content/builds/3.1.2/apidocs/org/apache/openjpa/instrumentation/DataCacheInstrument.html - openjpa-site - Git at Google

 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 <!-- NewPage -->
 <html lang="de">
 <head>
 <!-- Generated by javadoc (1.8.0_252) on Thu Sep 03 11:54:23 CEST 2020 -->
 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>DataCacheInstrument (OpenJPA Parent POM 3.1.2 API)</title>
 <meta name="date" content="2020-09-03">
 <link rel="stylesheet" type="text/css" href="../../../../stylesheet.css" title="Style">
 <script type="text/javascript" src="../../../../script.js"></script>
 </head>
 <body>
 <script type="text/javascript"><!--
     try {
         if (location.href.indexOf('is-external=true') == -1) {
             parent.document.title="DataCacheInstrument (OpenJPA Parent POM 3.1.2 API)";
         }
     }
     catch(err) {
     }
 //-->
 var methods = {"i0":6,"i1":6,"i2":6,"i3":6,"i4":6,"i5":6,"i6":6,"i7":6,"i8":6,"i9":6,"i10":6,"i11":6,"i12":6,"i13":6,"i14":6,"i15":6,"i16":6,"i17":6,"i18":6,"i19":6,"i20":6,"i21":6};
 var tabs = {65535:["t0","All Methods"],2:["t2","Instance Methods"],4:["t3","Abstract Methods"]};
 var altColor = "altColor";
 var rowColor = "rowColor";
 var tableTab = "tableTab";
 var activeTableTab = "activeTableTab";
 </script>
 <noscript>
 <div>JavaScript is disabled on your browser.</div>
 </noscript>
 <!-- ========= START OF TOP NAVBAR ======= -->
 <div class="topNav"><a name="navbar.top">
 <!--   -->
 </a>
 <div class="skipNav"><a href="#skip.navbar.top" title="Skip navigation links">Skip navigation links</a></div>
 <a name="navbar.top.firstrow">
 <!--   -->
 </a>
 <ul class="navList" title="Navigation">
 <li><a href="../../../../overview-summary.html">Overview</a></li>
 <li><a href="package-summary.html">Package</a></li>
 <li class="navBarCell1Rev">Class</li>
 <li><a href="class-use/DataCacheInstrument.html">Use</a></li>
 <li><a href="package-tree.html">Tree</a></li>
 <li><a href="../../../../deprecated-list.html">Deprecated</a></li>
 <li><a href="../../../../index-all.html">Index</a></li>
 <li><a href="../../../../help-doc.html">Help</a></li>
 </ul>
 </div>
 <div class="subNav">
 <ul class="navList">
 <li><a href="../../../../org/apache/openjpa/instrumentation/AbstractQueryCacheInstrument.html" title="class in org.apache.openjpa.instrumentation"><span class="typeNameLink">Prev&nbsp;Class</span></a></li>
 <li><a href="../../../../org/apache/openjpa/instrumentation/InstrumentationManager.html" title="interface in org.apache.openjpa.instrumentation"><span class="typeNameLink">Next&nbsp;Class</span></a></li>
 </ul>
 <ul class="navList">
 <li><a href="../../../../index.html?org/apache/openjpa/instrumentation/DataCacheInstrument.html" target="_top">Frames</a></li>
 <li><a href="DataCacheInstrument.html" target="_top">No&nbsp;Frames</a></li>
 </ul>
 <ul class="navList" id="allclasses_navbar_top">
 <li><a href="../../../../allclasses-noframe.html">All&nbsp;Classes</a></li>
 </ul>
 <div>
 <script type="text/javascript"><!--
   allClassesLink = document.getElementById("allclasses_navbar_top");
   if(window==top) {
     allClassesLink.style.display = "block";
   }
   else {
     allClassesLink.style.display = "none";
   }
   //-->
 </script>
 </div>
 <div>
 <ul class="subNavList">
 <li>Summary:&nbsp;</li>
 <li>Nested&nbsp;|&nbsp;</li>
 <li>Field&nbsp;|&nbsp;</li>
 <li>Constr&nbsp;|&nbsp;</li>
 <li><a href="#method.summary">Method</a></li>
 </ul>
 <ul class="subNavList">
 <li>Detail:&nbsp;</li>
 <li>Field&nbsp;|&nbsp;</li>
 <li>Constr&nbsp;|&nbsp;</li>
 <li><a href="#method.detail">Method</a></li>
 </ul>
 </div>
 <a name="skip.navbar.top">
 <!--   -->
 </a></div>
 <!-- ========= END OF TOP NAVBAR ========= -->
 <!-- ======== START OF CLASS DATA ======== -->
 <div class="header">
 <div class="subTitle">org.apache.openjpa.instrumentation</div>
 <h2 title="Interface DataCacheInstrument" class="title">Interface DataCacheInstrument</h2>
 </div>
 <div class="contentContainer">
 <div class="description">
 <ul class="blockList">
 <li class="blockList">
 <dl>
 <dt>All Known Subinterfaces:</dt>
 <dd><a href="../../../../org/apache/openjpa/instrumentation/jmx/DataCacheJMXInstrumentMBean.html" title="interface in org.apache.openjpa.instrumentation.jmx">DataCacheJMXInstrumentMBean</a></dd>
 </dl>
 <dl>
 <dt>All Known Implementing Classes:</dt>
 <dd><a href="../../../../org/apache/openjpa/instrumentation/AbstractDataCacheInstrument.html" title="class in org.apache.openjpa.instrumentation">AbstractDataCacheInstrument</a>, <a href="../../../../org/apache/openjpa/instrumentation/jmx/DataCacheJMXInstrument.html" title="class in org.apache.openjpa.instrumentation.jmx">DataCacheJMXInstrument</a></dd>
