Soprano 1.90.0 beta1 released

The Soprano team is proud to present the first preview release of the next generation of Soprano, the object-oriented RDF framework. A lot of effort and work has gone into Soprano 2 and the result is a highly usable and intuitive API that fulfills all your RDF needs.

Soprano is an object-oriented RDF framework written entirely in C++/QT4. It is targetted at applications that need RDF data storage on the desktop.

Soprano 2 introduces these new features and improvements:

  • Highly improved API: fully iterator-based, new FilterModel design which allows to easily stack different RDF filters on top of Models.
  • Better plugin design: Soprano 2 features five different kinds of plugins:
    1. Backend plugins do the actual RDF data storage
    2. Parser plugins are used to parser encoded RDF data into Soprano statements
    3. Serializer plugins are the exact counterpart to parser plugins: they serialize Soprano RDF statements into encoded RDF data
    4. Query parser plugins provide support for different query languages
    5. Query serializer plugins are the exact counterpart to query parser plugins: they serialize a Soprano query object into different query languages.
  • Vocabulary namepaces contain static QUrl objects for most frequently used URIs from RDF, RDFS, or XML Schema
  • Soprano 2 has a rule-based forward-inference engine that is implemented as a filter model and comes with predefined rulsets for RDFS and NRL
  • The CLucene index provides a full text query index for all literal statements including CLucene scoring.
  • Soprano 2 features a server/client architecture which allows to run an RDF storage remotely. Interfaces for communication over TCP, unix sockets, and DBus are provided in an easy-to use API.
  • The Soprano 2 API is fully documented using doxygen. The build target "apidox" creates the documentation as HTML pages.
  • Soprano 2 comes with two full-features backend plugins: redland and Sesame2. (A third, unfinished backend using 3Store may be removed for the Soprano 2 final release)