Re: from-outcome value

[Grigoras Cristinel]

Hi,

A better solution is to use custom navigation handler and the outcome 
string will make the name of view.
Like '/somepoz/somefile.jsp'.
In navigation handler you can check if the outcome string begin with "/" 
an set the view.
Is some example in wiki about navigation handler.
Cristi

David Delbecq wrote:
Hi,

This all looks to me a bit over-engineering and useless round cycling
(defining constants string reference that resolve to constant string
reference...)

Why could this pack of things:
<from-outcome>@OUTCOME.CONTINUE@</from-outcome>
public String someAction(){
   ...
   return outcomeUtils.getOutcoume("OUTCOME.CONTINUE");
}
outcome.properties:
OUTCOME.CONTINUE=continue
finally proceed thru a ant script to convert your file

in any way be better and more maintainable than this:
<from-outcome>OUTCOME.CONTINUE</from-outcome>
public String someAction(){
   return"OUTCOME.CONTINUE";
}

In both cases, you need OUTCOME.CONTINUE to be used inside your action
and inside your navigation-case. Then use it as your action return!

En l'instant précis du 12/21/06 14:52, Anil Kommareddi s'exprimait dans
toute sa noblesse:
  
Thanks Marco, that is exactly what we have been doing.
 
Here is one way that I thought of doing if anyone else is interested:
 
Define the outcomes in a properties file and use an ANT filterset to
use this properties file to replace the outcomes in the
faces-config.xml during the build process. To take your example, the
Outcomes class would contain a method like this:
 
*public* *static* String getOutcome(String id) {
    *return* /getResourceString/(ResourceUtils./TYPE_OUTCOMES/, id);
}
 
The navigation rule would look like this:

<navigation-case>
    <from-outcome>@OUTCOME.CONTINUE@</from-outcome>
    <to-view-id>/somepage.jsp</to-view-id>
</navigation-case>

and the Outcomes properties file will contain:
 
OUTCOME.CONTINUE=continue
 
While this works, if anyone has a more elegant solution, I would love
to see it.
 
Thanks for your response.
- Anil.

------------------------------------------------------------------------
*From:* Beelen, Marco [mailto:[EMAIL PROTECTED]
*Sent:* Thursday, December 21, 2006 4:01 AM
*To:* MyFaces Discussion
*Subject:* RE: from-outcome value

Anil,
 
There is no way you can specify the name of an outcome just once and
use a reference to it both in the java-code of your managed-bean and
the navigation-rules in your faces-config.xml. Since your
faces-config.xml doesn't get build or compile, there is no way to
garantee that the values used for outcomes are 'valid' and match the
String you use in the managed-bean.
 
For me it works fine to create a Outcomes-class which contains a set
of static final String for all outcomes I use through out the entire
application. It allows to reference to those outcomes in your
managed-bean and set JavaDoc on the outcome-constants to spefify the
String to use in the faces-config.xml.
 
public class Outcomes {
    /**
     * Outcome use to proceed to the next step in a wizard: "continue".
     */
    public static final String CONTINUE = "continue";
}
 
managed-bean:
 
public String someMethod() {
  return Outcomes.CONTINUE;
}
 
This doesn't prevent you from making mistakes and errors in typing the
value for from-outcome, but does offer you the possibility to re-use
your code better and made changes easier by allowing you to refactor
your code instead of performing 'global' search and replace-action on
your Strings used as outcomes.
 
With kind regards,
  Marco Beelen
 
 
 
 
 
 
 
 
------------------------------------------------------------------------
*From:* Anil Kommareddi [mailto:[EMAIL PROTECTED]
*Sent:* woensdag 20 december 2006 20:00
*To:* users@myfaces.apache.org
*Subject:* OT: from-outcome value

Folks,
Has anyone devised or know of a pattern to be able to use a reference
to a constant string or property file in the from-outcome tag of a
navigation-case instead of 'hardcoding' the actual string there?

My objective here is to maintain a common repository of outcomes
either in a class or property file and refer to them from both the
action method and the navigation case.

Thanks - Anil.
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