Berkeley DB

Db.set_append_recno

						import com.sleepycat.db.*;
						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;
						...
						}
					

Description

When using the DB_APPEND option of the Db.put 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 DbException object to encapsulate the error on failure. That object will be thrown to caller of Db.put.

The called function must take ...