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<div class="aboutLanguage"><em><b>Berkeley DB</b><br><font size="-1"> version 6.1.29</font></em></div>
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<div class="subTitle">com.sleepycat.db</div>
<h2 title="Class HashStats" class="title">Class HashStats</h2>
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<ul class="inheritance">
<li>java.lang.Object</li>
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<li><a href="../../../com/sleepycat/db/DatabaseStats.html" title="class in com.sleepycat.db">com.sleepycat.db.DatabaseStats</a></li>
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<li>com.sleepycat.db.HashStats</li>
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<pre>public class <span class="strong">HashStats</span>
extends <a href="../../../com/sleepycat/db/DatabaseStats.html" title="class in com.sleepycat.db">DatabaseStats</a></pre>
<div class="block">The HashStats object is used to return Hash database statistics.</div>
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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>long</code></td>
<td class="colLast"><code><strong><a href="../../../com/sleepycat/db/HashStats.html#getBFree()">getBFree</a></strong>()</code>
<div class="block">The number of bytes free on bucket pages.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><strong><a href="../../../com/sleepycat/db/HashStats.html#getBigBFree()">getBigBFree</a></strong>()</code>
<div class="block">The number of bytes free on hash overflow (big item) pages.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../com/sleepycat/db/HashStats.html#getBigPages()">getBigPages</a></strong>()</code>
<div class="block">The number of hash overflow pages (created when key/data is too big for
the page).</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../com/sleepycat/db/HashStats.html#getBuckets()">getBuckets</a></strong>()</code>
<div class="block">The number of hash buckets.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../com/sleepycat/db/HashStats.html#getDup()">getDup</a></strong>()</code>
<div class="block">The number of duplicate pages.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><strong><a href="../../../com/sleepycat/db/HashStats.html#getDupFree()">getDupFree</a></strong>()</code>
<div class="block">The number of bytes free on duplicate pages.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../com/sleepycat/db/HashStats.html#getFfactor()">getFfactor</a></strong>()</code>
<div class="block">The desired fill factor specified at database-creation time.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../com/sleepycat/db/HashStats.html#getFree()">getFree</a></strong>()</code>
<div class="block">The number of pages on the free list.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../com/sleepycat/db/HashStats.html#getMagic()">getMagic</a></strong>()</code>
<div class="block">The magic number that identifies the file as a Hash file.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../com/sleepycat/db/HashStats.html#getMetaFlags()">getMetaFlags</a></strong>()</code>
<div class="block">Reports internal flags.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../com/sleepycat/db/HashStats.html#getNumBlobs()">getNumBlobs</a></strong>()</code>
<div class="block">The number of blob records.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../com/sleepycat/db/HashStats.html#getNumData()">getNumData</a></strong>()</code>
<div class="block">The number of key/data pairs in the database.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../com/sleepycat/db/HashStats.html#getNumKeys()">getNumKeys</a></strong>()</code>
<div class="block">The number of unique keys in the database.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../com/sleepycat/db/HashStats.html#getOverflows()">getOverflows</a></strong>()</code>
<div class="block">The number of bucket overflow pages (bucket overflow pages are created when
items did not fit on the main bucket page).</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><strong><a href="../../../com/sleepycat/db/HashStats.html#getOvflFree()">getOvflFree</a></strong>()</code>
<div class="block">The number of bytes free on bucket overflow pages.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../com/sleepycat/db/HashStats.html#getPageCount()">getPageCount</a></strong>()</code>
<div class="block">The number of pages in the database.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../com/sleepycat/db/HashStats.html#getPageSize()">getPageSize</a></strong>()</code>
<div class="block">The underlying Hash database page (and bucket) size, in bytes.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../com/sleepycat/db/HashStats.html#getVersion()">getVersion</a></strong>()</code>
<div class="block">The version of the Hash database.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../../com/sleepycat/db/HashStats.html#toString()">toString</a></strong>()</code>
<div class="block">For convenience, the HashStats class has a toString method
that lists all the data fields.</div>
</td>
</tr>
</table>
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<h3>Methods inherited from class java.lang.Object</h3>
<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait</code></li>
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<h3>Method Detail</h3>
<a name="getMagic()">
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<h4>getMagic</h4>
<pre>public int getMagic()</pre>
<div class="block">The magic number that identifies the file as a Hash file.</div>
</li>
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<a name="getVersion()">
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<h4>getVersion</h4>
<pre>public int getVersion()</pre>
<div class="block">The version of the Hash database.</div>
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<a name="getMetaFlags()">
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<h4>getMetaFlags</h4>
<pre>public int getMetaFlags()</pre>
<div class="block">Reports internal flags. For internal use only.</div>
</li>
</ul>
<a name="getNumKeys()">
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<h4>getNumKeys</h4>
<pre>public int getNumKeys()</pre>
<div class="block">The number of unique keys in the database.
<p>
If the <a href="../../../com/sleepycat/db/Database.html#getStats(com.sleepycat.db.Transaction,%20com.sleepycat.db.StatsConfig)"><code>Database.getStats</code></a> call was configured by the
<a href="../../../com/sleepycat/db/StatsConfig.html#setFast(boolean)"><code>StatsConfig.setFast</code></a> method, the count will be the last
saved value unless it has never been calculated, in which case it
will be 0.</div>
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<h4>getNumData</h4>
<pre>public int getNumData()</pre>
<div class="block">The number of key/data pairs in the database.
