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| <div class="subTitle">org.apache.openjpa.instrumentation</div> |
| <h2 title="Interface DataCacheInstrument" class="title">Interface DataCacheInstrument</h2> |
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| <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="strong">DataCacheInstrument</span></pre> |
| <div class="block">Interface for providing instrumented data cache metrics and operations.</div> |
| </li> |
| </ul> |
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| <!-- ========== METHOD SUMMARY =========== --> |
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| <h3>Method Summary</h3> |
| <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span>Methods</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#cache(java.lang.String,%20boolean)">cache</a></strong>(<a href="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> className, |
| boolean enable)</code> |
| <div class="block">This method is used to enable/disable caching for the specified className.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#clear()">clear</a></strong>()</code> |
| <div class="block">Clears all data from the DataCache.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#collectStatistics(boolean)">collectStatistics</a></strong>(boolean enable)</code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#getCacheName()">getCacheName</a></strong>()</code> |
| <div class="block">Returns the name of the cache</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="http://download.oracle.com/javase/6/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,long[]></code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#getCacheStatistics()">getCacheStatistics</a></strong>()</code> |
| <div class="block">Returns the CacheStatistics for the cache.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#getHitCount()">getHitCount</a></strong>()</code> |
| <div class="block">Returns the hit count since cache statistics were last reset</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#getHitCount(java.lang.String)">getHitCount</a></strong>(<a href="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> 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 class="rowColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#getReadCount()">getReadCount</a></strong>()</code> |
| <div class="block">Returns the read count since cache statistics were last reset</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#getReadCount(java.lang.String)">getReadCount</a></strong>(<a href="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> className)</code> |
| <div class="block">Gets number of total read requests for the given class since last reset.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="http://download.oracle.com/javase/6/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#getStatisticsEnabled()">getStatisticsEnabled</a></strong>()</code> |
| <div class="block">Returns true if cache statistics are currently being calculated.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#getTotalHitCount()">getTotalHitCount</a></strong>()</code> |
| <div class="block">Returns the total hits since start.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#getTotalHitCount(java.lang.String)">getTotalHitCount</a></strong>(<a href="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> 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 class="altColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#getTotalReadCount()">getTotalReadCount</a></strong>()</code> |
| <div class="block">Returns the total reads since start.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#getTotalReadCount(java.lang.String)">getTotalReadCount</a></strong>(<a href="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> className)</code> |
| <div class="block">Gets number of total read requests for the given class since start.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#getTotalWriteCount()">getTotalWriteCount</a></strong>()</code> |
| <div class="block">Returns the total writes since start.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#getTotalWriteCount(java.lang.String)">getTotalWriteCount</a></strong>(<a href="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> className)</code> |
| <div class="block">Gets number of total write requests for the given class since start.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#getWriteCount()">getWriteCount</a></strong>()</code> |
| <div class="block">Returns the write count since cache statistics were last reset</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#getWriteCount(java.lang.String)">getWriteCount</a></strong>(<a href="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> className)</code> |
| <div class="block">Gets number of total write requests for the given class since last reset.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="http://download.oracle.com/javase/6/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="http://download.oracle.com/javase/6/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</a>></code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#listKnownTypes()">listKnownTypes</a></strong>()</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 class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#reset()">reset</a></strong>()</code> |
| <div class="block">Resets cache statistics</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="http://download.oracle.com/javase/6/docs/api/java/util/Date.html?is-external=true" title="class or interface in java.util">Date</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#sinceDate()">sinceDate</a></strong>()</code> |
| <div class="block">Returns date since cache statistics collection were last reset.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="http://download.oracle.com/javase/6/docs/api/java/util/Date.html?is-external=true" title="class or interface in java.util">Date</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/openjpa/instrumentation/DataCacheInstrument.html#startDate()">startDate</a></strong>()</code> |
| <div class="block">Returns date cache statistics collection started.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
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| <h3>Method Detail</h3> |
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| <h4>getReadCount</h4> |
| <pre>long getReadCount(<a href="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> className)</pre> |
| <div class="block">Gets number of total read requests for the given class since last reset.</div> |
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| <h4>getHitCount</h4> |
| <pre>long getHitCount(<a href="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> 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> |
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| <div class="block">Gets number of total write requests for the given class since last reset.</div> |
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| <pre>long getTotalReadCount(<a href="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> className)</pre> |
| <div class="block">Gets number of total read requests for the given class since start.</div> |
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| <pre>long getTotalHitCount(<a href="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> className)</pre> |
| <div class="block">Gets number of total read requests that has been found in cache for the given class since start.</div> |
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| <div class="block">Gets number of total write requests for the given class since start.</div> |
| </li> |
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| <a name="getCacheName()"> |
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| <pre><a href="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> getCacheName()</pre> |
| <div class="block">Returns the name of the cache</div> |
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| <h4>getHitCount</h4> |
| <pre>long getHitCount()</pre> |
| <div class="block">Returns the hit count since cache statistics were last reset</div> |
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| <pre>long getReadCount()</pre> |
| <div class="block">Returns the read count since cache statistics were last reset</div> |
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| <pre>long getTotalHitCount()</pre> |
| <div class="block">Returns the total hits since start.</div> |
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| <pre>long getTotalReadCount()</pre> |
| <div class="block">Returns the total reads since start.</div> |
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| <pre>long getTotalWriteCount()</pre> |
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| <pre>long getWriteCount()</pre> |
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| <h4>reset</h4> |
| <pre>void reset()</pre> |
| <div class="block">Resets cache statistics</div> |
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| <pre><a href="http://download.oracle.com/javase/6/docs/api/java/util/Date.html?is-external=true" title="class or interface in java.util">Date</a> sinceDate()</pre> |
| <div class="block">Returns date since cache statistics collection were last reset.</div> |
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| <h4>startDate</h4> |
| <pre><a href="http://download.oracle.com/javase/6/docs/api/java/util/Date.html?is-external=true" title="class or interface in java.util">Date</a> startDate()</pre> |
| <div class="block">Returns date cache statistics collection started.</div> |
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| <h4>listKnownTypes</h4> |
| <pre><a href="http://download.oracle.com/javase/6/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="http://download.oracle.com/javase/6/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</a>> 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> |
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| <h4>getStatisticsEnabled</h4> |
| <pre><a href="http://download.oracle.com/javase/6/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</a> getStatisticsEnabled()</pre> |
| <div class="block">Returns true if cache statistics are currently being calculated. False otherwise.</div> |
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| <h4>collectStatistics</h4> |
| <pre>void collectStatistics(boolean enable)</pre> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>enable</code> - - If true, the cache will start collecting statistics. Else cache statistics will not be collected.</dd></dl> |
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| <pre>void cache(<a href="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> className, |
| boolean enable)</pre> |
| <div class="block">This method is used to enable/disable caching for the specified className.</div> |
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| <h4>getCacheStatistics</h4> |
| <pre><a href="http://download.oracle.com/javase/6/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,long[]> 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> |
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| <h4>clear</h4> |
| <pre>void clear()</pre> |
| <div class="block">Clears all data from the DataCache.</div> |
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