| Attributes | Values |
|---|
| type
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| Date Created
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| Date Modified
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| label
| - VirtTipsAndTricksCustomControlLabelsURI
|
| maker
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| Title
| - VirtTipsAndTricksCustomControlLabelsURI
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| isDescribedUsing
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| has creator
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| attachment
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| content
| - %META:TOPICPARENT{name="VirtuosoFacetsWebService"}%
---+Custom Controlling Virtuoso Labels for URI functionality
%TOC%
---++What is this?
A component of Virtuoso's DBMS hosted faceted browser engine for Linked Data that enhances UI by automagically relegating URIs to the
@href attributes of an HTML anchor while using label property values for actual anchor text.
---++Why is this important?
The fundamental UI/UX goal of Linked Data oriented client solutions should always be to make URIs invisible without compromising their inherent power re. Web experience e.g., the ability to drill-down from an position on the WWW graph using click (de-reference) based follow-your-nose patterns.
URIs lie at the very core of that makes the Web and its Linked Data dimension tick. Unfortunately, they are also distracting to most end-users thereby compromising UI aesthetics.
---++How do I use this functionality?
First, lets understand the fundamental challenge. There are a number of annotation oriented attributes (or predicates) used in relations across databases, data spaces, and stores the exposed access to Linked Data. Unfortunately, there isn't a universally adopted attribute/predicate for 'labels', since everyone doesn't uniformly use rdfs:label when constructing Linked Data.
Virtuoso solves the problem at hand by enabling you to populate a named graph with rdfs:subPropertyOf and owl:equivalentProperty relations (triples) that map disparate annotation properties to Virtuoso's in-built virtrdf:label annotation property. Once in place, the aforementioned named graph is then used as the basis for an inference rule that's optionally available for use via SPARQL and/or the Faceted Browser.
---+++Example
This is example is focuses on the in-built 'facets' named graph that is used by faceted browser engine.
---++++ Prerequisites
Make sure the following packages are installed:
* [[http://s3.amazonaws.com/opldownload/uda/vad-packages/6.1/virtuoso/cartridges_dav.vad][Cartridges]];
* [[http://s3.amazonaws.com/opldownload/uda/vad-packages/6.1/virtuoso/fct_dav.vad][Virtuoso Faceted Browser]].
---++++ Basic Steps
1 Load for ex. http://www.w3.org/People/Berners-Lee/card by accessing:
http://localhost:8890/about/html/http://www.w3.org/People/Berners-Lee/card
%BR%%BR% %BR%%BR%
1 View http://cname/describe/?url=http://www.w3.org/People/Berners-Lee/card%23i, so for ex.:
http://localhost:8890/describe/?url=http://www.w3.org/People/Berners-Lee/card%23i
1 As result the "About" value will be shown as URI:
http://www.w3.org/People/Berners-Lee/card#i
%BR%%BR% %BR%%BR%
1 Next use SPARQL 1.1 Update Statement to populate the 'facets' named graph:
SPARQL INSERT INTO GRAPH
{
rdfs:subPropertyOf virtrdf:label .
rdfs:subPropertyOf virtrdf:label .
rdfs:subPropertyOf virtrdf:label .
rdfs:subPropertyOf virtrdf:label .
rdfs:subPropertyOf virtrdf:label .
}
;
Query result:
callret-0
ANY
Insert into , 5 (or less) triples -- done
No. of rows in result: 1
1 Use the named graph above as the basis for an inference rule or simply issue this command whenever you've added new relations to the 'facets' named graph:
rdfs_rule_set ('facets', 'facets');
* Note: In situations where you have alternative named graphs (e.g. 'virtrdf-label') which the relations you seek in an alternative named graph, you can bring those to bear by issuing the following command:
rdfs_rule_set('facets','virtrdf-label');
1 View again http://cname/describe/?url=http://www.w3.org/People/Berners-Lee/card%23i, so for ex.:
http://localhost:8890/describe/?url=http://www.w3.org/People/Berners-Lee/card%23i
1 As result the "About" value will be shown as label:
TimBL
%BR%%BR% %BR%%BR%
---++Related
* Facets Web Service:
* [[VirtuosoFacetsWebService][Virtuoso Facets Web Service]]
* Linked Data:
* [[VirtuosoFacetsViewsLinkedData][Faceted Views over Large-Scale Linked Data]]
* Facet Browser Installation and configuration:
* [[VirtFacetBrowserInstallConfig][Virtuoso Facet Browser Installation and configuration]]
* Facet APIs:
* [[VirtFacetBrowserAPIs][Virtuoso APIs for FCT REST services]]
* [[VirtFacetBrowserAPIsFCTEXEC][fct_exec API Example]]
* Pivot Viewer and CXML:
* [[http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VirtSparqlCxmlFacetPivotBridge#AncSparqlCxmlFacetPivotBridge][Facet Pivot Bridge - A bridge to PivotViewer from Virtuoso's Faceted query service for RDF]]
* [[http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VirtSparqlCxml#AncFacetTypeAutoDetection][Auto-Detection of Facet Type]]
* Tutorials:
* [[VirtuosoLODSampleTutorial][Faceted Browsing Sample using LOD Cloud Cache data space]]
* [[VirtuosoFacetsWebServiceSOAPExample][SOAP Facets Example]]
* [[VirtFacetBrowserInstallConfigQueried][Querying The Facet Browser Web Service endpoint]]
* [[VirtFCTFeatureQueries][Virtuoso Facet Browser Featured Queries]]
* [[http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VirtVisualizeWithPivotViewer#GenFCT][Visualizing Your Data With PivotViewer Using The Facet Browser]]
* [[VirtuosoFacetsWebServiceCustmExamples][Facets Web Service: Examples for customizing different types]]
* [[VirtuosoFacetsWebServiceChoiceExample][Facets Web Service: Choice of Labels Example]]
* Downloads:
* [[http://sourceforge.net/project/showfiles.php?group_id=161622&package_id=319652][Virtuoso 6.0 TP1]]
* [[http://s3.amazonaws.com/opldownload/uda/vad-packages/6.2/virtuoso/fct_dav.vad][Virtuoso Facet Browser VAD package]]
|
| id
| - 616b0f5999f5f26dcf02793da356bde9
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| link
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| has container
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| http://rdfs.org/si...ices#has_services
| |
| atom:title
| - VirtTipsAndTricksCustomControlLabelsURI
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| links to
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| atom:source
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| atom:author
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| atom:published
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| atom:updated
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| topic
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| is made
of | |
| is container of
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| is link
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| is http://rdfs.org/si...vices#services_of
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| is links to
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| is creator of
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| is atom:entry
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| is atom:contains
of | |
![[RDF Data]](/fct/images/sw-rdf-blue.png)
![[cxml]](/fct/images/cxml_doc.png)
![[csv]](/fct/images/csv_doc.png)
![[text]](/fct/images/ntriples_doc.png)
![[turtle]](/fct/images/n3turtle_doc.png)
![[ld+json]](/fct/images/jsonld_doc.png)
![[rdf+json]](/fct/images/json_doc.png)
![[rdf+xml]](/fct/images/xml_doc.png)
![[atom+xml]](/fct/images/atom_doc.png)
![[html]](/fct/images/html_doc.png)