Zoran Avtarovski wrote:
I¹m trying to achieve something with OGNL and I¹d like to know if it¹s
possible and if so how to do it.
In my action I have an object called surveyResult with setter/getter. I also
have another object called questions with setter/getter.
The question object has a string element called questionEntity which is in
this case equal to ŒsurveyResult.initialvalue¹
What I want to be able to do is use the value from the surveyEntity to get a
value from the survey object.
I¹ve tried <s:property value="%{questionEntity}"/> which just gives me
ŒsurveyResult.intialvalue¹. Is there any way I can actually call
surveyResult.intialvalue and get the stored value in surveyResult?
Z.
So, I understand that:
surveyResult.questionEntity="surveyResult.initialValue" (a String)
and you want to perform a nested evaluation:
eg.
interimResult = evaluate("surveyResult.questionEntity");
finalResult = evaluate(interimResult);
The s:property tag does recognise nested expressions. My guess is this:
<s:property value="#root.%{surveyResult.questionEntity}/>
which reads: evaluate surveyResult.questionEntity, then get the property
with that name from the value stack.
**BUT, I can't remember if #root is right, or #stack, or #context.stack
#top or something like that; whatever it is that refers to the value
stack directly. This may be visible for the config browser.
The map notation may be clearer
<s:property value="#root[surveyResult.questionEntity]/>
In the worst case, you can invoke a method directly to get the stack.
Hope that helps a little,
Jeromy Evans
PS. I don't think this is a good idea as it is may be vulnerable to
injecting OGNL expressions depending on how surveyResult.questionEntity
is set.
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