 </dl>
 <hr>
 <br>
 <pre>public interface <span class="typeNameLabel">DataCacheInstrument</span></pre>
 <div class="block">Interface for providing instrumented data cache metrics and operations.</div>
 </li>
 </ul>
 </div>
 <div class="summary">
 <ul class="blockList">
 <li class="blockList">
 <!-- ========== 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">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd">&nbsp;</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/openjpa/instrumentation/DataCacheInstrument.html#cache-java.lang.String-boolean-">cache</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;className,
      boolean&nbsp;enable)</code>
 <div class="block">This method is used to enable/disable caching for the specified className.</div>
 </td>
 </tr>
 <tr id="i1" class="rowColor">
 <td class="colFirst"><code>void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#clear--">clear</a></span>()</code>
 <div class="block">Clears all data from the DataCache.</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/openjpa/instrumentation/DataCacheInstrument.html#collectStatistics-boolean-">collectStatistics</a></span>(boolean&nbsp;enable)</code>&nbsp;</td>
 </tr>
 <tr id="i3" class="rowColor">
 <td class="colFirst"><code><a href="https://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/openjpa/instrumentation/DataCacheInstrument.html#getCacheName--">getCacheName</a></span>()</code>
 <div class="block">Returns the name of the cache</div>
 </td>
 </tr>
 <tr id="i4" class="altColor">
 <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,long[]&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#getCacheStatistics--">getCacheStatistics</a></span>()</code>
 <div class="block">Returns the CacheStatistics for the cache.</div>
 </td>
 </tr>
 <tr id="i5" class="rowColor">
 <td class="colFirst"><code>long</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#getHitCount--">getHitCount</a></span>()</code>
 <div class="block">Returns the hit count since cache statistics were last reset</div>
 </td>
 </tr>
 <tr id="i6" class="altColor">
 <td class="colFirst"><code>long</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#getHitCount-java.lang.String-">getHitCount</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;className)</code>
 <div class="block">Gets number of total read requests that has been found in cache for the given class since last reset.</div>
 </td>
 </tr>
 <tr id="i7" class="rowColor">
 <td class="colFirst"><code>long</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#getReadCount--">getReadCount</a></span>()</code>
 <div class="block">Returns the read count since cache statistics were last reset</div>
 </td>
 </tr>
 <tr id="i8" class="altColor">
 <td class="colFirst"><code>long</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#getReadCount-java.lang.String-">getReadCount</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;className)</code>
 <div class="block">Gets number of total read requests for the given class since last reset.</div>
 </td>
 </tr>
 <tr id="i9" class="rowColor">
 <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#getStatisticsEnabled--">getStatisticsEnabled</a></span>()</code>
 <div class="block">Returns true if cache statistics are currently being calculated.</div>
 </td>
 </tr>
 <tr id="i10" class="altColor">
 <td class="colFirst"><code>long</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#getTotalHitCount--">getTotalHitCount</a></span>()</code>
 <div class="block">Returns the total hits since start.</div>
 </td>
 </tr>
 <tr id="i11" class="rowColor">
 <td class="colFirst"><code>long</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#getTotalHitCount-java.lang.String-">getTotalHitCount</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;className)</code>
 <div class="block">Gets number of total read requests that has been found in cache for the given class since start.</div>
 </td>
 </tr>
 <tr id="i12" class="altColor">
 <td class="colFirst"><code>long</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#getTotalReadCount--">getTotalReadCount</a></span>()</code>
 <div class="block">Returns the total reads since start.</div>
 </td>
 </tr>
 <tr id="i13" class="rowColor">
 <td class="colFirst"><code>long</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#getTotalReadCount-java.lang.String-">getTotalReadCount</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;className)</code>
