Re: error running rdfstats
ok...it was a problem due to the hadoop configuration files!thanks a lotnow rdfstats starts! :D 2015-02-23 10:55 GMT+01:00 Rob Vesse rve...@dotnetrdf.org: If there job is stuck in a Pending state that is usually an issue with the configuration of your Hadoop cluster e.g. insufficient resources Those kinds of questions are best addressed to the Hadoop community or your Hadoop distribution vendor if you are using a non-Apache distribution Rob On 20/02/2015 14:07, Carmen Manzulli carmenmanzu...@gmail.com wrote: ok...now it seems to be able to start to execute the job but it rest in pending status for a lot..what kind of problem could be ? 2015-02-20 11:29 GMT+01:00 Carmen Manzulli carmenmanzu...@gmail.com: Thanks a lotI was thinking about a Hadoop configuration problem..sorry for this question.. 2015-02-19 19:01 GMT+01:00 Rob Vesse rve...@dotnetrdf.org: --nodecount is not a valid argument so it is being treated as a file name The correct argument is --node-count Rob On 19/02/2015 16:12, Carmen Manzulli carmenmanzu...@gmail.com wrote: Hi, i don't know why but i'm getting this error: Input path does not exist: hdfs://master:54310/user/sisinflab/--nodecount org.apache.hadoop.mapreduce.lib.input.InvalidInputException: Input path does not exist: hdfs://master:54310/user/sisinflab/--nodecount at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.singleThreadedLis tSt atus(FileInputFormat.java:321) at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.listStatus(FileIn put Format.java:264) at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.getSplits(FileInp utF ormat.java:385) at org.apache.hadoop.mapreduce.JobSubmitter.writeNewSplits(JobSubmitter.ja va: 597) at org.apache.hadoop.mapreduce.JobSubmitter.writeSplits(JobSubmitter.java: 614 ) at org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter .ja va:492) at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1296) at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1293) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:415) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformati on. java:1628) at org.apache.hadoop.mapreduce.Job.submit(Job.java:1293) at org.apache.jena.hadoop.rdf.stats.RdfStats.runJob(RdfStats.java:297) at org.apache.jena.hadoop.rdf.stats.RdfStats.computeStatistic(RdfStats.jav a:2 78) at org.apache.jena.hadoop.rdf.stats.RdfStats.run(RdfStats.java:264) at org.apache.jena.hadoop.rdf.stats.RdfStats.run(RdfStats.java:180) at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70) at org.apache.jena.hadoop.rdf.stats.RdfStats.main(RdfStats.java:136) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.ja va: 57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccesso rIm pl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.hadoop.util.RunJar.run(RunJar.java:221) at org.apache.hadoop.util.RunJar.main(RunJar.java:136) when i try to run the command: hadoop jar /home/sisinflab/NetBeansProjects/prova/target/prova-1.0-SNAPSHOT-jar-wi th- dependencies.jar org.apache.jena.hadoop.rdf.stats.RdfStats --nodecount --data-types --namespaces --output hdfs:///prove/output --input-type triples hdfs:///input/persondata_en.ttl could anyone help me? thanks in advance
Re: model.empty()
model.isEmpty() should be enough:
http://jena.apache.org/documentation/javadoc/jena/com/hp/hpl/jena/rdf/model/Model.html#isEmpty()
On Mon, Mar 2, 2015 at 6:58 PM, Maarten van Dessel
maarten.vandes...@ugent.be wrote:
I'm sorry for the inconvenience, it was a mistake on my end.
Apparently model.listStatements.hasNext() does seem to test correctly if
a model is empty.
Op 2-mrt.-2015, om 18:04 heeft Martynas Jusevičius marty...@graphity.org
het volgende geschreven:
What's the query code? You are probably querying from an inferencing
model that imports example.com ontology.
On Mon, Mar 2, 2015 at 4:58 PM, Maarten van Dessel
maartenvandes...@hotmail.com wrote:
Hi everyone,
I'm using construct queries in a project. I want to make decisions based on
wether the constructed model contains any data. Is there any way on how
this can be known?
Example query:
CONSTRUCT
{ ?person http://example.com#hasStatus http://example.com#Occupied .}
WHERE
{ ?person http://example.com#hasStatus http://example.com#Free .}
Printing the resulting model (which seems empty):
rdf:RDF
xmlns:rdf=http://www.w3.org/1999/02/22-rdf-syntax-ns#;
xmlns:owl=http://www.w3.org/2002/07/owl#;
xmlns:example=http://example.com#;
xmlns:rdfs=http://www.w3.org/2000/01/rdf-schema#;
xmlns:xsd=http://www.w3.org/2001/XMLSchema#;
/rdf:RDF
My attempt to check wether a model is empty:
StmtIterator nodeIterator = model.listStatements();
if (nodeIterator.hasNext()) {
// do something
}
This however doesn't work, since there are still triples returned in the
iterator:
[http://example.com#hasStatus,
http://www.w3.org/1999/02/22-rdf-syntax-ns#type,
http://www.w3.org/2002/07/owl#ObjectProperty]
Any thoughts are appreciated.
