filer.html

jxta的api库

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<B>Method Detail</B></FONT></TD>
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<A NAME="readRecord(net.jxta.impl.xindice.core.data.Key)"><!-- --></A><H3>
readRecord</H3>
<PRE>
public <A HREF="../../../../../../net/jxta/impl/xindice/core/data/Record.html" title="class in net.jxta.impl.xindice.core.data">Record</A> <B>readRecord</B>(<A HREF="../../../../../../net/jxta/impl/xindice/core/data/Key.html" title="class in net.jxta.impl.xindice.core.data">Key</A>&nbsp;key)
                  throws <A HREF="../../../../../../net/jxta/impl/xindice/core/DBException.html" title="class in net.jxta.impl.xindice.core">DBException</A></PRE>
<DL>
<DD>readRecord returns a Record from the Filer based on the specified
 Key.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>key</CODE> - The Record's Key
<DT><B>Returns:</B><DD>The returned Record
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../../../net/jxta/impl/xindice/core/DBException.html" title="class in net.jxta.impl.xindice.core">DBException</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="readRecord(long)"><!-- --></A><H3>
readRecord</H3>
<PRE>
public <A HREF="../../../../../../net/jxta/impl/xindice/core/data/Record.html" title="class in net.jxta.impl.xindice.core.data">Record</A> <B>readRecord</B>(long&nbsp;pos)
                  throws <A HREF="../../../../../../net/jxta/impl/xindice/core/DBException.html" title="class in net.jxta.impl.xindice.core">DBException</A></PRE>
<DL>
<DD>readRecord returns a Record from the Filer at the specified
 position. The Record's Key will be set to null.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>pos</CODE> - The Record's position
<DT><B>Returns:</B><DD>The returned Record
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../../../net/jxta/impl/xindice/core/DBException.html" title="class in net.jxta.impl.xindice.core">DBException</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="writeRecord(net.jxta.impl.xindice.core.data.Key, net.jxta.impl.xindice.core.data.Value)"><!-- --></A><H3>
writeRecord</H3>
<PRE>
public long <B>writeRecord</B>(<A HREF="../../../../../../net/jxta/impl/xindice/core/data/Key.html" title="class in net.jxta.impl.xindice.core.data">Key</A>&nbsp;key,
                        <A HREF="../../../../../../net/jxta/impl/xindice/core/data/Value.html" title="class in net.jxta.impl.xindice.core.data">Value</A>&nbsp;value)
                 throws <A HREF="../../../../../../net/jxta/impl/xindice/core/DBException.html" title="class in net.jxta.impl.xindice.core">DBException</A></PRE>
<DL>
<DD>writeRecord writes a Value to the Filer based on the specified Key.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>key</CODE> - The Record's Key<DD><CODE>value</CODE> - The Record's Value
<DT><B>Returns:</B><DD>0 if the Record could not be written, the starting
 offset of the Record otherwise (used for indexing)
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../../../net/jxta/impl/xindice/core/DBException.html" title="class in net.jxta.impl.xindice.core">DBException</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="deleteRecord(net.jxta.impl.xindice.core.data.Key)"><!-- --></A><H3>
deleteRecord</H3>
<PRE>
public boolean <B>deleteRecord</B>(<A HREF="../../../../../../net/jxta/impl/xindice/core/data/Key.html" title="class in net.jxta.impl.xindice.core.data">Key</A>&nbsp;key)
                     throws <A HREF="../../../../../../net/jxta/impl/xindice/core/DBException.html" title="class in net.jxta.impl.xindice.core">DBException</A></PRE>
<DL>
<DD>deleteRecord removes a Record from the Filer based on the
 specified Key.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>key</CODE> - The Record's Key
<DT><B>Returns:</B><DD>Whether or not the Record was deleted
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../../../net/jxta/impl/xindice/core/DBException.html" title="class in net.jxta.impl.xindice.core">DBException</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="getRecordCount()"><!-- --></A><H3>
getRecordCount</H3>
<PRE>
public long <B>getRecordCount</B>()
                    throws <A HREF="../../../../../../net/jxta/impl/xindice/core/DBException.html" title="class in net.jxta.impl.xindice.core">DBException</A></PRE>
<DL>
<DD>getRecordCount returns the number of Records in the Filer.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>The Record count
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../../../net/jxta/impl/xindice/core/DBException.html" title="class in net.jxta.impl.xindice.core">DBException</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="getRecordSet()"><!-- --></A><H3>
getRecordSet</H3>
<PRE>
public <A HREF="../../../../../../net/jxta/impl/xindice/core/data/RecordSet.html" title="interface in net.jxta.impl.xindice.core.data">RecordSet</A> <B>getRecordSet</B>()
                       throws <A HREF="../../../../../../net/jxta/impl/xindice/core/DBException.html" title="class in net.jxta.impl.xindice.core">DBException</A></PRE>
<DL>
<DD>getRecordSet returns a RecordSet object for the current Filer.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>The Filer Enumerator
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../../../net/jxta/impl/xindice/core/DBException.html" title="class in net.jxta.impl.xindice.core">DBException</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="flush()"><!-- --></A><H3>
flush</H3>
<PRE>
public void <B>flush</B>()
           throws <A HREF="../../../../../../net/jxta/impl/xindice/core/DBException.html" title="class in net.jxta.impl.xindice.core">DBException</A></PRE>
<DL>
<DD>flush forcefully flushes any unwritten buffers to disk.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../../../net/jxta/impl/xindice/core/DBException.html" title="class in net.jxta.impl.xindice.core">DBException</A></CODE></DL>
</DD>
</DL>
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