I have an unusual request for this group, but I am trying to remember the
name of a particular application development platform that I believe was
based on the semantic web. I believe this is a commercial product, books
were published on it, but I simply cannot remember the name. They presented
at
I am considering porting Jena onto a new storage framework. I had looked at
doing this a few years ago, but never did it. Now may be a better time. It also
runs in a cloud environment that supports multi-processing, etc. But the first
step is mapping of the data to the storage. I briefly looked
of Virginia Library
> On Apr 26, 2016, at 11:20 AM, David Jordan wrote:
>
> I am considering porting Jena onto a new storage framework. I had looked at
> doing this a few years ago, but never did it. Now may be a better time. It
> also runs in a cloud environment that supports m
Thanks Andy!
-Original Message-
From: Andy Seaborne [mailto:a...@apache.org]
Sent: Tuesday, April 26, 2016 1:09 PM
To: users@jena.apache.org
Subject: Re: porting Jena onto new storage facility
On 26/04/16 18:04, David Jordan wrote:
> Thanks. Most of these are in pack
18:04, David Jordan wrote:
> Thanks. Most of these are in package org.apache.jena.graph, but not the
> DatasetGraph interface.
>
> -Original Message-
> From: A. Soroka [mailto:aj...@virginia.edu]
> Sent: Tuesday, April 26, 2016 11:56 AM
> To: users@jena.apache.org
&
No reason to overwrite anything, each event will have attributes, including
a date.
On Tue, Oct 18, 2016 at 2:27 PM, Andy Seaborne wrote:
> neha,
>
> Your question is too open ended. Sounds like the whole exercise you have
> been asked to do.
>
> What have you tried?
>
> Try something and show
I agree that have some discussion about this is very useful. Many of us
have tried to evangelize semantic web technologies in our organizations and
have struggled and failed because we cannot provide sufficient
justification for using the technology. Hearing the specific value provided
that can con
Recursion.
Try increasing the stack size of your JVM when you run it.
On Thu, Oct 5, 2017 at 9:18 PM, Steve Vestal wrote:
> What might cause
>
> myOntology.writeAll(outStream, "RDF/XML");
>
> (where myOntology is an OntModel) to get a stack overflow
>
> java.lang.StackOverflowError
The first question to answer is how much memory have you allocated in the Java
heap. You can control this. The default JVM heap size will very likely be too
small.
-Original Message-
From: Timothy Lebo [mailto:le...@rpi.edu]
Sent: Friday, March 28, 2014 10:41 AM
To: users@jena.apache.or
better choice, but I’d like to hear what
others have to say about it.
David Jordan
Senior Software Developer
SAS Institute Inc.
Health & Life Sciences, Research & Development
Bldg R ▪ Office 4467
600 Research Drive ▪ Cary, NC 27513
Tel: 919 531 1233 ▪ david.jor...@sas.com<mailto:david.jor
ically get from reading a file from disk has.
Rob
On 01/04/2014 17:50, "David Jordan" wrote:
>A question has come up in my organization concerning the storage/access
>of RDF/OWL using flat files versus TDB. There is interest in supporting
>versioning of the ontologies whi
Of course that reasoning needs to occur to compute the transitivity. That would
result in triples containing
A Predicate B
B Predicate C
C Predicate D
But I think the question is how that set of triples could get returned as
A
B
C
I'd be very interested in understanding how to do this also.
---
{ ?x
owl:sameAs+ ?y .}
otherwise, i believe you can use OWL syntax, say predicate is transitive, then
use whatever reasoner to do inference first. then query
--
Cong Wang
Sent with Sparrow (http://www.sparrowmailapp.com/?sig)
On Friday, August 3, 2012 at 2:32 PM, David Jordan wrote
I may be wrong, but I don't believe the ConcurrentModificationException has
anything to do with database-level concurrency. Does TDB allow multiple
separate JVMs to concurrently access/modify a specific datastore? It has been
awhile since I used TDB, I did not think it supported this.
