+1 ...ant
On Mon, Nov 23, 2009 at 6:32 PM, Reto Bachmann-Gmür <reto.bachm...@trialox.org> wrote: > Please vote on accepting Apache Clerezza for incubation at the Apache > Incubator. The full proposal is available at the end of this message and > as a wiki page at http://wiki.apache.org/incubator/ClerezzaProposal > <http://wiki.apache.org/incubator/AceProposal>. We ask the Incubator PMC > to sponsor it, with Bertrand as the Champion, and Gianugo, Niclas, Ross, > Karl and Reinhard volunteering to be Mentors. > > Please cast your votes: > > [ ] +1, bring Clerezza into Incubator > [ ] +0, I don't care either way, > [ ] -1, do not bring Clerezza into Incubator, because... > > The vote is open for the next 72 hours and only votes from the Incubator > PMC are binding. > > - - - - - - - - - - > > Abstract > > Clerezza is an OSGi-based modular application and set of components > (bundles) for building RESTFul Semantic Web applications and services. > > Proposal > > Clerezza can be used as a platform providing all the compile and runtime > requirement for building semantic applications, or used as individual > bundles within an OSGi framework, e.g. Apache Sling, Apache ServiceMix, > or the Eclipse platform. > > Clerezza provides: > > * An API modeling the W3C RDF standard without any vendor specific > additions. > * Adapter for various triple stores including Sesame, Jena TDB, and > Mulgara. > * Front-End adaptors, currently to run applications written against > the Jena API. Support for RDF2Go is planned. > * A JAX-RS implementation designed to work in an OSGi environment > and allowing to provide Root-Resources as OSGi services. > * Web access to RDF graphs, including a SPARQL-Endpoint. > * Extensions to JAX-RS allowing to bind Root-Resource classes to > specific RDF-Types rather than to URI-Paths. > * Templating mechanism (Renderlets) allowing to render RDF resources > returned by JAX-RS resource methods to various formats > * > > Support for Scala for writing modules, ScalaServerPages to easily > write renderlets, DSL for accessing graphs. > * Authentication and authorization based on JAAS and OSGi > Conditional Permission Admin > * Support for user bundles: Users can have a permission to upload > their own sandboxed bundles. The URI space these bundles are allowed to > register their JAX-RS resources can be limited with a prefix. > * Scripting: Scripting based on javax.script (currently support for > JRuby and Scala) > * Documentation: Bundles can provide their documentation in RDF. > These are used for online documentation as well as for building Maven > sites (with a Maven reporting plugin) > > The RDF abstraction layer can be used independently of other aspects of > Clerezza. It allows applications to be written regardless the used > backend. In its purpose, it is similar to RDF2Go, but provides a > significantly more modular interface allowing e.g. to independently > switch the storage, querying, or serialization layer. Furthermore, it > doesn't introduce concepts alien to the RDF model such as blank node > labels, but is in its core strictly limited to RDF semantics. > > The JAX-RS implementation can also be used independently of any other > components. It allows OSGi services to provide a RESTful interface to > their methods. By being based on wymiwyg WRHAPI, it can run both on the > default OSGi Web Service as well as on a jetty instance listening on a > different port. > > Background > > The current web trends focusing on information sharing, interoperability > and collaboration. Therefore the behaviour of the end-user has changed > over the last years: end-users not only consuming information they also > producing content anytime anywhere - in contrast to non-interactive > websites where users are limited to the passive viewing of information > that is provided to them. Since the end-users are sensitized to the > possibilities of the web the web application requirements increases. > Examples of such applications are social-networking sites, wikis, blogs > and mashups. > > The REST paradigm and Semantic Web technologies support these trends and > form the basis for the upcoming Web of Data (a.k.a. linked data, Web > 3.0). They change the paradigms for developing complex Web applications. > Clerezza allows to develop applications that integrate perfectly in the > Semantic Web providing all accessible resources in machine > understandable formats without imposing additional burdens on the > developer. Additionally, thanks to the flexibility of the RDF model used > as back-end, some tedious database related tasks required for > traditional Web application development are no longer needed. > > Rationale > > Most Web application framework are not designed to leverage the full > power of HTTP but often try to reproduce non Web design patterns for the > Web environment. In general, application frameworks are oriented towards > relational or hierarchical data structures. While attempts to overcome > this such as Drupal have become very popular, they do not at their core > base on the stack of