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AGAddStatements.java

package com.franz.ag.examples;



import com.franz.ag.*;



public class AGAddStatements {



    /**

     * Demonstrates some basics of adding triples over a socket.

     * 

     * @param args unused

     * @throws AllegroGraphException 

     */

    public static void main(String[] args) throws AllegroGraphException {

        // Connect to server, which must already be running.

        AllegroGraphConnection ags = new AllegroGraphConnection();

        try {

            ags.enable();

        } catch (Exception e) {

            throw new AllegroGraphException("Server connection problem", e);

        }

        // Create a fresh triple-store for this example.

        AllegroGraph ts = ags.renew("addstatements", AGPaths.TRIPLE_STORES);

        

        // Add a single triple to the store

        ts.addStatement("<http://example.org/Dog>",  

                "<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>",  

                "<http://www.w3.org/2002/07/owl#Class>"); 



        // For bulk loading over a socket, it is more efficient to buffer 

        // the operation by grouping the triple components into arrays. 

        // The following statement creates 4 triples from corresponding 

        // elements of the arrays.

        ts.addStatements(  

        new String[]{  

            "<http://example.org/Cat>",  

            "<http://example.org/Dog>",  

            "<http://example.org/Giraffe>",  

            "<http://example.org/Lion>" },  

        new String[]{  

            "<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>",  

            "<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>",  

            "<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>",  

            "<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>" },  

        new String[]{  

            "<http://www.w3.org/2002/07/owl#Class>",  

            "<http://www.w3.org/2002/07/owl#Class>",  

            "<http://www.w3.org/2002/07/owl#Class>",  

            "<http://www.w3.org/2002/07/owl#Class>" }  

        );                             



        // When an array consists of identical elements, it can be 

        // shortened to a single element. The following statement 

        // creates 4 triples where the predicate and object 

        // components are identical.

        ts.addStatements(  

            new String[]{  

                "<http://example.org/Cat>",  

                "<http://example.org/Dog>",  

                "<http://example.org/Giraffe>",  

                "<http://example.org/Lion>" },  

            new String[]{"<http://www.w3.org/2000/01/rdf-schema#subClassOf>"},  

            new String[]{"<http://example.org/Mammal>"}  

        ); 

        

        System.out.println("Added " + ts.numberOfTriples() + " triples to the store.");

        

        // Close the store and disconnect from the server.

        ts.closeTripleStore();

        ags.disable();

    }

}
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