Tim,

 

This should work. The Classes View should look for classes only, except
there is an instance count. The Properties View should look for properties
only. The Instances View and SPARQL results will display only the first
1,000 or whatever the number you set in Preferences.

 

I don't see the attached screenshot, but I would disable the display of the
count of instances per class in the Class View. I would not remove building
caches for subClassOf and subPropertyOf.

 

We may need a call if you are still stuck.

 

Regards,

 

Irene

 

From: [email protected]
[mailto:[email protected]] On Behalf Of Tim Smith
Sent: Friday, April 11, 2014 1:00 PM
To: [email protected]
Subject: Re: [topbraid-users] How to NOT cache all triples from database
back end

 

Ok, that I understand.  In this case there are < 1000 classes and ~100
properties.  The class/property definitions are not stored in the triple
store.  They are stored in local files which are imported as needed.

So is TBC actually pulling out all the triples or just "definition" triples
to find all the classes and properties to display?  i.e  SELECT ?s ?p ?o vs
just looking for classes/properties...  

Thanks,

Tim

 

On Fri, Apr 11, 2014 at 12:42 PM, Scott Henninger
<[email protected]> wrote:

Tim, the issue is that Composer displays the classes and properties.  If you
have an ontology with a few classes and properties, Composer works well.
Getting the first n instances (1000 out-of-the-box) when choosing the
Instances view, etc.  But if you have an ontology with 20k class
definitions, then all need to be cached to display the tree.  Same for
properties.

-- Scott

On 4/11/2014, 11:32 AM, Tim Smith wrote:

Hi Mark,

So there is no way to tell Composer to not load the entire contents of an
Oracle RDF triple store into memory when first opening the Oracle connector
file?  No queries have been issued at this point.

That really can't be the case or TBC is completely useless for creating and
editing anything that can't be held in local memory.  I expect TBC to behave
differently when the triples are hosted in a triple store vs a file system.

Thoughts?

Thanks,

Tim

 

 

On Fri, Apr 11, 2014 at 12:23 PM, Mark Graham <[email protected]> wrote:

Hi Tim, 

 

Composer will need to cache all the data it needs to display the database.
But some performance issue from large files can be mitigated with the use of
SPARQLMotion or a SWP UI to control how the data is cached into memory -
(written such that no data is cached until the query is executed, etc.).

 

Thanks,

Mark




Thanks,
Mark


Mark Graham
TopQuadrant Support

*PRODUCT SUPPORT:*

[email protected]
http://www.topquadrant.com/products/support.html



 

On Fri, Apr 11, 2014 at 11:10 AM, Tim Smith <[email protected]> wrote:

Hi,

I'm using TBC 4.3.1 with an Oracle 11g triple store.  There are nearly 100M
triples in the triple store.

I am trying to get TBC to stop attempting to cache all the triples when I
open the Oracle connector file in the workspace.  I've read the help
sections related to database back ends and I've checked "Suppress default
superclass inferences for database projects" and I've removed all entries
from the "Prebuild caches for properties" option.  See attached screenshot.


However, when I open the connector file using TBC, the error log displays:
Starting caching all triples... and then gives me a count of how many
triples it has cached.  I end up canceling the load because I don't want all
the triples cached locally.

What am I missing?  The help pages seem to indicate that these settings
should disable the caching for large database.  

Thanks in advance for your help.  I'm stuck until I get this one figured
out.

Tim




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