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Subject: Re: [office] Announcement of work on ODF 1.2 metadata feature adoptions
Dear TC members, I have divided the changes mentioned below into four minor proposals and added them to our ODF 1.2 task list [1]. The proposals will be finalized till 10th of December including all suggested wordings. Regards, Svante [1] http://wiki.oasis-open.org/office/OpenDocument_v1.2_tasks Svante Schubert wrote: > After the review of our RDF metadata feature by the inventors of RDF, > the W3C Semantic Web Interest Group (SWIG), two weeks ago at the TPAC > 2008, I received a lot of positive feed-back. > > Nevertheless even good features have potential of improvement, > therefore I have three subjects I am working on to bring the ODF RDF > feature to close perfection, driven by the feed-back from SWIG and Tim > Berners-Lee especially. > > Here the rough descriptions of the three topics, a detailed proposal > will follow: > > 1) > We are using RDFa attriubtes and the W3C RDFa spec [1] has received > Recommendation status less than 3 weeks ago. > The usage of the four RDFa elements can now be done accordingly to the > W3C spec. Even with XHTML namespace due to the XHTML modularization > statement that all no namespace XHTML attributes can rather use the > XHTML namespace [2]. > The usage of the attribute definitions from the original spec will > give us furthermore the abbreviation mechanism as compact URIs (CURI), > which can help a lot in large spreadsheets. > Other RDFa features, e.g. Chaining [3], are rather meant for DOM > applications and will not apply to ODF applications. > > 2) > Although ODF applications do not need this for themselves, we should > help other none-ODF RDF applications to receive the RDF graphs from > our package, to let ODF become successful. > For this reason I will work on two XSLT transformations (according to > the W3C GRDDL standard [4]) that will help foreign users/crawlers to > extract RDF data from ODF. > My basic idea is that styles.xml and content.xml will receive a > reference to one XSLT stylesheet based on [5] to extract RDFa and > another XSLT for the meta.xml, making RDFa statements from every > sub-element of office:meta (e.g. <document> meta:creation-date > "2007-05-10T18:18:56".). > ODF application should ignore these GRDDL attributes located at the > root element, with an URL pointing to the stylesheet somewhere hosted > at OASIS. These stylesheets are only guidance for foreign applications. > > 3) > The SWIG where rather puzzled by the usage of generated URNs in the > ODF/RDF examples. The web lives from URLs, so will be the Semantic > Web. Aside of this, there is a design rule in the "Architecture of the > World Wide Web" not to create alias [6]. Everybody strongly suggested > to use relative URLs within the package and to reference to the > resources within the package with URLs. > Unfortunately that triggers the problem of referencing from outside > inside the ODF package by URLs, when making these relative URLs absolute. > > In general there are three possibilities: > a) Using an URL that thinks of a package similar as an directory > b) A package schema similar to 'jar:' that has never been standardized > c) Create own fragment identifier for our mimetypes. > > Currently I believe a) & b) are valid and desired options, but out of > the scope of our TC (not to mention the time frame), therefore I have > asked to discuss this general package related problem at the W3C Web > Technical Architecture Working group (further details at [7] and thread). > > I am currently at the OpenOffice.org Conference in Beijing, I would be > happy to discuss these topics with you face to face, but would ask the > group not to start a larger discussion on these topics until a > detailed proposal is given to the TC to base a discussion on. > > Regards, > Svante > > [1] http://www.w3.org/TR/rdfa-syntax/ > [2] > http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_commonatts > > [3] http://www.w3.org/TR/rdfa-syntax/#sec_5.3. > [4] http://www.w3.org/TR/grddl/ > [5] http://www.w3.org/2008/07/rdfa-xslt > [6] http://www.w3.org/TR/webarch/#avoid-uri-aliases > [7] http://lists.w3.org/Archives/Public/www-tag/2008Oct/0126.html > > > Sun Microsystems GmbH Svante Schubert > Nagelsweg 55 Software Engineer > 20097 Hamburg StarOffice / OpenOffice.org Development > Germany Phone: +49(0)40 236 46 500 > http://www.sun.com Svante.Schubert@sun.com > > Sitz der Gesellschaft: > Sun Microsystems GmbH, Sonnenallee 1, D-85551 Kirchheim-Heimstetten > Amtsgericht Muenchen: HRB 161028 > Geschaeftsfuehrer: Wolfgang Engels, Dr. Roland Boemer > Vorsitzender des Aufsichtsrates: Martin Haering > > > --------------------------------------------------------------------- > To unsubscribe from this mail list, you must leave the OASIS TC that > generates this mail. Follow this link to all your TCs in OASIS at: > https://www.oasis-open.org/apps/org/workgroup/portal/my_workgroups.php
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