As I said in another reply, the biggest problem is that you can't use an
object variable in velocity, since it always gets converted to a string
first. If I have a collection of model objects, and want to call a component
tag with them in an iteration through the collection, I can't, because a
call to the component tag with the former behavior can only pass in the
reference to the model object, converted to a string. For example, for a
model object like
PhoneNumber
-number
-area code
-number type
the new behavior will allow for syntax like this:
#foreach ($number in $person.phoneNumbers)
#bodytag (Component "template=numberDisplay.vm")
#param("phoneNumber" $number)
#end
#end
If you always call "stack.findValue()" behind the scenes, there's no way the
value stack can know the value of a velocity variable unless you manually
push it onto the stack, then pop it off. That's a hack to me, and is also
inconsistent with the way every other velocity directive or macro works
(directives and macros allow object references to be passed in, not just
strings). The new approach still allows for strings evaluation, but it
forces a manual call to $stack.findValue(). I think that's a fair tradeoff.
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Fred
Lamuette
Sent: Monday, November 17, 2003 9:16 AM
To: [EMAIL PROTECTED]
Subject: RE: [OS-webwork] Param directive
As far as I am concerned this approach is not the correct one ! I explain my
point of view with an example :
With the latest XWork+WW2 cvs snapshot, you can write a select tag both ways
:
1/
#tag(Select "name='nameValue'" ...) -> in this case, the parameter with
key=name and value=stack.findValue("nameValue") is added to the parameters
map.
is equivalent to
#bodytag(Select )
#param("name" "nameValue") -> in this case, the parameter with
key=name and value=nameValue is added to the parameters map.
#end
2/
#tag(Select "name=nameValue" ...)
is equivalent to
#bodytag(Select )
#param("name" "$stack.findValue($nameValue)") #end
--------
You can admit it's not very coherent, you have two different behaviors
according to what you use (extra tags or external params) whereas the same
handling behind is used (extra tags are converted as parameters).
Can you explain to me what are your arguments ?
Richard HALLIER
Chef de projet
[EMAIL PROTECTED]
01.40.12.41.52
www.uniclick.org
UNICLICK
>I believe some people asked for it to be that way as it's more natural
>for a Velocity context... I may be wrong though..
>> -----Original Message-----
>> From: Fred Lamuette [mailto:[EMAIL PROTECTED]
>> Sent: Monday, November 17, 2003 9:34 AM
>> To: [EMAIL PROTECTED]
>> Subject: [OS-webwork] Param directive
>>
>>
>> Having the latest XWork+WW2 cvs snapshot, I can notice a behavior
>> change for the param directive.
>>
>> Before
>> #param("paramName" "paramValue") -> store in the parameters list,
>> the value
>> OgnlValueStack.findValue(paramValue)
>> From now
>> #param("paramName" "paramValue") -> store in the parameters list,
>> the value paramValue
>>
>> Why did you change the previous behavior ?
>>
>> Richard HALLIER
>> Chef de projet
>> [EMAIL PROTECTED]
>> 01.40.12.41.52
>> www.uniclick.org
>> UNICLICK
>>
>>
>>
>>
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