Implementing custom actions

ricardobacelar

Hi,

The document EMC Documentum xCelerated Composition Platform Version 1.6 Performance Tuning Guide, in pag 46, describe how optimize custom action preconditions for datagrid rendering, define scope values for action definitions that use the precondition.

I configure the <precondition> tag, but any change in relation the performance.

    <action id="transferirposse">

         <params>

             <param name="objectId" required="true" />

            </params>

          <preconditions>

             <precondition class="br.gov.bcb.ecm.pe.actions.generic.GenericIsControladorPrecondition" oneexecutiononly="true" />

            </preconditions>           

         </preconditions>

         ...

      </action>

I need help to configure the oneexecutiononly=’true’ attribute in the <precondition> tag.

Regrads,

gcampos

As stated in page 220 of Web Development Kit 6.6 Development Guide:

"Preconditions can affect application performance. For example, preconditions are called for each item in a list component. If there are 10 items and 20 applicable actions, 200 preconditions will be executed before the list is rendered. You can configure the application to test action preconditions only when they are executed instead of on page rendering by setting the onexecutiononly attribute of the precondition element to true."

That means: instead of your actions being evaluated on page rendering and being grayed out when they are invalid or disabled, they will be enabled and the validation will happen when user tries to call the action (i.e: in a menu or button).

You can probably let the evaluation happen on the execution, just check if the application will show a understandable message to the user.

Regards,

Gustavo

Message was edited by: Gustavo Campos