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https://issues.apache.org/jira/browse/TRINIDAD-2038?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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hongbing wang updated TRINIDAD-2038:
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Status: Patch Available (was: Open)
> Need new exception to know whether JSF needs to report the exception
> --------------------------------------------------------------------
>
> Key: TRINIDAD-2038
> URL: https://issues.apache.org/jira/browse/TRINIDAD-2038
> Project: MyFaces Trinidad
> Issue Type: Bug
> Affects Versions: 2.0.0-beta-1
> Reporter: hongbing wang
>
> There are cases that exception is thrown in update model phase, like model
> layer validation failure, by model outside of JSF and the exception is also
> handled and reported outside of JSF. To avoid the component's local value
> getting reset to null, JSF needs to be notified when it happens. The proposed
> solution is to re-throw a special exception to JSF notify it and also let JSF
> know whether it needs to report the exception.
> Here is the interface of the exception:
> package org.apache.myfaces.trinidad.context;
> /**
> * Interface for exceptions that tells whether the exception needs to be
> reported.
> * If an exception is thrown during JSF lifycycle and already reported, then
> it should let
> * JSF know not to report it again.
> *
> */
> public interface Reportable
> {
>
> /**
> * Return false if JSF doesn't need to report this exception, otherwise
> true.
> */
> public boolean isReportingMessage();
>
> }
> Update UIXEditableValue.updateModel(FacesContext context) to take advantage
> of this API as following
> public void updateModel(FacesContext context)
> {
> ...
> setValid(false);
> // don't report the exception if the exception is a Reportable instance
> and tells so
> boolean isReportingMessage = (e instanceof Reportable) ?
> ((Reportable) e).isReportingMessage() :
> true;
> if (isReportingMessage)
> {
> FacesMessage message = MessageFactory.getMessage(e);
> message = _wrapMessage(message);
> context.addMessage(getClientId(context), message);
> }
> }
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