site/javadoc/r1.2.0/org/apache/edgent/streamscope/StreamScope.html - incubator-retired-edgent-website - Git at Google

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 <div class="subTitle">org.apache.edgent.streamscope</div>
 <h2 title="Class StreamScope" class="title">Class StreamScope&lt;T&gt;</h2>
 </div>
 <div class="contentContainer">
 <ul class="inheritance">
 <li><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li>
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 <li>org.apache.edgent.streamscope.StreamScope&lt;T&gt;</li>
 </ul>
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 <div class="description">
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 <dt><span class="paramLabel">Type Parameters:</span></dt>
 <dd><code>T</code> - Tuple type</dd>
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 <dl>
 <dt>All Implemented Interfaces:</dt>
 <dd><a href="http://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a>, <a href="../../../../org/apache/edgent/function/Consumer.html" title="interface in org.apache.edgent.function">Consumer</a>&lt;T&gt;</dd>
 </dl>
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 <br>
 <pre>public class <span class="typeNameLabel">StreamScope&lt;T&gt;</span>
 extends <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>
 implements <a href="../../../../org/apache/edgent/function/Consumer.html" title="interface in org.apache.edgent.function">Consumer</a>&lt;T&gt;</pre>
 <div class="block">A Stream "oscilloscope" for capturing stream tuples for analysis / debug.
  <P>
  A <code>StreamScope</code> is expected to be used as parameter to
  <a href="../../../../org/apache/edgent/streamscope/oplets/StreamScope.html" title="class in org.apache.edgent.streamscope.oplets"><code>StreamScope</code></a> oplet.
  </P><P>
  A <a href="../../../../org/apache/edgent/streamscope/StreamScope.TriggerManager.html" title="class in org.apache.edgent.streamscope"><code>StreamScope.TriggerManager</code></a> controls which tuples are captured.
  A <a href="../../../../org/apache/edgent/streamscope/StreamScope.BufferManager.html" title="class in org.apache.edgent.streamscope"><code>StreamScope.BufferManager</code></a> controls the retention policy for captured tuples.
  </P><P>
  A <a href="../../../../org/apache/edgent/streamscope/StreamScope.Sample.html" title="class in org.apache.edgent.streamscope"><code>StreamScope.Sample</code></a> is created for each captured tuple containing the tuple
  (not copied) and capture timestamps.  Samples are retrieved using <a href="../../../../org/apache/edgent/streamscope/StreamScope.html#getSamples--"><code>getSamples()</code></a>.
  </P><P>
  Sample capture can be enabled/disabled (<a href="../../../../org/apache/edgent/streamscope/StreamScope.html#setEnabled-boolean-"><code>setEnabled(boolean)</code></a>.
  It is disabled by default.  Capture can also be paused and resumed via
  the <code>TriggerManager</code>.
  </P><P>
  StreamScope instances are typically registered in and located via
  a <a href="../../../../org/apache/edgent/streamscope/StreamScopeRegistry.html" title="class in org.apache.edgent.streamscope"><code>StreamScopeRegistry</code></a> runtime service
  and <a href="../../../../org/apache/edgent/streamscope/mbeans/StreamScopeRegistryMXBean.html" title="interface in org.apache.edgent.streamscope.mbeans"><code>StreamScopeRegistryMXBean</code></a> runtime ControlService.
