- From: Martynas Jusevicius <martynas@graphity.org>
- Date: Tue, 24 Jul 2012 11:26:46 +0200
- To: Semantic Web <semantic-web@w3.org>, public-lod@w3.org, public-ldp@w3.org
Hey all, I'm pleased to announce Graphity -- a fully extensible generic Linked Data platform for building end-user Web applications. Rationale ====== Graphity started as JAX-RS [JAX] and Jena-compatible framework, since there was a lack of RDF and Linked Data tools in PHP. It was created while developing http://heltnormalt.dk (one of the biggest online entertainment sites in Scandinavia and another successful Linked Data business case), later open-sourced and presented at the W3C Linked Enterprise Data Patterns workshop [LEDP]. Since then the development has moved to Java and focused on application components for building Linked Data consumer webapps. The LOD cloud is growing exponentially [LOD], which means publishing is not an issue anymore as we're entering LD consumption phase. Design ===== Graphity was designed for compatibility with established standards and APIs such as Jena, JAX-RS , SPIN [SPIN], and RDF/POST [RP]. It tries to create as few new conventions as possible. The code is generic and offers extensibility and flexibility without the bloat often found in other tools. It is possible because Graphity does not have any object model above the RDF level and can do a full read/write data roundtrip in RDF. This eliminates data model mismatches (as in object/relational/XML/RDF) and conversions that result in development time and bugs (think ORM). The current Web 2.0 API many-to-many integration approach can be replaced by pivotal integration, using RDF as the central data model and Graphity as the RDF gateway. As the data volumes grow, this has linear costs instead exponential. Usage ===== The code is open-source under GPL license an can be found on GitHub along with more documentation: https://github.com/Graphity/graphity-browser This release bundles the core packages with a JAX-RS webbap built on it -- a Linked Data browser, which is also a basic implementation of the Linked Data Platform [LDP]. Download .jar to include Graphity in your project, or .war to run the standalone webapp. Browser demo can be seen here (note: DBPedia can be slow, and the server is not production-grade): http://semanticreports.com/?uri=http%3A%2F%2Fdbpedia.org%2Fresource%2FCopenhagen 3rd party webapps can be built on Graphity Browser by simply extending JAX-RS resources and overriding the necessary methods, as well as including the XSLT stylesheets and overriding the templates -- or using a custom web application and/or XSLT layout altogether. In this way, Graphity can be used to build triplestore-backed data mgmt systems and publishing portals, semantic CMS, Linked Data analytics and visualizations, tools for integration of Web 2.0 APIs as Linked Data etc. Users of Apache Clerezza, IKS, Elda, Callimachus, Information Workbench and similar tools might might find Graphity interesting. The core package is also available in PHP (and includes probably the first basic implementation of JAX-RS in PHP) under Apache license: https://github.com/Graphity/graphity-core Call for collaboration ============== Feedback is greatly appreciated. Bugs and feature/improvement suggestions can be filed here: https://github.com/Graphity/graphity-browser/issues We can also be found on Twitter: https://twitter.com/graphityhq We welcome suggestions and open-source contributions, for the Java packages as well as XSLT stylesheets, for example new GRDDL converters or user experience improvements for specific datasources/and or vocabularies. References ======== [LEDP] http://www.w3.org/2011/09/LinkedData/ledp2011_submission_1.pdf [LOD] http://richard.cyganiak.de/2007/10/lod/ [JAX] http://jcp.org/en/jsr/detail?id=311 [SPIN] http://topbraid.org/spin/api/ [RP] http://www.lsrn.org/semweb/rdfpost.html [LDP] http://www.w3.org/2012/ldp/charter.html Martynas Jusevicius graphity.org semantic-web.dk
Received on Tuesday, 24 July 2012 09:27:17 UTC