 <div class="block">Gets number of total read requests for the given class since start.</div>
 </td>
 </tr>
 <tr id="i14" class="altColor">
 <td class="colFirst"><code>long</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#getTotalWriteCount--">getTotalWriteCount</a></span>()</code>
 <div class="block">Returns the total writes since start.</div>
 </td>
 </tr>
 <tr id="i15" class="rowColor">
 <td class="colFirst"><code>long</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#getTotalWriteCount-java.lang.String-">getTotalWriteCount</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;className)</code>
 <div class="block">Gets number of total write requests for the given class since start.</div>
 </td>
 </tr>
 <tr id="i16" class="altColor">
 <td class="colFirst"><code>long</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#getWriteCount--">getWriteCount</a></span>()</code>
 <div class="block">Returns the write count since cache statistics were last reset</div>
 </td>
 </tr>
 <tr id="i17" class="rowColor">
 <td class="colFirst"><code>long</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#getWriteCount-java.lang.String-">getWriteCount</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;className)</code>
 <div class="block">Gets number of total write requests for the given class since last reset.</div>
 </td>
 </tr>
 <tr id="i18" class="altColor">
 <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</a>&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#listKnownTypes--">listKnownTypes</a></span>()</code>
 <div class="block">Returns the names of classes that are known to the cache and whether or not they are currently being cached.</div>
 </td>
 </tr>
 <tr id="i19" class="rowColor">
 <td class="colFirst"><code>void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#reset--">reset</a></span>()</code>
 <div class="block">Resets cache statistics</div>
 </td>
 </tr>
 <tr id="i20" class="altColor">
 <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Date.html?is-external=true" title="class or interface in java.util">Date</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#sinceDate--">sinceDate</a></span>()</code>
 <div class="block">Returns date since cache statistics collection were last reset.</div>
 </td>
 </tr>
 <tr id="i21" class="rowColor">
 <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Date.html?is-external=true" title="class or interface in java.util">Date</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#startDate--">startDate</a></span>()</code>
 <div class="block">Returns date cache statistics collection started.</div>
 </td>
 </tr>
 </table>
 </li>
 </ul>
 </li>
 </ul>
 </div>
 <div class="details">
 <ul class="blockList">
 <li class="blockList">
 <!-- ============ METHOD DETAIL ========== -->
 <ul class="blockList">
 <li class="blockList"><a name="method.detail">
 <!--   -->
 </a>
 <h3>Method Detail</h3>
 <a name="getReadCount-java.lang.String-">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>getReadCount</h4>
 <pre>long&nbsp;getReadCount(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;className)</pre>
 <div class="block">Gets number of total read requests for the given class since last reset.</div>
 </li>
 </ul>
 <a name="getHitCount-java.lang.String-">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>getHitCount</h4>
 <pre>long&nbsp;getHitCount(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;className)</pre>
 <div class="block">Gets number of total read requests that has been found in cache for the given class since last reset.</div>
 </li>
 </ul>
 <a name="getWriteCount-java.lang.String-">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>getWriteCount</h4>
 <pre>long&nbsp;getWriteCount(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;className)</pre>
 <div class="block">Gets number of total write requests for the given class since last reset.</div>
 </li>
 </ul>
 <a name="getTotalReadCount-java.lang.String-">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>getTotalReadCount</h4>
 <pre>long&nbsp;getTotalReadCount(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;className)</pre>
 <div class="block">Gets number of total read requests for the given class since start.</div>
 </li>
 </ul>
 <a name="getTotalHitCount-java.lang.String-">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>getTotalHitCount</h4>
 <pre>long&nbsp;getTotalHitCount(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;className)</pre>
 <div class="block">Gets number of total read requests that has been found in cache for the given class since start.</div>