-Ori
I had the same reaction. Is this described in the documentation? I have been
away from Jena for about a year, but luckily it looks like I have finally
gotten commitment to do some work with it again. I was not aware of this
characteristic of sub models when I started playing around with them a y
Hlel emna,
After reading many of your questions regarding the use of Jena, it seems like
you would really benefit from understanding how to do data modeling within
RDF/OWL. While your questions often are relative to Jena-specific syntax, it
seems the root issue is gaining a better understanding
. Is a model considered a name graph? Do
you just use the name of the model in the SPARQL graph statement?
David Jordan
If that is true, would it make sense to fold Pellet into the Apache Jena
project, or would that detract from supporting multiple reasoners?
-Original Message-
From: Olivier Rossel [mailto:olivier.ros...@gmail.com]
Sent: Thursday, February 07, 2013 5:54 AM
To: users@jena.apache.org; Milor
I am trying to use the arq command with sdb/mysql. I have had a few problems
getting the class path set up properly.
I have downloaded apache-jena-2.7.4 and jena-sdb-1.3.5.
The arq command uses environment variable JENA_HOME to build up a class path
with all the jars under its lib directory. Th
QueryIteratorCloseable(QueryIteratorWrapper).hasNextBinding() line: 40
QueryIteratorCloseable(QueryIteratorBase).hasNext() line: 112
ResultSetStream.hasNext() line: 72
RunQueries.main(String[]) line: 43
On Feb 9, 2013, at 12:42 PM, David
2.10.0, I guess I
need to download it too.
My thinking was the development snapshot versions may be less robust (more
problems) than official release versions.
On Feb 9, 2013, at 4:11 PM, Andy Seaborne wrote:
> On 09/02/13 17:42, David Jordan wrote:
>> I have downloaded apache-jena-2.7.4
in my PATH?
On Feb 9, 2013, at 4:32 PM, David Jordan wrote:
>
> So the latest versions of Jena and SDB posted are not necessarily compatible?
> It would be nice then if you included with the Jena distribution the most
> up-to-date version of the SDB jar that works with it.
>
I need to use sdbquery instead of arq.
Thanks for your help, I now have jars that work.
On Feb 9, 2013, at 5:33 PM, Andy Seaborne wrote:
> On 09/02/13 21:54, David Jordan wrote:
>>
>> Thanks, that took care of it, and I see this snapshot of SDB includes the
>> Jena 2.1
I have some Java code in which I have added triples to the database as part of
a named model. Using SQL, I have confirmed that column quads.g contains a
reference to the name that I have provided. I can also query that model in Java
and retrieve the triples. For example, I have the following qu
It works when I specify the UnionGraph in the query, but when using sdbquery it
is not clear how to set SDB.unionDefaultGraph to true.
I tried the following approaches, but they did not work:
sdbquery --query=query1.rq --set SDB.unionDefaultGraph=true
(got no result)
sdbquery --query=query1.rq
On Feb 11, 2013, at 5:07 AM, Andy Seaborne wrote:
> On 11/02/13 00:40, David Jordan wrote:
>>
>> It works when I specify the UnionGraph in the query, but when using sdbquery
>> it is not clear how to set SDB.unionDefaultGraph to true.
>>
>> I tried the follo
I am trying to figure out how to do the following. I am using SDB.
I'd like to be able to insert some RDF data into a named model in SDB, call it
A.
I would also like to store into SDB the ontology model B that results from
inferencing on this model A.
This is to avoid doing the inferencing dyna
model B
after it has been stored and to have it behave like any other, memory resident
OntModel. Is this possible?
I am trying to do this because the performance of reasoning on the fly is too
slow.
On Feb 16, 2013, at 3:18 PM, David Jordan wrote:
>
> I am trying to figure out how to
to work.
Would another approach be to get the OntClasses associated with individual a
and then calling OntClass.isDisjointWith?
David Jordan
Senior Software Developer
SAS Institute Inc.
Health & Life Sciences, Research & Development
Bldg R ▪ Office 4467
600 Research Drive ▪ Cary, NC 2
ssage-
From: Joshua TAYLOR [mailto:joshuaaa...@gmail.com]
Sent: Friday, February 22, 2013 10:26 AM
To: users@jena.apache.org
Subject: Re: testing whether an instance could be associated with a class
On Fri, Feb 22, 2013 at 9:38 AM, David Jordan wrote:
> I have a question about how to express some
[mailto:joshuaaa...@gmail.com]
> Sent: Friday, February 22, 2013 10:26 AM
> To: users@jena.apache.org
> Subject: Re: testing whether an instance could be associated with a
> class
>
> On Fri, Feb 22, 2013 at 9:38 AM, David Jordan wrote:
>> I have a question about how to expr
model is consistent.
