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LogCursor (Oracle - Berkeley DB Java API)
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<b>Berkeley DB</b><br><font size="-1"> version 4.7.25</font></EM>
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com.sleepycat.db</FONT>
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Class LogCursor</H2>
<PRE>
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">java.lang.Object</A>
<IMG SRC="../../../resources/inherit.gif" ALT="extended by "><B>com.sleepycat.db.LogCursor</B>
</PRE>
<HR>
<DL>
<DT><PRE>public class <B>LogCursor</B><DT>extends <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></DL>
</PRE>
<P>
The LogCursor object is the handle for a cursor into the log files,
supporting sequential access to the records stored in log files.
<p>
The handle is not free-threaded. Once the <A HREF="../../../com/sleepycat/db/LogCursor.html#close()"><CODE>LogCursor.close</CODE></A>
method is called, the handle may not be accessed again, regardless of
that method's success or failure.
<P>
<P>
<HR>
<P>
<!-- ========== METHOD SUMMARY =========== -->
<A NAME="method_summary"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
<B>Method Summary</B></FONT></TH>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/LogCursor.html#close()">close</A></B>()</CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../com/sleepycat/db/OperationStatus.html" title="class in com.sleepycat.db">OperationStatus</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/LogCursor.html#getCurrent(com.sleepycat.db.LogSequenceNumber, com.sleepycat.db.DatabaseEntry)">getCurrent</A></B>(<A HREF="../../../com/sleepycat/db/LogSequenceNumber.html" title="class in com.sleepycat.db">LogSequenceNumber</A> lsn,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> data)</CODE>
<BR>
Return the LogSequenceNumber and log record to which the log cursor
currently refers.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../com/sleepycat/db/OperationStatus.html" title="class in com.sleepycat.db">OperationStatus</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/LogCursor.html#getFirst(com.sleepycat.db.LogSequenceNumber, com.sleepycat.db.DatabaseEntry)">getFirst</A></B>(<A HREF="../../../com/sleepycat/db/LogSequenceNumber.html" title="class in com.sleepycat.db">LogSequenceNumber</A> lsn,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> data)</CODE>
<BR>
Return the first LogSequenceNumber and log record.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../com/sleepycat/db/OperationStatus.html" title="class in com.sleepycat.db">OperationStatus</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/LogCursor.html#getLast(com.sleepycat.db.LogSequenceNumber, com.sleepycat.db.DatabaseEntry)">getLast</A></B>(<A HREF="../../../com/sleepycat/db/LogSequenceNumber.html" title="class in com.sleepycat.db">LogSequenceNumber</A> lsn,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> data)</CODE>
<BR>
Return the last LogSequenceNumber and log record.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../com/sleepycat/db/OperationStatus.html" title="class in com.sleepycat.db">OperationStatus</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/LogCursor.html#getNext(com.sleepycat.db.LogSequenceNumber, com.sleepycat.db.DatabaseEntry)">getNext</A></B>(<A HREF="../../../com/sleepycat/db/LogSequenceNumber.html" title="class in com.sleepycat.db">LogSequenceNumber</A> lsn,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> data)</CODE>
<BR>
Return the next LogSequenceNumber and log record.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../com/sleepycat/db/OperationStatus.html" title="class in com.sleepycat.db">OperationStatus</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/LogCursor.html#getPrev(com.sleepycat.db.LogSequenceNumber, com.sleepycat.db.DatabaseEntry)">getPrev</A></B>(<A HREF="../../../com/sleepycat/db/LogSequenceNumber.html" title="class in com.sleepycat.db">LogSequenceNumber</A> lsn,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> data)</CODE>
<BR>
Return the previous LogSequenceNumber and log record.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../com/sleepycat/db/OperationStatus.html" title="class in com.sleepycat.db">OperationStatus</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/LogCursor.html#set(com.sleepycat.db.LogSequenceNumber, com.sleepycat.db.DatabaseEntry)">set</A></B>(<A HREF="../../../com/sleepycat/db/LogSequenceNumber.html" title="class in com.sleepycat.db">LogSequenceNumber</A> lsn,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> data)</CODE>
<BR>
Return a specific log record.</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/LogCursor.html#version()">version</A></B>()</CODE>
<BR>
Get the log file version.</TD>
</TR>
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<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://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
</TR>
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<P>
<!-- ============ METHOD DETAIL ========== -->
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<B>Method Detail</B></FONT></TH>
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<A NAME="close()"><!-- --></A><H3>
close</H3>
<PRE>
public void <B>close</B>()
throws <A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></PRE>
<DL>
<DD><DL>
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></CODE></DL>
</DD>
</DL>
<HR>
<A NAME="getCurrent(com.sleepycat.db.LogSequenceNumber, com.sleepycat.db.DatabaseEntry)"><!-- --></A><H3>
getCurrent</H3>
<PRE>
public <A HREF="../../../com/sleepycat/db/OperationStatus.html" title="class in com.sleepycat.db">OperationStatus</A> <B>getCurrent</B>(<A HREF="../../../com/sleepycat/db/LogSequenceNumber.html" title="class in com.sleepycat.db">LogSequenceNumber</A> lsn,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> data)
throws <A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></PRE>
<DL>
<DD>Return the LogSequenceNumber and log record to which the log cursor
currently refers.
<p>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>lsn</CODE> - The returned LogSequenceNumber.
<p><DD><CODE>data</CODE> - The returned log record. The data field is set to the record
retrieved, and the size field indicates the number of bytes in
the record.
<p>
<DT><B>Returns:</B><DD>The status of the operation.
