Mark,

thanks for the prompt answer, and yes I do know now why the change was made.

Le 07/01/2013 11:20, Mark Thomas a écrit :
> On 07/01/2013 10:03, Emmanuel Poitier wrote:
>> All,
>>
>> This is my first post for the Tomcat project, and I do hope it is the
>> right place for this question, as it is involving a change in the
>> development branch.
> This is one of a the few questions that could be asked on either list.
> As a general rule, if you are unsure you should use the users mailing list.
>
>> I have implemented my own EL based on the EL API. The EL API interface
>> provided in Tomcat I used up to v7.0.12 made all my test pass, and then
>> when I switched to v7.0.14, I have two errors returned when accessing an
>> Integer instance from a Map of properties.
>>
>> Please see below the patch I have extracted between v7.0.12 and v7.0.14
>> explaining the issue I have seen and I would like to understand the
>> reason of returning an Object.class and not the class type of the value
>> stored ?
>>
>> Thanks in advance for your help, and if this is not the right place I
>> should ask this question, just tell me and I will send it to the user
>> mailing list.
> If you want to understand the reason for a change, then the first place
> you should look is the change history for the files in question.
>
> The ASF provides a web based interface to this at [1]. The organisation
> of Tomcat's part of the tree is described in [2]. The history you need
> to read is [3] which will lead you to [4] and the Expression Language
> 2.2 specification sections 2.14.7 and 2.15.7
>
> all of which will explain why the change was made.
>
> Mark
>
>
> [1] http://svn.apache.org/viewvc/
> [2] http://tomcat.apache.org/svn.html
> [3]
> http://svn.apache.org/viewvc/tomcat/trunk/java/javax/el/ListELResolver.java?view=log
> [4] https://issues.apache.org/bugzilla/show_bug.cgi?id=51177
>
>
>> diff -uNrbB javax/el/ListELResolver.java
>> ../../apache-tomcat-7.0.14-src/java/javax/el/ListELResolver.java
>> --- javax/el/ListELResolver.java    2011-04-01 17:16:46 +0000
>> +++ ../../apache-tomcat-7.0.14-src/java/javax/el/ListELResolver.java   
>> 2011-05-09 21:44:02 +0000
>> @@ -74,8 +74,7 @@
>>                  throw new PropertyNotFoundException(
>>                          new
>> ArrayIndexOutOfBoundsException(idx).getMessage());
>>              }
>> -            Object obj = list.get(idx);
>> -            return (obj != null) ? obj.getClass() : null;
>> +            return Object.class;
>>          }
>>  
>>          return null;
>> diff -uNrbB javax/el/MapELResolver.java
>> ../../apache-tomcat-7.0.14-src/java/javax/el/MapELResolver.java
>> --- javax/el/MapELResolver.java    2011-04-01 17:16:46 +0000
>> +++ ../../apache-tomcat-7.0.14-src/java/javax/el/MapELResolver.java   
>> 2011-05-09 21:44:02 +0000
>> @@ -64,8 +64,7 @@
>>  
>>          if (base instanceof Map<?,?>) {
>>              context.setPropertyResolved(true);
>> -            Object obj = ((Map<?,?>) base).get(property);
>> -            return (obj != null) ? obj.getClass() : null;
>> +            return Object.class;
>>          }
>>         
>>          return null;
>>
>> Best regards,
>> -- 
>> Emmanuel Poitier- Chief Executive Officer (CEO)
>> Enman
>>
>> Telephone:+33 (0)2 54 67 15 38       
>>      Mobile:+33 (0)64 9461 586
>> Email:emmanuel.poit...@enman.fr      
>>      Web site:http://enman.fr
>>
>
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Best regards,
-- 
Emmanuel Poitier- Chief Executive Officer (CEO)
Enman

Telephone:+33 (0)2 54 67 15 38  
        Mobile:+33 (0)64 9461 586
Email:emmanuel.poit...@enman.fr         
        Web site:http://enman.fr

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