Configuration

Configuration
Lists configuration parameters that site administrators may modify according to the particular needs of their wiki.
Table of Contents

Semantic MediaWiki offers a number of configuration parameters that site administrators may modify according to the particular needs of their wiki. This page explains all configuration parameters for Semantic MediaWiki. All available configuration parameters can also be found in file  DefaultSettings.php.

To change the setting of any configuration parameter, copy the respective assignment into your "LocalSettings.php" file, after including Semantic MediaWiki as described in installation. Do not change the "DefaultSettings.php" file directly, as your changes would be overwritten in software upgrades. See also the help page on function enableSemantics including configuration preloading.

See also this page for a unordered list of configuration parameters.

Installation settings

The following settings relate to the basic installation of Semantic MediaWiki.

Parameter	Description	Default	Version
$smwgCompactLinkSupport	Sets whether compact links to special query pages should be used	false	3.0.0+
$smwgCompactLinkSupport	Sets whether compact links to special query pages should be used	false	3.0.0+
$smwgEnableUpdateJobs	Sets whether tasks are deferred until after a page was edited by using the job queue	true	1.2.0+
$smwgEnabledQueryDependencyLinksStore	Sets whether tracking and storing of dependencies of embedded queries may be used	false	2.3.0+
$smwgFallbackSearchType	Sets the search engine to fall back to in case SMWSearch is used as custom search engine but is unable to interpret the search term as an semantic query.	null	2.1.0+
$smwgIgnoreExtensionRegistrationCheck	Sets whether users will be informed about the discrepancy of having Semantic MediaWiki installed but not enabled	false	3.1.0+
$smwgIgnoreUpgradeKeyCheck	Allows to disable the upgrade key check	false	4.1.3+
$smwgNamespace	Sets the namespace of exported URIs	see doc­u­men­ta­tion	1.0+
$smwgNamespaceIndex	Sets the index of the first namespace to be used by Semantic MediaWiki	100	0.7+
$smwgNamespacesWithSemanticLinks	Defines for which namespaces the semantic links and annotations are to be evaluated	see doc­u­men­ta­tion	0.7+
$smwgPlainList	Sets whether the list format should provide class attributes to HTML elements	false	3.1.2+
$smwgPropertyInvalidCharacterList	Sets a list of invalid characters which are not allowed to be used for property naming	see doc­u­men­ta­tion	2.5.0+
$smwgQueryDependencyPropertyExemptionList	Sets special properties that should be exempted from embedded queries updates	see doc­u­men­ta­tion	2.3.0+
$smwgAdminFeatures	Sets which administrative features may be used via special page "SemanticMediaWiki"	see doc­u­men­ta­tion	2.5.0+
$smwgAdminRefreshStore	Sets whether it is possible to set up the database tables or to initiate the repairing or updating of all semantic data of wiki using the interface on special page "SemanticMediaWiki"	true	1.3.0+
$smwgConfigFileDir	Sets the directory for storing the setup information file ensuring database consistency	__DIR__	3.0.1+
$smwgCreateProtectionRight	Sets the user right required to create new properties	false	3.0.0+
$smwgDVFeatures	Sets the available features regarding property data values	see doc­u­men­ta­tion	2.4.0+
$smwgDefaultNumRecurringEvents	Sets the default number of recurring events if no end date is set	100	1.4.3+
$smwgDefaultStore	Sets the storage backend to be used for the semantic data	SMW\SQLStore\SQLStore	0.7+
$smwgEnabledEditPageHelp	Sets whether helpful information is displayed when editing a page	true	2.1.0+
$smwgEnabledInTextAnnotationParserStrictMode	Sets whether strictness should be enforced during the annotation parsing process	true	2.3.1+
$smwgEntityCollation	Sets which collation entities in Semantic MediaWiki should sort with	identity	3.0.0+
$smwgFieldTypeFeatures	Sets relational database specific field type features	false	3.0.0+
$smwgFixedProperties	Sets user defined properties to have a dedicated database table for them	[];	1.9.0+
$smwgImportFileDirs	Sets the contents import directory for legitimate files to be imported upon installation of Semantic MediaWiki	see doc­u­men­ta­tion	2.5.0+
$smwgImportReqVersion	Sets the contents import file version for legitimate files to be imported upon installation of Semantic MediaWiki	1	2.5.0+
$smwgLinksInValues	Sets whether internal links in values for properties of datatype "Text" may be stored within property values	false	1.3.0+
$smwgLocalConnectionConf	Sets the database connection characteristics for providers used	see doc­u­men­ta­tion	2.5.3+
$smwgMaxNumRecurringEvents	Sets the maximum number of recurring events that can be defined regardless of a given end date	500	1.4.3+
$smwgPageSpecialProperties	Sets the page related special properties to be used	[ '_MDAT' ]	1.7.0+
$smwgQueryProfiler	Sets whether specific monitorable profile data are recorded	true	1.9.0+
$smwgResultAliases	Sets available aliases for result formats	see doc­u­men­ta­tion	1.8.0+
$smwgShowHiddenCategories	Sets whether to omit categories marked with the HIDDENCAT behaviour switch from the annotation process	true	1.9.0+
$smwgURITypeSchemeList	Sets the permissive URI schemes for data values to properties of datatype URL and Annotation URI	see doc­u­men­ta­tion	3.0.0+
$smwgLinksInValues	Sets whether internal links in values for properties of datatype "Text" may be stored within property values	false	1.3.0+

