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jena | Apache Jena , a Java framework | Machine Learning library

 by   apache Java Version: Current License: Apache-2.0

 by   apache Java Version: Current License: Apache-2.0

Download this library from

kandi X-RAY | jena Summary

jena is a Java library typically used in Artificial Intelligence, Machine Learning applications. jena has no bugs, it has build file available, it has a Permissive License and it has high support. However jena has 1 vulnerabilities. You can download it from GitHub.
Welcome to Apache Jena, a Java framework for writing Semantic Web applications. See http://jena.apache.org/ for the project website, including documentation.
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Support
Quality
Quality
Security
Security
License
License
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kandi-support Support

  • jena has a highly active ecosystem.
  • It has 824 star(s) with 559 fork(s). There are 84 watchers for this library.
  • It had no major release in the last 12 months.
  • There are 1 open issues and 5 have been closed. On average issues are closed in 0 days. There are 6 open pull requests and 0 closed requests.
  • It has a positive sentiment in the developer community.
  • The latest version of jena is current.
jena Support
Best in #Machine Learning
Average in #Machine Learning
jena Support
Best in #Machine Learning
Average in #Machine Learning

quality kandi Quality

  • jena has 0 bugs and 0 code smells.
jena Quality
Best in #Machine Learning
Average in #Machine Learning
jena Quality
Best in #Machine Learning
Average in #Machine Learning

securitySecurity

  • jena has 1 vulnerability issues reported (0 critical, 1 high, 0 medium, 0 low).
  • jena code analysis shows 0 unresolved vulnerabilities.
  • There are 0 security hotspots that need review.
jena Security
Best in #Machine Learning
Average in #Machine Learning
jena Security
Best in #Machine Learning
Average in #Machine Learning

license License

  • jena is licensed under the Apache-2.0 License. This license is Permissive.
  • Permissive licenses have the least restrictions, and you can use them in most projects.
jena License
Best in #Machine Learning
Average in #Machine Learning
jena License
Best in #Machine Learning
Average in #Machine Learning

buildReuse

  • jena releases are not available. You will need to build from source code and install.
  • Build file is available. You can build the component from source.
  • It has 599005 lines of code, 64785 functions and 6336 files.
  • It has high code complexity. Code complexity directly impacts maintainability of the code.
jena Reuse
Best in #Machine Learning
Average in #Machine Learning
jena Reuse
Best in #Machine Learning
Average in #Machine Learning
Top functions reviewed by kandi - BETA

kandi has reviewed jena and discovered the below as its top functions. This is intended to give you an instant insight into jena implemented functionality, and help decide if they suit your requirements.

  • move to the next state
    • Build var expression list .
      • This method is called to apply the specified facet to the validation context .
        • Parse an aggregate
          • Runs the program .
            • Compile an element group .
              • load all casts and casts .
                • Process the modules and construct classes .
                  • Reads a yyyy character from the input stream .
                    • Registers the namespace mapping .

                      Get all kandi verified functions for this library.

                      Get all kandi verified functions for this library.

                      jena Key Features

                      Apache Jena

                      jena Examples and Code Snippets

                      See all related Code Snippets

                      Jena JavaScript custom functions scriptEngine null error

                      copy iconCopydownload iconDownload
                      FROM ghcr.io/graalvm/graalvm-ce:ol8-java17-22.0.0.2-b2
                      
                      RUN gu install nodejs
                      
                      RUN curl -s -S --fail --location --max-redirs 3 https://repo1.maven.org/maven2/org/apache/jena/jena-fuseki-server/4.4.0/jena-fuseki-server-4.4.0.jar --output jena-fuseki-server-4.4.0.jar
                      
                      RUN adduser -M fuseki
                      
                      USER fuseki
                      
                      EXPOSE 3030
                      
                      ENTRYPOINT ["java", "-jar", "jena-fuseki-server-4.4.0.jar"]
                      CMD []
                      
                      docker build -t fuseki .
                      
                      docker run -it --rm -p "3030:3030" --name sparql1 -v $(pwd)/functions.js:/functions.js fuseki --update --set arq:js-library=/functions.js --mem /ds
                      
                      % curl -X POST -d @query.rq localhost:3030/ds/query
                      
                      { "head": {
                          "vars": [ "input" , "X" ]
                        } ,
                        "results": {
                          "bindings": [
                            { 
                              "input": { "type": "literal" , "value": "some woRDs to PROCESS" } ,
                              "X": { "type": "literal" , "value": "someWordsToProcess" }
                            }
                          ]
                        }
                      }
                      
