Controlling RDF Prefix in Java
We can also control prefixes of RDF files with the use
of Jena API for RDF. In RDF file there are two ways for Controlling RDF
prefixes.
First is explicit prefix controlling and second is
implicit prefix definition controlling. Here we have created prefix definitions
with the explicit prefix definitions.
We have created one resource "root" with
one property. To create resources we have to use createResource() method
of Model interface. To add property in this model we have used createProperty()
method of Model interface.
Model model = ModelFactory.createDefaultModel();
Resource root = model.createResource(
"http://amit/Kumar#"+"root");
Property property = model.createProperty(
"http://amit/Kumar#"+"Property");
Resource child = model.createResource(
"http://amit/Kumar#" +"child");
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Above lines of code creates an object of Model interface
and then we have created two resources first is root and second is child and
then we have added these with the Model interface method add().
model.add(root,property,child) adds resources to
the graph model. Following is the full source code of RDFPrefix.java.
RDFPrefix.java
import java.io.*;
import com.hp.hpl.jena.rdf.model.*;
import com.hp.hpl.jena.vocabulary.*;
public class RDFPrefix extends Object {
public static void main (String args[]) {
Model model = ModelFactory.createDefaultModel();
Resource root = model.createResource(
"http://amit/Kumar#"+"root");
Property property = model.createProperty(
"http://amit/Kumar#"+"Property");
Resource child = model.createResource(
"http://amit/Kumar#" +"child");
model.add(root,property,child);
model.write( System.out );
}
}
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To run this example :
- Create and save RDFPrefix.java
- Compile RDFPrefix.java
- Run RDFPrefix class file and you will get following
output.
Output:
Download Source Code
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