AGTemporalIntervalIntervalRelations.java

package com.franz.ag.examples;

import com.franz.ag.*;


public class AGTemporalIntervalIntervalRelations {

    /**
     * Demonstrates temporal queries involving Allen relations between intervals.
     * 
     * @param 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("temporal", AGPaths.TRIPLE_STORES);

        // Add a datatype mapping so that XMLSchema#dateTime typed literals are 
        // loaded as date-time UPI's, enabling more efficient storage and range 
        // querying over dates.
        String[] map = new String[3];
        map[0] = "http://www.w3.org/2000/01/XMLSchema#dateTime";
        map[1] = "date-time";
        map[2] = "datatype";
        ts.addDataMapping(map);
        
        // Load some temporal data
        AGLoadNtriples.loadNTriplesWithTiming(ts, AGPaths.dataSources("temporal.nt"));

        // Index the store for faster querying
        AGIndexAllTriples.indexAllTriplesWithTiming(ts);
        
        // Register any namespaces
        ts.registerNamespace("ex", "http://example.org/");
        ts.registerNamespace("t", "http://franz.com/ns/allegrograph/3.0/temporal/");

        Cursor cc = ts.getStatements(null, null, null);
        AGUtils.showTriples(cc);
        
        // Query the store for intervals satisfying interval-before
        String pquery = "(?i)" 
            + "(interval-before ?i !ex:i68)";
        AGPrologSelect.doPrologSelectDistinct(ts, pquery);
        
        // Query the store for intervals satisfying interval-meets
        pquery = "(?i)" 
            + "(interval-meets ?i !ex:i68)";
        AGPrologSelect.doPrologSelectDistinct(ts, pquery);
        
        // Query the store for intervals satisfying interval-overlaps
        pquery = "(?i)" 
            + "(interval-overlaps ?i !ex:i38)";
        AGPrologSelect.doPrologSelectDistinct(ts, pquery);
        
        // Query the store for intervals satisfying interval-starts
        pquery = "(?i)" 
            + "(interval-starts ?i !ex:i16)";
        AGPrologSelect.doPrologSelectDistinct(ts, pquery);
        
        // Query the store for intervals satisfying interval-during
        pquery = "(?i)" 
            + "(interval-during ?i !ex:i27)";
        AGPrologSelect.doPrologSelectDistinct(ts, pquery);
        
        // Query the store for intervals satisfying interval-finishes
        pquery = "(?i)" 
            + "(interval-finishes ?i !ex:i38)";
        AGPrologSelect.doPrologSelectDistinct(ts, pquery);
        
        // Query the store for intervals satisfying interval-cotemporal
        pquery = "(?i)" 
            + "(interval-cotemporal ?i !ex:i36)";
        AGPrologSelect.doPrologSelectDistinct(ts, pquery);
        
        // Query the store for intervals satisfying interval-after
        pquery = "(?i)" 
            + "(interval-after ?i !ex:i45)";
        AGPrologSelect.doPrologSelectDistinct(ts, pquery);
        
        // Query the store for intervals satisfying interval-met-by
        pquery = "(?i)" 
            + "(interval-met-by ?i !ex:i14)";
        AGPrologSelect.doPrologSelectDistinct(ts, pquery);
        
        // Query the store for intervals satisfying interval-overlapped-by
        pquery = "(?i)" 
            + "(interval-overlapped-by ?i !ex:i36)";
        AGPrologSelect.doPrologSelectDistinct(ts, pquery);
        
        // Query the store for intervals satisfying interval-started-by
        pquery = "(?i)" 
            + "(interval-started-by ?i !ex:i14)";
        AGPrologSelect.doPrologSelectDistinct(ts, pquery);
        
        // Query the store for intervals satisfying interval-contains
        pquery = "(?i)" 
            + "(interval-contains ?i !ex:i36)";
        AGPrologSelect.doPrologSelectDistinct(ts, pquery);
        
        // Query the store for intervals satisfying interval-finished-by
        pquery = "(?i)" 
            + "(interval-finished-by ?i !ex:i48)";
        AGPrologSelect.doPrologSelectDistinct(ts, pquery);
        
        // Close the triple store and disconnect from the server.
        ts.closeTripleStore();
        ags.disable();
    }

}

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