Hi, and thanks for your feedback.
On 4/29/2015 12:44, arguscesus wrote:
Hi, I am an experienced Semantic web developer, but new to TBC and
SPARQLMotion. I tried the simplest import news feed and the tutorial,
and had issues to start with your documentations. Please help and
update your tutorial.
tutorial: http://www.topquadrant.com/sparqlmotion/tutorial/SPARQLMotionTutorial.pdf
For the simple import News feed. sml:url
"http://composing-the-semantic-web.blogspot.com/atom.xml";. I just
created this single module. When I clicked RUN, got the following
error messages:
java.lang.reflect.InvocationTargetException
at
org.topbraidcomposer.sparqlmotion.actions.AbstractExecuteSPARQLMotionAction$1.run(AbstractExecuteSPARQLMotionAction.java:153)
at org.topbraidcomposer.core.util.ThreadUtil$1$1.run(ThreadUtil.java:64)
at java.lang.Thread.run(Unknown Source)
Caused by: org.topbraid.spin.sparqlmotion.modules.SMException:
java.io.IOException: java.lang.NullPointerException
at
org.topbraid.sparqlmotion.lib.internal.ImportNewsFeedModule.createGraph(ImportNewsFeedModule.java:43)
at
org.topbraid.spin.sparqlmotion.modules.AbstractSMModule.getRDFOutput(AbstractSMModule.java:907)
at
org.topbraid.spin.sparqlmotion.engine.impl.ExecutionEngineImpl.executeModule(ExecutionEngineImpl.java:176)
at
org.topbraid.spin.sparqlmotion.engine.impl.ExecutionEngineImpl.execute(ExecutionEngineImpl.java:118)
at
org.topbraidcomposer.sparqlmotion.views.console.SPARQLMotionConsole.execute(SPARQLMotionConsole.java:79)
at
org.topbraidcomposer.sparqlmotion.actions.AbstractExecuteSPARQLMotionAction$1.run(AbstractExecuteSPARQLMotionAction.java:142)
... 2 more
Caused by: java.io.IOException: java.lang.NullPointerException
at
org.topbraid.feeds.graphstore.FeedsGraphStore.load(FeedsGraphStore.java:94)
at
org.topbraid.sparqlmotion.lib.internal.ImportNewsFeedModule.createGraph(ImportNewsFeedModule.java:37)
... 7 more
I was able to reproduce this issue. Our Newsfeed importer had trouble
with handling blank nodes. Since this example relies on an external URL,
outside of our control, the data has apparently changed to a format that
was previously not encountered. I have fixed this for 5.0. Meanwhile,
you'd need to try some other newsfeed, or skip this tutorial exercise.
For the exercise 1 in the tutorial, I had to specify a targetFilePath
in "Load Countries". Otherwise it displays a warning "missing value
augument targetFilePath", and got error messages when I clicked RUN.
I cannot reproduce this. "Load Countries" should not even ask for
targetFilePath - assuming it has type sml:ImportRDFFromURL. Could you
double-check that you didn't instantiate some other type here? Please
send us the file if you are unsure.
Thanks,
Holger
java.lang.reflect.InvocationTargetException
at
org.topbraidcomposer.sparqlmotion.actions.AbstractExecuteSPARQLMotionAction$1.run(AbstractExecuteSPARQLMotionAction.java:153)
at org.topbraidcomposer.core.util.ThreadUtil$1$1.run(ThreadUtil.java:64)
at java.lang.Thread.run(Unknown Source)
Caused by: org.topbraid.spin.sparqlmotion.modules.SMException: the
string value is missing for targetFilePath
at
org.topbraid.spin.sparqlmotion.modules.AbstractSMModule.getConfigString(AbstractSMModule.java:526)
at
org.topbraid.spin.sparqlmotion.modules.AbstractSMModule.getConfigString(AbstractSMModule.java:488)
at
org.topbraid.spin.sparqlmotion.modules.AbstractSMModule.getConfigString(AbstractSMModule.java:475)
at
org.topbraid.spin.sparqlmotion.modules.AbstractSMModule.getConfigFile(AbstractSMModule.java:377)
at
org.topbraid.spin.sparqlmotion.lib.internal.ImportFileFromURLModule.execute(ImportFileFromURLModule.java:32)
at
org.topbraid.spin.sparqlmotion.engine.impl.ExecutionEngineImpl.execute(ExecutionEngineImpl.java:202)
at
org.topbraid.spin.sparqlmotion.engine.impl.ExecutionEngineImpl.executeModule(ExecutionEngineImpl.java:168)
at
org.topbraid.spin.sparqlmotion.engine.impl.ExecutionEngineImpl.execute(ExecutionEngineImpl.java:118)
at
org.topbraidcomposer.sparqlmotion.views.console.SPARQLMotionConsole.execute(SPARQLMotionConsole.java:79)
at
org.topbraidcomposer.sparqlmotion.actions.AbstractExecuteSPARQLMotionAction$1.run(AbstractExecuteSPARQLMotionAction.java:142)
... 2 more
If I specify a targetFilePath, the output of this module won't go to
the next module "Export All" - export to RDF file.
Here are the session data:
eclipse.buildId=unknown
java.version=1.7.0_67
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=en_US
Command-line arguments: -os win32 -ws win32 -arch x86_64
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