But i have given the type as xsd:dateTime, so it should take it right? On Thu, Aug 9, 2018 at 3:24 PM, ajs6f <[email protected]> wrote:
> > 13:44:11 WARN NodeValue :: Datatype format exception: > > "1969-12-31T19:00:00"^^xsd:date > > No, Jena is just telling you (quite correctly) that "1969-12-31T19:00:00" > is not an xsd:date. Notice the time that is included. xsd:date does not > include time. > > ajs6f > > > On Aug 9, 2018, at 2:35 PM, Arunkumar Krishnamoorthy <[email protected]> > wrote: > > > > Hello Andy, > > > > I am getting the below error when i run the query against the dataset > > shared with you, > > > > PREFIX myfn: <java:samplejena.> > > PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> > > PREFIX dc: <http://purl.org/dc/elements/1.1/> > > PREFIX xsd: <http://www.w3.org/2001/XMLSchema#> > > SELECT ?title ?r > > WHERE { > > ?s rdfs:seeAlso ?r. > > OPTIONAL {?r dc:title ?title.} > > FILTER ( isURI(?r) && > > myfn:LastModified(?r) > > > "2005-11-06T00:00:00Z"^^xsd:dateTime ) > > } > > > > 13:44:11 WARN NodeValue :: Datatype format exception: > > "1969-12-31T19:00:00"^^xsd:date > > > > Is this because of any old version or something? > > > > > > > > On Thu, Aug 9, 2018 at 6:34 AM, Andy Seaborne <[email protected]> wrote: > > > >> Good question - there is still a noticeable tail of com.hp.hpl, here and > >> on Stackoverflow. > >> > >> Some is due to old apps; that is good in that the software is useful > >> enough to be used for such a long time. > >> > >> I suspect that some of the rest is university courses providing the > >> materials that have not been updated. > >> > >> (Jena3 was 2015-07-29) > >> > >> Andy > >> > >> > >> On 09/08/18 06:48, Lorenz Buehmann wrote: > >> > >>> I'm always wondering how people that are new to Apache Jena still use > >>> the old version. I mean, the first hit via Google is the Apache Jena > >>> webpage which clearly refers to the latest version. > >>> > >>> In the current case, he just copied the code example from [1] which > >>> indeed uses the old version given that the blog entry is from 2005. > >>> Well, at this time I didn't know about Semantic Web at all... > >>> > >>> [1] http://www.ldodds.com/projects/sparql/LastModified.txt > >>> > >>> > >>> On 08.08.2018 22:14, Andy Seaborne wrote: > >>> > >>>> com.hp.hpl.jena -- that's Jena2. > >>>> > >>>> Packages are "org.apache.jena" in Jena3. > >>>> > >>>> The code seems to have been compiled against Jena2 and run against > >>>> Jena3. That won't work. > >>>> > >>>> Andy > >>>> > >>>> On 08/08/18 18:14, Arunkumar Krishnamoorthy wrote: > >>>> > >>>>> The java code i am executing is, > >>>>> > >>>>> package samplejena; > >>>>> > >>>>> import com.hp.hpl.jena.query.expr.NodeValue; > >>>>> import com.hp.hpl.jena.query.function.FunctionBase1; > >>>>> > >>>>> import java.net.*; > >>>>> import java.text.SimpleDateFormat; > >>>>> import java.util.