Hi Eliza,
Have you updated to Virtuoso 7.2 as the Jena/Sesame Providers available in this
release make use of server side APIs optimised for graph/triple deletion, thus
the removeAll() function is significantly faster. Thus you need to ensure you
upgrade both the Virtuoso Java clients (Jena/Sesame/JDBC) and Virtuoso Server
binary get these optimisations ...
Best Regards
Hugh Williams
Professional Services
OpenLink Software, Inc. // http://www.openlinksw.com/
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Universal Data Access, Integration, and Management Technology Providers
> On 4 Mar 2015, at 17:29, Eliza Chan <elc2...@med.cornell.edu> wrote:
>
> Hi Hugh,
>
> Sorry for not responding sooner.
> I didn't develop the application that ran the import and export so I had to
> do some research.
> Looks like the application uses com.hp.hpl.jena.graph.BulkUpdateHandler to
> import and export the data.
> Also, I have noticed one thing - the BulkUpdateHandler's removeAll() function
> is very slow (> 1 hour) to remove data (< 50,000 triples) from Virtuoso.
> Do you know if there is a better function to remove the graph data within a
> reasonably short time?
> Thank you so much for your help.
>
> Eliza
>
>
>
> From: Hugh Williams <hwilli...@openlinksw.com
> <mailto:hwilli...@openlinksw.com>>
> Date: Sunday, February 15, 2015 7:31 PM
> To: Eliza Chan <elc2...@med.cornell.edu <mailto:elc2...@med.cornell.edu>>
> Cc: james anderson <ja...@dydra.com <mailto:ja...@dydra.com>>,
> "virtuoso-users@lists.sourceforge.net
> <mailto:virtuoso-users@lists.sourceforge.net>"
> <virtuoso-users@lists.sourceforge.net
> <mailto:virtuoso-users@lists.sourceforge.net>>
> Subject: Re: [Virtuoso-users] Virtuoso changes nonNegativeInteger to Integer
>
> Hi Eliza,
>
> Can you please provide steps of how you are importing the data into Virtuoso
> and then exporting it, so it can be tried locally ?
>
> Also, note that the Virtuoso 7.2 stable/7 release went out last week [1],
> thus I would suggest updating from source forge or git and retesting …
>
> [1]
> http://virtuoso.openlinksw.com/dataspace/doc/dav/wiki/Main/#2015-02-11:%20Virtuoso%207.2.0%20Released,%20Open%20Source%20and%20Commercial%20Editions
> <http://virtuoso.openlinksw.com/dataspace/doc/dav/wiki/Main/#2015-02-11:
> Virtuoso 7.2.0 Released, Open Source and Commercial Editions>
>
> Best Regards
> Hugh Williams
> Professional Services
> OpenLink Software, Inc. // http://www.openlinksw.com/
> <http://www.openlinksw.com/>
> Weblog -- http://www.openlinksw.com/blogs/
> <http://www.openlinksw.com/blogs/>
> LinkedIn -- http://www.linkedin.com/company/openlink-software/
> <http://www.linkedin.com/company/openlink-software/>
> Twitter -- http://twitter.com/OpenLink <http://twitter.com/OpenLink>
> Google+ -- http://plus.google.com/100570109519069333827/
> <http://plus.google.com/100570109519069333827/>
> Facebook -- http://www.facebook.com/OpenLinkSoftware
> <http://www.facebook.com/OpenLinkSoftware>
> Universal Data Access, Integration, and Management Technology Providers
>
>> On 12 Feb 2015, at 18:06, Eliza Chan <elc2...@med.cornell.edu
>> <mailto:elc2...@med.cornell.edu>> wrote:
>>
>> Hi James,
>>
>> Thank you for your feedback.
>>
>> Please see the following reasons for keeping the nonNegativeInteger type:
>>
>> 1) The designation of nonNegativeInteger makes sense for the maxCardinality
>> property. We know that a negative value would be invalid, and we'd like to
>> clearly express that.
>>
>> 2) We obtain our ontologies from a variety of sources. They are designed and
>> maintained by their originators. As long as they are semantically valid, we
>> would like to use them without modification.
