$smwgUseCategoryHierarchy

Configuration parameter details:
Name	$smwgUseCategoryHierarchy
Description	Sets whether elements of the subcategory hierarchy are considered as hierarchy elements in the annotation process
Default setting	true
(Other) available settings	false Allows to disable considering the subcategory hierarchy as hierarchy elements in the annotation process
Software	Semantic MediaWiki
Since version	1.5.0
Until version	still available
Configuration	Query settings
Keyword	category · subcategory · inclusion · category hierarchy · hierarchy inferencing

$smwgUseCategoryHierarchy is a configuration parameter that sets whether Semantic MediaWiki should consider MediaWiki's subcategory hierarchy as hierarchy elements in the annotation process. The configuration parameter was introduced in Semantic MediaWiki 1.5.0Released on 7 March 2010 and compatible with MW 1.14.x - 1.17.x. and deprecated with Semantic MediaWiki 3.0.0Released on 11 October 2018 and compatible with MW 1.27.0 - 1.31.x.1.

This configuration parameter was deprecated with Semantic MediaWiki 3.0.0Released on 11 October 2018 and compatible with MW 1.27.0 - 1.31.x. in favour of option SMW_CAT_HIERARCHY to configuration parameter $smwgCategoryFeaturesSets the behaviour of the query features related to category handling streamlining the overall configuration of Semantic MediaWiki.1 Thus you are advised to migrate your settings in "LocalSettings.php" to the new configuration parameter since this one will be removed with the release of Semantic MediaWiki 3.1.0Released on 23 September 2019 and compatible with MW 1.31.0 - 1.33.x. in 2019.

Default setting

$smwgUseCategoryHierarchy = true;

This means that subcategories will always be interpreted like subclasses and automatically annotated with special property "Subcategory of"Lets you explicitly indicate that one category is a subcategory of another, i.e. when querying all elements of "B" the result will also yield all elements of "A" if "A" is a subcategory of "B".

Changing the default setting

To modify the setting to this configuration parameter, add one of the following lines to your "LocalSettings.php" file after the enableSemantics() call:

Disable considering the category hierarchy automatically during annotation

$smwgUseCategoryHierarchy = false;

This means that incoming links will not be interpreted like subclasses and automatically annotated with special property "Subcategory of"Lets you explicitly indicate that one category is a subcategory of another.

Subclass relationships can still be given explicitly by using special property "Subcategory of"Lets you explicitly indicate that one category is a subcategory of another on a category page. Only now such annotations will be shown in the factbox if it was enabled with parameter configuration parameter $smwgShowFactboxSets in which cases the factbox should be shown below a page.

See also

• Help page on subcategory inferencing
• Help page on special property "Subcategory of"Lets you explicitly indicate that one category is a subcategory of another
• Help page on configuration parameter $smwgQSubcategoryDepthSets the maximum level of subcategory inclusion (steps within category hierarchy) when querying
• Help page on configuration parameter $smwgCategoriesAsInstancesSets whether a category statement should be treated as an element of the category
• Help page on configuration parameter $smwgCategoryFeaturesSets the behaviour of the query features related to category handling