                      FROM ghcr.io/graalvm/graalvm-ce:ol8-java17-22.0.0.2-b2
                      
                      RUN gu install nodejs
                      
                      RUN curl -s -S --fail --location --max-redirs 3 https://repo1.maven.org/maven2/org/apache/jena/jena-fuseki-server/4.4.0/jena-fuseki-server-4.4.0.jar --output jena-fuseki-server-4.4.0.jar
                      
                      RUN adduser -M fuseki
                      
                      USER fuseki
                      
                      EXPOSE 3030
                      
                      ENTRYPOINT ["java", "-jar", "jena-fuseki-server-4.4.0.jar"]
                      CMD []
                      
                      docker build -t fuseki .
                      
                      docker run -it --rm -p "3030:3030" --name sparql1 -v $(pwd)/functions.js:/functions.js fuseki --update --set arq:js-library=/functions.js --mem /ds
                      
                      % curl -X POST -d @query.rq localhost:3030/ds/query
                      
                      { "head": {
                          "vars": [ "input" , "X" ]
                        } ,
                        "results": {
                          "bindings": [
                            { 
                              "input": { "type": "literal" , "value": "some woRDs to PROCESS" } ,
                              "X": { "type": "literal" , "value": "someWordsToProcess" }
                            }
                          ]
                        }
                      }
                      
                      FROM ghcr.io/graalvm/graalvm-ce:ol8-java17-22.0.0.2-b2
                      
                      RUN gu install nodejs
                      
                      RUN curl -s -S --fail --location --max-redirs 3 https://repo1.maven.org/maven2/org/apache/jena/jena-fuseki-server/4.4.0/jena-fuseki-server-4.4.0.jar --output jena-fuseki-server-4.4.0.jar
                      
                      RUN adduser -M fuseki
                      
                      USER fuseki
                      
                      EXPOSE 3030
                      
                      ENTRYPOINT ["java", "-jar", "jena-fuseki-server-4.4.0.jar"]
                      CMD []
                      
                      docker build -t fuseki .
                      
                      docker run -it --rm -p "3030:3030" --name sparql1 -v $(pwd)/functions.js:/functions.js fuseki --update --set arq:js-library=/functions.js --mem /ds
                      
                      % curl -X POST -d @query.rq localhost:3030/ds/query
                      
                      { "head": {
                          "vars": [ "input" , "X" ]
                        } ,
                        "results": {
                          "bindings": [
                            { 
                              "input": { "type": "literal" , "value": "some woRDs to PROCESS" } ,
                              "X": { "type": "literal" , "value": "someWordsToProcess" }
                            }
                          ]
                        }
                      }
                      
                      FROM ghcr.io/graalvm/graalvm-ce:ol8-java17-22.0.0.2-b2
                      
                      RUN gu install nodejs
                      
                      RUN curl -s -S --fail --location --max-redirs 3 https://repo1.maven.org/maven2/org/apache/jena/jena-fuseki-server/4.4.0/jena-fuseki-server-4.4.0.jar --output jena-fuseki-server-4.4.0.jar
                      
                      RUN adduser -M fuseki
                      
                      USER fuseki
                      
                      EXPOSE 3030
                      
                      ENTRYPOINT ["java", "-jar", "jena-fuseki-server-4.4.0.jar"]
                      CMD []
                      
                      docker build -t fuseki .
                      
                      docker run -it --rm -p "3030:3030" --name sparql1 -v $(pwd)/functions.js:/functions.js fuseki --update --set arq:js-library=/functions.js --mem /ds
                      
                      % curl -X POST -d @query.rq localhost:3030/ds/query
                      
                      { "head": {
                          "vars": [ "input" , "X" ]
                        } ,
                        "results": {
                          "bindings": [
                            { 
                              "input": { "type": "literal" , "value": "some woRDs to PROCESS" } ,
                              "X": { "type": "literal" , "value": "someWordsToProcess" }
                            }
                          ]
                        }
                      }
                      

                      Block implicit location mapping loading in Jena

                      copy iconCopydownload iconDownload
                              LocationMapper lm = new LocationMapper();
                              LocationMapper.setGlobalLocationMapper(lm);
                              JenaSystem.init();
                      

                      Search, pagination and sorting features not applying to datatable

                      copy iconCopydownload iconDownload
                      <table id="ex">
                      <thead>
                          <tr></tr>
                          <tr></tr>
                          <tr></tr>
                      </thead>
                      <tbody>
                          <td></td>
                          <td></td>
                          <td></td>
                      </tbody>
                      </table>
                      

