StrutsLinkTool improvements

[Gianpiero Caretti]

Hi!
Another suggestion for another velocity tool :-)
One of the strong limitation velocity has it's the inability to manage static 
fields. So, in order to get the input Struct action inside a VM page you are 
forced to use the following code:

## get source action
#set ( $mapping = 
$request.getAttribute("org.apache.struts.action.mapping.instance") )

instead of the more secure:
## get source action
#set ( $mapping = $request.getAttribute(org.apache.struts.Globals.MAPPING_KEY)  
)
What about to add to the StrutsLinkTool these two methods (the 2nd could be 
optional)?

public ActionConfig getInputAction()
{
    return (ActionConfig)request.getAttribute(Globals.MAPPING_KEY);
}
public String getInputActionPath()
{
    return (getInputAction() != null) ?
            getInputAction().getPath() : null;
}
Having the your VM code could be more strong:
## get source action
#set ( $mapping = $link.inputAction )
Regard,
Gianpiero

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