[ http://issues.apache.org/struts/browse/STR-2739?page=all ]
David Evans reopened STR-2739:
------------------------------
Assign To: David Evans (was: Struts Developer Mailing List)
> [extras] ParameterListActionDispatcher
> --------------------------------------
>
> Key: STR-2739
> URL: http://issues.apache.org/struts/browse/STR-2739
> Project: Struts Action 1
> Type: Improvement
> Components: Extras
> Versions: 1.3.0
> Environment: Operating System: other
> Platform: Other
> Reporter: Paul Benedict
> Assignee: David Evans
> Priority: Minor
> Attachments: ParameterListActionDispatcher.java,
> ParameterListActionDispatcher.java, ParameterListActionDispatcher.java,
> ParameterMappingDispatchAction.java, ParameterMappingDispatchAction.java
>
> The attached ParameterMappingDispatchAction class is a proposed enhancement to
> MappingDispatchAction either as a subclass or a direct replacement. Here are
> the
> added benefits:
> 1) For a form with multiple buttons, the parameter attribute can contain a
> list
> of appropriate methods to iterate for a match. These methods are matched
> against
> incoming request parameters (as well as button .x/.y suffixes). For security
> reasons, a developer may want to limit which methods to invoke for a
> particular
> mapping, unlike DispatchAction which will match any existing method.
> <action ... parameter="save,apply,back"/>
> 2) ParameterMappingDispatchAction provided the ability to also obfuscate
> method
> names, and so does this by providing a key=value mapping. The key will be the
> request parameter name and the value the method name.
> <action ... parameter="save,apply=saveAndReturn,back=goBack"/>
> 3) Sometimes the user presses Enter to submit the form and no button is
> explicitly submitted. When this case is important to catch, the action may
> invoke the "default" method if nothing matches. In this example, the default
> is
> to save.
> <action ... parameter="save,apply,back,default=save"/>
> 4) When only one method is listed, the method returns it to equal
> functionality
> to MappingDispatchAction.
> <action ... parameter="save"/>
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