                      How to convert a map to html table in Go

                      copy iconCopydownload iconDownload
                      package main
                      
                      import (
                          "html/template"
                          "os"
                      )
                      
                      const tplStr = `<table>
                          <thead>
                              <tr>
                                  <th>Teacher</th>
                                  <th>Student</th>
                                  <th>Blue Pens</th>
                                  <th>Red Pens</th>
                              </tr>
                          </thead>
                          <tbody>
                              {{range $teacher, $rows := . }}
                                  {{ $first := true }}
                                  {{ range $student, $colors := . }}
                                  <tr>
                                      <td>{{ if $first }}{{ $first = false }}{{ $teacher }}{{ end }}</td>
                                      <td>{{ $student }}</td>
                                      <td>{{ $colors.Blue }}</td>
                                      <td>{{ $colors.Red }}</td>
                                  </tr>
                                  {{ end }}
                              {{ end }}
                          </tbody>
                      </table>`
                      
                      type color struct {
                          Blue int
                          Red  int
                      }
                      
                      func fetchData() map[string]map[string]color {
                          return map[string]map[string]color{
                              "joe": {
                                  "alex": {
                                      Blue: 3,
                                      Red:  6,
                                  },
                                  "may": {
                                      Blue: 2,
                                      Red:  6,
                                  },
                              },
                              "jena": {
                                  "fred": color{
                                      Blue: 1,
                                      Red:  2,
                                  },
                              },
                          }
                      }
                      
                      func main() {
                          tpl, err := template.New("table").Parse(tplStr)
                          if err != nil {
                              panic(err)
                          }
                      
                          err = tpl.Execute(os.Stdout, fetchData())
                          if err != nil {
                              panic(err)
                          }
                      }
                      

                      optimizing a SPARQL query when using a custom function in Jena

                      copy iconCopydownload iconDownload
                      SELECT ?label ?distance ?visibility  
                      {
                         {SELECT ?label ?distance  
                          WHERE {   
                            ?wpt rdf:type inav:Waypoint .   
                            ?wpt inav:Label ?label .  
                            ?ac  rdf:type inav:Aircraft . 
                            ?ac  inav:Label "myAircraft" . 
                            ?wpt inav:hasExactGeometry ?geom .   
                            ?geom inav:asWKT ?wkt .   
                            ?ac inav:hasExactGeometry ?geom2 .   
                            ?geom2 inav:asWKT ?wkt2 .   
                            BIND (geof:distance(?wkt, ?wkt2, <http://www.opengis.net/def/uom/OGC/1.0/nauticalMile>) as ?distance)  
                         } ORDER BY ASC(?distance ) LIMIT 1
                      }  BIND (my:visibility(?wpt) as ?visibility)
                      }
                      

                      How to get in Jena the exact range of an ObjectProperty with restrictions?

                      copy iconCopydownload iconDownload
                      model.read(...);
                      OntProperty property = model.getOntProperty("http://localhost/TEST#hasWaypoint");   
                      ExtendedIterator properties = property.listRange();
                      OntClass thisClass = (OntClass) properties.next();
                      String range_localname = thisClass.getLocalName();
                      if (range_localname == null) {
                           Resource resource = null;
                           Restriction restriction = thisClass.asRestriction();
                           if (restriction.isAllValuesFromRestriction()) {
                              AllValuesFromRestriction restriction1 = restriction.asAllValuesFromRestriction();
                              resource = restriction1.getAllValuesFrom();
                           } else if (restriction.isHasValueRestriction()) {
                              HasValueRestriction restriction1 = restriction.asHasValueRestriction();
                              resource = restriction1.getHasValue().asResource();
                           } else if (restriction.isSomeValuesFromRestriction()) {
                              SomeValuesFromRestriction restriction1 = restriction.asSomeValuesFromRestriction();
                              resource = restriction1.getSomeValuesFrom();
                           } else if (restriction.isMaxCardinalityRestriction()) {
                              MaxCardinalityRestriction restriction1 = restriction.asMaxCardinalityRestriction();
                              resource = restriction1.getIsDefinedBy();
                           } else if (restriction.isMinCardinalityRestriction()) {
                              MinCardinalityRestriction restriction1 = restriction.asMinCardinalityRestriction();
                              resource = restriction1.getIsDefinedBy();
                           } else if (restriction.isCardinalityRestriction()) {
                              CardinalityRestriction restriction1 = restriction.asCardinalityRestriction();
                              resource = restriction1.getIsDefinedBy();
                           }
                           if (resource != null) {
                              range_localname = resource.getLocalName();
                           }
                        }
                        System.out.println("Range localName: " + range_localname);
                      