  </P></div>
 <dl>
 <dt><span class="seeLabel">See Also:</span></dt>
 <dd><a href="../../../../org/apache/edgent/streamscope/StreamScopeRegistry.html" title="class in org.apache.edgent.streamscope"><code>See {@code org.apache.edgent.providers.development.DevelopmentProvider}</code></a>,
 <a href="../../../../serialized-form.html#org.apache.edgent.streamscope.StreamScope">Serialized Form</a></dd>
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 <th class="colFirst" scope="col">Modifier and Type</th>
 <th class="colLast" scope="col">Class and Description</th>
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 <tr class="altColor">
 <td class="colFirst"><code>static class&nbsp;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/edgent/streamscope/StreamScope.BufferManager.html" title="class in org.apache.edgent.streamscope">StreamScope.BufferManager</a>&lt;<a href="../../../../org/apache/edgent/streamscope/StreamScope.BufferManager.html" title="type parameter in StreamScope.BufferManager">T</a>&gt;</span></code>
 <div class="block">Control the retention of captured tuples.</div>
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 <tr class="rowColor">
 <td class="colFirst"><code>static class&nbsp;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/edgent/streamscope/StreamScope.Sample.html" title="class in org.apache.edgent.streamscope">StreamScope.Sample</a>&lt;<a href="../../../../org/apache/edgent/streamscope/StreamScope.Sample.html" title="type parameter in StreamScope.Sample">T</a>&gt;</span></code>
 <div class="block">A captured tuple.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>static class&nbsp;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/edgent/streamscope/StreamScope.TriggerManager.html" title="class in org.apache.edgent.streamscope">StreamScope.TriggerManager</a>&lt;<a href="../../../../org/apache/edgent/streamscope/StreamScope.TriggerManager.html" title="type parameter in StreamScope.TriggerManager">T</a>&gt;</span></code>
 <div class="block">Control what triggers capturing of tuples.</div>
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 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/edgent/streamscope/StreamScope.html#StreamScope--">StreamScope</a></span>()</code>
 <div class="block">Create a new instance.</div>
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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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 <tr id="i0" class="altColor">
 <td class="colFirst"><code>void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/edgent/streamscope/StreamScope.html#accept-T-">accept</a></span>(<a href="../../../../org/apache/edgent/streamscope/StreamScope.html" title="type parameter in StreamScope">T</a>&nbsp;tuple)</code>
 <div class="block">Apply the function to <code>value</code>.</div>
 </td>
 </tr>
 <tr id="i1" class="rowColor">
 <td class="colFirst"><code><a href="../../../../org/apache/edgent/streamscope/StreamScope.BufferManager.html" title="class in org.apache.edgent.streamscope">StreamScope.BufferManager</a>&lt;<a href="../../../../org/apache/edgent/streamscope/StreamScope.html" title="type parameter in StreamScope">T</a>&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/edgent/streamscope/StreamScope.html#bufferMgr--">bufferMgr</a></span>()</code>
 <div class="block">Get the <a href="../../../../org/apache/edgent/streamscope/StreamScope.BufferManager.html" title="class in org.apache.edgent.streamscope"><code>StreamScope.BufferManager</code></a></div>
 </td>
 </tr>
 <tr id="i2" class="altColor">
 <td class="colFirst"><code>int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/edgent/streamscope/StreamScope.html#getSampleCount--">getSampleCount</a></span>()</code>
 <div class="block">Get the number of Samples currently captured</div>
 </td>
 </tr>
 <tr id="i3" class="rowColor">
 <td class="colFirst"><code><a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../org/apache/edgent/streamscope/StreamScope.Sample.html" title="class in org.apache.edgent.streamscope">StreamScope.Sample</a>&lt;<a href="../../../../org/apache/edgent/streamscope/StreamScope.html" title="type parameter in StreamScope">T</a>&gt;&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/edgent/streamscope/StreamScope.html#getSamples--">getSamples</a></span>()</code>
 <div class="block">Get all captured tuples.</div>
 </td>
 </tr>
 <tr id="i4" class="altColor">
 <td class="colFirst"><code>boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/edgent/streamscope/StreamScope.html#isEnabled--">isEnabled</a></span>()</code>
 <div class="block">Is tuple capture enabled?</div>
 </td>
 </tr>
 <tr id="i5" class="rowColor">
 <td class="colFirst"><code>void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/edgent/streamscope/StreamScope.html#setEnabled-boolean-">setEnabled</a></span>(boolean&nbsp;isEnabled)</code>
 <div class="block">Enable or disable tuple capture.</div>
 </td>
 </tr>
 <tr id="i6" class="altColor">
 <td class="colFirst"><code><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/edgent/streamscope/StreamScope.html#toString--">toString</a></span>()</code>&nbsp;</td>
 </tr>
 <tr id="i7" class="rowColor">
 <td class="colFirst"><code><a href="../../../../org/apache/edgent/streamscope/StreamScope.TriggerManager.html" title="class in org.apache.edgent.streamscope">StreamScope.TriggerManager</a>&lt;<a href="../../../../org/apache/edgent/streamscope/StreamScope.html" title="type parameter in StreamScope">T</a>&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/edgent/streamscope/StreamScope.html#triggerMgr--">triggerMgr</a></span>()</code>
 <div class="block">Get the <a href="../../../../org/apache/edgent/streamscope/StreamScope.TriggerManager.html" title="class in org.apache.edgent.streamscope"><code>StreamScope.TriggerManager</code></a></div>
 </td>
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 <h3>Methods inherited from class&nbsp;java.lang.<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
 <code><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li>
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 <!-- ========= CONSTRUCTOR DETAIL ======== -->
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 <li class="blockList"><a name="constructor.detail">
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 <h3>Constructor Detail</h3>
 <a name="StreamScope--">
 <!--   -->
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 <ul class="blockListLast">
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 <h4>StreamScope</h4>
 <pre>public&nbsp;StreamScope()</pre>
 <div class="block">Create a new instance.
