jena

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How to install Jena SemanticWeb Framework in Play Framework

I put jena jar files in the lib folder and see the message: A JPA error occurred (Cannot start a JPA manager without a[详细]

2023-02-28 11:08 分类：问答
Resolve prefix programmatically, Jena

I have to parse through xml which contain URI links to dbpedia.org. I have to extract rdf triples from those URI based on a given Ontology using Jena library. How do I resolve the Prefix programmatica[详细]

2023-02-27 04:32 分类：问答
Convert String to model or Statement in jena using Java program?

I made a program for RDF by using jena in java... I have to return the result in string format.. and then in other function i have to get it as a string format and convert it to either model or statem[详细]

2023-02-26 00:38 分类：问答
How to get namespace of the property in dbpedia by giving the property name using jena?

I am trying to 开发者_JAVA百科get the value of property genre in the following dbpedia link using sparql in jena http://dbpedia.org/page/Black_Sabbath[详细]

2023-02-26 00:00 分类：问答
Exception while using createOntologyModel

package tutorial; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException;[详细]

2023-02-25 19:41 分类：问答
Attempt to have ResultSet from a CONSTRUCT query Exception

i am attempting to use the following query: QUERY=\"PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> \\n\" +[详细]

2023-02-25 17:56 分类：问答
Sparql Query Format

i am getting the 开发者_开发知识库 results of a query as sodium^^http://www.w3.org/2001/xmlschema/string[详细]

2023-02-25 13:48 分类：问答
Create query in sparql using jena without hard coding the query? [closed]

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical andcannot be reasonably answered in its current form. For help clari[详细]

2023-02-25 04:58 分类：问答
How to extract RDF triples from XML file using an existing ontology?

I am trying to extract RDF triples from XML files by using an existing开发者_开发技巧 ontology. I am using Java, and can use XPath to extract data from XML and Jena to read and write RDF documents and[详细]

2023-02-25 03:04 分类：问答
Exception while Querying ontology

QUERY=\" PREFIX table: <http://www.daml.org/2003/01/periodictable/PeriodicTable#> \\n\"+ \"SELECT ?name ?symbol ?weight ?number \\n\"+[详细]

2023-02-24 23:58 分类：问答