                      Range localName: Waypoint
                      
                      model.read(...);
                      OntProperty property = model.getOntProperty("http://localhost/TEST#hasWaypoint");   
                      ExtendedIterator properties = property.listRange();
                      OntClass thisClass = (OntClass) properties.next();
                      String range_localname = thisClass.getLocalName();
                      if (range_localname == null) {
                           Resource resource = null;
                           Restriction restriction = thisClass.asRestriction();
                           if (restriction.isAllValuesFromRestriction()) {
                              AllValuesFromRestriction restriction1 = restriction.asAllValuesFromRestriction();
                              resource = restriction1.getAllValuesFrom();
                           } else if (restriction.isHasValueRestriction()) {
                              HasValueRestriction restriction1 = restriction.asHasValueRestriction();
                              resource = restriction1.getHasValue().asResource();
                           } else if (restriction.isSomeValuesFromRestriction()) {
                              SomeValuesFromRestriction restriction1 = restriction.asSomeValuesFromRestriction();
                              resource = restriction1.getSomeValuesFrom();
                           } else if (restriction.isMaxCardinalityRestriction()) {
                              MaxCardinalityRestriction restriction1 = restriction.asMaxCardinalityRestriction();
                              resource = restriction1.getIsDefinedBy();
                           } else if (restriction.isMinCardinalityRestriction()) {
                              MinCardinalityRestriction restriction1 = restriction.asMinCardinalityRestriction();
                              resource = restriction1.getIsDefinedBy();
                           } else if (restriction.isCardinalityRestriction()) {
                              CardinalityRestriction restriction1 = restriction.asCardinalityRestriction();
                              resource = restriction1.getIsDefinedBy();
                           }
                           if (resource != null) {
                              range_localname = resource.getLocalName();
                           }
                        }
                        System.out.println("Range localName: " + range_localname);
                      
                      Range localName: Waypoint
                      
                      model.read(...);
                      OntProperty property = model.getOntProperty("http://localhost/TEST#hasWaypoint");   
                      ExtendedIterator properties = property.listRange();
                      OntClass thisClass = (OntClass) properties.next();
                      String range_localname = thisClass.getLocalName();
                      if (range_localname == null) {
                           Resource resource = null;
                           Restriction restriction = thisClass.asRestriction();
                           if (restriction.isAllValuesFromRestriction()) {
                              AllValuesFromRestriction restriction1 = restriction.asAllValuesFromRestriction();
                              resource = restriction1.getAllValuesFrom();
                           } else if (restriction.isHasValueRestriction()) {
                              HasValueRestriction restriction1 = restriction.asHasValueRestriction();
                              resource = restriction1.getHasValue().asResource();
                           } else if (restriction.isSomeValuesFromRestriction()) {
                              SomeValuesFromRestriction restriction1 = restriction.asSomeValuesFromRestriction();
                              resource = restriction1.getSomeValuesFrom();
                           } else if (restriction.isMaxCardinalityRestriction()) {
                              MaxCardinalityRestriction restriction1 = restriction.asMaxCardinalityRestriction();
                              resource = restriction1.getIsDefinedBy();
                           } else if (restriction.isMinCardinalityRestriction()) {
                              MinCardinalityRestriction restriction1 = restriction.asMinCardinalityRestriction();
                              resource = restriction1.getIsDefinedBy();
                           } else if (restriction.isCardinalityRestriction()) {
                              CardinalityRestriction restriction1 = restriction.asCardinalityRestriction();
                              resource = restriction1.getIsDefinedBy();     
                           } else {
                              // qualified restrictions can be handled like that
                              RDFNode node = restriction.getPropertyValue(OWL2.onClass);
                              resource = node.asResource();
                           }
                           if (resource != null) {
                              range_localname = resource.getLocalName();
                           }
                        }
                        System.out.println("Range localName: " + range_localname);
                      

                      Accessing Object Property for Individual using Apache Jena

                      copy iconCopydownload iconDownload
                      final Property p = model.createObjectProperty("http://example.org/Treated_by");
                      final RDFNode object = i.getPropertyValue(p);
                      

                      Query on string not working in SPARQL with Fuseki (MAKG dataset)

                      copy iconCopydownload iconDownload
                      ?paper prism:keyword ?X . FILTER(str(?X) = "hydrogen")
                      
                      PREFIX ...
                      
                      SELECT ?paperTitle ?paperPubDate WHERE {
                        SERVICE <https://makg.org/sparql> {
                          SELECT * {
                            ?paper rdf:type magc:Paper .
                            ?paper prism:keyword "hydrogen"^^xsd:string .
                            ?paper fabio:hasDiscipline ?field .
                            ?paper dcterms:title ?paperTitle .
                            ?paper prism:publicationDate ?paperPubDate .
                          } LIMIT 100
                        }
                      }
                      
                      ?paper prism:keyword ?X . FILTER(str(?X) = "hydrogen")
                      
                      PREFIX ...
                      
