castagna/jena-examples

A collection of ready to use, small and self contained examples on how to use Apache Jena

jena-examples's Issues

error: package org.apache.jena.rdf.model does not exist

When excecute ...\main\java\org\apache\jena\examples\javac ExampleIO_01.java

7 errors in total

apache-jena will be support java 11?

Failed to execute goal on project jena-examples: Could not resolve dependencies for project org.apache.jena:jena-examples:jar:0.1-SNAPSHOT:

mvn package
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building Apache Jena Examples 0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[WARNING] The POM for org.apache.jena:jena-core:jar:2.10.0-SNAPSHOT is missing, no dependency information available
[WARNING] The POM for org.apache.jena:jena-iri:jar:0.9.5-SNAPSHOT is missing, no dependency information available
[WARNING] The POM for org.apache.jena:jena-arq:jar:2.10.0-SNAPSHOT is missing, no dependency information available
[WARNING] The POM for org.apache.jena:jena-tdb:jar:0.10.0-SNAPSHOT is missing, no dependency information available
[WARNING] The POM for org.apache.jena:jena-larq:jar:1.0.1-SNAPSHOT is missing, no dependency information available
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.070s
[INFO] Finished at: Fri Dec 13 15:16:28 EST 2013
[INFO] Final Memory: 7M/239M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project jena-examples: Could not resolve dependencies for project org.apache.jena:jena-examples:jar:0.1-SNAPSHOT: The following artifacts could not be resolved: org.apache.jena:jena-core:jar:2.10.0-SNAPSHOT, org.apache.jena:jena-iri:jar:0.9.5-SNAPSHOT, org.apache.jena:jena-arq:jar:2.10.0-SNAPSHOT, org.apache.jena:jena-tdb:jar:0.10.0-SNAPSHOT, org.apache.jena:jena-larq:jar:1.0.1-SNAPSHOT: Failure to find org.apache.jena:jena-core:jar:2.10.0-SNAPSHOT in https://repository.apache.org/content/repositories/snapshots/ was cached in the local repository, resolution will not be reattempted until the update interval of apache-snapshots-repo has elapsed or updates are forced -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/DependencyResolutionException

With -e switch ..

