Hi,
while I was helping Jérôme on jena-users mailing list investigating his
problem with LARQ SNAPSHOTs, I found another strange problem.

Here is what I do:

cd /tmp
svn co https://svn.apache.org/repos/asf/incubator/jena/Jena2/Fuseki/trunk/ 
fuseki
cd /tmp/fuseki
wget 
https://issues.apache.org/jira/secure/attachment/12498659/JENA-63_Fuseki_r1176980.patch
patch -p0 < JENA-63_Fuseki_r1176980.patch
mvn clean package

The dependencies are now... mvn depedency:tree:

[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Building Fuseki
[INFO]    task-segment: [dependency:tree]
[INFO] ------------------------------------------------------------------------
[INFO] [dependency:tree {execution: default-cli}]
[INFO] org.openjena:fuseki:jar:0.2.1-SNAPSHOT
[INFO] +- org.apache.jena:jena-arq:jar:2.8.9-incubating-SNAPSHOT:compile
[INFO] |  +- org.codehaus.woodstox:wstx-asl:jar:3.2.9:compile
[INFO] |  |  \- stax:stax-api:jar:1.0.1:compile
[INFO] |  +- org.apache.httpcomponents:httpcore:jar:4.1.2:compile
[INFO] |  +- com.hp.hpl.jena:iri:jar:0.8:compile
[INFO] |  +- com.ibm.icu:icu4j:jar:3.4.4:compile
[INFO] |  \- xerces:xercesImpl:jar:2.7.1:compile
[INFO] +- org.apache.jena:jena-larq:jar:0.2.2-incubating-SNAPSHOT:compile
[INFO] |  \- org.apache.lucene:lucene-core:jar:3.1.0:compile
[INFO] +- org.apache.jena:jena-arq:jar:tests:2.8.9-incubating-SNAPSHOT:test
[INFO] +- com.hp.hpl.jena:jena:jar:2.6.4:compile
[INFO] +- com.hp.hpl.jena:jena:jar:tests:2.6.4:test
[INFO] +- org.apache.jena:jena-tdb:jar:0.9.0-incubating-SNAPSHOT:compile
[INFO] +- junit:junit:jar:4.8.2:compile
[INFO] +- org.apache.httpcomponents:httpclient:jar:4.1.2:compile
[INFO] +- commons-fileupload:commons-fileupload:jar:1.2.2:compile
[INFO] +- commons-codec:commons-codec:jar:1.5:compile
[INFO] +- org.eclipse.jetty:jetty-server:jar:7.2.1.v20101111:compile
[INFO] |  +- javax.servlet:servlet-api:jar:2.5:compile
[INFO] |  +- org.eclipse.jetty:jetty-continuation:jar:7.2.1.v20101111:compile
[INFO] |  \- org.eclipse.jetty:jetty-http:jar:7.2.1.v20101111:compile
[INFO] |     \- org.eclipse.jetty:jetty-io:jar:7.2.1.v20101111:compile
[INFO] +- org.eclipse.jetty:jetty-servlet:jar:7.2.1.v20101111:compile
[INFO] |  \- org.eclipse.jetty:jetty-security:jar:7.2.1.v20101111:compile
[INFO] +- org.eclipse.jetty:jetty-jsp-2.1:jar:7.2.1.v20101111:compile
[INFO] +- org.mortbay.jetty:jsp-2.1-glassfish:jar:2.1.v20100127:compile
[INFO] |  +- org.eclipse.jdt.core.compiler:ecj:jar:3.5.1:compile
[INFO] |  +- org.mortbay.jetty:jsp-api-2.1-glassfish:jar:2.1.v20100127:compile
[INFO] |  \- ant:ant:jar:1.6.5:compile
[INFO] +- org.eclipse.jetty:jetty-webapp:jar:7.2.1.v20101111:compile
[INFO] |  \- org.eclipse.jetty:jetty-xml:jar:7.2.1.v20101111:compile
[INFO] |     \- org.eclipse.jetty:jetty-util:jar:7.2.1.v20101111:compile
[INFO] +- org.slf4j:slf4j-api:jar:1.6.1:compile
[INFO] +- org.slf4j:slf4j-log4j12:jar:1.6.1:compile
[INFO] +- org.slf4j:jcl-over-slf4j:jar:1.6.1:compile
[INFO] \- log4j:log4j:jar:1.2.16:compile
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESSFUL
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3 seconds
[INFO] Finished at: Tue Oct 11 21:48:05 BST 2011
[INFO] Final Memory: 24M/338M
[INFO] ------------------------------------------------------------------------


In particular notice: org.apache.jena:jena-tdb:jar:0.9.0-incubating-SNAPSHOT.

Now, I used to load data using tdbloader available in Fuseki.

cd /tmp/fuseki
java -cp target/fuseki-0.2.1-SNAPSHOT-sys.jar tdb.tdbloader --loc=/tmp/tdb 
books.ttl
-- Start triples data phase
** Load empty triples table
Load: books.ttl -- 2011/10/11 21:34:16 BST
-- Finish triples data phase
17 triples loaded in 0.03 seconds [Rate: 500.00 per second]
-- Start triples index phase
** Index SPO->POS: 17 slots indexed in 0.00 seconds [Rate: 17,000.00 per second]
** Index SPO->OSP: 17 slots indexed in 0.00 seconds [Rate: 17,000.00 per second]
-- Finish triples index phase
** 17 triples indexed in 0.00 seconds [Rate: 4,250.00 per second]
-- Finish triples load
** Completed: 17 triples loaded in 0.04 seconds [Rate: 395.35 per second]

Now, if I run tdbdump I get an exception:

java -cp target/fuseki-0.2.1-SNAPSHOT-sys.jar tdb.tdbdump --loc=/tmp/tdb

Exception in thread "main" java.lang.UnsupportedOperationException: subject 
cannot be null
        at com.hp.hpl.jena.graph.Triple.<init>(Triple.java:28)
        at com.hp.hpl.jena.tdb.lib.TupleLib.triple(TupleLib.java:123)
        at com.hp.hpl.jena.tdb.lib.TupleLib.triple(TupleLib.java:115)
        at com.hp.hpl.jena.tdb.lib.TupleLib.access$000(TupleLib.java:44)
        at com.hp.hpl.jena.tdb.lib.TupleLib$3.convert(TupleLib.java:76)
        at com.hp.hpl.jena.tdb.lib.TupleLib$3.convert(TupleLib.java:72)
        at org.openjena.atlas.iterator.Iter$4.next(Iter.java:279)
        at org.openjena.atlas.iterator.Iter$4.next(Iter.java:279)
        at org.openjena.atlas.iterator.Iter.next(Iter.java:744)
        at org.openjena.atlas.iterator.IteratorCons.next(IteratorCons.java:86)
        at org.openjena.atlas.iterator.Iter.sendToSink(Iter.java:496)
        at org.openjena.riot.out.NQuadsWriter.write(NQuadsWriter.java:41)
        at org.openjena.riot.RiotWriter.writeNQuads(RiotWriter.java:38)
        at tdb.tdbdump.exec(tdbdump.java:50)
        at arq.cmdline.CmdMain.mainMethod(CmdMain.java:97)
        at arq.cmdline.CmdMain.mainRun(CmdMain.java:59)
        at arq.cmdline.CmdMain.mainRun(CmdMain.java:46)
        at tdb.tdbdump.main(tdbdump.java:32)


Am I doing something wrong?

Paolo

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