Thanks,
Maarten
Print a model without the option ^^http://www.w3.org/2001/XMLSchema#string
Hi, everyone, my question today is a little strange but i need it for a integration with a exisisting project, there is a way to write a model without the option of the literal object? In the specific only for the string object. I solved for now with other java code (Scanner,read,replace,ecc.) but I wanted to know if jena allows me to do it directly in some way, for example: I have this: Subject Predicate myLiteralString^^ http://www.w3.org/2001/XMLSchema#string ... Subject Predicate myLiteralString^^ http://www.w3.org/2001/XMLSchema#long Subject Predicate myLiteralString^^ http://www.w3.org/2001/XMLSchema#decimal Subject Predicate myLiteralString^^ http://www.w3.org/2001/XMLSchema#string but i want to print this: Subject Predicate myLiteralString ... Subject Predicate myLiteralString^^ http://www.w3.org/2001/XMLSchema#long Subject Predicate myLiteralString^^ http://www.w3.org/2001/XMLSchema#decimal Subject Predicate myLiteralString Ty, in advance. greetings.
TripleFilterBySubjectUriMapper information
Hi all, I'm carmen and I want to ask you if there are some specific MapOutputKey and MapOutputValue classes to indicate when execute TrypleFilterBySubjectMapper thank you in advance for the answer. :) Carmen.
Re: Print a model without the option ^^http://www.w3.org/2001/XMLSchema#string
What if you try something like this?
https://gist.github.com/stain/be58129e5ac382668f53
public static class SimpleLiteralStreamRDF extends StreamRDFProxy {
public SimpleLiteralStreamRDF(StreamRDF writer) {
super(writer);
}
@Override
public void triple(Triple triple) {
Node object = triple.getObject();
if (object.isLiteral()) {
Literal literal =
ResourceFactory.createPlainLiteral(object.getLiteralLexicalForm());
triple = new Triple(triple.getSubject(),
triple.getPredicate(), literal.asNode());
}
super.triple(triple);
}
}
Model model = ModelFactory.createDefaultModel();
model.add(ResourceFactory.createResource(),
ResourceFactory.createProperty(http://example.com/hasDouble;),
ResourceFactory.createTypedLiteral(13.37,
XSDDatatype.XSDdouble));
model.add(ResourceFactory.createResource(),
ResourceFactory.createProperty(http://example.com/hasString;),
ResourceFactory.createTypedLiteral(uhu,
XSDDatatype.XSDstring));
model.add(ResourceFactory.createResource(),
ResourceFactory.createProperty(http://example.com/hasLang;),
ResourceFactory.createLangLiteral(Hello, en-GB));
final StreamRDF writer =
StreamRDFWriter.getWriterStream(System.out, Lang.TURTLE);
StreamRDF literalWriter = new SimpleLiteralStreamRDF(writer);
StreamOps.graphToStream(model.getGraph(), literalWriter);
The above outputs:
_:b0http://example.com/hasLang Hello .
_:b1http://example.com/hasDouble 13.37 .
_:b2http://example.com/hasString uhu .
Note that I could not quickly find the equivalent of my StreamRDFProxy
(see the gist) - PipedTriplesStream is not quite that as it needs a
PipedRDFIterator instead of another StreamRDF.
On 2 March 2015 at 14:53, Marco Tenti tentimar...@gmail.com wrote:
Hi, everyone, my question today is a little strange but i need it for a
integration with a exisisting project, there is a way to write a model
without the option of the literal object? In the specific only for the
string object.
I solved for now with other java code (Scanner,read,replace,ecc.) but I wanted
to know if jena allows me to do it directly in some way, for example:
I have this:
Subject Predicate myLiteralString^^
http://www.w3.org/2001/XMLSchema#string
...
Subject Predicate myLiteralString^^
http://www.w3.org/2001/XMLSchema#long
Subject Predicate myLiteralString^^
http://www.w3.org/2001/XMLSchema#decimal
Subject Predicate myLiteralString^^
http://www.w3.org/2001/XMLSchema#string
but i want to print this:
Subject Predicate myLiteralString
...
Subject Predicate myLiteralString^^
http://www.w3.org/2001/XMLSchema#long
Subject Predicate myLiteralString^^
http://www.w3.org/2001/XMLSchema#decimal
Subject Predicate myLiteralString
Ty, in advance. greetings.