mvn package -e
[INFO] Error stacktraces are turned on.
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building Apache Jena Examples 0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[WARNING] The POM for org.apache.jena:jena-core:jar:2.10.0-SNAPSHOT is missing, no dependency information available
[WARNING] The POM for org.apache.jena:jena-iri:jar:0.9.5-SNAPSHOT is missing, no dependency information available
[WARNING] The POM for org.apache.jena:jena-arq:jar:2.10.0-SNAPSHOT is missing, no dependency information available
[WARNING] The POM for org.apache.jena:jena-tdb:jar:0.10.0-SNAPSHOT is missing, no dependency information available
[WARNING] The POM for org.apache.jena:jena-larq:jar:1.0.1-SNAPSHOT is missing, no dependency information available
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.050s
[INFO] Finished at: Fri Dec 13 15:31:35 EST 2013
[INFO] Final Memory: 7M/239M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project jena-examples: Could not resolve dependencies for project org.apache.jena:jena-examples:jar:0.1-SNAPSHOT: The following artifacts could not be resolved: org.apache.jena:jena-core:jar:2.10.0-SNAPSHOT, org.apache.jena:jena-iri:jar:0.9.5-SNAPSHOT, org.apache.jena:jena-arq:jar:2.10.0-SNAPSHOT, org.apache.jena:jena-tdb:jar:0.10.0-SNAPSHOT, org.apache.jena:jena-larq:jar:1.0.1-SNAPSHOT: Failure to find org.apache.jena:jena-core:jar:2.10.0-SNAPSHOT in https://repository.apache.org/content/repositories/snapshots/ was cached in the local repository, resolution will not be reattempted until the update interval of apache-snapshots-repo has elapsed or updates are forced -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal on project jena-examples: Could not resolve dependencies for project org.apache.jena:jena-examples:jar:0.1-SNAPSHOT: The following artifacts could not be resolved: org.apache.jena:jena-core:jar:2.10.0-SNAPSHOT, org.apache.jena:jena-iri:jar:0.9.5-SNAPSHOT, org.apache.jena:jena-arq:jar:2.10.0-SNAPSHOT, org.apache.jena:jena-tdb:jar:0.10.0-SNAPSHOT, org.apache.jena:jena-larq:jar:1.0.1-SNAPSHOT: Failure to find org.apache.jena:jena-core:jar:2.10.0-SNAPSHOT in https://repository.apache.org/content/repositories/snapshots/ was cached in the local repository, resolution will not be reattempted until the update interval of apache-snapshots-repo has elapsed or updates are forced
at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.getDependencies(LifecycleDependencyResolver.java:210)
at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.resolveProjectDependencies(LifecycleDependencyResolver.java:117)
at org.apache.maven.lifecycle.internal.MojoExecutor.ensureDependenciesAreResolved(MojoExecutor.java:258)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:201)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Caused by: org.apache.maven.project.DependencyResolutionException: Could not resolve dependencies for project org.apache.jena:jena-examples:jar:0.1-SNAPSHOT: The following artifacts could not be resolved: org.apache.jena:jena-core:jar:2.10.0-SNAPSHOT, org.apache.jena:jena-iri:jar:0.9.5-SNAPSHOT, org.apache.jena:jena-arq:jar:2.10.0-SNAPSHOT, org.apache.jena:jena-tdb:jar:0.10.0-SNAPSHOT, org.apache.jena:jena-larq:jar:1.0.1-SNAPSHOT: Failure to find org.apache.jena:jena-core:jar:2.10.0-SNAPSHOT in https://repository.apache.org/content/repositories/snapshots/ was cached in the local repository, resolution will not be reattempted until the update interval of apache-snapshots-repo has elapsed or updates are forced
at org.apache.maven.project.DefaultProjectDependenciesResolver.resolve(DefaultProjectDependenciesResolver.java:189)
at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.getDependencies(LifecycleDependencyResolver.java:185)
... 22 more
Caused by: org.sonatype.aether.resolution.DependencyResolutionException: The following artifacts could not be resolved: org.apache.jena:jena-core:jar:2.10.0-SNAPSHOT, org.apache.jena:jena-iri:jar:0.9.5-SNAPSHOT, org.apache.jena:jena-arq:jar:2.10.0-SNAPSHOT, org.apache.jena:jena-tdb:jar:0.10.0-SNAPSHOT, org.apache.jena:jena-larq:jar:1.0.1-SNAPSHOT: Failure to find org.apache.jena:jena-core:jar:2.10.0-SNAPSHOT in https://repository.apache.org/content/repositories/snapshots/ was cached in the local repository, resolution will not be reattempted until the update interval of apache-snapshots-repo has elapsed or updates are forced
at org.sonatype.aether.impl.internal.DefaultRepositorySystem.resolveDependencies(DefaultRepositorySystem.java:375)
at org.apache.maven.project.DefaultProjectDependenciesResolver.resolve(DefaultProjectDependenciesResolver.java:183)
... 23 more
Caused by: org.sonatype.aether.resolution.ArtifactResolutionException: The following artifacts could not be resolved: org.apache.jena:jena-core:jar:2.10.0-SNAPSHOT, org.apache.jena:jena-iri:jar:0.9.5-SNAPSHOT, org.apache.jena:jena-arq:jar:2.10.0-SNAPSHOT, org.apache.jena:jena-tdb:jar:0.10.0-SNAPSHOT, org.apache.jena:jena-larq:jar:1.0.1-SNAPSHOT: Failure to find org.apache.jena:jena-core:jar:2.10.0-SNAPSHOT in https://repository.apache.org/content/repositories/snapshots/ was cached in the local repository, resolution will not be reattempted until the update interval of apache-snapshots-repo has elapsed or updates are forced
at org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:538)
at org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolveArtifacts(DefaultArtifactResolver.java:216)
at org.sonatype.aether.impl.internal.DefaultRepositorySystem.resolveDependencies(DefaultRepositorySystem.java:358)
... 24 more
Caused by: org.sonatype.aether.transfer.ArtifactNotFoundException: Failure to find org.apache.jena:jena-core:jar:2.10.0-SNAPSHOT in https://repository.apache.org/content/repositories/snapshots/ was cached in the local repository, resolution will not be reattempted until the update interval of apache-snapshots-repo has elapsed or updates are forced
at org.sonatype.aether.impl.internal.DefaultUpdateCheckManager.newException(DefaultUpdateCheckManager.java:230)
at org.sonatype.aether.impl.internal.DefaultUpdateCheckManager.checkArtifact(DefaultUpdateCheckManager.java:204)
at org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:427)
... 26 more
[ERROR]
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/DependencyResolutionException

Where is the java file "ExampleINF_NN.java" ?

“If you are interested in ontologies and inference look at ExampleONT_NN.java
and ExampleINF_NN.java.” - README.txt
I look for java file "ExampleINF_NN.java" in "jena-examples/src/main/java", but I can't find any file named after "ExampleINF", no matter github online or local download.

Add header comments to the examples

Great that you have examples in place.
But isn't the first thing to have for every example a description?

Resource http://www.w3.org/TR/rdf-schema/rdfs-namespace was removed

Please use another resource in ExampleIO_02.

