3>
<code><a href="../../../../../org/osgi/service/blueprint/reflect/ComponentMetadata.html#getActivation--">getActivation</a>, <a href="../../../../../org/osgi/service/blueprint/reflect/ComponentMetadata.html#getDependsOn--">getDependsOn</a>, <a href="../../../../../org/osgi/service/blueprint/reflect/ComponentMetadata.html#getId--">getId</a></code></li>
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<h4>AVAILABILITY_MANDATORY</h4>
<pre>static final int AVAILABILITY_MANDATORY</pre>
<div class="block">A matching service is required at all times.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../org/osgi/service/blueprint/reflect/ServiceReferenceMetadata.html#getAvailability--"><code>getAvailability()</code></a>,
<a href="../../../../../constant-values.html#org.osgi.service.blueprint.reflect.ServiceReferenceMetadata.AVAILABILITY_MANDATORY">Constant Field Values</a></dd>
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<h4>AVAILABILITY_OPTIONAL</h4>
<pre>static final int AVAILABILITY_OPTIONAL</pre>
<div class="block">A matching service is not required to be present.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../org/osgi/service/blueprint/reflect/ServiceReferenceMetadata.html#getAvailability--"><code>getAvailability()</code></a>,
<a href="../../../../../constant-values.html#org.osgi.service.blueprint.reflect.ServiceReferenceMetadata.AVAILABILITY_OPTIONAL">Constant Field Values</a></dd>
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<h4>getAvailability</h4>
<pre>int getAvailability()</pre>
<div class="block">Return whether or not a matching service is required at all times.
This is specified in the <code>availability</code> attribute of the service
reference.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Whether or not a matching service is required at all times.</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../org/osgi/service/blueprint/reflect/ServiceReferenceMetadata.html#AVAILABILITY_MANDATORY"><code>AVAILABILITY_MANDATORY</code></a>,
<a href="../../../../../org/osgi/service/blueprint/reflect/ServiceReferenceMetadata.html#AVAILABILITY_OPTIONAL"><code>AVAILABILITY_OPTIONAL</code></a></dd>
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<h4>getInterface</h4>
<pre>java.lang.String getInterface()</pre>
<div class="block">Return the name of the interface type that a matching service must
support.
This is specified in the <code>interface</code> attribute of the service
reference.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The name of the interface type that a matching service must
support or <code>null</code> when no interface name is specified.</dd>
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<pre>java.lang.String getComponentName()</pre>
<div class="block">Return the value of the <code>component-name</code> attribute of the service
reference. This specifies the id of a component that is registered in the
service registry. This will create an automatic filter, appended with the
filter if set, to select this component based on its automatic <code>id</code>
attribute.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
<dd>The value of the <code>component-name</code> attribute of the service
reference or <code>null</code> if the attribute is not specified.</dd>
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<h4>getFilter</h4>
<pre>java.lang.String getFilter()</pre>
<div class="block">Return the filter expression that a matching service must match.
This is specified by the <code>filter</code> attribute of the service
reference.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The filter expression that a matching service must match or
<code>null</code> if a filter is not specified.</dd>
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<h4>getReferenceListeners</h4>
<pre>java.util.Collection<<a href="../../../../../org/osgi/service/blueprint/reflect/ReferenceListener.html" title="interface in org.osgi.service.blueprint.reflect">ReferenceListener</a>> getReferenceListeners()</pre>
<div class="block">Return the reference listeners to receive bind and unbind events.
This is specified by the <code>reference-listener</code> elements of the
service reference.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>An immutable Collection of <a href="../../../../../org/osgi/service/blueprint/reflect/ReferenceListener.html" title="interface in org.osgi.service.blueprint.reflect"><code>ReferenceListener</code></a> objects to
receive bind and unbind events. The Collection is empty if no
reference listeners are specified for the service reference.</dd>
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