*; > >>>>> > >>>>> public class LastModified extends FunctionBase1 > >>>>> { > >>>>> private static final SimpleDateFormat format = new > >>>>> SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss"); > >>>>> private Map _cache; > >>>>> public LastModified() > >>>>> { > >>>>> _cache = new HashMap(); > >>>>> } > >>>>> public NodeValue exec(NodeValue nodeValue) > >>>>> { > >>>>> String value = nodeValue.asString(); > >>>>> if (_cache.containsKey(value)) > >>>>> { > >>>>> return (NodeValue)_cache.get(value); > >>>>> } > >>>>> String lastModified = ""; > >>>>> try { > >>>>> lastModified = getLastModified( nodeValue.asString() ); > >>>>> } catch (Exception e) { > >>>>> // TODO Auto-generated catch block > >>>>> e.printStackTrace(); > >>>>> } > >>>>> > >>>>> NodeValue date = NodeValue.makeDate(lastModified); > >>>>> _cache.put(value, date); > >>>>> return date; > >>>>> } > >>>>> public String getLastModified(String link) throws Exception > >>>>> { > >>>>> URL url = new URL(link); > >>>>> URLConnection connection = url.openConnection(); > >>>>> connection.setAllowUserInteraction(false); > >>>>> long secs = connection.getLastModified(); > >>>>> String xsdDate = dateToXSD(secs); > >>>>> return xsdDate; > >>>>> } > >>>>> public String dateToXSD(long secs) > >>>>> { > >>>>> Date date = new Date(secs); > >>>>> return format.format(date); > >>>>> } > >>>>> } > >>>>> > >>>>> > >>>>> > >>>>> On Wed, Aug 8, 2018 at 1:14 PM, Arunkumar Krishnamoorthy > >>>>> <[email protected]> > >>>>> wrote: > >>>>> > >>>>> Hello Andy, > >>>>>> > >>>>>> I am getting the following issue when i run the code, > >>>>>> > >>>>>> Caused by: java.lang.ClassNotFoundException: com.hp.hpl.jena.query. > >>>>>> function.FunctionBase1 > >>>>>> at java.net.URLClassLoader.findClass(URLClassLoader.java:381) > >>>>>> at java.lang.ClassLoader.loadClass(ClassLoader.java:424) > >>>>>> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.j > >>>>>> > >>>>>> I have added the .class file in the directory. Do i need to package > the > >>>>>> dependancy jars also? Please advice. > >>>>>> > >>>>>> Regards, > >>>>>> Arun > >>>>>> > >>>>>> On Tue, Aug 7, 2018 at 2:11 PM, Arunkumar Krishnamoorthy < > >>>>>> [email protected]> wrote: > >>>>>> > >>>>>> It is executing now Andy. Thanks a lot. I missed to add the > directory. > >>>>>>> Thanks again for this help. > >>>>>>> > >>>>>>> On Tue, Aug 7, 2018 at 2:06 PM, Andy Seaborne <[email protected]> > >>>>>>> wrote: > >>>>>>> > >>>>>>> > >>>>>>>> > >>>>>>>> On 07/08/18 18:07, Arunkumar Krishnamoorthy wrote: > >>>>>>>> > >>>>>>>> So my JENA_CP > >>>>>>>>> is JENA_CP='/home/ak/Downloads/apache-jena-3.8.0/lib/*:/home/ak > >>>>>>>>> /Documents'. > >>>>>>>>> > >>>>>>>>> > >>>>>>>> Does the file > >>>>>>>> > >>>>>>>> /home/ak/Documents/samplejena/LastModified.class > >>>>>>>> > >>>>>>>> exist? > >>>>>>>> > >>>>>>>> > >>>>>>>> > >>>>>>>> /home/ak/Documents location has the classfile/jar of the code > >>>>>>>>> > >>>>>>>>> But still when i run this command, > >>>>>>>>> > >>>>>>>>> /home/ak/Downloads/apache-jena-3.8.0/bin/arq --data > >>>>>>>>> /home/ak/Desktop/dataset.rdf --query /home/ak/Desktop/query.rq > >>>>>>>>> > >>>>>>>>> I am getting the below error, > >>>>>>>>> > >>>>>>>>> ak@akrish12:~$ /home/ak/Downloads/apache-jena-3.8.0/bin/arq > --data > >>>>>>>>> /home/ak/Desktop/dataset.rdf --query /home/ak/Desktop/query.rq > >>>>>>>>> 12:41:35 WARN ClsLoader :: Class not found: > >>>>>>>>> samplejena.LastModified > >>>>>>>>> 12:41:35 WARN exec :: URI > >>>>>>>>> <java:samplejena.LastModified> > >>>>>>>>> has no registered function factory > >>>>>>>>> ------------- > >>>>>>>>> | title | r | > >>>>>>>>> ============= > >>>>>>>>> ------------- > >>>>>>>>> > >>>>>>>>> > >>>>>>>>> Regards, > >>>>>>>>> Arun > >>>>>>>>> > >>>>>>>>> On Tue, Aug 7, 2018 at 12:20 PM, Andy Seaborne <[email protected]> > >>>>>>>>> wrote: > >>>>>>>>> > >>>>>>>>> The list doesn't accept attachments. > >>>>>>>>> > >>>>>>>>>> > >>>>>>>>>> JENA_CP="$JENA_HOME"'/home/ak/Documents' > >>>>>>>>>> > >>>>>>>>>>> > >>>>>>>>>>>> > >>>>>>>>>>> This needs to be a valid java classpath. > >>>>>>>>>> > >>>>>>>>>> $JENA_HOME is directory of the Jena installation. > >>>>>>>>>> > >>>>>>>>>> In the original it says: > >>>>>>>>>> > >>>>>>>>>> JENA_CP="$JENA_HOME"'/lib/*' > >>>>>>>>>> > >>>>>>>>>> the .../lib/* (NB single quotes - no * expansion) puts all the > >>>>>>>>>> jars in > >>>>>>>>>> that direct on the classpath. > >>>>>>>>>> > >>>>>>>>>> For you: > >>>>>>>>>> > >>>>>>>>>> JENA_CP='/home/ak/Downloads/apache-jena-3.8.0/lib/*' > >>>>>>>>>> > >>>>>>>>>> You need to add the package/classfile tree for you code. > >>>>>>>>>> > >>>>>>>>>> As you have: java:samplejena > >>>>>>>>>> > >>>>>>>>>> Suppoose /DIR is the top of that directory tree so "samplejena" > >>>>>>>>>> is one > >>>>>>>>>> directory within /DIR. > >>>>>>>>>> > >>>>>>>>>> You then want: > >>>>>>>>>> > >>>>>>>>>> JENA_CP='/home/afs/jlib/apache-jena/lib/*:/DIR' > >>>>>>>>>> > >>>>>>>>>> : is the classpath separator. > >>>>>>>>>> > >>>>>>>>>> Andy > >>>>>>>>>> > >>>>>>>>>> On 07/08/18 16:25, Arunkumar Krishnamoorthy wrote: > >>>>>>>>>> > >>>>>>>>>> Hello, > >>>>>>>>>> > >>>>>>>>>>> > >>>>>>>>>>> I have attached the file with the change, i am getting Could > >>>>>>>>>>> not find > >>>>>>>>>>> or > >>>>>>>>>>> load main class arq.arq > >>>>>>>>>>> > >>>>>>>>>>> My classpath location is /home/ak/Documents. Please let me know > >>>>>>>>>>> whether > >>>>>>>>>>> my change is correct. > >>>>>>>>>>> > >>>>>>>>>>> Regards, > >>>>>>>>>>> Arun > >>>>>>>>>>> > >>>>>>>>>>> > >>>>>>>>>>> On Tue, Aug 7, 2018 at 11:11 AM, Andy Seaborne < > [email protected] > >>>>>>>>>>> <mailto: > >>>>>>>>>>> [email protected]>> wrote: > >>>>>>>>>>> > >>>>>>>>>>> Hi - Please send email to the jena users mailing list. > >>>>>>>>>>> > >>>>>>>>>>> (It is correct if it works!) > >>>>>>>>>>> > >>>>>>>>>>> Andy > >>>>>>>>>>> > >>>>>>>>>>> > >>>>>>>>>>> > >>>>>>>>>> > >>>>>>>>>> > >>>>>>>>> > >>>>>>> > >>>>>> > >>>>> > >>> > >>> > >
