ConversionException in Toplink TIMESTAMP mapping

Question

We have a column mapped in Toplink as java.sql.Timestamp. In order to make this work they've added a few lines to the toplink Oracle.xml file defining the timestamp type.
Inside JDeveloper this runs fine, however when run under Ant I get the following:
EXCEPTION [TOPLINK-3001] (TopLink - 9.0.3 (Build 423)): oracle.toplink.exceptions.ConversionException
EXCEPTION DESCRIPTION: The object [oracle.sql.TIMESTAMP@258], of class [class oracle.sql.TIMESTAMP], could not be converted to [class java.sql.Timestamp].
I've downloaded the newest JDBC drivers but the problem persists.
Anyone have some advice?

Answer 1

EXAMPLE CONVERSION MANAGER SOLUTION:
package example;
import java.sql.SQLException;
import java.sql.Timestamp;
import oracle.sql.*;
import oracle.toplink.exceptions.ConversionException;
import oracle.toplink.internal.helper.ConversionManager;
* Example conversion manager that will add the ability to convert Oracle9i DB's
* TIMESTAMP values into java.sql.Timestamp. This is required for TopLink
* 9.0.3 and 9.0.4.
* To use this class you must register the conversion manager prior to loading
* your project.
* <code>
* ConversionManager.setDefaultManager(new MyConversionManager());
* </code>
public class MyConversionManager extends ConversionManager {
private static final Class TIMESTAMP_TYPE = TIMESTAMP.class;
     protected Timestamp convertObjectToTimestamp(Object original) {
if (original.getClass() == TIMESTAMP_TYPE) {
try {
return ((TIMESTAMP) original).timestampValue();
} catch (SQLException se) {
throw ConversionException.couldNotBeConverted(original, Timestamp.class, se);
// NOTE: Similar check and comparisons could be done for TIMESTAMPTZ and TIMESTAMPLTZ
return super.convertObjectToTimestamp(original);
}