Netflix Graph Page - Java Big Data

Java examples for Big Data:Netflix Graph

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Description

Netflix Graph Page

Demo Code

package org.blackbananacoin.premature;

import static com.netflix.nfgraph.spec.NFPropertySpec.COMPACT;
import static com.netflix.nfgraph.spec.NFPropertySpec.HASH;
import static com.netflix.nfgraph.spec.NFPropertySpec.MULTIPLE;
import static com.netflix.nfgraph.spec.NFPropertySpec.SINGLE;

import com.netflix.nfgraph.OrdinalIterator;
import com.netflix.nfgraph.build.NFBuildGraph;
import com.netflix.nfgraph.compressed.NFCompressedGraph;
import com.netflix.nfgraph.spec.NFGraphSpec;
import com.netflix.nfgraph.spec.NFNodeSpec;
import com.netflix.nfgraph.spec.NFPropertySpec;
import com.netflix.nfgraph.util.OrdinalMap;

public class NetflixGraphPage {

    String nodePage = "Page";

    NFGraphSpec pageSchema = new NFGraphSpec(new NFNodeSpec(nodePage,
            new NFPropertySpec("link", nodePage, MULTIPLE | COMPACT)));

    OrdinalMap<String> pageOrdinals = new OrdinalMap<String>();

    public NFCompressedGraph initGraph() {
        NFBuildGraph buildGraph = new NFBuildGraph(pageSchema);

        int homeOrdinal = pageOrdinals.add("HOME");
        int aboutOrdinal = pageOrdinals.add("ABOUT");
        int companyOrdinal = pageOrdinals.add("COMPANY");
        int faqOrdinal = pageOrdinals.add("FAQ");

        buildGraph.addConnection(nodePage, homeOrdinal, "link",
                aboutOrdinal);/*from   w  w  w  . ja  v a2s .  c om*/
        buildGraph.addConnection(nodePage, homeOrdinal, "link",
                companyOrdinal);
        buildGraph
                .addConnection(nodePage, aboutOrdinal, "link", faqOrdinal);

        NFCompressedGraph compressedGraph = buildGraph.compress();
        return compressedGraph;
    }

    public void testGraph(NFCompressedGraph compressedGraph, String pageName) {
        int homeOrdinal = pageOrdinals.get(pageName);

        OrdinalIterator iter = compressedGraph.getConnectionIterator(
                nodePage, homeOrdinal, "link");

        int currentOrdinal = iter.nextOrdinal();

        while (currentOrdinal != OrdinalIterator.NO_MORE_ORDINALS) {
            System.out.println(pageOrdinals.get(currentOrdinal)
                    + " link in " + pageName);
            currentOrdinal = iter.nextOrdinal();
        }
    }

    public static void main(String[] args) {

        NetflixGraphPage app = new NetflixGraphPage();
        NFCompressedGraph g = app.initGraph();

        System.out.println(g.toString());
        app.testGraph(g, "HOME");
        app.testGraph(g, "ABOUT");

    }

}

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