RDF

Semantic filters and layers over a semantically marked up document.
This module is an extension for the Semantic Markup Editor module: http://drupal.org/project/semantic_markup_editor You can create filters to semantic information and attach style layers to filters.

Under heavy development.

I developed this module at Pronovix, contact us for Drupal consulting or development jobs: http://pronovix.com

Core module of the Tattler distribution.

Installation

This module is not supposed to work in a stand-alone mode and for most cases only makes sense as part of the Tattler (app) distribution. You can download the distribution at: http://tattlerapp.com/download

Credits

Sponsored and developed by: Phase2 Technology

Markup editor for semantic RDFa data.

Under heavy development.

This module allows to embeds SPARCool (http://sparcool.net) query results in your Drupal nodes, hence using Linked Data to enrich your nodes (e.g. include a DBPedia abstract or pictures from a FOAF profile)

The RDF SPARQL Endpoint module indexes the RDF data publicly available on a Drupal site into an ARC2 RDF store. It also provides a SPARQL endpoint via the ARC2 SPARQL interface.

Because it relies on the ARC2 library, this module requires MySQL and will not work on other databases. The SPARQL module should be used instead if another database support is required.

RDF SPARQL Endpoint requires the modules:
* RDF - http://drupal.org/project/rdf (with the ARC2 library installed)
* (recommended) RDF CCK - http://drupal.org/project/rdfcck

You need to make sure the RDF data is publicly available at node/*/rdf (check the permission 'access RDF data' for anonymous user).

Why another SPARQL module?
The original SPARQL module intends to work in pair with the RDF module for Drupal, and will support any database backend. However its SPARQL support is not as mature as the SPARQL support of the ARC2 library. The downside of ARC2 is that it is MySQL specific (for now at least).

The RDF SPARQL Proxy module allows to instantiate RDF resources on demand (lazy loading) via SPARQL CONSTRUCT queries. Site administrators can define profiles which specify the mapping rules of the remote data schema to the local Drupal RDF schema defined by the RDF API and RDF CCK. When visiting a node, it is synchronized with the RDF endpoint where the data originates from. Although this module can also act as an import module, it performs more than a regular import as it is able to keep track of the source of the data. An example use case is the ability to instantiate lists of publications from the DBLP SPARQL endpoint.

By leveraging the capabilities of RDF, this module will be able to instantiate complex structured data (graph) allowing for mass import of heterogeneous instances and their relationship. One query could instantiate all the pubs located in Paris with their address, picture, beers available, owner; this would create a node for each pub and each owner, and link the relevant pub nodes to their owner nodes via CCK Node references.