Help:Configuration parameter "$smwgQueryDependencyPropertyExemptionList"
| Title | $smwgQueryDependencyPropertyExemptionList |
| Description | Sets special properties that should be exempted from embedded queries updates |
| Default setting | See below |
| Software | Semantic MediaWiki |
| First version supported | 2.3.0 |
| Last version supported | still available |
| Configuration | Installation · Store settings |
| Keyword | SQLStore · Query setting · Query dependency · Query management |
$smwgQueryDependencyPropertyExemptionList is a configuration parameter that sets special properties that should be exempted from a query dependency update, i.e. that when an value change to a property value occurs query dependencies for the related entity are not recorded. It was introduced in Semantic MediaWiki 2.3.0 as configuration parameter $smwgPropertyDependencyDetectionBlacklist1 but was renamed in Semantic MediaWiki 2.4.0.2 It was further renamed from $smwgQueryDependencyPropertyExemptionlist with Semantic MediaWiki 2.5.1.3 The former configuration parameter name will be removed with the release of Semantic MediaWiki 3.1.0 in mid 2018.4
Note: This setting only takes effect if the embedded query update feature was enabled.Default setting
$GLOBALS['smwgQueryDependencyPropertyExemptionList'] = array( '_MDAT', '_SOBJ', '_ASKDU' );
This means that by default the following special properties are not triggering a query dependency update:
- special property "Has subobject" but it will not exclude any properties defined by a subobject given that it is not part of an extended exclusion list
- special property "Modification date" to avoid a purge on each page edit
- special property "Query duration" because changes to the duration of a query should not trigger an update of possible query dependencies (as this has no bearing on the result list
Changing the default setting
To modify this configuration setting, add one of the following lines to your "LocalSettings.php" file after the enableSemantics() call:
- Disable query dependency updates on changes to special propertes "Is a new page" and "Last editor is"
$smwgQueryDependencyPropertyExemptionList = array_merge(
$smwgQueryDependencyPropertyExemptionList, array(
'_NEWP',
'_LEDT'
)
);
Note:
- It is discouraged to remove one or all special properties set by default to this configuration parameter.
- The respective special property labels (section "propertyLabels") have to be added to set changes to this configuration parameter.
See also
- Help page on here for a more detailed description
- Help page on configuration parameter
$smwgEnabledQueryDependencyLinksStoreSets whether tracking and storing of dependencies of embedded queries may be used - Help page on configuration parameter
$smwgQueryDependencyAffiliatePropertyDetectionListSets affiliate special properties that additionally initiate a query dependency update when value change occurs
