public Object extractPrimaryKeyFromInstance(CmpEntityBeanContext ctx) {
try {
Object pk = null;
for (int i = 0; i < primaryKeyFields.length; ++i) {
JDBCCMPFieldBridge pkField = primaryKeyFields[i];
Object fieldValue = pkField.getInstanceValue(ctx);
// updated pk object with return form set primary key value to
// handle single valued non-composite pks and more complicated behivors.
pk = pkField.setPrimaryKeyValue(pk, fieldValue);
}
return pk;
} catch (EJBException e) {
// to avoid double wrap of EJBExceptions
throw e;
} catch (Exception e) {
// Non recoverable internal exception
throw MESSAGES.errorExtractingPk(e);
}
}
