Details
Description
I know velocity can only introspect Methods, not member variables, but
perhaps you could make an exception for arrays?
Arrays are basically suported with foreach iteration.
Now it would be great if I could also say "$myarray.length items displayed".
Is this possible somehow now?
If not, does someone agree this could be implemented?
I think .length support should be possible only IF the passed variable is an
array, and for nothing else.
Issue Links
- duplicates
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VELOCITY-365
handle Lists & arrays similarly
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- Resolved
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Activity
The user's guide, "Quiet Reference Notation" says
"When Velocity encounters an undefined reference, its normal behavior is to
output the image of the reference."
This is also done if you access a method that does not exist,
e.g. "$myvar.toStringg()" (typo intended)
So I guess that's also a fine behavior if the variable is not an array and you
want to use .length on it.
As for now, you can use
- PublicFieldUberspect to directly expose "length"
http://wiki.apache.org/jakarta-velocity/PublicFieldUberspect - ArrayTool to get "length" from arrays
http://wiki.apache.org/jakarta-velocity/ArrayTool
This keeps coming up on the user list. I think it makes sense. Someone needs to write the patch, of course.
I think given the workarounds offered by the ListTool in Velocity Tools (in svn head) and the PublicFieldUberspect on the wiki, this should be pretty well covered until Issue VELOCITY-365 is implemented, at which point this would be counter-productive.
so i'd vote to have this closed as "won't fix" or as a duplicate of VELOCITY-365.
I agree.
Eventually, we'll do all List operations on arrays as noted in Velocity-365
And what should happen when the variable is not an array?