Cache settings

The following settings are relevant for the caching behaviour of Semantic MediaWiki, such as special pages, factboxes etc.

Parameter	Description	Default	Version
$smwgFactboxCacheRefreshOnPurge	Sets whether or not a cached factbox should be invalidated on an "action=purge" event.	true	1.9.0+
$smwgFactboxUseCache	Sets whether or not a factbox content should be stored in cache.	true	1.9.0+
$smwgQueryResultNonEmbeddedCacheLifetime	Sets the cache lifetime of non-embedded queries and their results fetched from the query engine	60 * 10	2.5.0+
$smwgQueryResultNonEmbeddedCacheLifetime	Sets the cache lifetime of non-embedded queries and their results fetched from the query engine	60 * 10	2.5.0+
$smwgAutoRefreshOnPurge	Sets whether semantic data are refreshed in the store when a page is manually purged	true	1.9.0+
$smwgCacheType	Sets which object cache Semantic MediaWiki should use to track temporary changes	CACHE_ANYTHING	1.9.0+
$smwgCacheUsage	Sets how the caching behaviour or special pages related to Semantic MediaWiki is controlled	see doc­u­men­ta­tion	1.9.0+
$smwgMainCacheType	Sets which object cache Semantic MediaWiki should use to track temporary changes	CACHE_ANYTHING	2.3.0+
$smwgQueryResultCacheLifetime	Sets the cache lifetime of embedded queries and their results fetched from the query engine	60 * 60 * 24 * 7	2.5.0+
$smwgQueryResultCacheRefreshOnPurge	Sets whether it is possible to manually refresh the query cache by doing a "purge" action	true	2.5.0+
$smwgQueryResultCacheType	Sets whether the query result cache may be used	CACHE_NONE	2.5.0+
$smwgCacheUsage	Sets how the caching behaviour or special pages related to Semantic MediaWiki is controlled	see doc­u­men­ta­tion	1.9.0+

Interface settings

The following settings are relevant for the general appearance of various wiki pages in Semantic MediaWiki, as well as for browsing interfaces such as Special:Browse.

