Even i don't know where that particular date is coming from. The dataset is attached.
On Fri, Aug 10, 2018 at 3:57 AM, Andy Seaborne <[email protected]> wrote: > >> But i have given the type as xsd:dateTime, so it should take it right? > > The computer says otherwise. > > >>myfn:LastModified(?r) > > >> "2005-11-06T00:00:00Z"^^xsd:dateTime ) > > "2005-11-06T00:00:00Z"^^xsd:dateTime is OK > > >> "1969-12-31T19:00:00"^^xsd:date > > Not OK. Find out where "1969-12-31T19:00:00" comes from. Is it in the data? > > Andy > > > > > On 10/08/18 06:53, Lorenz Buehmann wrote: > >> which type? in the function or in the data? both have to match, there is >> no implicit conversion I guess. >> >> >> On 09.08.2018 21:29, Arunkumar Krishnamoorthy wrote: >> >>> 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$AppClassLoader.loadClass(Launcher.j >>>>>>>>>> >>>>>>>>>> I have added the .class file in the directory. Do i need to >>>>>>>>>> package >>>>>>>>>> >>>>>>>>> the >>>> >>>>> dependancy jars also? Please advice. >>>>>>>>>> >>>>>>>>>> Regards, >>>>>>>>>> Arun >>>>>>>>>> >>>>>>>>>> On Tue, Aug 7, 2018 at 2:11 PM, Arunkumar Krishnamoorthy < >>>>>>>>>> [email protected]> wrote: >>>>>>>>>> >>>>>>>>>> It is executing now Andy. Thanks a lot. I missed to add the >>>>>>>>>> >>>>>>>>> directory. >>>> >>>>> Thanks again for this help. >>>>>>>>>>> >>>>>>>>>>> On Tue, Aug 7, 2018 at 2:06 PM, Andy Seaborne <[email protected]> >>>>>>>>>>> wrote: >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> On 07/08/18 18:07, Arunkumar Krishnamoorthy wrote: >>>>>>>>>>>> >>>>>>>>>>>> So my JENA_CP >>>>>>>>>>>> >>>>>>>>>>>>> is JENA_CP='/home/ak/Downloads/ap >>>>>>>>>>>>> ache-jena-3.8.0/lib/*:/home/ak >>>>>>>>>>>>> /Documents'. >>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>> Does the file >>>>>>>>>>>> >>>>>>>>>>>> /home/ak/Documents/samplejena/LastModified.class >>>>>>>>>>>> >>>>>>>>>>>> exist? >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> /home/ak/Documents location has the classfile/jar of the code >>>>>>>>>>>> >>>>>>>>>>>>> But still when i run this command, >>>>>>>>>>>>> >>>>>>>>>>>>> /home/ak/Downloads/apache-jena-3.8.0/bin/arq --data >>>>>>>>>>>>> /home/ak/Desktop/dataset.rdf --query /home/ak/Desktop/query.rq >>>>>>>>>>>>> >>>>>>>>>>>>> I am getting the below error, >>>>>>>>>>>>> >>>>>>>>>>>>> ak@akrish12:~$ /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 >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> >>>>>>>>>>>>>> >>>>>>> >>>> >>
ldodds.rdf
Description: application/rdf