 </li>
 </ul>
 <a name="getTotalWriteCount-java.lang.String-">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>getTotalWriteCount</h4>
 <pre>long&nbsp;getTotalWriteCount(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;className)</pre>
 <div class="block">Gets number of total write requests for the given class since start.</div>
 </li>
 </ul>
 <a name="getCacheName--">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>getCacheName</h4>
 <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;getCacheName()</pre>
 <div class="block">Returns the name of the cache</div>
 </li>
 </ul>
 <a name="getHitCount--">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>getHitCount</h4>
 <pre>long&nbsp;getHitCount()</pre>
 <div class="block">Returns the hit count since cache statistics were last reset</div>
 </li>
 </ul>
 <a name="getReadCount--">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>getReadCount</h4>
 <pre>long&nbsp;getReadCount()</pre>
 <div class="block">Returns the read count since cache statistics were last reset</div>
 </li>
 </ul>
 <a name="getTotalHitCount--">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>getTotalHitCount</h4>
 <pre>long&nbsp;getTotalHitCount()</pre>
 <div class="block">Returns the total hits since start.</div>
 </li>
 </ul>
 <a name="getTotalReadCount--">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>getTotalReadCount</h4>
 <pre>long&nbsp;getTotalReadCount()</pre>
 <div class="block">Returns the total reads since start.</div>
 </li>
 </ul>
 <a name="getTotalWriteCount--">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>getTotalWriteCount</h4>
 <pre>long&nbsp;getTotalWriteCount()</pre>
 <div class="block">Returns the total writes since start.</div>
 </li>
 </ul>
 <a name="getWriteCount--">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>getWriteCount</h4>
 <pre>long&nbsp;getWriteCount()</pre>
 <div class="block">Returns the write count since cache statistics were last reset</div>
 </li>
 </ul>
 <a name="reset--">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>reset</h4>
 <pre>void&nbsp;reset()</pre>
 <div class="block">Resets cache statistics</div>
 </li>
 </ul>
 <a name="sinceDate--">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>sinceDate</h4>
 <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Date.html?is-external=true" title="class or interface in java.util">Date</a>&nbsp;sinceDate()</pre>
 <div class="block">Returns date since cache statistics collection were last reset.</div>
 </li>
 </ul>
 <a name="startDate--">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>startDate</h4>
 <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Date.html?is-external=true" title="class or interface in java.util">Date</a>&nbsp;startDate()</pre>
 <div class="block">Returns date cache statistics collection started.</div>
 </li>
 </ul>
 <a name="listKnownTypes--">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>listKnownTypes</h4>
 <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</a>&gt;&nbsp;listKnownTypes()</pre>
 <div class="block">Returns the names of classes that are known to the cache and whether or not they are currently being cached.</div>
 </li>
 </ul>
 <a name="getStatisticsEnabled--">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>getStatisticsEnabled</h4>
 <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</a>&nbsp;getStatisticsEnabled()</pre>
 <div class="block">Returns true if cache statistics are currently being calculated. False otherwise.</div>
 </li>
 </ul>
 <a name="collectStatistics-boolean-">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>collectStatistics</h4>
 <pre>void&nbsp;collectStatistics(boolean&nbsp;enable)</pre>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>enable</code> - - If true, the cache will start collecting statistics. Else cache statistics will not be collected.</dd>
 </dl>
 </li>
 </ul>
 <a name="cache-java.lang.String-boolean-">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>cache</h4>
 <pre>void&nbsp;cache(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;className,
            boolean&nbsp;enable)</pre>
 <div class="block">This method is used to enable/disable caching for the specified className.</div>
 </li>
 </ul>
 <a name="getCacheStatistics--">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>getCacheStatistics</h4>
 <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,long[]&gt;&nbsp;getCacheStatistics()</pre>
 <div class="block">Returns the CacheStatistics for the cache.