Parameter	Description	Default	Version
$smwgFactboxFeatures	Sets the behaviour of features related to the factbox	see doc­u­men­ta­tion	3.0.0+
$smwgBrowseByApi	Sets whether the display of special page "Browse" will be generated using an API request	true	2.5.0+
$smwgBrowseFeatures	Sets the behaviour of the features provided by several browsing interfaces	see doc­u­men­ta­tion	3.0.0+
$smwgBrowseShowAll	Sets whether the browse view for incoming links on special page special page "Browse" should show the incoming links	true	1.3.0+
$smwgBrowseShowInverse	Sets whether the browse view for incoming links on special page special page "Browse" should show the incoming links inverse to the reverse view	false	1.3.0+
$smwgInlineErrors	Sets whether warnings should be shown right after problematic annotations	true	1.0+
$smwgPagingLimit	Sets the number of results shown in the listings on pages in the namespace "Property", "Concept" as well as on the special pages "Special:Types" and "Special:ProcessingErrorList"	$smwgPagingLimit =  [    'type' => 200,    'concept' => 200,    'property' => 50,    'errorlist' => 25, ];	3.0+
$smwgParserFeatures	Sets the behaviour of features related to text and annotation parsing	see doc­u­men­ta­tion	3.0.0+
$smwgRedirectPropertyListLimit	Sets the number of redirect results (synonyms) shown in the listings in the "Synonyms" section on pages in namespace "Property"	25	2.5.0+
$smwgSearchByPropertyFuzzy	Sets whether special page "Search by property" should display nearby results	see doc­u­men­ta­tion	1.1.0+
$smwgShowFactbox	Sets in which cases the factbox should be shown below a page	see doc­u­men­ta­tion	0.7+
$smwgShowFactboxEdit	Sets in which cases the factbox should be shown when editing a page	see doc­u­men­ta­tion	1.0+
$smwgSubPropertyListLimit	Sets the number of subproperties shown in the listings in the "Subproperties" section on pages in namespace "Property"	25	2.5.0+
$smwgToolboxBrowseLink	Sets whether the toolbox in the wiki's sidebar will show a link to special page special page "Browse"	true	1.3.0+

Parameter	Description
$smwgMaxNonExpNumber	The maximal number that SMW will normally display without using scientific exp notation. The default is rather large since some users have problems understanding exponents. Scientific applications may prefer a smaller value for concise display. Default: 1000000000000000

Query settings

Settings for inline queries and for semantic queries in general. This can especially be used to prevent overly high server-load by complex queries. The following settings affect all queries, wherever they occur.

Parameter	Description	Default	Version
$maxRecursionDepth	Sets the recursion depth for a template output	2	1.4.0+
$smwgEnabledQueryDependencyLinksStore	Sets whether tracking and storing of dependencies of embedded queries may be used	false	2.3.0+
$smwgQSortFeatures	Sets the behaviour for the sorting features of the semantic search	see doc­u­men­ta­tion	3.0.0+
$smwgQUpperbound	Sets the upper bound of the offset used for the maximal number of rows ever printed in an embedded query	5000	2.1.0+
$smwgRemoteReqFeatures	Sets the behaviour of the features provided for remote requests	see doc­u­men­ta­tion	3.0.0+
$smwgRemoteReqFeatures	Sets the behaviour of the features provided for remote requests	see doc­u­men­ta­tion	3.0.0+
$smwgCategoriesAsInstances	Sets whether a category statement should be treated as an element of the category	true	1.5.0+
$smwgCategoryFeatures	Sets the behaviour of the query features related to category handling	see doc­u­men­ta­tion	3.0.0+
$smwgQFilterDuplicates	Sets whether duplicate query conditions should be removed from computing query results	false	2.5.0+
$smwgQMaxDepth	Sets the maximum property depth for inline queries	4	1.0+
$smwgQMaxInlineLimit	Sets the maximal number of rows ever printed by queries	500	1.0+
$smwgQMaxLimit	Sets the maximal number of results ever retrieved by queries	10000	1.0+
$smwgQMaxSize	Sets the maximum number of conditions for inline queries	12	1.0+
$smwgQRandSortingSupport	Sets whether random sorting of query results should be possible	true	1.0+
$smwgQSortingSupport	Sets whether sorting of query results should be possible	true	1.0+
$smwgQStrictComparators	Sets whether the ">" and "<" comparators should be strict	false	1.5.3+
$smwgQSubcategoryDepth	Sets the maximum level of subcategory inclusion (steps within category hierarchy) when querying	10	1.0+
$smwgQuerySources	Sets a list of sources, i.e. query back-ends that can return query results	see doc­u­men­ta­tion	1.8.0+
$smwgUseCategoryHierarchy	Sets whether elements of the subcategory hierarchy are considered as hierarchy elements in the annotation process	true	1.5.0+