Reasoners like Pellet may have native APIs which streamline this sort of
checking.
Dave
On 22/02/13 17:11, David Jordan wrote:
> My original question WAS about an individual a of class A, let me call it
> a123, so not to confuse it with the word "a". I may hav
Thanks.
-Original Message-
From: Joshua TAYLOR [mailto:joshuaaa...@gmail.com]
Sent: Friday, February 22, 2013 12:42 PM
To: users@jena.apache.org
Subject: Re: testing whether an instance could be associated with a class
On Fri, Feb 22, 2013 at 12:11 PM, David Jordan wrote:
> My origi
ubject: Re: testing whether an instance could be associated with a
> class
>
>> -Original Message-
>> From: Joshua TAYLOR [mailto:joshuaaa...@gmail.com]
>> Sent: Friday, February 22, 2013 10:26 AM
>> To: users@jena.apache.org
>> Subject: Re: testing whether an in
ook for a contradiction.
>
> Whereas if you want to ask "can we deduce that this must be B as well" then
> you ask if it has (inferred) type B.
>
> Dave
>
> On 22/02/13 18:08, David Jordan wrote:
>>
>> Sorry, I'd like to be sure I understand this
stractJdbc2Statement.java:2893)
[java] at
com.hp.hpl.jena.sdb.layout2.TupleLoaderBase.flush(TupleLoaderBase.java:214)
[java] ... 5 more
[java] Java Result: -1
David Jordan
Senior Software Developer
SAS Institute Inc.
Health & Life Sciences, Research & Development
B
hat it is not triggering batch updates?
David Jordan
Senior Software Developer
SAS Institute Inc.
Health & Life Sciences, Research & Development
Bldg R ▪ Office 4467
600 Research Drive ▪ Cary, NC 27513
Tel: 919 531 1233 ▪ david.jor...@sas.com<mailto:david.jor...@sas.com>
www.sas.com<http://www.sas.com/>
SAS® … THE POWER TO KNOW®
: Tuesday, March 05, 2013 5:57 AM
To: users@jena.apache.org
Subject: Re: update on my Postgres issue
On 04/03/13 21:00, David Jordan wrote:
> With the recent error I reported, I was trying to load dbPedia ontology in
> RDF/XML format.
> This is with Postgres 9.2 and SDB 1.3.6 Snapshot.
>
If you have your ontology in its own separate Model, doesn't model.removeAll()
do it?
On Mar 5, 2013, at 4:49 PM, Dave Reynolds wrote:
> On 05/03/13 20:20, Mark Fischer wrote:
>> Is there an easy way to cleanly remove resources from an Ontology?
>>
>> Currently, I just remove all statements th
running of queries from within Ant and including the capability of passing
parameters?
David Jordan
Senior Software Developer
SAS Institute Inc.
Health & Life Sciences, Research & Development
Bldg R ▪ Office 4467
600 Research Drive ▪ Cary, NC 27513
Tel: 919 531 1233 ▪ david.jor...
sdbquery for the query in the file. Is this possible?
Are there any Ant tasks that have been developed that may facilitate the
running of queries from within Ant and including the capability of passing
parameters?
David Jordan
Senior Software Developer
SAS Institute Inc.
Health & Life Scie
:25, David Jordan wrote:
> It looks like I sent this request to the wrong email address
> yesterday. It is somewhat urgent that I get an answer to this
> question.
The incuabtor list is automatically directed here. The message arrives
18:49 UTC.
