FUSION approach aims to tackle this issue in a more unified way through the
implementation of a PSR. PSR is a variation of a classic registry (UDDI, ebXML)
that can store additional semantic metadata that accompany the Web service description
model. PSR handles ebXML v.2.5 and UDDI v.3. At first all the entries
of each registry are converted into OWL-S ontologies with additional classes. The
persistence model of PSR is not based in a database but in an integrated ontology.
Service discovery within the ontology is made using RDQL queries. The semantic
registry utilizes Jena10 for storage and discovery. Jena is a Java framework for writing
Semantic Web applications developed under HP Labs Semantic Web Programme.
It features:
??? statement-centric methods for manipulating an RDF model as a set of RDF
triples,
??? resource-centric methods for manipulating an RDF model as a set of resources
with properties,
??? cascading method calls for more convenient programming,
??? built in support for RDF containers??”bag, alt, and seq,
??? enhanced resources??”the application can extend the behavior of resources,
??? integrated parsers and writers for RDF/XML (ARP), N3, and N-TRIPLES,
and
??? support for typed literals.
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