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| <li>Summary: </li> |
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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.calcite.avatica.metrics.noop</a></div> |
| <h2 title="Class NoopMetricsSystem" class="title">Class NoopMetricsSystem</h2> |
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| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
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| <ul class="inheritance"> |
| <li>org.apache.calcite.avatica.metrics.noop.NoopMetricsSystem</li> |
| </ul> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd><code><a href="../MetricsSystem.html" title="interface in org.apache.calcite.avatica.metrics">MetricsSystem</a></code></dd> |
| </dl> |
| <hr> |
| <pre>public class <span class="typeNameLabel">NoopMetricsSystem</span> |
| extends java.lang.Object |
| implements <a href="../MetricsSystem.html" title="interface in org.apache.calcite.avatica.metrics">MetricsSystem</a></pre> |
| <div class="block"><a href="../MetricsSystem.html" title="interface in org.apache.calcite.avatica.metrics"><code>MetricsSystem</code></a> implementation which does nothing. Returns <a href="../Metric.html" title="interface in org.apache.calcite.avatica.metrics"><code>Metric</code></a> implementations |
| which also does nothing (avoiding null instances).</div> |
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| <h3>Method Summary</h3> |
| <table class="memberSummary"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></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="colSecond" scope="col">Method</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code><a href="../Counter.html" title="interface in org.apache.calcite.avatica.metrics">Counter</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getCounter(java.lang.String)">getCounter</a></span>​(java.lang.String name)</code></th> |
| <td class="colLast"> |
| <div class="block">Get or construct a <a href="../Counter.html" title="interface in org.apache.calcite.avatica.metrics"><code>Counter</code></a> used to track a mutable number.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><a href="../Histogram.html" title="interface in org.apache.calcite.avatica.metrics">Histogram</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getHistogram(java.lang.String)">getHistogram</a></span>​(java.lang.String name)</code></th> |
| <td class="colLast"> |
| <div class="block">Get or construct a <a href="../Histogram.html" title="interface in org.apache.calcite.avatica.metrics"><code>Histogram</code></a> used to measure a distribution of values.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static <a href="NoopMetricsSystem.html" title="class in org.apache.calcite.avatica.metrics.noop">NoopMetricsSystem</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getInstance()">getInstance</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code><a href="../Meter.html" title="interface in org.apache.calcite.avatica.metrics">Meter</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getMeter(java.lang.String)">getMeter</a></span>​(java.lang.String name)</code></th> |
| <td class="colLast"> |
| <div class="block">Get or construct a <a href="../Meter.html" title="interface in org.apache.calcite.avatica.metrics"><code>Meter</code></a> used to measure durations and report distributions (a |
| combination of a <a href="../Timer.html" title="interface in org.apache.calcite.avatica.metrics"><code>Timer</code></a> and a <a href="../Histogram.html" title="interface in org.apache.calcite.avatica.metrics"><code>Histogram</code></a>.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code><a href="../Timer.html" title="interface in org.apache.calcite.avatica.metrics">Timer</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTimer(java.lang.String)">getTimer</a></span>​(java.lang.String name)</code></th> |
| <td class="colLast"> |
| <div class="block">Get or construct a <a href="../Timer.html" title="interface in org.apache.calcite.avatica.metrics"><code>Timer</code></a> used to measure durations and report rates.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code><T> void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#register(java.lang.String,org.apache.calcite.avatica.metrics.Gauge)">register</a></span>​(java.lang.String name, |
| <a href="../Gauge.html" title="interface in org.apache.calcite.avatica.metrics">Gauge</a><T> gauge)</code></th> |
| <td class="colLast"> |
| <div class="block">Register a <a href="../Gauge.html" title="interface in org.apache.calcite.avatica.metrics"><code>Gauge</code></a>.</div> |
| </td> |
| </tr> |
| </table> |
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| </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> |
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| </section> |
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| <h3>Method Detail</h3> |
| <a id="getInstance()"> |
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| <h4>getInstance</h4> |
| <pre class="methodSignature">public static <a href="NoopMetricsSystem.html" title="class in org.apache.calcite.avatica.metrics.noop">NoopMetricsSystem</a> getInstance()</pre> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>A <a href="NoopMetricsSystem.html" title="class in org.apache.calcite.avatica.metrics.noop"><code>NoopMetricsSystem</code></a> instance.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getTimer(java.lang.String)"> |
| <!-- --> |
| </a> |
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| <li class="blockList"> |
| <h4>getTimer</h4> |
| <pre class="methodSignature">public <a href="../Timer.html" title="interface in org.apache.calcite.avatica.metrics">Timer</a> getTimer​(java.lang.String name)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../MetricsSystem.html#getTimer(java.lang.String)">MetricsSystem</a></code></span></div> |
