This HTML5 document contains 32 embedded RDF statements represented using HTML+Microdata notation.

The embedded RDF content will be recognized by any processor of HTML5 Microdata.

Subject Item

n7:this

foaf:made

n2:VirtTipsAndTricksGuideBIFContainsSPARULInsert

Subject Item

n4:this

sioc:creator_of

n2:VirtTipsAndTricksGuideBIFContainsSPARULInsert

Subject Item

n9:item

n10:services_of

n2:VirtTipsAndTricksGuideBIFContainsSPARULInsert

Subject Item

n13:this

sioc:creator_of

n2:VirtTipsAndTricksGuideBIFContainsSPARULInsert

Subject Item

n5:VOS

sioc:container_of

n2:VirtTipsAndTricksGuideBIFContainsSPARULInsert

atom:entry

n2:VirtTipsAndTricksGuideBIFContainsSPARULInsert

atom:contains

n2:VirtTipsAndTricksGuideBIFContainsSPARULInsert

Subject Item

n2:VirtTipsAndTricksGuideBIFContainsSPARULInsert

rdf:type

atom:Entry sioct:Comment

dcterms:created

2017-06-13T05:50:14.673616

dcterms:modified

2017-06-13T05:50:14.673616

rdfs:label

VirtTipsAndTricksGuideBIFContainsSPARULInsert

foaf:maker

n14:this n7:this

dc:title

VirtTipsAndTricksGuideBIFContainsSPARULInsert

opl:isDescribedUsing

n20:rdf

sioc:has_creator

n4:this n13:this

sioc:content

%META:TOPICPARENT{name="VirtTipsAndTricksGuide"}% ---+ How can I adjust the frequency of RDF text indexing? ---++ What You may want to change the frequency of Virtuoso's RDF text index updates. You can decrease the frequency, if your queries are usually made some time after data inserts/updates. You can also increase the frequency to real-time, if you need inserts/updates to be immediately available for queries. ---++ Why Virtuoso's RDF text indexes (that is, the indexes on literal object values, which are distinct from the indexes of URIs in any position) are updated periodically as a batch operation; by default, the interval is one (1) minute. This means that typed literals (<code>xsd:string</code>s, XML, <code>BLOB</code>s/<code>CLOB</code>s, etc.) which are inserted or changed by SPARUL or other methods may not be immediately available to <code>[[http://docs.openlinksw.com/virtuoso/sparqlextensions.html#rdfsparqlrulefulltext][bif:contains]]</code>, <code>[[http://docs.openlinksw.com/virtuoso/queryingxmldata.html#xcontainspredicate][bif:xcontains]]</code>, or other functions that depend on the text index. ---++ How 1 First, force a synchronization of the RDF text index: <verbatim> SQL> DB.DBA.VT_INC_INDEX_DB_DBA_RDF_OBJ (); </verbatim> 1 Next, set the text index to your desired frequency, using the <code>[[http://docs.openlinksw.com/virtuoso/fn_vt_batch_update.html][VT_BATCH_UPDATE()]]</code> function. * To update the index in real time, immediately after every change, use -- <verbatim> SQL> DB.DBA.VT_BATCH_UPDATE ( 'DB.DBA.RDF_OBJ', 'OFF', NULL ); </verbatim> * To decrease the frequency, use this form (changing the "1" below to your preferred interval, in minutes) -- <verbatim> SQL> DB.DBA.VT_BATCH_UPDATE ( 'DB.DBA.RDF_OBJ', 'ON', 1 ); </verbatim> 1 Insert some example data: <verbatim> SQL> SPARQL INSERT INTO <http://example.com> { <http://www.worldcat.org/Book_11> <http://schema.org/name> "Kalimero" . }; Query result: callret-0 ANY Insert into <http://example.com>, 1 (or less) triples -- done No. of rows in result: 1 </verbatim> 1 Check the inserted triples: <verbatim> SQL> SELECT * FROM <http://example.com> WHERE { <http://www.worldcat.org/Book_11> ?p ?o }; Query result: p o ANY ANY http://schema.org/name Kalimero No. of rows in result: 1 </verbatim> 1 Check the inserted triples using <code>bif:contains</code>: <verbatim> SQL> SELECT * WHERE { <http://www.worldcat.org/Book_11> ?p ?o . ?o bif:contains "Kalimero" }; Query result: p o ANY ANY http://schema.org/name Kalimero No. of rows in result: 1 </verbatim> ---++Related * <code><a href="http://docs.openlinksw.com/virtuoso/sparqlextensions.html#rdfsparqlrulefulltext">bif:contains</a></code> documentation * <code><a href="http://docs.openlinksw.com/virtuoso/queryingxmldata.html#xcontainspredicate">bif:xcontains</a></code> documentation * Virtuoso <code>[[http://docs.openlinksw.com/virtuoso/sparqlextensions.html#rdfsparqlrulefulltext][DB.DBA.VT_INC_INDEX_DB_DBA_RDF_OBJ() ]]</code> function usage example * [[VirtTipsAndTricksGuideBIFContainsOptions][What free-text options can I use with <code>bif:contains</code>? ]]

sioc:id

7f2d60bf610f1846dc551977e96ea451

sioc:link

n2:VirtTipsAndTricksGuideBIFContainsSPARULInsert

sioc:has_container

n5:VOS

n10:has_services

n9:item

atom:title

VirtTipsAndTricksGuideBIFContainsSPARULInsert

sioc:links_to

n11:xcontainspredicate n12:html n18:rdfsparqlrulefulltext

atom:source

n5:VOS

atom:author

n7:this

atom:published

2017-06-13T05:50:14Z

atom:updated

2017-06-13T05:50:14Z

sioc:topic

n5:VOS