--
Stian Soiland-Reyes
Apache Taverna (incubating)
http://orcid.org/-0001-9842-9718
Re: Print a model without the option ^^http://www.w3.org/2001/XMLSchema#string
On 02/03/15 14:53, Marco Tenti wrote: Hi, everyone, my question today is a little strange but i need it for a integration with a exisisting project, there is a way to write a model without the option of the literal object? In the specific only for the string object. I solved for now with other java code (Scanner,read,replace,ecc.) but I wanted to know if jena allows me to do it directly in some way, for example: I have this: Subject Predicate myLiteralString^^ http://www.w3.org/2001/XMLSchema#string ... Subject Predicate myLiteralString^^ http://www.w3.org/2001/XMLSchema#long Subject Predicate myLiteralString^^ http://www.w3.org/2001/XMLSchema#decimal Subject Predicate myLiteralString^^ http://www.w3.org/2001/XMLSchema#string but i want to print this: Subject Predicate myLiteralString ... Subject Predicate myLiteralString^^ http://www.w3.org/2001/XMLSchema#long Subject Predicate myLiteralString^^ http://www.w3.org/2001/XMLSchema#decimal Subject Predicate myLiteralString Ty, in advance. greetings. i.e. write xsd:string as a simple literal. That's what you will get in RDF 1.1. All simple literals are xsd:string and output does not print the ^^xsd:string. In RDF 1.0 (RDF 2004, RDF current), they are different RDF terms. The next release of Jena will have all the machinery for RDF 1.1 but it's switched off by default. The plan is to turn it on at Jena3 because it impacts persistent data (TDB, SDB). You can try that, at your own risk, by taking a development build (or the next release 2.13.0) and setting JenaRuntime.isRDF11 = true ; Do not run on a database if your data has any xsd:strings in it as yours clearly has. Also, if anyone is building directly from git, the tests will not all pass ... the first test is whether the system is in RDF 1.0 mode, not RDF 1.1, to make sure a release does not slip out with the wrong setting. There are some ARQ tests that change - and a conversion script in the source tree. Andy
model.empty()
Hi everyone,
I'm using construct queries in a project. I want to make decisions based on
wether the constructed model contains any data. Is there any way on how this
can be known?
Example query:
CONSTRUCT
{ ?person http://example.com#hasStatus http://example.com#Occupied .}
WHERE
{ ?person http://example.com#hasStatus http://example.com#Free .}
Printing the resulting model (which seems empty):
rdf:RDF
xmlns:rdf=http://www.w3.org/1999/02/22-rdf-syntax-ns#;
xmlns:owl=http://www.w3.org/2002/07/owl#;
xmlns:example=http://example.com#;
xmlns:rdfs=http://www.w3.org/2000/01/rdf-schema#;
xmlns:xsd=http://www.w3.org/2001/XMLSchema#;
/rdf:RDF
My attempt to check wether a model is empty:
StmtIterator nodeIterator = model.listStatements();
if (nodeIterator.hasNext()) {
// do something
}
This however doesn't work, since there are still triples returned in the
iterator:
[http://example.com#hasStatus,
http://www.w3.org/1999/02/22-rdf-syntax-ns#type,
http://www.w3.org/2002/07/owl#ObjectProperty]
Any thoughts are appreciated.
Thanks,
Maarten
Re: model.empty()
I'm sorry for the inconvenience, it was a mistake on my end.
Apparently model.listStatements.hasNext() does seem to test correctly if a
model is empty.
Op 2-mrt.-2015, om 18:04 heeft Martynas Jusevičius marty...@graphity.org
het volgende geschreven:
What's the query code? You are probably querying from an inferencing
model that imports example.com ontology.
On Mon, Mar 2, 2015 at 4:58 PM, Maarten van Dessel
maartenvandes...@hotmail.com wrote:
Hi everyone,
I'm using construct queries in a project. I want to make decisions based on
wether the constructed model contains any data. Is there any way on how this
can be known?
Example query:
CONSTRUCT
{ ?person http://example.com#hasStatus http://example.com#Occupied .}
WHERE
{ ?person http://example.com#hasStatus http://example.com#Free .}
Printing the resulting model (which seems empty):
rdf:RDF
xmlns:rdf=http://www.w3.org/1999/02/22-rdf-syntax-ns#;
xmlns:owl=http://www.w3.org/2002/07/owl#;
xmlns:example=http://example.com#;
xmlns:rdfs=http://www.w3.org/2000/01/rdf-schema#;
xmlns:xsd=http://www.w3.org/2001/XMLSchema#;
/rdf:RDF
My attempt to check wether a model is empty:
StmtIterator nodeIterator = model.listStatements();
if (nodeIterator.hasNext()) {
// do something
}
This however doesn't work, since there are still triples returned in the
iterator:
[http://example.com#hasStatus,
http://www.w3.org/1999/02/22-rdf-syntax-ns#type,
http://www.w3.org/2002/07/owl#ObjectProperty]
Any thoughts are appreciated.
Thanks,
Maarten
