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RecoveryOperation (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 RecoveryOperation</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.RecoveryOperation</B>
</PRE>
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<DL>
<DT><PRE>public final class <B>RecoveryOperation</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 recovery operation being performed when <A HREF="../../../com/sleepycat/db/LogRecordHandler.html#handleLogRecord(com.sleepycat.db.Environment, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.LogSequenceNumber, com.sleepycat.db.RecoveryOperation)"><CODE>LogRecordHandler.handleLogRecord</CODE></A> is called.
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<CODE>static <A HREF="../../../com/sleepycat/db/RecoveryOperation.html" title="class in com.sleepycat.db">RecoveryOperation</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/RecoveryOperation.html#ABORT">ABORT</A></B></CODE>
<BR>
The log is being read backward during a transaction abort; undo the
operation described by the log record.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static <A HREF="../../../com/sleepycat/db/RecoveryOperation.html" title="class in com.sleepycat.db">RecoveryOperation</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/RecoveryOperation.html#APPLY">APPLY</A></B></CODE>
<BR>
The log is being applied on a replica site; redo the operation
described by the log record.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static <A HREF="../../../com/sleepycat/db/RecoveryOperation.html" title="class in com.sleepycat.db">RecoveryOperation</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/RecoveryOperation.html#BACKWARD_ROLL">BACKWARD_ROLL</A></B></CODE>
<BR>
The log is being read backward to determine which transactions have
been committed and to abort those operations that were not; undo the
operation described by the log record.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static <A HREF="../../../com/sleepycat/db/RecoveryOperation.html" title="class in com.sleepycat.db">RecoveryOperation</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/RecoveryOperation.html#FORWARD_ROLL">FORWARD_ROLL</A></B></CODE>
<BR>
The log is being played forward; redo the operation described by the log
record.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static <A HREF="../../../com/sleepycat/db/RecoveryOperation.html" title="class in com.sleepycat.db">RecoveryOperation</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/RecoveryOperation.html#PRINT">PRINT</A></B></CODE>
<BR>
The log is being printed for debugging purposes; print the contents of
this log record in the desired format.</TD>
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<CODE>static <A HREF="../../../com/sleepycat/db/RecoveryOperation.html" title="class in com.sleepycat.db">RecoveryOperation</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/RecoveryOperation.html#fromFlag(int)">fromFlag</A></B>(int flag)</CODE>
<BR>
Internal: this is public only so it can be called from an internal
package.</TD>
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<CODE> <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/RecoveryOperation.html#toString()">toString</A></B>()</CODE>
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<A NAME="BACKWARD_ROLL"><!-- --></A><H3>
BACKWARD_ROLL</H3>
<PRE>
public static final <A HREF="../../../com/sleepycat/db/RecoveryOperation.html" title="class in com.sleepycat.db">RecoveryOperation</A> <B>BACKWARD_ROLL</B></PRE>
<DL>
<DD>The log is being read backward to determine which transactions have
been committed and to abort those operations that were not; undo the
operation described by the log record.
<P>
<DL>
</DL>
</DL>
<HR>
<A NAME="FORWARD_ROLL"><!-- --></A><H3>
FORWARD_ROLL</H3>
<PRE>
public static final <A HREF="../../../com/sleepycat/db/RecoveryOperation.html" title="class in com.sleepycat.db">RecoveryOperation</A> <B>FORWARD_ROLL</B></PRE>
<DL>
<DD>The log is being played forward; redo the operation described by the log
record.
<p>
The FORWARD_ROLL and APPLY operations frequently imply the same actions,
redoing changes that appear in the log record, although if a recovery
function is to be used on a replication client where reads may be taking
place concurrently with the processing of incoming messages, APPLY
operations should also perform appropriate locking.
<P>
<DL>
</DL>
</DL>
<HR>
<A NAME="ABORT"><!-- --></A><H3>
ABORT</H3>
<PRE>
public static final <A HREF="../../../com/sleepycat/db/RecoveryOperation.html" title="class in com.sleepycat.db">RecoveryOperation</A> <B>ABORT</B></PRE>
<DL>
<DD>The log is being read backward during a transaction abort; undo the
operation described by the log record.
<P>
<DL>
</DL>
</DL>
<HR>
<A NAME="APPLY"><!-- --></A><H3>
APPLY</H3>
<PRE>
public static final <A HREF="../../../com/sleepycat/db/RecoveryOperation.html" title="class in com.sleepycat.db">RecoveryOperation</A> <B>APPLY</B></PRE>
<DL>
<DD>The log is being applied on a replica site; redo the operation
described by the log record.
<p>
The FORWARD_ROLL and APPLY operations frequently imply the same actions,
redoing changes that appear in the log record, although if a recovery
function is to be used on a replication client where reads may be taking
place concurrently with the processing of incoming messages, APPLY
operations should also perform appropriate locking.
<P>
<DL>
</DL>
</DL>
<HR>
<A NAME="PRINT"><!-- --></A><H3>
PRINT</H3>
<PRE>
public static final <A HREF="../../../com/sleepycat/db/RecoveryOperation.html" title="class in com.sleepycat.db">RecoveryOperation</A> <B>PRINT</B></PRE>
<DL>
<DD>The log is being printed for debugging purposes; print the contents of
this log record in the desired format.
<P>
<DL>
</DL>
</DL>
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<A NAME="toString()"><!-- --></A><H3>
toString</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> <B>toString</B>()</PRE>
<DL>
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<P>
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<DT><B>Overrides:</B><DD><CODE><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></CODE> in class <CODE><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></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
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<HR>
<A NAME="fromFlag(int)"><!-- --></A><H3>
fromFlag</H3>
<PRE>
public static <A HREF="../../../com/sleepycat/db/RecoveryOperation.html" title="class in com.sleepycat.db">RecoveryOperation</A> <B>fromFlag</B>(int flag)</PRE>
<DL>
<DD>Internal: this is public only so it can be called from an internal
package.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>flag</CODE> - the internal flag value to be wrapped in a RecoveryException object</DL>
</DD>
</DL>
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