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HashStats (Oracle - Berkeley DB Java API)
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<b>Berkeley DB</b><br><font size="-1"> version 5.3.28</font></EM>
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com.sleepycat.db</FONT>
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Class HashStats</H2>
<PRE>
<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A>
<IMG SRC="../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../com/sleepycat/db/DatabaseStats.html" title="class in com.sleepycat.db">com.sleepycat.db.DatabaseStats</A>
<IMG SRC="../../../resources/inherit.gif" ALT="extended by "><B>com.sleepycat.db.HashStats</B>
</PRE>
<HR>
<DL>
<DT><PRE>public class <B>HashStats</B><DT>extends <A HREF="../../../com/sleepycat/db/DatabaseStats.html" title="class in com.sleepycat.db">DatabaseStats</A></DL>
</PRE>
<P>
The HashStats object is used to return Hash database statistics.
<P>
<P>
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<!-- ========== METHOD SUMMARY =========== -->
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> long</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/HashStats.html#getBFree()">getBFree</A></B>()</CODE>
<BR>
The number of bytes free on bucket pages.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> long</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/HashStats.html#getBigBFree()">getBigBFree</A></B>()</CODE>
<BR>
The number of bytes free on big item pages.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/HashStats.html#getBigPages()">getBigPages</A></B>()</CODE>
<BR>
The number of big key/data pages.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/HashStats.html#getBuckets()">getBuckets</A></B>()</CODE>
<BR>
The the number of hash buckets.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/HashStats.html#getDup()">getDup</A></B>()</CODE>
<BR>
The number of duplicate pages.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> long</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/HashStats.html#getDupFree()">getDupFree</A></B>()</CODE>
<BR>
The number of bytes free on duplicate pages.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/HashStats.html#getFfactor()">getFfactor</A></B>()</CODE>
<BR>
The desired fill factor specified at database-creation time.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/HashStats.html#getFree()">getFree</A></B>()</CODE>
<BR>
The number of pages on the free list.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/HashStats.html#getMagic()">getMagic</A></B>()</CODE>
<BR>
The magic number that identifies the file as a Hash file.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/HashStats.html#getMetaFlags()">getMetaFlags</A></B>()</CODE>
<BR>
Reports internal flags.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/HashStats.html#getNumData()">getNumData</A></B>()</CODE>
<BR>
The number of key/data pairs in the database.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/HashStats.html#getNumKeys()">getNumKeys</A></B>()</CODE>
<BR>
The number of unique keys in the database.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/HashStats.html#getOverflows()">getOverflows</A></B>()</CODE>
<BR>
The number of overflow pages.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> long</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/HashStats.html#getOvflFree()">getOvflFree</A></B>()</CODE>
<BR>
The number of bytes free on overflow pages.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/HashStats.html#getPageCount()">getPageCount</A></B>()</CODE>
<BR>
The number of pages in the database.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/HashStats.html#getPageSize()">getPageSize</A></B>()</CODE>
<BR>
The underlying Hash database page (and bucket) size, in bytes.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/HashStats.html#getVersion()">getVersion</A></B>()</CODE>
<BR>
The version of the Hash database.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/HashStats.html#toString()">toString</A></B>()</CODE>
<BR>
For convenience, the HashStats class has a toString method
that lists all the data fields.</TD>
</TR>
</TABLE>
<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
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<TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></B></TH>
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<B>Method Detail</B></FONT></TH>
</TR>
</TABLE>
<A NAME="getMagic()"><!-- --></A><H3>
getMagic</H3>
<PRE>
public int <B>getMagic</B>()</PRE>
<DL>
<DD>The magic number that identifies the file as a Hash file.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getVersion()"><!-- --></A><H3>
getVersion</H3>
<PRE>
public int <B>getVersion</B>()</PRE>
<DL>
<DD>The version of the Hash database.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getMetaFlags()"><!-- --></A><H3>
getMetaFlags</H3>
<PRE>
public int <B>getMetaFlags</B>()</PRE>
<DL>
<DD>Reports internal flags. For internal use only.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getNumKeys()"><!-- --></A><H3>
getNumKeys</H3>
<PRE>
public int <B>getNumKeys</B>()</PRE>
<DL>
<DD>The number of unique keys in the database.
