On Tue, Sep 23, 2008 at 5:40 AM, Zied Hamdi <[EMAIL PROTECTED]> wrote:
> Hi all, > > Does the no answer to my mail mean "there's no answer"? :-) > Do you seen http://wiki.apache.org/myfaces/Handling_Server_Errors ? regards Leonardo Uribe > > Regards, > Zied > > 2008/9/22 Zied Hamdi <[EMAIL PROTECTED]> > > Hi all, >> >> I used to have in all my apps a "J2ee like" mecanism that defines two >> basic exceptions Business and System, where business messages include a i18n >> message and system one lead to an unconditional output. In a central place >> (eg. for struts it was the superclass of all actions), I organized my output >> against the exception type and message key. That way in my app I never had >> to to handle error presentation in my business logic (instead i was throwing >> general or sometimes specialized exceptions and handling that later (even in >> the application developement cycle)). >> >> Attemping to do the same with JSF I have a big problem there's no way to >> do it through standard JSF extentions, even more, the class I have to >> override depends on the specific implementation (it is not in the >> jsf-api.jar) eg. for the mojarra impl I have to overrride >> com.sun.faces.lifecycle.LifecycleImpl's execute method: >> >> public void execute(FacesContext context) throws FacesException { >> >> if (context == null) { >> throw new NullPointerException >> (MessageUtils.getExceptionMessageString >> (MessageUtils.NULL_PARAMETERS_ERROR_MESSAGE_ID, >> "context")); >> } >> >> if (LOGGER.isLoggable(Level.FINE)) { >> LOGGER.fine("execute(" + context + ")"); >> } >> >> for (int i = 1, len = phases.length -1 ; i < len; i++) { // Skip >> ANY_PHASE placeholder >> >> if (context.getRenderResponse() || >> context.getResponseComplete()) { >> break; >> } >> >> phases[i].doPhase(context, this, listeners.listIterator()); >> >> } >> >> } >> >> by surrounding it with a try-catch block that delegates exception handling >> to the class responsible for that (to add FacesMessage(s)). >> >> Then I have to rely on the classloader to find my class before the one in >> the jar with the same name. I think this is also transgrating the sun >> licence that allows me to use the classes as is. >> >> The procedure is similar with the myFaces implementation with the >> exception that the Apache licence lets me do this manipulation legally. (But >> I'm using JBoss wich bundles the RI so there's also work to do to switch >> implementations) >> >> All this is to ask if anoyone knows about a less acrobatic way to have the >> needed behavior. Notice that I want to use the same exceptions for >> validators and converters also that's why I intercept the overall phasis >> cycle rather than the com.sun.faces.lifecycle.InvokeApplicationPhase class. >> >> Also note that javax.faces.validator.DoubleRangeValidator (as an example) >> uses this same schema in conjunction with the javax.faces.component.UIInput >> that expects this type of exceptions and handles it specifically. I want to >> expand this schema to the whole application. >> >> >> Your help is very appreciated, I really don't want to get out of the >> standard procedure. >> >> Kind Regards, >> Zied >> >> -- >> Zied Hamdi >> www.into-i.fr >> (previously in 2003) >> zatreex.sf.net >> > > > > -- > Zied Hamdi > www.into-i.fr > (previously in 2003) > zatreex.sf.net >