Semantic Web standards. Clerezza will prove that > the flexibility of the RDF doesn't result in increased complexity, but > on the contrary allows for fast prototyping and development. > > Initial Goals > > The initial goals for Clerezza are: > > * Donate the existing codebase and import it. > * Setup the incubation infrastructure (svn repository, build system, > website), so we can run continuous builds with automated tests and > publish all available documentation. > * Get people involved in advancing the code base in different > directions, integrating it with other projects at Apache. > * Prepare for an initial release that demonstrates the systems core > capabilities. > > Current Status > > The current codebase is developed and tested using Apache Felix. It has > been developed intensively and reviewed at trialox since August 2008 > using Scrum, with a development process emphasizing individual > accountability and reviews. We have internally demonstrated that we can > release codes as scheduled. Platform core functionalities are available, > however the need for new features may arise, performance and robustness > could be improved. Incomplete documentation for the project is available > with the individual artifacts, both in the generated maven sites as in a > version available exposed by Clerezza at runtime. We also have a wiki at > http://wiki.trialox.org with some information mainly on the development > process. We also use mailing lists for communication among developers > and users. > > Meritocracy > > The core developers understand what it means to have a process based on > meritocracy. We will provide continuous efforts to build an environment > that supports this, encouraging community members to contribute. > > Community > > Trialox has been developing the current codebase since August 2008. > Trialox was founded in partnership with the University of Zurich and > could benefit from previous research work at the Department of > Informatics. Part of the team from the beginning was Reto Bachmann Gmür > who has been developing open source Semantic Web applications for many > years, including working with the Jena team at HP Labs. > > Trialox has contributed to the JAX-RS specification. Some of the code > written by trialox is used by Open Source projects such Paxle and Gradino. > > Clerreza is used by globally active non-profit organisations such as the > WWF. These organisations have strong developer networks including > motivated volunteers, which will contribute to Clerezza. > > Core Developers > > People from Trialox, the University of Zurich, as well as partner > companies of Trialox have contributed to the project. Currently, the > following persons are core developers of Clerezza: > > * Manuel Innerhofer, Developer at Trialox since November 2008. > * Hasan Hasan, Developer and Senior Researcher at University of > Zurich since 2006, developing Clerezza since August 2008. His current > research interests cover P2P networking, Service Level management, and > Internet security. > * Tsuyoshi Ito, Developer and Scrum Master at Trialox, developing > Clerezza since August 2008. He has researched at the University of > Zurich since 2005. His research interest was computer-supported Learning > (Educational Engineering) > * Reto Bachmann-Gmür, Developer and Architect at Trialox, developing > Clerezza since August 2008. > > Alignment > > We provide a launcher which runs Clerezza's bundles within Apache Felix. > We also provide feedback about the usage of Apache Felix and its > components including the framework security via the mailing list. For > building Clerezza's bundles we use Apache Maven and various plugins. We > also have developed a plugin to help managing projects which contain > ontologies, so that Java classes representing those ontologies can be > pre-compiled. Other projects which based on Web services and/or RDF can > benefit from Clerezza or its specific bundles. We are open to > collaborate with other Apache projects which can benefit from > functionality provided by Clerezza. Clerezza has the advantage of being > very modular and independent of application frameworks, thus can be > easily integrated with other Apache projects. UIMA and Tika come to > mind, as they would help extract semantic information from various data > types and formats. An alignment to the JAX-RS implementation in Apache > CXF could not only help removing the dependencies to the CDDL-licensed > code taken from Jersey but also help providing a fully framework > independent implementation with a larger group of developers and thus > higher quality. > > Known Risks > > The current team of Clerezza core developers is small, but being an > innovative project in the semantic "space", we are confident that > Clerezza can attract new developers. > > Clerezza has been started as an Open Source project providing mercurial > repository for public access to source codes and also a publicly > accessible JIRA instance for issues tracking. Clerezza is licensed since > project begin under Apache License version 