The endpoint "http://api.kasabi.com/dataset/italy/apis/sparql" is not working

It seems that the endpoint

'http://api.kasabi.com/dataset/italy/apis/sparql'

which is used in several cases of SPARQL tutorials, is not working any more. Running the code will throw

java.lang.Long cannot be cast to java.lang.Integer

exception, can anybody provide an option to this or if there exists already some solutions that I didn't follow ?

"mvn package" fails.

I am following closely the instructions provided in setting up jena-examples. However, after I executed "mvn package" command, I received the following error in Maven:

[ERROR] Failed to execute goal on project jena-examples: Could not resolve dependencies for project org.apache.jena:jena-example
s:jar:0.1-SNAPSHOT: The following artifacts could not be resolved: org.apache.jena:jena-core:jar:2.7.4-SNAPSHOT, org.apache.jena
:jena-iri🫙0.9.4-SNAPSHOT, org.apache.jena:jena-arq🫙2.9.4-SNAPSHOT, org.apache.jena:jena-tdb🫙0.9.4-SNAPSHOT: Could no
t find artifact org.apache.jena:jena-core:jar:2.7.4-SNAPSHOT in apache-snapshots-repo (https://repository.apache.org/content/rep
ositories/snapshots/) -> [Help 1]

Is there anything I didn't setup probably? Or Was it because the Jena respository for Maven is not updated?

ava.lang.NoClassDefFoundError: org/w3c/dom/ElementTraversal

Runtime exception, when run example org.apache.jena.examples.ExampleAPI_01

java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.jena.rdf.model.impl.IO_Ctl.callByRefection(IO_Ctl.java:64)
at org.apache.jena.rdf.model.impl.IO_Ctl.init(IO_Ctl.java:36)
at org.apache.jena.util.FileManager.(FileManager.java:86)
at org.apache.jena.examples.ExampleAPI_01.main(ExampleAPI_01.java:31)
Caused by: java.lang.NoClassDefFoundError: org/w3c/dom/ElementTraversal
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at org.apache.xerces.parsers.AbstractDOMParser.startDocument(Unknown Source)
at org.apache.xerces.impl.dtd.XMLDTDValidator.startDocument(Unknown Source)
at org.apache.xerces.impl.XMLDocumentScannerImpl.startEntity(Unknown Source)
at org.apache.xerces.impl.XMLVersionDetector.startDocumentParsing(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.DOMParser.parse(Unknown Source)
at org.apache.xerces.jaxp.DocumentBuilderImpl.parse(Unknown Source)
at sun.util.xml.PlatformXmlPropertiesProvider.getLoadingDoc(PlatformXmlPropertiesProvider.java:106)
at sun.util.xml.PlatformXmlPropertiesProvider.load(PlatformXmlPropertiesProvider.java:78)
at java.util.Properties$XmlSupport.load(Properties.java:1201)
at java.util.Properties.loadFromXML(Properties.java:881)
at org.apache.jena.util.Metadata.read(Metadata.java:75)
at org.apache.jena.util.Metadata.addMetadata(Metadata.java:53)
at org.apache.jena.util.Metadata.(Metadata.java:47)
at org.apache.jena.JenaRuntime.(JenaRuntime.java:89)
at org.apache.jena.riot.system.stream.JenaIOEnvironment.getGlobalConfigPath(JenaIOEnvironment.java:69)
at org.apache.jena.riot.system.stream.JenaIOEnvironment.getLocationMapper(JenaIOEnvironment.java:45)
at org.apache.jena.riot.system.stream.StreamManager.makeDefaultStreamManager(StreamManager.java:73)
at org.apache.jena.riot.system.stream.StreamManager.(StreamManager.java:85)
at org.apache.jena.riot.adapters.AdapterFileManager.makeGlobal(AdapterFileManager.java:147)
at org.apache.jena.riot.adapters.AdapterFileManager.get(AdapterFileManager.java:106)
at org.apache.jena.riot.IO_Jena.wireIntoJena(IO_Jena.java:35)
at org.apache.jena.riot.RIOT.init(RIOT.java:66)
... 8 more
Caused by: java.lang.ClassNotFoundException: org.w3c.dom.ElementTraversal
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 45 more
Exception in thread "main" java.lang.NoClassDefFoundError: Could not initialize class org.apache.jena.JenaRuntime
at org.apache.jena.util.LocationMapper.getGlobalConfigPath(LocationMapper.java:241)
at org.apache.jena.util.LocationMapper.get(LocationMapper.java:69)
at org.apache.jena.util.FileManager.makeGlobal(FileManager.java:129)
at org.apache.jena.util.FileManager.get(FileManager.java:95)
at org.apache.jena.examples.ExampleAPI_01.main(ExampleAPI_01.java:31)

Later, added following dependency in pom.xml to solve this issue.

xml-apis
xml-apis
1.4.01