AGSNAPaths.java

package com.franz.agbase.examples;

import com.franz.agbase.*;

public class AGSNAPaths {

    /**
     * Demonstrates using search paths in a Social Network.
     * 
     * @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.
        AllegroGraph ts = ags.renew("snapaths", AGPaths.TRIPLE_STORES);
        
        // Register namespaces
        ts.registerNamespace("ex", "http://example.org/");
        
        // Load a small graph of data
        AGLoadNtriples.loadNTriplesWithTiming(ts, AGPaths.dataSources("sna-doublediamond.nt"));
        
        // Get an SNA extension instance for this store to work with SNA features 
        SNAExtension sna = ts.getSNAExtension();
        
        // Register a generator
        Object[] parts = new Object[2];
        parts[0] = "objects-of";
        parts[1] = "!ex:to";
        sna.registerGenerator("to", parts);
        
        UPI[] bfsPath = sna.breadthFirstSearch("!ex:a", "!ex:h", "to", 0);
        AGUtils.printUPIArray("BFS path: ", ts, bfsPath);
        
        UPI[][] bfsPaths = sna.allBreadthFirstSearchPaths("!ex:a", "!ex:h", "to", 0);
        System.out.println("There are " + bfsPaths.length + " bfs paths");
        
        UPI[] dfsPath = sna.depthFirstSearch("!ex:a", "!ex:h", "to", 0);
        AGUtils.printUPIArray("DFS path: ", ts, dfsPath);
        
        UPI[][] dfsPaths = sna.allDepthFirstSearchPaths("!ex:a", "!ex:h", "to", 0);
        System.out.println("There are " + dfsPaths.length + " dfs paths");

        UPI[] bdsPath = sna.bidirectionalSearch("!ex:a", "!ex:h", "to", 0);
        AGUtils.printUPIArray("BDS path: ", ts, bdsPath);
        
        UPI[][] bdsPaths = sna.allBidirectionalSearchPaths("!ex:a", "!ex:h", "to", 0);
        System.out.println("There are " + bdsPaths.length + " bds paths");

        // Close the store and disconnect from the server.
        ts.closeTripleStore();
        ags.disable();
    }

}

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