jena

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Java web service error

I got this error \'java.lang.ClassNotFoundException: com.hp.hpl.jena.rdf.model.Model\' when I run my java web service which implement a jena framework function such as OWL reading function. But it wor[详细]

2023-01-15 06:34 分类：问答
Implement a semantic search with in a web application

This web application is about posting different kind of posts to the web application where users can search those posts by a text-based search. Basically a post has following attributes.[详细]

2023-01-13 00:52 分类：问答
How do I query/update a remote RDF-endpoint with Jena

I would like to send updates to a remote endpoint over http. I have found that joseki serves as such an endpoint.[详细]

2023-01-11 22:46 分类：问答
How to add OWL:imports to a .owl file by jena

I am new to Jena. I want to create a new OntModel and need to imports some other ontology to this model.If I write it to file, I expect the file can show something like follow:[详细]

2023-01-09 10:44 分类：问答
SPARQL - what does it take to find an ontology?

I\'m pretty new to SPARQL, OWL and Jena, so please excuse if I\'m asking utterly stupid questions. I\'m having a problem that is driving me nuts since a couple of days. I\'m using the following String[详细]

2023-01-05 06:33 分类：问答
Problem of reading OWL/XML

I have a problem reading OWL/XML files from Java using Jena. I have no problem reading RDF/XML files, but whenever I create a OWL/XML file from Protege and try to read it, Java gives this error belo[详细]

2023-01-03 18:37 分类：问答
Problem in inferring instances that have integer cardinality constraint

I have created an RDF/OWL file using Protege 4.1 alpha. I also created a defined class in Protege called CheapPhone. This class has a restriction which is shown below :[详细]

2023-01-03 13:16 分类：问答
Inferring using Jena

InfModel infmodel = ModelFactory.createInfModel(reasoner, m); Resource vegetarian = infmodel.getResource(source + \"开发者_JAVA技巧Vegetarian\");[详细]

2023-01-02 23:32 分类：问答
Jena ontology API

I\'m new to Jena and Protégé.I did some stuff with these. I have some problems: Do I need to use SPARQL query to get the ontology classes, subclasses, properties, and values, or can I do it with O[详细]

2023-01-02 21:05 分类：问答
Get string value of semantic property

In my ontology I have the class called \"festival\" and it has pr开发者_如何学JAVAoperty value called \"CRISTMAS\". It\'s a string type value. How can I get this value using Jena OWL API?I guess you h[详细]

2023-01-02 19:19 分类：问答