Parameter	Description
$smwgQDefaultNamespaces	Which namespaces should be searched by default? A value of NULL switches off default restrictions on searching, which is faster. An example value with namespaces would be [ NS_MAIN, NS_FILE ]. Default: NULL
$smwgIgnoreQueryErrors	Should queries be executed even if some errors were detected? A hint that points out errors is shown in any case. Default: true

Settings for inline queries

The following settings affect inline queries and querying special pages, in particular Special:Ask. Essentially they should mirror the kind of queries that should immediately be answered by the wiki, using whatever computations are needed.

Parameter	Description	Default	Version
$smwgQFilterDuplicates	Sets whether duplicate query conditions should be removed from computing query results	false	2.5.0+

Settings for Special:Ask

The following settings affect querying special pages, in particular Special:Ask. The settings for inline queries mentioned above also affect queries on special pages.

Parameter	Description	Default	Version
$smwgResultFormatsFeatures	Sets whether features for some result formats should be extended	see doc­u­men­ta­tion	2.5.0+
$smwgSpecialAskFormSubmitMethod	Sets the HTTP submit method used by Special page "Ask"	SMW_SASK_SUBMIT_POST	3.0.0+

Settings for concept queries

Further settings for queries. The following settings affect queries that are part of concept pages. These are usually chosen to be less restricted than inline queries, since there are two other means for controlling their use:

1. Concept queries that would not be allowed as normal queries will not be executed directly, but can use pre-computed results instead. This is the default. See Concept caching for details on how to exploit this.
2. The whole Concept: namespace can be restricted (using some suitable MediaWiki extension) to an experienced user group that may create more complex queries resonably. Other users can employ thus defined concepts in their queries.

Parameter	Description
$smwgQConceptCaching	Which concepts should be displayed only if available from cache? Possible values are: CONCEPT_CACHE_ALL show concept elements anywhere only if they are cached, CONCEPT_CACHE_HARD show without cache if concept is not harder than permitted inline queries, or CONCEPT_CACHE_NONE show all concepts even without any cache. In any case, caches will always be used if available (but see $smwgQConceptCacheLifetime). Default: CONCEPT_CACHE_HARD
$smwgQConceptMaxSize	Same as $smwgQMaxSize but for concepts. Default: 20
$smwgQConceptMaxDepth	Same as $smwgQMaxDepth but for concepts. Default: 8
$smwgQConceptFeatures	Same as $smwgQFeatures but for concepts. Note that using concepts in concepts is currently not supported – do not enable it! Default: SMW_PROPERTY_QUERY | SMW_CATEGORY_QUERY | SMW_NAMESPACE_QUERY | SMW_CONJUNCTION_QUERY | SMW_DISJUNCTION_QUERY
$smwgQConceptCacheLifetime	This setting defines the cache life time in minutes. If a concept cache exists but is older than this, SMW tries to recompute it, and will only use the cache if this is not allowed due to settings above. Default: 24 * 60 (= 1 day)

Settings for full-text search

The following settings affect the full-text search.