> When using the sdbquery command lin
r = rept.getReports(); riter
.hasNext();) {
ValidityReport.Report rep = riter.next();
System.out.println("ValRep: " + rep.getDescription());
}
// Now the challenge is to get the myCar individual to update with the
// statem
[mailto:chris.dol...@epimorphics.com]
Sent: Thursday, March 14, 2013 12:31 PM
To: users@jena.apache.org
Subject: Re: inferencing question
On Thursday, March 14, 2013 01:59:03 PM David Jordan wrote:
(I shall say "you" to refer to yourself or your colleague indiscriminately)
> There is an
Aren’t there values defined in the Jena interface somewhere for common
predicate like rdf:type, etc. that can be used when creating statements? I am
having trouble finding it.
David Jordan
Senior Software Developer
SAS Institute Inc.
Health & Life Sciences, Research & Development
Nevermind, I just found it under vocabulary package. I did not get much sleep
the past few days, thanks to taking prednisone…
From: David Jordan
Sent: Saturday, March 16, 2013 4:53 PM
To: users@jena.apache.org
Subject: quick question, cannot find in interface
Aren’t there values defined in the
What are the plans for OWL 2 support?
How difficult is it to have a configurable option that turns off the open world
assumption. No flames, please. There are products that do this and claim
superior performance.
On Mar 24, 2013, at 3:00 PM, Dave Reynolds wrote:
> On 24/03/13 17:27, Joshua T
I have not yet investigated Fuseki, but we will need something similar. So I am
interested in this. It would be good to have a very small white paper outlining
the architecture of Fuseki and what you are proposing, listing pros/cons of
each approach. With that in hand, there may be more people,
Other thoughts are that it could operate as a shared server cache (in memory)
that operates at the graph or model layer, providing separate client processes
with the data at the graph/model layer. The server process would make the lower
level calls to the underlying storage layer. Is this what y
What indexes exist during the load?
On Mar 27, 2013, at 4:40 PM, Joshua Greben wrote:
> Hello all,
>
> I just wanted to give an update on how my loading of 670M triples was going,
> or in this case not going.
>
> I ran the riot --time --sink script on my 6.3 GB nt.gz file and this was the
>
I would like to confirm my understanding about reasoning in Jena, as well as
ask whether the Pellet reasoner does things different.
When I create an OntModel, there is essentially no overhead, this is very fast.
With the very first use of the OntModel, it takes considerable time to produce
a r
, so this will help in that discussion.
-Original Message-
From: Dave Reynolds [mailto:dave.e.reyno...@gmail.com]
Sent: Thursday, March 28, 2013 4:42 PM
To: users@jena.apache.org
Subject: Re: reasoning overhead
Hi David,
On 28/03/13 19:47, David Jordan wrote:
>
> I would like to conf
}
}
}
}
The problem is that isValid is returning true, I expected false. What am I
doing wrong?
Am I using the wrong OntModelSpec?
David Jordan
Senior Software Developer
SAS Institute Inc.
Health & Life Sciences, Research & Development
Bldg R ▪ Office 4467
600 Rese
of a hasSex statement is inferred to be a Sex.
If you can elaborate on what invalidity/inconsistency you expected to observe,
someone can probably tell you what changes you'll need to make to the model to
get it.
//JT
On Fri, Mar 29, 2013 at 10:08 AM, David Jordan wrote:
>
>
= ModelFactory.createOntologyModel(spec, model);
OntClass bikeClass = omodel.getOntClass(uriBase + "Motorcycle");
Individual myBike = bikeClass.createIndividual(uriBase + "data/myBike");
This is with latest SDB and Postgres.
Is there anything in the ontology causing the slowdow
helps,
Rob
On 4/1/13 8:34 AM, "David Jordan" wrote:
>
>I am getting a performance result of around 1 minute clock time to
>execute OntClass.createIndividual. Is this expected? Below is the
>relevant part of the ontology and the Java code. Every line of code
of an equivalent class?
-Original Message-
From: Joshua TAYLOR [mailto:joshuaaa...@gmail.com]
Sent: Monday, April 01, 2013 12:45 PM
To: users@jena.apache.org
Subject: Re: performance of createIndividual with OntModel
On Mon, Apr 1, 2013 at 11:34 AM, David Jordan wrote:
>
> I a
o:joshuaaa...@gmail.com]
Sent: Monday, April 01, 2013 12:45 PM
To: users@jena.apache.org
Subject: Re: performance of createIndividual with OntModel
On Mon, Apr 1, 2013 at 11:34 AM, David Jordan wrote:
>
> I am getting a performance result of around 1 minute clock time to execute
> OntClass.c
/jena/graph/NodeFactory
Which jar should have this? It looks like I have all the jars that are included
with Jena 2.10.