2.0. Some of the initial > committers already have strong experiences with Open Source software > development. Others, while not being totally inexperience, are willing > to learn. > > The risk that Clerezza will be an orphaned product is considered small. > Three main factors will avoid this to happen: > > * Trialox and its founder Getunik have a vital interest in continuos > development in this open source foundation > * Clerezza is used as foundation for research as well a student > projects at the University of Zurich > * There is a strong commitment by Reto Bachmann-Gmür to maintain > Clerezza > * WWF expressed their support to deploy Clerezza > > Documentation > > A small set of further documentation is available under the following links: > > * > http://trialox.org/projects/org.clerezza.rdf.core/documentation/overview.xhtml > * > http://trialox.org/projects/org.clerezza.triaxrs.parent/org.clerezza.triaxrs/documentation/ > > > Initial Source > > Clerezza has been in development since mid 2008. Public access to the > source is provided through http://scm.trialox.org/. > > Source and Intellectual Property Submission Plan > > The current codebase is owned by trialox, and will be donated together > with its documentation. We will get the paperwork out of the way as soon > as possible. > > External Dependencies > > There are quite a few open source libraries already used. They have > Apache compatible licenses, with one issue to solve around Jersey which > is CDDL. > > The libraries, their sources and licenses are listed here: > > Apache Felix, ASL: > > * Framework > * Framework Security > * Configuration Admin > * maven-scr-plugin > * maven-bundle-plugin > > OSGi Alliance, ASL: > > * Core > * Compendium > > Apache Maven, ASL: > > * apache-maven > > Eclipse, ASL: > > * Jetty > > OPS4J, ASL: > > * Pax Exam > * Pax Logging > * Pax protocol mvn-uri > > WYMIWYG, ASL: > > * wrhapi > * wymiwyg-commons > > jQuery, MIT license: > > * jquery > > Hewlett-Packard Development Company, BSD License: > > * Jena (for the optional jena forntend adaptor, as well as for jena > based serializer/parser) > * Jena TDB (for the optional tdb backend adaptor) > > OpenRDF.org, BSD license (for the optional sesame backend adaptor): > > * Sesame > > Mulgara.org, Open Software License ("OSL") v. 3.0 (for the optional > mulgara backend adaptor): > > * mulgara > > XSite (http://xsite.codehaus.org/), BSD license: > > * xsite-maven-plugin > > Jersey (https://jersey.dev.java.net/), CDDL license > > The current code bases on code licensed under the CDDL, according to > http://apache.org/legal/resolved.html we understand we have to get rid > of these before making a release, or redistribute in binary form only. > The following files are affected. > > * QualityFactor.java > * HttpDateFormat.java > * HttpHeaderReaderImpl.java > * UriPattern.java > * UriComponent.java > * HttpHeaderListAdapter.java > * MultivaluedMapImpl.java > * HttpHeaderReader.java > * ByteArrayProvider.java > * SourceProvider.java > * AbstractMessageReaderWriterProvider.java > * StreamingOutputProvider.java > * FormMultivaluedMapProvider.java > * FileProvider.java > * ReaderProvider.java > * InputStreamProvider.java > * MediaTypeProvider.java > * EntityTagProvider.java > * CacheControlProvider.java > * NewCookieProvider.java > * CookieProvider.java > > Required Resources > > Mailing lists: > > * clerezza-dev > * clerezza-commits > * clerezza-user (only after leaving the incubator) > > Subversion: > > * https://svn.apache.org/repos/asf/incubator/clerezza > > Issue Tracking: > > * JIRA: Apache Clerezza (Clerezza) > > Initial Committers > > These committers have either worked on the initial codebase (Reto, > Immanuel, Tsuy, Hasan) or expressed an interest in extending the project: > > * Reto Bachmann-Gmür (trialox) > * Manuel Innerhofen (trialox) > * Tsuyoshi Ito (trialox) > * Hasan Hasan (University of Zurich) > * Bertrand Delacretaz (ASF member, Day Software) > * Michael Marth (Day Software) > * Tommaso Teofili (Apache UIMA committer) > > Affiliations > > Manuel Innerhofen, Tsuyoshi Ito and Reto Bachmann-Gmür work at trialox > and might get paid to work on Clerezza. > > Hasan Hasan from University of Zurich is paid to work in a project that > is based on Clerezza. > > Michael Marth and Bertrand Delacretaz work for Day Software. > > Sponsors > > We have approached both the champion and an initial list of mentors that > have agreed to mentor this project. > > Champion: > > * Bertrand Delacretaz > > Mentors: > > * Gianugo Rabellino > * Niclas Hedhman > * Ross Gardler > * Karl Pauls > * Reinhard Pötz > > Sponsor: > > * Apache Incubator > > -- > Reto Bachmann-Gmür > trialox.org > Tel: +41445005015 > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: general-unsubscr...@incubator.apache.org > For additional commands, e-mail: general-h...@incubator.apache.org > > --------------------------------------------------------------------- To unsubscribe, e-mail: general-unsubscr...@incubator.apache.org For additional commands, e-mail: general-h...@incubator.apache.org
