jena

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Let the user enter the filename

I created an interface that allows to add instances in an rdf file. I put the filepath in the readRDFfile parameter and the same filepath in Filewriter (in order to update the file when user add insta[详细]

2023-03-29 23:49 分类：问答
I cannot remove values of data type properties in Jena

I\'m trying to remove values of datatype properties of an instance through an interface which I created in java but it does not work. It gives me an[详细]

2023-03-28 13:38 分类：问答
Jena: how to dynamically create JavaBeans from SPARQL results?

Is it possible to have Jena or开发者_高级运维 some other library automatically generate a Javabean for results returned from a SPARQL query?I find accessing the results via Jena\'s Resultset to be tir[详细]

2023-03-28 09:29 分类：问答
How can I modify or remove properties values? - Jena API

I\'m using Jena. I would like to know if there is a method that allows to modify or remov开发者_JAVA百科e properties values of an instance?[详细]

2023-03-28 04:41 分类：问答
API Jena - Button "Next" of my interface is not working properly

I\'m using Jena. I created an interface that allows to add, modify and remove instances in rdf file. I have a problem with Button Next. It works but not perfectly. I would like that it returns to the[详细]

2023-03-27 19:49 分类：问答
API Jena - Get values of data properties

I created an interface in java with 4 labels, 4 textfields and some buttons like \"Add\", \"modify, \"next\", etc. The user will enter name, first name, birth date, etc. After clicking the button \"ad[详细]

2023-03-27 19:26 分类：问答
How to increment a Resource?

开发者_JAVA百科I have a function that adds instances (and their properties values) of class Person in a RDF file when I click on the Add button. I can add the first instance, but when I try to add the[详细]

2023-03-27 05:08 分类：问答
Jena/ARQ: Difference between Model, Graph and DataSet

I\'m starting to work with the Jena Engine and I think I got a grasp of what semantics are. H开发者_JAVA技巧owever I\'m having a hard time understanding the different ways to represent a bunch of trip[详细]

2023-03-26 09:57 分类：问答
Querying TDB from Java returning nothing

I am trying to query a TDB database that has a few entries of RDF from a DBpedia dataset for testing, later on it will have much more entries.[详细]

2023-03-24 18:08 分类：问答
Jena Java Api to read RDF file?

I have a rdf file which has format: <rdf:RDF xmlns:geo=\"xyz\" xmlns:quality=\"xyz\" xmlns:purl=\"xyz\"[详细]

2023-03-14 20:17 分类：问答