  The format for this map is:
   Type(String) => Enabled(Boolean),Read(Long),Hit(Long),Write(Long)</div>
 </li>
 </ul>
 <a name="clear--">
 <!--   -->
 </a>
 <ul class="blockListLast">
 <li class="blockList">
 <h4>clear</h4>
 <pre>void&nbsp;clear()</pre>
 <div class="block">Clears all data from the DataCache.</div>
 </li>
 </ul>
 </li>
 </ul>
 </li>
 </ul>
 </div>
 </div>
 <!-- ========= END OF CLASS DATA ========= -->
 <!-- ======= START OF BOTTOM NAVBAR ====== -->
 <div class="bottomNav"><a name="navbar.bottom">
 <!--   -->
 </a>
 <div class="skipNav"><a href="#skip.navbar.bottom" title="Skip navigation links">Skip navigation links</a></div>
 <a name="navbar.bottom.firstrow">
 <!--   -->
 </a>
 <ul class="navList" title="Navigation">
 <li><a href="../../../../overview-summary.html">Overview</a></li>
 <li><a href="package-summary.html">Package</a></li>
 <li class="navBarCell1Rev">Class</li>
 <li><a href="class-use/DataCacheInstrument.html">Use</a></li>
 <li><a href="package-tree.html">Tree</a></li>
 <li><a href="../../../../deprecated-list.html">Deprecated</a></li>
 <li><a href="../../../../index-all.html">Index</a></li>
 <li><a href="../../../../help-doc.html">Help</a></li>
 </ul>
 </div>
 <div class="subNav">
 <ul class="navList">
 <li><a href="../../../../org/apache/openjpa/instrumentation/AbstractQueryCacheInstrument.html" title="class in org.apache.openjpa.instrumentation"><span class="typeNameLink">Prev&nbsp;Class</span></a></li>
 <li><a href="../../../../org/apache/openjpa/instrumentation/InstrumentationManager.html" title="interface in org.apache.openjpa.instrumentation"><span class="typeNameLink">Next&nbsp;Class</span></a></li>
 </ul>
 <ul class="navList">
 <li><a href="../../../../index.html?org/apache/openjpa/instrumentation/DataCacheInstrument.html" target="_top">Frames</a></li>
 <li><a href="DataCacheInstrument.html" target="_top">No&nbsp;Frames</a></li>
 </ul>
 <ul class="navList" id="allclasses_navbar_bottom">
 <li><a href="../../../../allclasses-noframe.html">All&nbsp;Classes</a></li>
 </ul>
 <div>
 <script type="text/javascript"><!--
   allClassesLink = document.getElementById("allclasses_navbar_bottom");
   if(window==top) {
     allClassesLink.style.display = "block";
   }
   else {
     allClassesLink.style.display = "none";
   }
   //-->
 </script>
 </div>
 <div>
 <ul class="subNavList">
 <li>Summary:&nbsp;</li>
 <li>Nested&nbsp;|&nbsp;</li>
 <li>Field&nbsp;|&nbsp;</li>
 <li>Constr&nbsp;|&nbsp;</li>
 <li><a href="#method.summary">Method</a></li>
 </ul>
 <ul class="subNavList">
 <li>Detail:&nbsp;</li>
 <li>Field&nbsp;|&nbsp;</li>
 <li>Constr&nbsp;|&nbsp;</li>
 <li><a href="#method.detail">Method</a></li>
 </ul>
 </div>
 <a name="skip.navbar.bottom">
 <!--   -->
 </a></div>
 <!-- ======== END OF BOTTOM NAVBAR ======= -->
 <p class="legalCopy"><small>Copyright &#169; 2006&#x2013;2020 <a href="http://www.apache.org">Apache Software Foundation</a>. All rights reserved.</small></p>
 </body>
 </html>