David Jordan
Senior Software Developer
SAS Institute Inc.
Health & Life Sciences, Research & Development
Bldg R ▪ Office 4467
600 Research Drive ▪ Cary, NC 27513
Tel: 919 53
OK, thanks.
-Original Message-
From: Andy Seaborne [mailto:a...@apache.org]
Sent: Thursday, April 04, 2013 2:10 PM
To: users@jena.apache.org
Subject: Re: jar question
On 04/04/13 18:47, David Jordan wrote:
> I am trying to set up a build environment so that I can run either a
>
Did you mean SDB 1.3.5 or 1.3.6 SNAPSHOT ?
-Original Message-
From: Andy Seaborne [mailto:a...@apache.org]
You can use latest SDB 1.3.5-SNAPSHOT with Jens 2.10.1-SNAPSHOT (TDB
0.10.1-SNAPSHOT)
Andy
Dave,
I have been getting "less than stellar" performance in my benchmarking. I would
just like to be sure that the way I am using Jena IS performing inference over
in-memory models. I have stored Models in the database. When I access them and
create an OntModel, I do it in the following manner:
that would be backed up by a
storage facility that is not relational, so I am thinking the manner in which
TDB operates may be a better fit than SDB. Any helpful suggestions are greatly
appreciated.
David Jordan
Senior Software Developer
SAS Institute Inc.
Health & Life Sciences, Rese
WL in Jena
On 05/04/13 15:09, David Jordan wrote:
> Dave,
> I have been getting "less than stellar" performance in my benchmarking. I
> would just like to be sure that the way I am using Jena IS performing
> inference over in-memory models. I have stored Models in the dat
-sdb-1.3.6-SNAPSHOT.jar
jena-tdb-0.10.1-SNAPSHOT.jar
Does anything look wrong with this combination of jars?
-Original Message-
From: Andy Seaborne [mailto:a...@apache.org]
Sent: Thursday, April 04, 2013 3:25 PM
To: users@jena.apache.org
Subject: Re: jar question
On 04/04/13 19:21, David Jo
OK, thanks.
On Apr 14, 2013, at 1:03 PM, Andy Seaborne wrote:
> On 14/04/13 16:35, David Jordan wrote:
>>
>> I was trying to set up a build/run environment that would work for both SDB
>> and TDB. The past few weeks I have been focused on getting everything
>>
I have the same question. Surely the underlying SDB code begins/commits a
transaction when it does updates to the database. Does it do so on an
individual update operation? In which case you would lose the atomicity of
multiple updates done in a single transaction. If it does do little
transac
So every call to a method of Model or OntModel is done in a separate
transaction? This could easily explain the poor performance I am getting, and
those of others who have complained about SDB performance in this group.
Your code example is very sparse. Are there calls to make to get to an
ass
You are not listening to what we are telling you.
An address is NOT an employee. If you don't understand that, you are not going
to get very far…
You want to say that the address can also be a property of ont2's employee
class.
There is a big difference between being a property and being a subcl
OWL_MEM_MICRO_RULE_INF. I am
using the latest TDB release. Any idea why they are not being returned?
David Jordan
Senior Software Developer
SAS Institute Inc.
Health & Life Sciences, Research & Development
Bldg R ▪ Office 4467
600 Research Drive ▪ Cary, NC 27513
Tel: 919 531 1233 ▪ david.jor...
