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https://issues.apache.org/jira/browse/JENA-1290?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15873952#comment-15873952
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Alexis Armin Huf commented on JENA-1290:
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Did it again on a clean clone repository after cleaning all jena jars on my
local repository. Same results. The reason why it looks a classpath issue is
this:
{noformat}
Running org.apache.jena.sparql.api.TS_API
Tests run: 42, Failures: 0, Errors: 42, Skipped: 0, Time elapsed: 0 sec <<<
FAILURE! - in org.apache.jena.sparql.api.TS_API
testARQConstructQuad_Prefix(org.apache.jena.sparql.api.TestAPI) Time elapsed:
0 sec <<< ERROR!
java.lang.NoClassDefFoundError: Could not initialize class
org.apache.jena.graph.NodeFactory
at org.apache.jena.sparql.api.TestAPI.<clinit>(TestAPI.java:46)
....
{noformat}
The just built jena-core-3.3.0-SNAPSHOT jar is in the local maven repo.
Attached the output of mvn -X clean install. If I'm not missing any special
step, any hints on where to investigate would be appreciated.
> Slow Model.createList()
> -----------------------
>
> Key: JENA-1290
> URL: https://issues.apache.org/jira/browse/JENA-1290
> Project: Apache Jena
> Issue Type: Improvement
> Components: Core
> Affects Versions: Jena 3.0.1, Jena 3.2.0
> Environment: OpenJDK 1.8.0.121-b13
> Reporter: Alexis Armin Huf
> Priority: Minor
> Attachments: JENA-1290.patch, jena-slow-rdflist.tar.gz,
> mvn-clean-install.log.gz
>
>
> Model.createList(Iterator) is slow for large list sizes. Starting at 128
> nodes, creating a list from an ArrayList iterator takes ~3.6ms and the time
> goes up to 182ms for 1024 nodes. Creating the RDF list by hand and then doing
> .as(RDFList.class) for the 1024-nodes tests takes only 1.2ms. I will attach a
> MWE.
> Going through the code, the cause seems to be that RDFListImpl.with() , which
> is called for every member added, will always walk the entire list to get the
> last node. It mentions a possible cache for that, but it is not implemented.
> I wrote a patch for this issue replacing ModelCom.createList()
> implementation. I could not find tests for createList, so I added three
> simple ones to TestModel.
> PS: I'm having a classpath issue with jena-arq tests on mvn clean install, so
> I could only run tests for jena-core. Are there more specific instructions
> somewhere for building and testing jena?
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