| <div class="block">Get or construct a <a href="../Timer.html" title="interface in org.apache.calcite.avatica.metrics"><code>Timer</code></a> used to measure durations and report rates.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../MetricsSystem.html#getTimer(java.lang.String)">getTimer</a></code> in interface <code><a href="../MetricsSystem.html" title="interface in org.apache.calcite.avatica.metrics">MetricsSystem</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>name</code> - The name of the Timer.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>An instance of <a href="../Timer.html" title="interface in org.apache.calcite.avatica.metrics"><code>Timer</code></a>.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getHistogram(java.lang.String)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getHistogram</h4> |
| <pre class="methodSignature">public <a href="../Histogram.html" title="interface in org.apache.calcite.avatica.metrics">Histogram</a> getHistogram​(java.lang.String name)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../MetricsSystem.html#getHistogram(java.lang.String)">MetricsSystem</a></code></span></div> |
| <div class="block">Get or construct a <a href="../Histogram.html" title="interface in org.apache.calcite.avatica.metrics"><code>Histogram</code></a> used to measure a distribution of values.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../MetricsSystem.html#getHistogram(java.lang.String)">getHistogram</a></code> in interface <code><a href="../MetricsSystem.html" title="interface in org.apache.calcite.avatica.metrics">MetricsSystem</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>name</code> - The name of the Histogram.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>An instance of <a href="../Histogram.html" title="interface in org.apache.calcite.avatica.metrics"><code>Histogram</code></a>.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getMeter(java.lang.String)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getMeter</h4> |
| <pre class="methodSignature">public <a href="../Meter.html" title="interface in org.apache.calcite.avatica.metrics">Meter</a> getMeter​(java.lang.String name)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../MetricsSystem.html#getMeter(java.lang.String)">MetricsSystem</a></code></span></div> |
| <div class="block">Get or construct a <a href="../Meter.html" title="interface in org.apache.calcite.avatica.metrics"><code>Meter</code></a> used to measure durations and report distributions (a |
| combination of a <a href="../Timer.html" title="interface in org.apache.calcite.avatica.metrics"><code>Timer</code></a> and a <a href="../Histogram.html" title="interface in org.apache.calcite.avatica.metrics"><code>Histogram</code></a>.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../MetricsSystem.html#getMeter(java.lang.String)">getMeter</a></code> in interface <code><a href="../MetricsSystem.html" title="interface in org.apache.calcite.avatica.metrics">MetricsSystem</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>name</code> - The name of the Meter.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>An instance of <a href="../Meter.html" title="interface in org.apache.calcite.avatica.metrics"><code>Meter</code></a>.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getCounter(java.lang.String)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getCounter</h4> |
| <pre class="methodSignature">public <a href="../Counter.html" title="interface in org.apache.calcite.avatica.metrics">Counter</a> getCounter​(java.lang.String name)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../MetricsSystem.html#getCounter(java.lang.String)">MetricsSystem</a></code></span></div> |
| <div class="block">Get or construct a <a href="../Counter.html" title="interface in org.apache.calcite.avatica.metrics"><code>Counter</code></a> used to track a mutable number.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../MetricsSystem.html#getCounter(java.lang.String)">getCounter</a></code> in interface <code><a href="../MetricsSystem.html" title="interface in org.apache.calcite.avatica.metrics">MetricsSystem</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>name</code> - The name of the Counter</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>An instance of <a href="../Counter.html" title="interface in org.apache.calcite.avatica.metrics"><code>Counter</code></a>.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="register(java.lang.String,org.apache.calcite.avatica.metrics.Gauge)"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>register</h4> |
| <pre class="methodSignature">public <T> void register​(java.lang.String name, |
| <a href="../Gauge.html" title="interface in org.apache.calcite.avatica.metrics">Gauge</a><T> gauge)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../MetricsSystem.html#register(java.lang.String,org.apache.calcite.avatica.metrics.Gauge)">MetricsSystem</a></code></span></div> |
| <div class="block">Register a <a href="../Gauge.html" title="interface in org.apache.calcite.avatica.metrics"><code>Gauge</code></a>. The Gauge will be invoked at a period defined by the implementation |
| of <a href="../MetricsSystem.html" title="interface in org.apache.calcite.avatica.metrics"><code>MetricsSystem</code></a>.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../MetricsSystem.html#register(java.lang.String,org.apache.calcite.avatica.metrics.Gauge)">register</a></code> in interface <code><a href="../MetricsSystem.html" title="interface in org.apache.calcite.avatica.metrics">MetricsSystem</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>name</code> - The name of the Gauge.</dd> |
| <dd><code>gauge</code> - A callback to compute the current value.</dd> |
| </dl> |
| </li> |
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| <li>Summary: </li> |
| <li>Nested | </li> |
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| <li><a href="#method.summary">Method</a></li> |
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