Parameter	Description	Default	Version
$smwgEnabledFulltextSearch	Sets whether full-text search support for properties may be used	false	2.5.0+
$smwgFulltextDeferredUpdate	Sets the number of expected full-text search index updates	true	2.5.0+
$smwgFulltextLanguageDetection	Sets which languages to detect for the full-text search from an indexable text	[];	2.5.0+
$smwgFulltextSearchIndexableDataTypes	Sets which datatypes are allowed to be indexed using the full-text search	see doc­u­men­ta­tion	2.5.0+
$smwgFulltextSearchMinTokenSize	Sets the minimum word/token length to help to decide whether MATCH or LIKE operators are to be used for a condition statement	3	2.5.0+
$smwgFulltextSearchPropertyExemptionList	Sets the property keys for which value assignments are being exempted from the full-text indexing	see doc­u­men­ta­tion	2.5.0+
$smwgFulltextSearchTableOptions	Sets the full-text search table options to use during installation or update	see doc­u­men­ta­tion	2.5.0+

Settings for query formatting/display

Parameter	Description
$smwgQDefaultLinking	Which result columns in an inline query should be linked if not specified otherwise. Possible values are 'none', 'subject' (links only in first column), 'all'. Default: 50
smwgResultFormats	This setting contains an array of all query result formats that the wiki supports. It is normally extended automatically by extensions that supply additional formats. However, it is also possible to set this array manually, e.g. to disable some formats. To disable a format, do unset($smwgResultFormats['template']); Disabled formats will be treated like if the format parameter had been omitted. The formats 'table' and 'list' are defaults that cannot be disabled. The format 'broadtable' should not be disabled either in order not to break Special:Ask. Default: [ 'table' => 'SMWTableResultPrinter', 'list' => 'SMWListResultPrinter', 'ol' => 'SMWListResultPrinter', 'ul' => 'SMWListResultPrinter', 'broadtable' => 'SMWTableResultPrinter', 'category' => 'SMWCategoryResultPrinter', 'embedded' => 'SMWEmbeddedResultPrinter', 'template' => 'SMWListResultPrinter', 'count' => 'SMWListResultPrinter', 'debug' => 'SMWListResultPrinter', 'rss' => 'SMWRSSResultPrinter', 'csv' => 'SMWCsvResultPrinter', 'dsv' => 'SMWDSVResultPrinter', 'json' => 'SMWJSONResultPrinter', 'rdf' => 'SMWRDFResultPrinter' ];

Export settings

Parameter	Description	Default	Version
$smwgNamespace	Sets the namespace of exported URIs	see doc­u­men­ta­tion	1.0+
$smwgExportResourcesAsIri	Sets whether resources should be exported as IRIs (Internationalized Resource Identifiers)	true	2.5.0+

Parameter	Description
$smwgAllowRecursiveExport	Can normal users request recursive export, i.e. an OWL/RDF export that includes a full export of all mentioned pages, and of all pages they mention, and so on. Recommended only for very small wikis. Default: false
$smwgExportBacklinks	Should incoming properties be part of OWL/RDF export? Default: true

Other settings

The following settings usually need no modification.

SPARQL and RDF store stettings

See also the help page on configuring Semantic MediaWiki for use with SPARQL and RDF stores.

Parameter	Description	Default	Version
$smwgSparqlRepositoryConnectorForcedHttpVersion	Sets whether CURLOPT_HTTP_VERSION should explicitly be forced for the endpoint communication	false	2.3.1+
$smwgDefaultStore	Sets the storage backend to be used for the semantic data	SMW\SQLStore\SQLStore	0.7+
$smwgExportResourcesAsIri	Sets whether resources should be exported as IRIs (Internationalized Resource Identifiers)	true	2.5.0+
$smwgSparqlCustomConnector	Defines the SPARQL custom database connectors	custom	1.6.0+
$smwgSparqlDataEndpoint	Sets the endpoint for data on the SPARQL database	http://localhost:8080/data/	1.6.0+
$smwgSparqlDefaultGraph	Sets the identifier (graph) of the SPARQL database	''	1.7.0+
$smwgSparqlQFeatures	Sets the SPARQL query features that are expected to be supported by the repository of the identifier (graph) of the SPARQL database	see doc­u­men­ta­tion	2.3.0+
$smwgSparqlQueryEndpoint	Sets the endpoint for querying the SPARQL database	http://localhost:8080/sparql/	1.6.0+
$smwgSparqlReplicationPropertyExemptionList		see doc­u­men­ta­tion	+
$smwgSparqlRepositoryConnector	Identifies a database connector that ought to be used together with the semantic data store.	default	2.0.0+
$smwgSparqlUpdateEndpoint	Sets the endpoint for updating the SPARQL database	http://localhost:8080/update/	1.6.0+