                      SELECT ?paperTitle ?paperPubDate WHERE {
                        SERVICE <https://makg.org/sparql> {
                          SELECT * {
                            ?paper rdf:type magc:Paper .
                            ?paper prism:keyword "hydrogen"^^xsd:string .
                            ?paper fabio:hasDiscipline ?field .
                            ?paper dcterms:title ?paperTitle .
                            ?paper prism:publicationDate ?paperPubDate .
                          } LIMIT 100
                        }
                      }
                      

                      How can I implement openllet reasoner to my stain/jena-fuseki Docker image

                      copy iconCopydownload iconDownload
                      FROM stain/jena-fuseki:4.0.0
                      
                      #This is made to stop Issue with JVM locks
                      
                      RUN apt-get update; \
                          apt-get install -y --no-install-recommends procps
                      
                      RUN mkdir -p /fuseki/ontologies/
                      RUN mkdir -p /fuseki/configuration/
                      RUN mkdir -p /fuseki/extra/
                      
                      RUN mkdir -p /fuseki
                      WORKDIR /fuseki
                      
                      COPY server/openllet/jar_files extra
                      COPY server/configuration configuration
                      COPY server/test ontologies
                      

                      REGEX with letters and underscores in SPARQL

                      copy iconCopydownload iconDownload
                      BIND(replace(?ng, ".*_", "") AS ?subj)
                      

                      See all related Code Snippets

                      Community Discussions

                      Trending Discussions on jena
                      • java.lang.UnsupportedClassVersionError trying to run Jena ARQ to follow along with O'Reilly SPARQL book
                      • Jena JavaScript custom functions scriptEngine null error
                      • Block implicit location mapping loading in Jena
                      • Storing RDF to Triple Store as input: Conversion from CSV to RDF
                      • Search, pagination and sorting features not applying to datatable
                      • How to convert a map to html table in Go
                      • optimizing a SPARQL query when using a custom function in Jena
                      • How to get in Jena the exact range of an ObjectProperty with restrictions?
                      • Accessing Object Property for Individual using Apache Jena
                      • Query on string not working in SPARQL with Fuseki (MAKG dataset)
                      Trending Discussions on jena

                      QUESTION

                      java.lang.UnsupportedClassVersionError trying to run Jena ARQ to follow along with O'Reilly SPARQL book

                      Asked 2022-Mar-19 at 18:04

                      I'm trying to get Jena ARQ as suggested in O'Reilly SPARQL 1.1 book so I can follow along with the query examples in the book. I've downloaded apache-jena-.4.0.zip from jena.apache.org/download/index.cgi and follwed the instructions to extract and set JENA_HOME and PATH environmet variables.

                      When I run ARQ.bat from windows cmd terminal I get

                      Error: A JNI error has occurred, please check your installation and try again
                      Exception in thread "main" java.lang.UnsupportedClassVersionError: arq/arq has been 
                      compiled by a more recent version of the Java Runtime (class file version 55.0), 
                      this version of the Java Runtime only recognizes class file versions up to 52.0
                      

                      Reading help on that error message on this forum and elsewhere suggests I either recompile the class (I can't do that) or update Java runtime. So I've removed and reinstalled Java JRE 64--bit for Windows from https://www.java.com/en/download/ 64-bit Java for Windows Release date: January 18, 2022

                      and rebooted machine.

                      Running java -version from cmd prompt gives me

                      Java(TM) SE Runtime Environment (build 1.8.0_321-b07)
                      Java HotSpot(TM) 64-Bit Server VM (build 25.321-b07, mixed mode)
                      

                      However the java.lang.UnsupportedClassVersionError persists

                      Any ideas please? Or any other simple way of executing a SPARQL query file against a local data file so I can can follow along withe th SPARQL book?

                      ANSWER

                      Answered 2022-Mar-19 at 18:04

                      Class file version 55.0 is equivalent to Java 11 (can be seen for example here). However, the Java version you install from java.com is Java 8. Therefore you need to use at least Java 11, but newer versions (e.g. Java 17) might work as well.

                      You can obtain newer versions of the Oracle JDK here, or you can use Open JDK builds, for example from here. See for example this question for differences between the Oracle JDK and Open JDK.

                      Source https://stackoverflow.com/questions/71540155

                      Community Discussions, Code Snippets contain sources that include Stack Exchange Network

                      Vulnerabilities

                      No vulnerabilities reported

                      Install jena

                      You can download it from GitHub.
                      You can use jena like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the jena component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .

                      Support

                      For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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