/// <summary>
/// Fire Model Change.
/// Call modelChange method of added validators
/// </summary>
/// <param name="po">persistent objects</param>
/// <param name="changeType">ModalValidatorVariables.CHANGETYPE_*</param>
/// <returns>error message or NULL for no veto</returns>
public String FireModelChange(PO po, int changeType)
{
if (po == null || _modelChangeListeners.Count == 0)
{
return(null);
}
//
String propertyName = po.Get_TableName() + po.GetAD_Client_ID();
List <ModelValidator> list = null;
if (_modelChangeListeners.ContainsKey(propertyName))
{
list = new List <ModelValidator>();
list = _modelChangeListeners[propertyName];
}
if (list == null || list.Count == 0)
{
return(null);
}
//
for (int i = 0; i < list.Count; i++)
{
try
{
ModelValidator validator = (ModelValidator)list[i];
if (validator.GetAD_Client_ID() == po.GetAD_Client_ID())
{
String error = validator.ModelChange(po, changeType);
if (error != null && error.Length > 0)
{
return(error);
}
}
}
catch (Exception e)
{
String error = e.Message;
if (error == null)
{
error = e.ToString();
}
return(error);
}
}
return(null);
}