Miscellaneous settings

Parameter	Description	Default	Version
$smwgCheckForConstraintErrors	Sets whether constraint violations are shown to the user via a page indicator	see doc­u­men­ta­tion	3.1.0+
$smwgMandatorySubpropertyParentTypeInheritance		false	3.1.0+
$smwgPDefaultType	Sets the default datatype for a property if it was not defined manually	_wpg	1.1.2+
$smwgTranslate	Sets that all labels within special page "Browse"Shows all properties and their values annotated to a page are being translated given that they have interwiki links	false	0.7+
$smwgChangePropagationProtection	Sets whether property pages are protected from editing while a property change propagation is being processed	true	3.0.0+
$smwgChangePropagationWatchlist	Sets the properties that are relevant for property change propagation	see doc­u­men­ta­tion	1.5.0+
$smwgDataTypePropertyExemptionList	Sets which datatypes are exempted from the property registration process	see doc­u­men­ta­tion	2.5.0+
$smwgExperimentalFeatures	Sets experimental features	see doc­u­men­ta­tion	3.0.0+
$smwgExtraneousLanguageFileDir	Sets the path to the extraneous language files used by Semantic MediaWiki as seen in the local filesystem	__DIR__ . '/i18n/extra';	2.5.0+
$smwgPropertyReservedNameList	Sets which names are reserved from usage as property names	see doc­u­men­ta­tion	3.0.0+
$smwgQTemporaryTablesAutoCommitMode	Sets whether certain types of database transactions may be performed that cannot be safely logged using global transaction identifiers (GTIDs)	false	2.5.0+
$smwgServicesFileDir	Sets the path to the service's files used by Semantic MediaWiki as seen in the local filesystem	__DIR__ . '/src/Services';	2.5.0+

Experimental settings

The following configuration parameters enable or control the behaviour of experimental features.

Parameter	Description	Default	Version
$smwgEnabledQueryDependencyLinksStore	Sets whether tracking and storing of dependencies of embedded queries may be used	false	2.3.0+
$smwgQueryDependencyPropertyExemptionList	Sets special properties that should be exempted from embedded queries updates	see doc­u­men­ta­tion	2.3.0+
$smwgEnabledFulltextSearch	Sets whether full-text search support for properties may be used	false	2.5.0+
$smwgFieldTypeFeatures	Sets relational database specific field type features	false	3.0.0+
$smwgFulltextDeferredUpdate	Sets the number of expected full-text search index updates	true	2.5.0+
$smwgFulltextLanguageDetection	Sets which languages to detect for the full-text search from an indexable text	[];	2.5.0+
$smwgFulltextSearchIndexableDataTypes	Sets which datatypes are allowed to be indexed using the full-text search	see doc­u­men­ta­tion	2.5.0+
$smwgFulltextSearchMinTokenSize	Sets the minimum word/token length to help to decide whether MATCH or LIKE operators are to be used for a condition statement	3	2.5.0+
$smwgFulltextSearchPropertyExemptionList	Sets the property keys for which value assignments are being exempted from the full-text indexing	see doc­u­men­ta­tion	2.5.0+
$smwgFulltextSearchTableOptions	Sets the full-text search table options to use during installation or update	see doc­u­men­ta­tion	2.5.0+
$smwgQFilterDuplicates	Sets whether duplicate query conditions should be removed from computing query results	false	2.5.0+
$smwgQueryResultCacheLifetime	Sets the cache lifetime of embedded queries and their results fetched from the query engine	60 * 60 * 24 * 7	2.5.0+
$smwgQueryResultCacheType	Sets whether the query result cache may be used	CACHE_NONE	2.5.0+