public bool changeTSFSignalId(Guid? oldUuid, Guid newUuid)
{
int count;
bool hasSignal = false;
String sql = string.Format( "UPDATE {0} SET {1}=? WHERE {1}=?", TestSignalBean._TABLE_NAME,
TestSignalBean._ID );
OleDbParameter[] dbParams = { CreateParameter(TestSignalBean._ID, newUuid), CreateParameter(TestSignalBean._ID, oldUuid) };
ExecuteSqlCommand( sql, dbParams, out count );
return count == 1;
}