Virtuoso Mapping Ontology for Google

What

Virtuoso offers mapping ontology for Google. The Virtuoso hosted version: http://www.openlinksw.com/schemas/external/googlevocab#

It receives redirects from http://purl.org/NET/googlevocab# .

Why

How

The mapping can be initialize executing the sql file and uploading the ontology file as shown in the list below:

1. Re-write rules creation
2. Google Vocabulary Ontology
3. Google Vocabulary rdf

Deploying Google Mapping Vocabulary using Conductor UI:

The following step-by-step guide will lead you trough the process of Deploying Google Mapping Vocabulary using Conductor UI:

1. Go to http://<cname>:port/conductor
2. Log in as dba user

Upload the ontology file:

Go to Web Application Server -> Content Management

1. Create folder schemas ( if does not exist already):
2. Click the button "New folder"
3. In the shown form:
   1. Enter Folder name: schemas
   2. Change Owner to dav
   3. Change Free Text Indexing to Recursively
   4. Click the "Create" button.
   5. As result the folder "schemas" will be created.

Go to path /DAV/schemas

1. Click the "Upload" button.
2. In the shown form:
   1. Change Destination to RDF Store
   2. For File click the Browse button and select the googlevoc.n3 file
   3. Enter for RDF IRI for ex.: http://www.openlinksw.com/schemas/external/googlevocab#
   4. Click the upload button

As result the file will be uploaded.

Let's check the RDF data:

1. Go to http://<cname>:port/sparql
2. Enter the Graph IRI, for ex. http://www.openlinksw.com/schemas/external/googlevocab#
3. Enter the following query:
   

   
   select *
   where {?s ?p ?o}
   

   
   
4. Click the "Run Query" button.
5. As result the RDF data for the given graph will be shown:

Create the virtual folder:

1. Go to Web Application Server -> Virtual Domains & Directories
2. For defined http host, for ex. www. openlinksw.com expand the Interface blue folder icon:

1. Click New Directory
2. In the shown form select type: WebDAV doman and click the "Next" button.

1. In the Virtual Directory creation form:
   1. Enter Path: /schemas/external/googlevocab
   2. leave checked "Physical path is a WebDAV repository"
   3. Enter Physical path: /DAV/schemas/googlevoc.n3
   4. Click the "Save Changes" button

As result the Virtual Directory will be created and shown in the list of virtual directories for the selected host.

Create re-write rules for the created virtual folder from above:

1. Click the URL-rewrite link for the created "/schemas/external/googlevocab" virtual directory
2. As result will be shown the URL rewriting rules form:

Add first rule:

1. Change "Destination Path format" to:
   

   
   /rdfdesc/description.vsp?g=http%3A%2F%2Fwww.openlinksw.com%2Fschemas%2Fexternal%2Fgooglevocab%2F$U1&p=googlevoc
   

   
   

1. Click the "Add" button.
2. As result the rule will be created:

Now let's create the second rule:

1. Change "Rule matching" to "Last matching"
2. Enter for "Request Path pattern":
   

   
   /schemas/external/googlevocab/([^\.]*)$ 
   

   
   
3. Enter for "Accept Header Request pattern": application/rdf.xml
4. Enter for "Destination Path format":
   

   
   /schemas/external/googlevocab/$U1.xml
   

   
   
5. Change "HTTP Response Code" to: 303

1. Click the "Add" button.
2. As result the rule will be created:

Now let's create the third rule:

1. Change "Rule matching" to "Last matching"
2. Enter for "Request Path pattern":
   

   
   /schemas/external/googlevocab/([^\.]*)$
   

   
   
3. Enter for "Accept Header Request pattern": text/rdf.n3
4. Enter for "Destination Path format":
   

   
   /schemas/external/googlevocab/$U1.n3
   

   
   
5. Change "HTTP Response Code" to: 303

1. Click the "Add" button.
2. As result the rule will be created:

Now let's create the forth rule:

1. Change "Rule matching" to "Last matching"
2. Enter for "Request Path pattern":
   

   
   /schemas/external/googlevocab/([^\.]*)\.(rdf|xml|n3)$
   

   
   
3. Enter for "Accept Header Request pattern": (text/rdf.n3)|(application/rdf.xml)
4. Enter for "Destination Path format":
   

   
   /sparql?query=describe%20%3Chttp%3A%2F%2Fwww.openlinksw.com%2Fschemas%2Fexternal%2Fgooglevocab%2F$U1%3E&format=$accept
   

   
   

1. Click the "Add" button.
2. As result the rule will be created

Examples

• View Sample Curl Examples.

References

• Google Vocabulary