[TYPO3-core] RFC #12109: Call to getCache() on a non-object

[Rupert Germann]

Hi,

this is a SVN patch request.

Type: Bugfix

Bugtracker references:
http://bugs.typo3.org/view.php?id=12109

Branches: Trunk

Problem:
User writes: In some cases, if you call t3lib_div::xml2array out from 
localconf.php of an extension, then the caching has not been initialized.
Fatal error: Call to a member function getCache() on a non-object in 
...../typo3_src-4.3.0beta1/t3lib/class.t3lib_page.php on line 978

this problem was introduced with the cache for t3lib_div::xml2array()
http://bugs.typo3.org/view.php?id=11260
which added calls to t3lib_pageselect::getHash and storeHash to 
xml2array(). the caching framework is initalized after the extension 
localconfs are loaded. And also class t3lib_pageSelect is not found 
because the autoloader has not yet been initialzed.


Solution:
Check if there is a cachemanager object in storeHash/getHash and if not 
do no caching. that will slow down things a bit compared to calling 
t3lib_div::xml2array() with caching, but I don't see a problem here, 
because that was the situation before 4.3.

Moving the caching framework initialisation before the extensions is no 
option because this will kill DABL support. See bugnotes.


greets
rupert