>>
>> 3) For the reason of data integrity, we'd like to restrict the type so that
>> we are confident that it will retain its assigned type when writing into and
>> reading out of the triple store.
>>
>> That's why it would be very nice if Virtuoso could accommodate the
>> nonNegativeInteger type without modifying it.
>>
>> Regards,
>> Eliza
>>
>> From: james anderson <ja...@dydra.com <mailto:ja...@dydra.com>>
>> Date: Thursday, February 12, 2015 6:42 AM
>> To: Eliza Chan <elc2...@med.cornell.edu <mailto:elc2...@med.cornell.edu>>
>> Subject: Re: [Virtuoso-users] Virtuoso changes nonNegativeInteger to Integer
>>
>> good morning, ms chan;
>>
>> i write to you as a bystander on the virtuoso list, who is most curious,
>> what you use case is, such the the specific concrete datatype,
>> xsd:nonNegativeInteger, is in itself significant, rather than just the
>> domain value itself?
>>
>> is the mechanism which interprets the owl definition so restrictive, that it
>> is not sufficient, that the actual type of the domain value satisfy the
>> constraint and, in addition, the domain specified in the literal must also
>> conform?
>>
>> are you at liberty to describe why the integer type is not specifically
>> sufficient?
>>
>> best regards, from berlin,
>>
>> On 2015-02-11, at 16:49, Eliza Chan <elc2...@med.cornell.edu
>> <mailto:elc2...@med.cornell.edu>> wrote:
>>
>>> Hi,
>>>
>>> We are facing an issue with the import of some RDF files to Virtuoso.
>>>
>>> The issue here is, Virtuoso changes all the nonNegativeInteger datatypes to
>>> integer.
>>>
>>> Please see the following example …
>>>
>>> Original content being imported into Virtuoso:
>>>
>>> <owl:Restriction>
>>> <owl:onProperty rdf:resource="http://www.w3.org/2006/vcard/ns#country
>>> <http://www.w3.org/2006/vcard/ns#country>"/>
>>> <owl:maxCardinality
>>> rdf:datatype="http://www.w3.org/2001/XMLSchema#nonNegativeInteger
>>> <http://www.w3.org/2001/XMLSchema#nonNegativeInteger>">1</owl:maxCardinality>
>>> </owl:Restriction>
>>>
>>> Export from Virtuoso:
>>>
>>> <rdf:Description rdf:nodeID="b17159">
>>> <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Restriction
>>> <http://www.w3.org/2002/07/owl#Restriction>" />
>>> <owl:onProperty rdf:resource="http://www.w3.org/2006/vcard/ns#country
>>> <http://www.w3.org/2006/vcard/ns#country>" />
>>> <owl:maxCardinality
>>> rdf:datatype="http://www.w3.org/2001/XMLSchema#integer
>>> <http://www.w3.org/2001/XMLSchema#integer>">1</owl:maxCardinality>
>>> </rdf:Description>
>>>
>>> Note that the datatype for maxCardinality has been modified by Virtuoso
>>> from nonNegativeInteger to integer.
>>>
>>> Is there a way to resolve this issue so that Virtuoso is able to keep the
>>> original datatype?
>>>
>>> FYI - We are using Virtuoso Open Source stable version 7.
>>>
>>> Thank you so much for your help.
>>>
>>> Eliza
>>>
>>> ------------------------------------------------------------------------------
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>>
>>
>>
>> ---
>> james anderson | ja...@dydra.com <mailto:ja...@dydra.com> | http://dydra.com
>> <http://dydra.com/>
>>
>>
>>
>>
>>
>> ------------------------------------------------------------------------------
>> Dive into the World of Parallel Programming. The Go Parallel Website,
>> sponsored by Intel and developed in partnership with Slashdot Media, is your
>> hub for all things parallel software development, from weekly thought
>> leadership blogs to news, videos, case studies, tutorials and more. Take a
>> look and join the conversation now.
>> http://goparallel.sourceforge.net/_______________________________________________
>>
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>
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conversation now. http://goparallel.sourceforge.net/
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