+1 Regards Felix
Am Mittwoch, den 17.11.2010, 13:10 +0000 schrieb Ross Gardler: > Please vote on the acceptance of JENA into the incubator. The proposal > can be found at http://wiki.apache.org/incubator/JenaProposal and is > copied below. > > [ ] +1 Accept Jena for incubation > [ ] +0 Don't care > [ ] -1 Reject for the following reason: > > The vote is open for at least 72 hours. > > Thanks, > Ross > > = Jena, a Semantic Web Framework = > == Abstract == > Jena is a semantic web framework for Java, based on W3C standards. > > == Proposal == > Jena provides a semantic web framework in Java that implements the key > W3C recommendations for the core semantic web technologies of RDF and > SPARQL. Jena is a number of components and modules built on this core > system. It currently includes: > > * an API for working with RDF > * Parsers and writers for the RDF formats (RDF/XML, Turtle, N-triples, > NQuads, TriG) > * an implementation of SPARQL, the W3C standard RDF query language > * multiple storage systems for RDF data including in-memory, > file-backed, in SQL databases and in custom scalable storage systems > * an API for manipulation of OWL > * a rule-based inference engine > * an implementation of GRDDL for extraction of RDF from XML formats > * a standards compliant IRI library. > > The project includes facilities based around this core to encourage the > creation of components and contributions both as part of Jena and also > as companion open source activities. > > This proposal includes the main components of Jena: the main Jena > download, ARQ, GRDDL, SDB, TDB, the IRI library and Joseki. Other > components may be contributed later - we're just starting with the main > part of Jena for now. > > == Background == > The W3C recommendations provide detailed specifications and it is > important to follow these standards so that independently built > applications can exchange data over the web. Jena provides high quality > Java implementations of RDF input/output and storage so that > application writers can concentrate on the application, not the > low-level details. > > W3C Semantic Web: http://www.w3.org/standards/semanticweb/ > > Jena has been on !SourceForge since 2001. > http://sourceforge.net/projects/jena/ > > == Rationale == > The open source project was originally created as part of a research > activity in HPLabs. In building new systems, the researchers identified > the value of a common platform that dealt with the low level details > of the standards. This lead to engagement with the standards process > and the creation of a framework that provided a library to deal with > the details of semantic web standards. This work was released as Jena. > The developers have contributed implementation experience back to the > working groups. > > None of the contributors now work for HP. Providing a uniform > contributor and licensing framework assists commercial use of Jena. > > == Current Status == > Jena is already an established project with a large user base in > industry and academia. It currently uses a BSD-style three-clause > license with a number of contributing copyright holders. Support is > primarily provided via the jena-...@groups.yahoo.com mailing list. The > majority of the team was employed in HPLabs, and HP holds the majority > of the copyright over the code - there are contributions from non-HP > companies. HP decided to close the research group as of October 2009 > and the people from HPLabs connected with the project have moved on to > several different semantic web companies. > > This change does not immediately affect Jena because the people who were > in HP still remain active contributors to Jena. The project continues > to be supported and actively enhanced. There is now the opportunity to > become an open source project without a single large organisation involved. > > === Meritocracy === > The Jena team has always been self-determining; there has not been a > project manager in charge of the effort. Instead, it has grown through > individuals contributing to the codebase as part of their research > activities. The team has organised itself to create the framework for > builds, releases and public support, and people who had worked on Jena > in HP, and moved to other companies and institutions, have continued to > contribute. > > === Core developers === > Jena originated within a research activity in HPLabs, starting around > 2000. Contributors to jena have been active in W3C working groups > including chairing the "RDF Core" working group and acting as document > editors on several other working groups. W3C processes are public; jena > contributors have been involved in public debate and decision making. > People have since moved on from HP to several semantic web forced > companies and to university positions. > > === Alignment === > Jena is already in use in many commercial systems as well as widely used > in academic research and teaching. We want to continue making this > easy and at the same time encourage contribution in a well-known > environment. > > Jena is already pretty much run in a collaborative open development > style with