[mailto:joshuaaa...@gmail.com]
Sent: Tuesday, April 23, 2013 3:11 PM
To: users@jena.apache.org
Subject: Re: OntClass.listDeclaredProperties
On Tue, Apr 23, 2013 at 2:45 PM, David Jordan wrote:
> When I call listDeclaredProperties with a direct parameter value of false, I
> get a l
...@epimorphics.com]
Sent: Tuesday, April 23, 2013 6:49 PM
To: users@jena.apache.org
Subject: Re: OntClass.listDeclaredProperties
On 23/04/2013 20:10, Joshua TAYLOR wrote:
> On Tue, Apr 23, 2013 at 2:45 PM, David Jordan wrote:
>> When I call listDeclaredProperties with a direct parameter value of
DB_ASSEMBLER_FILE);
return dataset.getNamedModel(name);
} else {
if( store == null )
store = StoreFactory.create(SDB_ASSEMBLER_FILE);
return SDBFactory.connectNamedModel(store, name);
}
}
}
() is called, it is just going to validate model A, or will
it also validate the submodel, which would include the potentially large
associated ontology?
David Jordan
Senior Software Developer
SAS Institute Inc.
Health & Life Sciences, Research & Development
Bldg R ▪ Office 4467
600 Research
I am assuming that validate() will return null if getReasoner returns null.
I am pretty sure I am passing in a valid OntModelSpec.
What could cause the reasoner to be null?
David Jordan
Senior Software Developer
SAS Institute Inc.
Health & Life Sciences, Research & Development
Bldg R
ut m0 but m0 does not know about m1.
Is that correct?
-Original Message-
From: Ian Dickinson [mailto:i...@epimorphics.com]
Sent: Thursday, April 25, 2013 2:24 PM
To: users@jena.apache.org
Subject: Re: OntModel.validate( ) question
On 25/04/13 18:27, Joshua TAYLOR wrote:
> On Thu, A
ase
[junit] at java.lang.Class.forName0(Native Method)
David Jordan
Senior Software Developer
SAS Institute Inc.
Health & Life Sciences, Research & Development
Bldg R ▪ Office 4467
600 Research Drive ▪ Cary, NC 27513
Tel: 919 531 1233 ▪ david.jor...@sas.com<mailto:david.
I can answer this one, as I hit it yesterday.
I learned yesterday that the method validate() can return null, so that
explains your NullPointerException when you call isValid().
ValidityReport validity = modelWine.validate();
if (validity.isValid()) {
-Original Message-
From: Léonard
this issue are greatly
appreciated.
On Apr 26, 2013, at 3:22 PM, David Jordan wrote:
>
> I seem to randomly get the following file exception. Once I get this, I
> continue to get it until I remove all the data for the model in question. I
> reported this before, but I don’t belie
t too slow.
On Apr 27, 2013, at 11:46 AM, Andy Seaborne wrote:
> On 27/04/13 16:24, David Jordan wrote:
>>
>> Tomorrow I will try to get into work, download the TDB source, set a
>> breakpoint on this FileException to try and diagnose this myself. This
>> happens when I
ntln("validate() returns
null");
assertNotNull("validity report is null", validity);
boolean isValid = validity.isValid();
assertFalse(isValid);
dataset.abort();
} finally {
dataset.end();
}
}
David Jordan
S
yet. I'll need to see what functionality they lack relative to Models that
I am using.
On Apr 29, 2013, at 4:20 PM, Andy Seaborne wrote:
> On 29/04/13 20:06, David Jordan wrote:
>>
>> This email has several questions about an issue I am having.
>>
>> The
...@apache.org]
Sent: Tuesday, April 30, 2013 6:22 AM
To: users@jena.apache.org
Subject: Re: random, periodic TDB file exception
On 27/04/13 18:05, David Jordan wrote:
>
> Thanks once again, Andy.
>
> Perhaps the most relevant line from the transaction web page is the
> following sentence
have
updated transactions and require transactions. Is there an answer to this?
David Jordan
Senior Software Developer
SAS Institute Inc.
Health & Life Sciences, Research & Development
Bldg R ▪ Office 4467
600 Research Drive ▪ Cary, NC 27513
Tel: 919 531 1233 ▪ david.jor...@sas.com<mailto
transaction begins, will it then replace state the dataset is
maintaining, with the newly committed updates?
My goal here is how to properly maintain cached state, avoid the overhead of
re-reading the database, redoing inferencing inside each transaction.
David Jordan
Senior Software Developer
SAS
Andy,
I had previously been storing the inferenced form of an ontology WITHOUT
transactions. But when I added the use of transactions, I have run into both
out-of-memory issues and significant performance problems.
