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From "Walid Ghafir (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (OGNL-235) Problem with expressions mixing arithmetic and string concatenation
Date Tue, 21 May 2013 09:31:16 GMT

    [ https://issues.apache.org/jira/browse/OGNL-235?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13662840#comment-13662840
] 

Walid Ghafir commented on OGNL-235:
-----------------------------------

Here is an example of the problem with struts2:

{code:html}
<s:property value="'Test ' + (1+1)"/>
{code}
will output
{code:html}
Test 11
{code}
so 1+1 is evaluated as a string concatenation.

{code:html}
<s:property value="(1+1) + 'Test'"/>
{code}
will output
{code:html}
2 Test
{code}
so 1+1 is evaluated as a sum

The latter evaluation seems to be the right one, as there are parenthesis around "1+1".

                
> Problem with expressions mixing arithmetic and string concatenation
> -------------------------------------------------------------------
>
>                 Key: OGNL-235
>                 URL: https://issues.apache.org/jira/browse/OGNL-235
>             Project: Commons OGNL
>          Issue Type: Bug
>    Affects Versions: 3.0
>            Reporter: Thim Anneessens
>
> The following behavior is strange:
> OGNL Expression: "Your number is "+(3+1)
> Resulting output: Your number is 31
> Expected output: Your number is 4
> OGNL Expression: (3+1)+" is my number"
> Resulting output: 4 is your number
> This pretty much sums the problem ;). 
> Thanks in advance for looking into this.
> Thim.

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