Thanks Markus that's really good news. I'll keep those restrictions in mind. Really large n-ary properties would anyway be very much the exception.
Thanks again for your great SMW effort. Cheers, Gu Quoting Markus Krötzsch <mar...@semantic-mediawiki.org>: > On Donnerstag, 4. März 2010, zehet...@molgen.mpg.de wrote: > > Hi, > > > > well the number of possible fields in n-ary properties is a make or break > > criteria for me to be able to use MW/SMW, so it's a point I don't dare to > > lose out of sight. > > > > Right now the largest properties I added to the wiki have 15 to 20 fields > > (but there are potential data with 60+). > > 'Unlimited' sounds too good to ask for ;) but a number below 20 would > > certainly not allow me to update. > > I have now extended the implementation to support "arbitrary" length records. > > Of course, the length is still restricted by a number of practical > considerations. As I explained before, you cannot have arbitrarily long > record > declarations simply because the space that is available to store the value of > > "has fields" is limited. This is the same as with "has type" before. > > Moreover, you cannot have query conditions with large records where all > values > are constrained in some way because SMW does not allow such large queries by > > default. You could of course change this setting, but it is not recommended > to > do this. Since SMW cannot create custom tables for your large records 8this > would mean to change the DB schema on the fly), the data is always > distributed > over many shorter tables, and joining +20 of them slows down MySQL > significantly even if they are small and highly selective. Again, this is the > > same as in earlier versions of SMW. > > Finally, records that large just look wrong and are hardly unusable in > browsing and querying interfaces. Their syntax/display is not tailored toward > > such sizes, as they were meant to provide short compounds with five or less > elements. > > Anyway, I have tested the code with a 24-field record now and it still works. > > > Regards, > > Markus > > > > > Cheers, > > Gu > > > > Quoting Markus Krötzsch <mar...@semantic-mediawiki.org>: > > > On Donnerstag, 4. März 2010, zehet...@molgen.mpg.de wrote: > > > > Hi Markus, > > > > > > > > http://semantic-mediawiki.org/wiki/Semantic_MediaWiki_1.5.0 > > > > > > > > doesn't mention any restriction in the number of 'fields' of an n-ary > > > > property as it was mentioned in earlier announcements. > > > > > > > > Has this new limitation been implemented in 1.5 and if so, what is the > > > > limit and any advice how to convert larger 1.4 n-ary properties to > > > > 1.5? > > > > > > Oh, you are very observant. I have left this away since I am not certain > > > yet > > > > > > if I can provide support for records of unlimited size for 1.5.0 or not. > > > If not, then I can only advice users of larger records to not upgrade > > > until a fix > > > has been found. How large were your records again? > > > > > > -- Markus > > > > > > > Quoting Markus Krötzsch <mar...@semantic-mediawiki.org>: > > > > > Hi all, > > > > > > > > > > we plan to release SMW 1.5.0 within the next few days. Two or three > > > > > issues still are on my list for being fixed, but most of the code > > > > > should be ready now. Moreover, there has just been a new release of > > > > > Semantic Maps, and there > > > > > > > > > > will soon be a release of Semantic Forms. > > > > > > > > > > Testers are welcome. I know that many people are running the SVN > > > > > version anyway, but it may now be a good time to checkout the most > > > > > recent > > > > > > updates > > > > > > > > and > > > > > > > > > > to confirm that all functions that are important to your wiki are > > > > > > running > > > > > > > > as > > > > > > > > > > expected. Information on how to upgrade can be found on the > > > > > preliminary release page: > > > > > > > > > > http://semantic-mediawiki.org/wiki/Semantic_MediaWiki_1.5.0 > > > > > > > > > > Last minute feedback can be sent to this list, or filed to the > > > > > bugtracker. Translations to the static translation files are also > > > > > welcome, but we also will have a 1.5.1 release not too long after > SMW > > > > > 1.5.0 to be able to incorporate such improvements. > > > > > > > > > > Cheers, > > > > > > > > > > Markus > > > > > -- > Markus Krötzsch <mar...@semantic-mediawiki.org> > * Personal page: http://korrekt.org > * Semantic MediaWiki: http://semantic-mediawiki.org > * Semantic Web textbook: http://semantic-web-book.org > -- > ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Semediawiki-devel mailing list Semediawiki-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/semediawiki-devel