Is the code below the best way to create a separate inferenced model with use
o
t
base it off one that was stored as OWL_MEM_MICRO_RULE_INF, will that work and
will the inferencing take a lot less them than if it was stored with no
inferencing?
-Original Message-----
From: David Jordan
Sent: Thursday, May 02, 2013 10:00 AM
To: 'users@jena.apache.org'
Subject:
lication requirement driving the need for full RULE is coming
from a colleague in another organization. I'll see if we can investigate this
further.
On May 2, 2013, at 5:40 PM, Dave Reynolds wrote:
> On 02/05/13 15:24, David Jordan wrote:
>>
>> I think I just realized why I am having
();
}
}
-Original Message-
From: Joshua TAYLOR [mailto:joshuaaa...@gmail.com]
Sent: Tuesday, April 23, 2013 3:11 PM
To: users@jena.apache.org
Subject: Re: OntClass.listDeclaredProperties
On Tue, Apr 23, 2013 at 2:45 PM, David Jordan
mailto:david.jor...@sas.com>> wrote:
> Wh
80b8715e:-7ff4"
>
> Is there a way to load the OntProperty out of the name? I'm not quite sure,
> but I expected to get anything like "&xsd;string" or the real property-name
> like "hasName". Is this wrong?
>
>
> However, thank you very much for
bject: Re: Query declared properties returns too much
On 07/05/13 21:05, David Jordan wrote:
>
> I ran into this same problem two weeks ago. Joshua Taylor provided me
> with an answer, which I have included below. I ended up writing code
> similar to the following, where I passed
y.java:370)
[java] at
com.sas.ta.om.ListClassesAndNumInstances.main(ListClassesAndNumInstances.java:26)
David Jordan
Senior Software Developer
SAS Institute Inc.
Health & Life Sciences, Research & Development
Bldg R ▪ Office 4467
600 Research Drive ▪ Cary, NC 27513
Tel: 919 53
} finally {
dataset.end();
}
}
David Jordan
Senior Software Developer
SAS Institute Inc.
Health & Life Sciences, Research & Development
Bldg R ▪ Office 4467
600 Research Drive ▪ Cary, NC 27513
Tel: 919 531 1233 ▪ david.jor...@sas.com<mailto:david.jor...
: getting list of classes and count of instances
On Wed, May 8, 2013 at 4:24 PM, David Jordan wrote:
>
> I was asked to produce some output with a list of all classes and how many
> instances there are for each class.
> Is there any simpler way of doing it in Java than t
dataset.end();
}
}
}
-Original Message-
From: Andy Seaborne [mailto:a...@apache.org]
Sent: Thursday, May 09, 2013 5:14 AM
To: users@jena.apache.org
Subject: Re: TDBException: Allocation attempt on NodeTableReadonly
On 08/05/13 21:02, David Jordan wrote:
>
Andy
On 09/05/13 15:16, David Jordan wrote:
>
> Andy,
> I have included the complete program below. My code seems to be read only. It
> works with a model stored in non-inferenced form. But I have another model
> that I have pre-inferenced and stored, pre-inferenced using
Original Message-
From: Andy Seaborne [mailto:a...@apache.org]
Sent: Thursday, May 09, 2013 12:25 PM
To: users@jena.apache.org
Subject: Re: TDBException: Allocation attempt on NodeTableReadonly
On 09/05/13 17:00, David Jordan wrote:
> The class Database is my little utility class that hide whet
I assume the journal file will shrink in size once the updates have actually
been applied to the database files?
If no transactions are in progress, is there a way to initiate this transfer of
data from the journal to the database?
It may also be of interest to the application to hold off this tr
dont undestand.
I though that ds.commit() really updated the database files...
2013/5/13 David Jordan
> I assume the journal file will shrink in size once the updates have
> actually been applied to the database files?
> If no transactions are in progress, is there a way to init
TDB manages data on a block basis, I forget the specific size of the block, but
as I recall, the block size seemed relatively large to me. Many systems allow
you to configure the block size, but it does not seem TDB supports this. The
other aspect to triple stores is that despite the fact that t
1 - 100 of 126 matches
Mail list logo