  <P>
  Sample capture is disabled.
  </P></div>
 </li>
 </ul>
 </li>
 </ul>
 <!-- ============ METHOD DETAIL ========== -->
 <ul class="blockList">
 <li class="blockList"><a name="method.detail">
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 <h3>Method Detail</h3>
 <a name="isEnabled--">
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 <h4>isEnabled</h4>
 <pre>public&nbsp;boolean&nbsp;isEnabled()</pre>
 <div class="block">Is tuple capture enabled?</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>true if enabled.</dd>
 </dl>
 </li>
 </ul>
 <a name="setEnabled-boolean-">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>setEnabled</h4>
 <pre>public&nbsp;void&nbsp;setEnabled(boolean&nbsp;isEnabled)</pre>
 <div class="block">Enable or disable tuple capture.
  <P>
  Disabling releases the capture buffer.
  </P></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>isEnabled</code> - true to enable, false to disable.</dd>
 </dl>
 </li>
 </ul>
 <a name="bufferMgr--">
 <!--   -->
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 <h4>bufferMgr</h4>
 <pre>public&nbsp;<a href="../../../../org/apache/edgent/streamscope/StreamScope.BufferManager.html" title="class in org.apache.edgent.streamscope">StreamScope.BufferManager</a>&lt;<a href="../../../../org/apache/edgent/streamscope/StreamScope.html" title="type parameter in StreamScope">T</a>&gt;&nbsp;bufferMgr()</pre>
 <div class="block">Get the <a href="../../../../org/apache/edgent/streamscope/StreamScope.BufferManager.html" title="class in org.apache.edgent.streamscope"><code>StreamScope.BufferManager</code></a></div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the manager</dd>
 </dl>
 </li>
 </ul>
 <a name="triggerMgr--">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>triggerMgr</h4>
 <pre>public&nbsp;<a href="../../../../org/apache/edgent/streamscope/StreamScope.TriggerManager.html" title="class in org.apache.edgent.streamscope">StreamScope.TriggerManager</a>&lt;<a href="../../../../org/apache/edgent/streamscope/StreamScope.html" title="type parameter in StreamScope">T</a>&gt;&nbsp;triggerMgr()</pre>
 <div class="block">Get the <a href="../../../../org/apache/edgent/streamscope/StreamScope.TriggerManager.html" title="class in org.apache.edgent.streamscope"><code>StreamScope.TriggerManager</code></a></div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the manager</dd>
 </dl>
 </li>
 </ul>
 <a name="getSamples--">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>getSamples</h4>
 <pre>public&nbsp;<a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../org/apache/edgent/streamscope/StreamScope.Sample.html" title="class in org.apache.edgent.streamscope">StreamScope.Sample</a>&lt;<a href="../../../../org/apache/edgent/streamscope/StreamScope.html" title="type parameter in StreamScope">T</a>&gt;&gt;&nbsp;getSamples()</pre>
 <div class="block">Get all captured tuples.
  <P>
  The returned samples are removed from the capture buffer.
  </P></div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>unmodifiable list of captured samples</dd>
 </dl>
 </li>
 </ul>
 <a name="getSampleCount--">
 <!--   -->
 </a>
 <ul class="blockList">
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 <h4>getSampleCount</h4>
 <pre>public&nbsp;int&nbsp;getSampleCount()</pre>
 <div class="block">Get the number of Samples currently captured</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the count</dd>
 </dl>
 </li>
 </ul>
 <a name="accept-java.lang.Object-">
 <!--   -->
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 <h4>accept</h4>
 <pre>public&nbsp;void&nbsp;accept(<a href="../../../../org/apache/edgent/streamscope/StreamScope.html" title="type parameter in StreamScope">T</a>&nbsp;tuple)</pre>
 <div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../org/apache/edgent/function/Consumer.html#accept-T-">Consumer</a></code></span></div>
 <div class="block">Apply the function to <code>value</code>.</div>
 <dl>
 <dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
 <dd><code><a href="../../../../org/apache/edgent/function/Consumer.html#accept-T-">accept</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../org/apache/edgent/function/Consumer.html" title="interface in org.apache.edgent.function">Consumer</a>&lt;<a href="../../../../org/apache/edgent/streamscope/StreamScope.html" title="type parameter in StreamScope">T</a>&gt;</code></dd>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>tuple</code> - Value function is applied to.</dd>
 </dl>
 </li>
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 <a name="toString--">
 <!--   -->
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 <h4>toString</h4>
 <pre>public&nbsp;<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;toString()</pre>
 <dl>
 <dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
 <dd><code><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a></code>&nbsp;in class&nbsp;<code><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></dd>
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