Re: [Aperture-devel] ModelAccessData problem

[Leo S. <leo...@df...>]

Hi Florent,

it seems that you did everything right.
all models should be opened, repository initialized, etc.

I am not too deep into ModelAccessData, but does this need any 
configuration settings?

note that we found some (many) bugs in the setup of 
aperture-rdf2go4.4-rdf2goadapterForSesame-sesame2.beta2. All elements in 
this chain are somehow buggy, sesame is the most stable.

Your problem probably lives somewhere in between this chain, this week 
we are bugfixing the rdf2goadapterForSesame and rdf2go4.4.0. I think we 
will have a "fixed" release of all parts included sometimes in March ... 
perhaps April....

if you can drill the bug down, we are happy to fix it, otherwise it may 
be just as good to use FileAccessData , ModelAccessData seems to be 
experimental anyway.
When these issues remain in the upcoming release, we have better chances 
fixing them (all the parts in the chain will be more stable and 
trustable then).

hth
Leo



It was Florent Jochaud who said at the right time 15.03.2007 11:46 the 
following words:
> Hi,
>
> I'm trying to set up incremental crawling using ModelAccessData with a
> sesame native store.
>
> So, I do something like this :
>
> File accessDataDirectory = new File("path");
> Repository accessDataRepository = new SailRepository(new
> NativeStore(accessDataDirectory));
> accessDataRepository.initialize();
> Model AccessDataModel = new RepositoryModel(accessDataRepository);
> AccessDataModel.open();
> ModelAccessData accessData = new ModelAccessData(AccessDataModel);
> crawler.setAccessData(accessData);
>
> And then it reach an exception, here is the stacktrace :
>
> java.lang.IllegalArgumentException: value parameter should be a URI, BNode
> or Literal
> 	at
> org.openrdf.sail.nativerdf.ValueStore._value2data(ValueStore.java:452)
> 	at
> org.openrdf.sail.nativerdf.ValueStore.storeValue(ValueStore.java:331)
> 	at
> org.openrdf.sail.nativerdf.NativeStoreConnection.removeStatementsInternal(Na
> tiveStoreConnection.java:511)
> 	at
> org.openrdf.sail.helpers.SailConnectionBase.removeStatements(SailConnectionB
> ase.java:316)
> 	at
> org.openrdf.repository.sail.SailRepositoryConnection.removeWithoutCommit(Sai
> lRepositoryConnection.java:269)
> 	at
> org.openrdf.repository.AbstractRepositoryConnection.remove(AbstractRepositor
> yConnection.java:240)
> 	at
> org.openrdf.rdf2go.RepositoryModel.removeStatement(RepositoryModel.java:240)
> 	at
> org.semanticdesktop.aperture.accessor.base.ModelAccessData.remove(ModelAcces
> sData.java:328)
> 	at
> org.semanticdesktop.aperture.accessor.base.ModelAccessData.put(ModelAccessDa
> ta.java:219)
> 	at
> org.semanticdesktop.aperture.accessor.file.FileAccessor.get(FileAccessor.jav
> a:117)
> 	at
> org.semanticdesktop.aperture.accessor.file.FileAccessor.getDataObjectIfModif
> ied(FileAccessor.java:66)
> 	at
> org.semanticdesktop.aperture.crawler.filesystem.FileSystemCrawler.crawlSingl
> eFile(FileSystemCrawler.java:213)
> 	at
> org.semanticdesktop.aperture.crawler.filesystem.FileSystemCrawler.crawlFileT
> ree(FileSystemCrawler.java:136)
> 	at
> org.semanticdesktop.aperture.crawler.filesystem.FileSystemCrawler.crawlObjec
> ts(FileSystemCrawler.java:87)
> 	at
> org.semanticdesktop.aperture.crawler.base.CrawlerBase.crawl(CrawlerBase.java
> :152)
>
> If I use the FileAccessData instead it works perfectly...
>
> Configuration info :
> Sesame 2 beta2
> Aperture from CVS and rdf2go 4.4
> Do I make something wrong in the accessData setup ? 
>
> Regards,
>
> Florent
>
>
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