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<h1>Db.set_append_recno</h1>
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<h3><pre>
import com.sleepycat.db.*;
<p>
public interface DbAppendRecno
{
public abstract void db_append_recno(Db db, Dbt data, int recno);
throws DbException;
}
public class Db
{
public void set_append_recno(DbAppendRecno db_append_recno)
throws DbException;
...
}
</pre></h3>
<h1>Description</h1>
<p>When using the <a href="../../db4-devel-4.0.14/api_java/db_put.html#DB_APPEND">Db.DB_APPEND</a> option of the <a href="../../db4-devel-4.0.14/api_java/db_put.html">Db.put</a> method,
it may be useful to modify the stored data based on the generated key.
If a callback method is specified using the
Db.set_append_recno method, it will be called after the record number
has been selected, but before the data has been stored.
The callback function must throw a <a href="../../db4-devel-4.0.14/api_java/except_class.html">DbException</a> object to
encapsulate the error on failure. That object will be thrown to
caller of <a href="../../db4-devel-4.0.14/api_java/db_put.html">Db.put</a>.
<p>The called function must take three arguments: a reference to the
enclosing database handle; the data <a href="../../db4-devel-4.0.14/api_java/dbt_class.html">Dbt</a> to be stored; and the
selected record number. The called function may then modify the data
<a href="../../db4-devel-4.0.14/api_java/dbt_class.html">Dbt</a>.
<p>The Db.set_append_recno interface may be used only to configure Berkeley DB before
the <a href="../../db4-devel-4.0.14/api_java/db_open.html">Db.open</a> interface is called.
<p>The Db.set_append_recno method throws an exception that encapsulates a non-zero error value on
failure.
<h1>Class</h1>
<a href="../../db4-devel-4.0.14/api_java/dbenv_class.html">DbEnv</a>
<h1>See Also</h1>
<a href="../../db4-devel-4.0.14/api_java/env_close.html">DbEnv.close</a>,
<a href="../../db4-devel-4.0.14/api_java/env_version.html">DbEnv.get_version_string</a>,
<a href="../../db4-devel-4.0.14/api_java/env_open.html">DbEnv.open</a>,
<a href="../../db4-devel-4.0.14/api_java/env_remove.html">DbEnv.remove</a>,
<a href="../../db4-devel-4.0.14/api_java/env_set_cachesize.html">DbEnv.set_cachesize</a>,
<a href="../../db4-devel-4.0.14/api_java/env_set_data_dir.html">DbEnv.set_data_dir</a>,
<a href="../../db4-devel-4.0.14/api_java/env_set_errcall.html">DbEnv.set_errcall</a>,
<a href="../../db4-devel-4.0.14/api_java/env_set_error_stream.html">DbEnv.set_error_stream</a>,
<a href="../../db4-devel-4.0.14/api_java/env_set_errpfx.html">DbEnv.set_errpfx</a>,
<a href="../../db4-devel-4.0.14/api_java/env_set_feedback.html">DbEnv.set_feedback</a>,
<a href="../../db4-devel-4.0.14/api_java/env_set_flags.html">DbEnv.set_flags</a>,
<a href="../../db4-devel-4.0.14/api_java/env_set_rec_init.html">DbEnv.set_recovery_init</a>,
<a href="../../db4-devel-4.0.14/api_java/env_set_rpc_server.html">DbEnv.set_rpc_server</a>,
<a href="../../db4-devel-4.0.14/api_java/env_set_shm_key.html">DbEnv.set_shm_key</a>,
<a href="../../db4-devel-4.0.14/api_java/env_set_tas_spins.html">DbEnv.set_tas_spins</a>,
<a href="../../db4-devel-4.0.14/api_java/env_set_tmp_dir.html">DbEnv.set_tmp_dir</a>,
<a href="../../db4-devel-4.0.14/api_java/env_set_timeout.html">DbEnv.set_timeout</a>,
<a href="../../db4-devel-4.0.14/api_java/env_set_verbose.html">DbEnv.set_verbose</a>,
and <a href="../../db4-devel-4.0.14/api_java/env_strerror.html">DbEnv.strerror</a>.
</tt>
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