<p>
If the <a href="../../../com/sleepycat/db/Database.html#getStats(com.sleepycat.db.Transaction,%20com.sleepycat.db.StatsConfig)"><code>Database.getStats</code></a> call was configured by the
<a href="../../../com/sleepycat/db/StatsConfig.html#setFast(boolean)"><code>StatsConfig.setFast</code></a> method, the count will be the last
saved value unless it has never been calculated, in which case it
will be 0.</div>
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<h4>getNumBlobs</h4>
<pre>public int getNumBlobs()</pre>
<div class="block">The number of blob records.</div>
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<a name="getPageCount()">
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<h4>getPageCount</h4>
<pre>public int getPageCount()</pre>
<div class="block">The number of pages in the database.
<p>
Returned if <a href="../../../com/sleepycat/db/StatsConfig.html#setFast(boolean)"><code>StatsConfig.setFast(boolean)</code></a> was configured.</div>
</li>
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<a name="getPageSize()">
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<h4>getPageSize</h4>
<pre>public int getPageSize()</pre>
<div class="block">The underlying Hash database page (and bucket) size, in bytes.</div>
</li>
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<a name="getFfactor()">
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<h4>getFfactor</h4>
<pre>public int getFfactor()</pre>
<div class="block">The desired fill factor specified at database-creation time.</div>
</li>
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<a name="getBuckets()">
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<h4>getBuckets</h4>
<pre>public int getBuckets()</pre>
<div class="block">The number of hash buckets.</div>
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<a name="getFree()">
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<h4>getFree</h4>
<pre>public int getFree()</pre>
<div class="block">The number of pages on the free list.
<p>
The information is only included if the <a href="../../../com/sleepycat/db/Database.html#getStats(com.sleepycat.db.Transaction,%20com.sleepycat.db.StatsConfig)"><code>Database.getStats</code></a> call
was not configured by the <a href="../../../com/sleepycat/db/StatsConfig.html#setFast(boolean)"><code>StatsConfig.setFast</code></a> method.</div>
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<h4>getBFree</h4>
<pre>public long getBFree()</pre>
<div class="block">The number of bytes free on bucket pages.
<p>
The information is only included if the <a href="../../../com/sleepycat/db/Database.html#getStats(com.sleepycat.db.Transaction,%20com.sleepycat.db.StatsConfig)"><code>Database.getStats</code></a> call
was not configured by the <a href="../../../com/sleepycat/db/StatsConfig.html#setFast(boolean)"><code>StatsConfig.setFast</code></a> method.</div>
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<a name="getBigPages()">
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<h4>getBigPages</h4>
<pre>public int getBigPages()</pre>
<div class="block">The number of hash overflow pages (created when key/data is too big for
the page).
<p>
The information is only included if the <a href="../../../com/sleepycat/db/Database.html#getStats(com.sleepycat.db.Transaction,%20com.sleepycat.db.StatsConfig)"><code>Database.getStats</code></a> call
was not configured by the <a href="../../../com/sleepycat/db/StatsConfig.html#setFast(boolean)"><code>StatsConfig.setFast</code></a> method.</div>
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<h4>getBigBFree</h4>
<pre>public long getBigBFree()</pre>
<div class="block">The number of bytes free on hash overflow (big item) pages.
<p>
The information is only included if the <a href="../../../com/sleepycat/db/Database.html#getStats(com.sleepycat.db.Transaction,%20com.sleepycat.db.StatsConfig)"><code>Database.getStats</code></a> call
was not configured by the <a href="../../../com/sleepycat/db/StatsConfig.html#setFast(boolean)"><code>StatsConfig.setFast</code></a> method.</div>
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<h4>getOverflows</h4>
<pre>public int getOverflows()</pre>
<div class="block">The number of bucket overflow pages (bucket overflow pages are created when
items did not fit on the main bucket page).
<p>
The information is only included if the <a href="../../../com/sleepycat/db/Database.html#getStats(com.sleepycat.db.Transaction,%20com.sleepycat.db.StatsConfig)"><code>Database.getStats</code></a> call
was not configured by the <a href="../../../com/sleepycat/db/StatsConfig.html#setFast(boolean)"><code>StatsConfig.setFast</code></a> method.</div>
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<h4>getOvflFree</h4>
<pre>public long getOvflFree()</pre>
<div class="block">The number of bytes free on bucket overflow pages.
<p>
The information is only included if the <a href="../../../com/sleepycat/db/Database.html#getStats(com.sleepycat.db.Transaction,%20com.sleepycat.db.StatsConfig)"><code>Database.getStats</code></a> call
was not configured by the <a href="../../../com/sleepycat/db/StatsConfig.html#setFast(boolean)"><code>StatsConfig.setFast</code></a> method.</div>
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<h4>getDup</h4>
<pre>public int getDup()</pre>
<div class="block">The number of duplicate pages.
<p>
The information is only included if the <a href="../../../com/sleepycat/db/Database.html#getStats(com.sleepycat.db.Transaction,%20com.sleepycat.db.StatsConfig)"><code>Database.getStats</code></a> call
was not configured by the <a href="../../../com/sleepycat/db/StatsConfig.html#setFast(boolean)"><code>StatsConfig.setFast</code></a> method.</div>
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<h4>getDupFree</h4>
<pre>public long getDupFree()</pre>
<div class="block">The number of bytes free on duplicate pages.
<p>
The information is only included if the <a href="../../../com/sleepycat/db/Database.html#getStats(com.sleepycat.db.Transaction,%20com.sleepycat.db.StatsConfig)"><code>Database.getStats</code></a> call
was not configured by the <a href="../../../com/sleepycat/db/StatsConfig.html#setFast(boolean)"><code>StatsConfig.setFast</code></a> method.</div>
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<h4>toString</h4>
<pre>public java.lang.String toString()</pre>
<div class="block">For convenience, the HashStats class has a toString method
that lists all the data fields.</div>
<dl>
<dt><strong>Overrides:</strong></dt>
<dd><code>toString</code> in class <code>java.lang.Object</code></dd>
</dl>
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