[TYPO3-core] RFC Bug #11272: Autoloader floads sysLog with XCLASS failures

[Oliver Hader]

This is an SVN patch request.

Type: Bugfix

Bugtracker references:
http://bugs.typo3.org/view.php?id=11272

Branch: Trunk

Problem:
In the sysLog many entries like this appear with using the autoloader:
04-06-09 17:20 - Core: Unable to autoload class "ux_t3lib_matchCondition"

Solution:
Use the second parameter in class_exists() in the t3lib_div functions
makeInstanceClassName() and getClassName() - e.g.
"class_exists('ux_t3lib_matchCondition', true)". This prevents files
from being autoloaded here. This parameter was removed by accident in an
earlier commit.

The sequence is like that:
call to t3lib_div::makeInstance('someClass')
-> calls getClassName('someClass')
   -> loads the class 'someClass' if not available
   -> if XCLASS is defined, that file will be included
      at the end of the class file of 'someClass'
      -> calls getClassName('ux_someClass')
         ...
-> has the accordant class name and creates the instance

Notes:
To test this patch, just enable the "sysLog" in the install tool and
check the contents there.

olly
-- 
Oliver Hader
TYPO3 Release Manager 4.3