<p>
If the <A HREF="../../../com/sleepycat/db/Database.html#getStats(com.sleepycat.db.Transaction, com.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.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getNumData()"><!-- --></A><H3>
getNumData</H3>
<PRE>
public int <B>getNumData</B>()</PRE>
<DL>
<DD>The number of key/data pairs in the database.
<p>
If the <A HREF="../../../com/sleepycat/db/Database.html#getStats(com.sleepycat.db.Transaction, com.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.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getPageCount()"><!-- --></A><H3>
getPageCount</H3>
<PRE>
public int <B>getPageCount</B>()</PRE>
<DL>
<DD>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.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getPageSize()"><!-- --></A><H3>
getPageSize</H3>
<PRE>
public int <B>getPageSize</B>()</PRE>
<DL>
<DD>The underlying Hash database page (and bucket) size, in bytes.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getFfactor()"><!-- --></A><H3>
getFfactor</H3>
<PRE>
public int <B>getFfactor</B>()</PRE>
<DL>
<DD>The desired fill factor specified at database-creation time.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getBuckets()"><!-- --></A><H3>
getBuckets</H3>
<PRE>
public int <B>getBuckets</B>()</PRE>
<DL>
<DD>The the number of hash buckets.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getFree()"><!-- --></A><H3>
getFree</H3>
<PRE>
public int <B>getFree</B>()</PRE>
<DL>
<DD>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, com.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.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getBFree()"><!-- --></A><H3>
getBFree</H3>
<PRE>
public long <B>getBFree</B>()</PRE>
<DL>
<DD>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, com.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.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getBigPages()"><!-- --></A><H3>
getBigPages</H3>
<PRE>
public int <B>getBigPages</B>()</PRE>
<DL>
<DD>The number of big key/data pages.
<p>
The information is only included if the <A HREF="../../../com/sleepycat/db/Database.html#getStats(com.sleepycat.db.Transaction, com.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.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getBigBFree()"><!-- --></A><H3>
getBigBFree</H3>
<PRE>
public long <B>getBigBFree</B>()</PRE>
<DL>
<DD>The number of bytes free on big item pages.
<p>
The information is only included if the <A HREF="../../../com/sleepycat/db/Database.html#getStats(com.sleepycat.db.Transaction, com.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.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getOverflows()"><!-- --></A><H3>
getOverflows</H3>
<PRE>
public int <B>getOverflows</B>()</PRE>
<DL>
<DD>The number of overflow pages.
<p>
The information is only included if the <A HREF="../../../com/sleepycat/db/Database.html#getStats(com.sleepycat.db.Transaction, com.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.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getOvflFree()"><!-- --></A><H3>
getOvflFree</H3>
<PRE>
public long <B>getOvflFree</B>()</PRE>
<DL>
<DD>The number of bytes free on overflow pages.
<p>
The information is only included if the <A HREF="../../../com/sleepycat/db/Database.html#getStats(com.sleepycat.db.Transaction, com.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.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getDup()"><!-- --></A><H3>
getDup</H3>
<PRE>
public int <B>getDup</B>()</PRE>
<DL>
<DD>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, com.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.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getDupFree()"><!-- --></A><H3>
getDupFree</H3>
<PRE>
public long <B>getDupFree</B>()</PRE>
<DL>
<DD>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, com.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.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="toString()"><!-- --></A><H3>
toString</H3>
<PRE>
public <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>toString</B>()</PRE>
<DL>
<DD>For convenience, the HashStats class has a toString method
that lists all the data fields.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</A></CODE> in class <CODE><A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
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