communication on mailing lists. > > == Known Risks == > === Orphaned products & Reliance on Salaried Developers === > Jena is in use by companies we work for so the companies have an > interest in its continued vitality. > > The Jena team members are not employed to work on Jena specifically; > while there is some development as part of their day-jobs, the team > members do also contribute personal time as well. > > === Inexperience with Open Source === > While Jena has been open-source since 2001, the majority of individuals > involved do not have wide experience of contributing to other open > source projects, so the team members need to develop more skills in > participating in open-source communities. > > === Relationships with Other Apache Products === > Jena uses Xerces, Lucene, Apache Commons HttpClient and Apache Commons > FileUpload. > > Jena is used by Clerezza (in incubation). > > === A Excessive Fascination with the Apache Brand === > Jena has an established community of users and is used in both academic > and commercial settings. The Apache environment offers Jena the > opportunity to expand the ways that more people can be involved and > contribute, and hence to ensure the project is not dependent on the > current members. We hope that association with Apache will also > encourage other open source projects that use Jena to help develop a > healthy and vibrant semantic web open source ecosystem. > > Apache offers us a clear licensing framework and support infrastructure > which would reassure the many users of Jena who exploit it in commercial > environments as well as those in other open source projects. > > == Documentation == > Overview documentation, tutorials, topic-based how-tos and detailed > !JavaDoc can be found at http://openjena.org/ > > == Initial Source == > The majority of the current codebase resides in the Jena project CVS/SVN > on !SourceForge. Joseki is also on !SourceForge; we later decided to > put all projects under one SF project so this is a historical anomaly. > The modules in the initial source are: > > * [[http://jena.cvs.sourceforge.net/viewvc/jena/|Jena CVS area on > SourceForge]] > * jena2 (the core system, include RDF, rules and OWL subsystems) > * iri (the IRI library) > * Eyeball and !EyeballAcceptance (a checker for RDF) > * [[http://jena.svn.sourceforge.net/viewvc/jena/|Jena SVN area on > SourceForge]] > * ARQ (SPARQL query and update engine) > * Fuseki (SPARQL server) > * grddl (GRDDL implementation for Jena) > * SDB (SQL database layer for Jena) > * TDB (customer storage layer for Jena) > * Ymris (experimental rules engine) > * Experimental/Jena3 (experiment reorganisation of jena) > * [[http://joseki.cvs.sourceforge.net/viewvc/joseki/Joseki3/|Joseki > CVS area on SourceForge]] > * Joseki3 module. > > == Source and Intellectual Property Submission Plan == > We are in discussions with HP, the largest copyright holder, about > licensing to Apache and currently HP has indicated that it is willing to > do so in principle. > > The initial committers overtake to resolve all IP and copyright issues > that concern the dependencies of the initial source and of any > contributions in accordance with Apache requirements for graduating from > incubator status. > > All contributions to the Jena codebase are under BSD-style license. The > majority of copyright is held by HP. Some copyright is held by others, > as noted in the codebase. This includes contributions from the initial > committers below and any other contributions. > > > > == External Dependencies == > Details of license of components used by Jena are available at: > http://openjena.org/Licenses/index.html > > The Jena GRDDL Reader has some additional dependencies: > http://jena.sourceforge.net/grddl/license.html > > We are heavily dependent on Xerces for both parsing and also for XML > datatype support. > > == Cryptography == > No specific cryptography. > > == Required Resources == > Mailing lists > > * jena-private (with moderated subscriptions) > * jena-dev > * jena-commits > * jena-user > > Subversion Directory > > * jena > > Issue Tracking > > * JIRA > > Other Resources > > * Hudson > > == Initial Committers == > The intial committers are the currently active developers for Jena. > > * Chris Dollin > * Paolo Castagna > * Damian Steer > * Jeremy Carroll > * Ian Dickinson > * Dave Reynolds > * Andy Seaborne > > == Affiliations == > * Epimorphics Ltd: Dave Reynolds, Ian Dickinson, Chris Dollin, Andy > Seaborne > * Talis Systems Ltd: Paolo Castagna > * University of Bristol: Damian Steer > * TopQuadrant Inc: Jeremy Carroll > > == Sponsors == > === Champion === > Ross Gardler (rgardler .at. apache.org > > === Nominated Mentors === > * Bertrand Delacretaz (bdelacretaz .at. apache.org) > * Leo Simons (leosimons .at. apache.org) > * Dave Johnson (snoopdave .at. gmail.com) > * Benson Margulies (bimargulies .at. gmail.com) > > === Sponsoring Entity === > Incubator PMC > > --------------------------------------------------------------------- To unsubscribe, e-mail: general-unsubscr...@incubator.apache.org For additional commands, e-mail: general-h...@incubator.apache.org
