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RecordNumberAppender (Sleepycat Software, Inc. - Berkeley DB Java API)
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com.sleepycat.db</FONT>
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Interface RecordNumberAppender</H2>
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<DT>public interface <B>RecordNumberAppender</B></DL>
<P>
An interface specifying a callback function that modifies stored data
based on a generated key.
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/RecordNumberAppender.html#appendRecordNumber(com.sleepycat.db.Database, com.sleepycat.db.DatabaseEntry, int)">appendRecordNumber</A></B>(<A HREF="../../../com/sleepycat/db/Database.html" title="class in com.sleepycat.db">Database</A> db,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> data,
int recno)</CODE>
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A callback function to modify the stored database based on the
generated key.</TD>
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<A NAME="appendRecordNumber(com.sleepycat.db.Database, com.sleepycat.db.DatabaseEntry, int)"><!-- --></A><H3>
appendRecordNumber</H3>
<PRE>
public void <B>appendRecordNumber</B>(<A HREF="../../../com/sleepycat/db/Database.html" title="class in com.sleepycat.db">Database</A> db,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> data,
int recno)
throws <A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></PRE>
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<DD>A callback function to modify the stored database based on the
generated key.
<p>
When storing records using <A HREF="../../../com/sleepycat/db/Database.html#append(com.sleepycat.db.Transaction, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry)"><CODE>Database.append</CODE></A> it may be
useful to modify the stored data based on the generated key.
This function will be called after the record number has been
selected, but before the data has been stored.
<p>
The callback function may modify the data <A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db"><CODE>DatabaseEntry</CODE></A>.
<p>
The callback function must throw a <A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db"><CODE>DatabaseException</CODE></A> object
to encapsulate the error on failure. That object will be thrown to
caller of <A HREF="../../../com/sleepycat/db/Database.html#append(com.sleepycat.db.Transaction, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry)"><CODE>Database.append</CODE></A>.
<p>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>db</CODE> - The enclosing database handle.
<p><DD><CODE>data</CODE> - The data to be stored.
<p><DD><CODE>recno</CODE> - The generated record number.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></CODE></DL>
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