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From Benson Margulies <bimargul...@gmail.com>
Subject Re: current tdb shapshot has new problem
Date Thu, 03 Feb 2011 13:38:31 GMT
There are no updates happening in my code, in spite of my
misapplication of the suffix convention.

I'm working on a test case for you.

On Thu, Feb 3, 2011 at 4:33 AM, Andy Seaborne
<andy.seaborne@epimorphics.com> wrote:
> Works for me (on the test data from before).
>
> tdbloader --loc DB ~/Desktop/1k_news.nq.gz
> tdbquery --loc=DB --file=Q.rq
> => result model.
>
> Iterators count as read operations - you can't update a model and continue
> to iterate over results (which is what CONSTRUCT is doing).
>
> sync'ing a dataset is a write operation.
>
>        Andy
>
> PS The file extension for SPARQL queries is ".rq".  The extension for SPARQL
> Update is ".ru" (where "is" is defined to be "when the W3C registers the
> MIME type").
>
>
> On 03/02/11 02:02, Benson Margulies wrote:
>>
>> Jira shortly I hope.
>>
>> Caused by: java.util.ConcurrentModificationException: Iterator:
>> started at 266532, now 266533
>>        at
>> com.hp.hpl.jena.tdb.sys.ConcurrencyPolicyMRSW.policyError(ConcurrencyPolicyMRSW.java:127)
>>        at
>> com.hp.hpl.jena.tdb.sys.ConcurrencyPolicyMRSW.access$000(ConcurrencyPolicyMRSW.java:18)
>>        at
>> com.hp.hpl.jena.tdb.sys.ConcurrencyPolicyMRSW$IteratorCheckNotConcurrent.checkCourrentModification(ConcurrencyPolicyMRSW.java:90)
>>        at
>> com.hp.hpl.jena.tdb.sys.ConcurrencyPolicyMRSW$IteratorCheckNotConcurrent.hasNext(ConcurrencyPolicyMRSW.java:97)
>>        at org.openjena.atlas.iterator.Iter$4.hasNext(Iter.java:262)
>>        at org.openjena.atlas.iterator.Iter$3.hasNext(Iter.java:152)
>>        at org.openjena.atlas.iterator.Iter.hasNext(Iter.java:596)
>>        at
>> org.openjena.atlas.iterator.RepeatApplyIterator.hasNext(RepeatApplyIterator.java:46)
>>        at org.openjena.atlas.iterator.Iter$4.hasNext(Iter.java:262)
>>        at
>> com.hp.hpl.jena.sparql.engine.iterator.QueryIterPlainWrapper.hasNextBinding(QueryIterPlainWrapper.java:42)
>>        at
>> com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:66)
>>        at
>> com.hp.hpl.jena.sparql.engine.iterator.QueryIterProcessBinding.hasNextBinding(QueryIterProcessBinding.java:48)
>>        at
>> com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:66)
>>        at
>> com.hp.hpl.jena.sparql.engine.iterator.QueryIterConcat.hasNextBinding(QueryIterConcat.java:70)
>>        at
>> com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:66)
>>        at
>> com.hp.hpl.jena.sparql.engine.iterator.QueryIterRepeatApply.hasNextBinding(QueryIterRepeatApply.java:57)
>>        at
>> com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:66)
>>        at
>> com.hp.hpl.jena.sparql.engine.iterator.QueryIterProcessBinding.hasNextBinding(QueryIterProcessBinding.java:48)
>>        at
>> com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:66)
>>        at
>> com.hp.hpl.jena.sparql.engine.iterator.QueryIterDefaulting.hasNextBinding(QueryIterDefaulting.java:43)
>>        at
>> com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:66)
>>        at
>> com.hp.hpl.jena.sparql.engine.iterator.QueryIterRepeatApply.hasNextBinding(QueryIterRepeatApply.java:57)
>>        at
>> com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:66)
>>        at
>> com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorWrapper.hasNextBinding(QueryIteratorWrapper.java:28)
>>        at
>> com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:66)
>>        at
>> com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorWrapper.hasNextBinding(QueryIteratorWrapper.java:28)
>>        at
>> com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:66)
>>        at
>> com.hp.hpl.jena.sparql.engine.QueryExecutionBase.execConstruct(QueryExecutionBase.java:117)
>>        at
>> com.basistech.jug.rdfdb.jena.JenaStore.executeConstructQuery(JenaStore.java:127)
>>        at
>> com.basistech.jug.rdfdb.jena.QueryManager.runConstructQuery(QueryManager.java:59)
>>        at
>> com.basistech.jug.rdfdb.service.query.QueryService.constructQuery(QueryService.java:166)
>>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>        at
>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>>        at
>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>>        at java.lang.reflect.Method.invoke(Method.java:597)
>>        at
>> org.apache.cxf.service.invoker.AbstractInvoker.performInvocation(AbstractInvoker.java:173)
>>        at
>> org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:89)
>>        ... 29 more
>

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