EventHandler doesn't work

[Leonardo Antunes]

Hello,

I have to do a simple customization validation for the field PriceList in the order line table. If the field be equal 0, the client can't save the record. So, I create a new EventHandler as you can see in the code below, but the system never execute my class:

public class CompanyEventHandler extends AbstractEventHandler
{
    private static CLogger log = CLogger.getCLogger(CompanyEventHandler.class);
 
    //constants
    public static final String MESSAGE_PRICELIST_ZERO = "O valor do preço de lista não pode ser 0";

    protected void initialize()
    {
        registerEvent(IEventTopics.AFTER_LOGIN);

        registerTableEvent(IEventTopics.PO_BEFORE_CHANGE, MOrderLine.Table_Name);
        registerTableEvent(IEventTopics.PO_BEFORE_NEW, MOrderLine.Table_Name);
    }

    protected void doHandleEvent(Event event)
    {

        log.info("starting.. Topic :" + event.getTopic());

        if (event.getTopic().equals(IEventTopics.AFTER_LOGIN))
        {
            return;
        }


        PO po = getPO(event);

        if (po instanceof MOrderLine
            && (event.getTopic().equals(IEventTopics.PO_BEFORE_CHANGE) ||
                event.getTopic().equals(IEventTopics.PO_BEFORE_NEW)))
        {
            MOrderLine mOrderLine = (MOrderLine) po;
            if (mOrderLine.getPriceList().equals(new BigDecimal(0)))
            {
                throw new AdempiereException(MESSAGE_PRICELIST_ZERO);
            }
        }
    }
}

I put breakpoints in the beginning of the two methods and the system never execute the class. I follow the instructions of this tutorial https://www.youtube.com/watch?v=zc_Ye8WZ-jc without sucess. I would be greatful if someone can help me.

[Nicolas Micoud]

Hi,

Do you also create the Component Definition file (xml) ?
See: http://wiki.idempiere.org/en/Developing_Plug-Ins_-_Model_Events

Regards,

Nicolas

[Leonardo Antunes]

Thank you Nicolas,

The article helped me solve the problem. I forgot to tick the flag "Activate this plug-in when one of its classes is loaded" on the file MANIFEST.MF. After this, the problem was solved.