<p>
<p>
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></CODE> - if a failure occurs.</DL>
</DD>
</DL>
<HR>
<A NAME="getNext(com.sleepycat.db.LogSequenceNumber, com.sleepycat.db.DatabaseEntry)"><!-- --></A><H3>
getNext</H3>
<PRE>
public <A HREF="../../../com/sleepycat/db/OperationStatus.html" title="class in com.sleepycat.db">OperationStatus</A> <B>getNext</B>(<A HREF="../../../com/sleepycat/db/LogSequenceNumber.html" title="class in com.sleepycat.db">LogSequenceNumber</A> lsn,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> data)
throws <A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></PRE>
<DL>
<DD>Return the next LogSequenceNumber and log record.
<p>
The current log position is advanced to the next record in the log,
and its LogSequenceNumber and data are returned. If the cursor has
not been initialized, the first available log record in the log will
be returned.
<p>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>lsn</CODE> - The returned LogSequenceNumber.
<p><DD><CODE>data</CODE> - The returned log record.
<p>
<DT><B>Returns:</B><DD>The status of the operation; a return of NOTFOUND indicates the last
log record has already been returned or the log is empty.
<p>
<p>
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></CODE> - if a failure occurs.</DL>
</DD>
</DL>
<HR>
<A NAME="getFirst(com.sleepycat.db.LogSequenceNumber, com.sleepycat.db.DatabaseEntry)"><!-- --></A><H3>
getFirst</H3>
<PRE>
public <A HREF="../../../com/sleepycat/db/OperationStatus.html" title="class in com.sleepycat.db">OperationStatus</A> <B>getFirst</B>(<A HREF="../../../com/sleepycat/db/LogSequenceNumber.html" title="class in com.sleepycat.db">LogSequenceNumber</A> lsn,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> data)
throws <A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></PRE>
<DL>
<DD>Return the first LogSequenceNumber and log record.
<p>
The current log position is set to the first record in the log,
and its LogSequenceNumber and data are returned.
<p>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>lsn</CODE> - The returned LogSequenceNumber.
<p><DD><CODE>data</CODE> - The returned log record.
<p>
<DT><B>Returns:</B><DD>The status of the operation; a return of NOTFOUND indicates the log
is empty.
<p>
<p>
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></CODE> - if a failure occurs.</DL>
</DD>
</DL>
<HR>
<A NAME="getLast(com.sleepycat.db.LogSequenceNumber, com.sleepycat.db.DatabaseEntry)"><!-- --></A><H3>
getLast</H3>
<PRE>
public <A HREF="../../../com/sleepycat/db/OperationStatus.html" title="class in com.sleepycat.db">OperationStatus</A> <B>getLast</B>(<A HREF="../../../com/sleepycat/db/LogSequenceNumber.html" title="class in com.sleepycat.db">LogSequenceNumber</A> lsn,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> data)
throws <A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></PRE>
<DL>
<DD>Return the last LogSequenceNumber and log record.
<p>
The current log position is set to the last record in the log,
and its LogSequenceNumber and data are returned.
<p>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>lsn</CODE> - The returned LogSequenceNumber.
<p><DD><CODE>data</CODE> - The returned log record.
<p>
<DT><B>Returns:</B><DD>The status of the operation; a return of NOTFOUND indicates the log
is empty.
<p>
<p>
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></CODE> - if a failure occurs.</DL>
</DD>
</DL>
<HR>
<A NAME="getPrev(com.sleepycat.db.LogSequenceNumber, com.sleepycat.db.DatabaseEntry)"><!-- --></A><H3>
getPrev</H3>
<PRE>
public <A HREF="../../../com/sleepycat/db/OperationStatus.html" title="class in com.sleepycat.db">OperationStatus</A> <B>getPrev</B>(<A HREF="../../../com/sleepycat/db/LogSequenceNumber.html" title="class in com.sleepycat.db">LogSequenceNumber</A> lsn,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> data)
throws <A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></PRE>
<DL>
<DD>Return the previous LogSequenceNumber and log record.
<p>
The current log position is advanced to the previous record in the log,
and its LogSequenceNumber and data are returned. If the cursor has
not been initialized, the last available log record in the log will
be returned.
<p>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>lsn</CODE> - The returned LogSequenceNumber.
<p><DD><CODE>data</CODE> - The returned log record.
<p>
<DT><B>Returns:</B><DD>The status of the operation; a return of NOTFOUND indicates the first
log record has already been returned or the log is empty.
<p>
<p>
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></CODE> - if a failure occurs.</DL>
</DD>
</DL>
<HR>
<A NAME="set(com.sleepycat.db.LogSequenceNumber, com.sleepycat.db.DatabaseEntry)"><!-- --></A><H3>
set</H3>
<PRE>
public <A HREF="../../../com/sleepycat/db/OperationStatus.html" title="class in com.sleepycat.db">OperationStatus</A> <B>set</B>(<A HREF="../../../com/sleepycat/db/LogSequenceNumber.html" title="class in com.sleepycat.db">LogSequenceNumber</A> lsn,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> data)
throws <A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></PRE>
<DL>
<DD>Return a specific log record.
<p>
The current log position is set to the specified record in the log,
and its data is returned.
<p>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>lsn</CODE> - The specified LogSequenceNumber.
<p><DD><CODE>data</CODE> - The returned log record.
<p>
<DT><B>Returns:</B><DD>The status of the operation.
<p>
<p>
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></CODE> - if a failure occurs.</DL>
</DD>
</DL>
<HR>
<A NAME="version()"><!-- --></A><H3>
version</H3>
<PRE>
public int <B>version</B>()
throws <A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></PRE>
<DL>
<DD>Get the log file version.
<p>
<P>
<DD><DL>
<DT><B>Returns:</B><DD>The log file version.
<p>
<p>
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></CODE> - if a failure occurs.</DL>
</DD>
</DL>
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<b>Berkeley DB</b><br><font size="-1"> version 4.7.25</font></EM>
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