[SMW-devel] Change in Code -- Breaking some extensions!

[Denny V. <dv...@ai...>]

Hi all,

in order to make it simpler in the future to add new formats, the static
array $formats in the SMWQueryProcessor class was moved to the
SMW_GlobalFunctions.php file and renamed $smwgResultFormats with the
latest update on Semantic MediaWiki.

This breaks compatibility with some extensions if they were adding
formats. This explicitly includes Semantic Layers, Semantic Google Maps,
and Halo, and possibly others.

All that needs to be done to retain compatibility is to replace the
following string

SMWQueryProcessor::$formats

with

$smwgResultFormats

and make sure that $smwgResultFormats was declared global before that.
You don't have to include any further files anymore like
SMW_QueryProcessor or SMW_QueryPrinter.

Rationale (or: Why was this done?)

Previously, when you wanted to add a new format, you needed
SMWQueryProcessor's static formats array, but SMWQueryProcessor is an
autoloaded class: whenever you added a new format, a number of files
were loaded and parsed. New formats are added in the local setting,
resulting in having to load, parse and execute all the query processor
PHP files even when they were not required.

By moving this array to the global functions, which are loaded anyway,
the number of files that are loaded at each call is decreased, thus
keeping up a good speed even when adding new formats.

Sorry for any inconvenience caused.

Best,
denny