CODE:

/*Copyright 2008-2010 GephiAuthors : Mathieu Bastian <mathieu.bastian@gephi.org>Website : http://www.gephi.orgThis file is part of Gephi.Gephi is free software: you can redistribute it and/or modifyit under the terms of the GNU Affero General Public License aspublished by the Free Software Foundation, either version 3 of theLicense, or (at your option) any later version.Gephi is distributed in the hope that it will be useful,but WITHOUT ANY WARRANTY; without even the implied warranty ofMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See theGNU Affero General Public License for more details.You should have received a copy of the GNU Affero General Public Licensealong with Gephi.  If not, see <http://www.gnu.org/licenses/>. */package org.gephi.toolkit.demos;import com.csvreader.CsvReader;import java.awt.BorderLayout;import java.awt.Color;import java.awt.event.ComponentAdapter;import java.awt.event.ComponentEvent;import java.io.File;import java.io.FileNotFoundException;import java.io.IOException;import javax.swing.JFrame;import org.gephi.datalab.api.datatables.DataTablesController;import org.gephi.graph.api.Column;import org.gephi.graph.api.DirectedGraph;import org.gephi.graph.api.Edge;import org.gephi.graph.api.GraphController;import org.gephi.graph.api.GraphModel;import org.gephi.graph.api.Node;import org.gephi.io.importer.api.Container;import org.gephi.io.importer.api.ImportController;import org.gephi.io.processor.plugin.DefaultProcessor;import org.gephi.preview.api.*;import org.gephi.preview.types.DependantOriginalColor;import org.gephi.project.api.ProjectController;import org.gephi.project.api.Workspace;import org.gephi.toolkit.demos.plugins.preview.PreviewSketch;import org.openide.util.Lookup;/** * * @author Mathieu Bastian */public class PreviewJFrame {    public void script() {               //Init a project - and therefore a workspace        ProjectController pc = Lookup.getDefault().lookup(ProjectController.class);        pc.newProject();        Workspace workspace = pc.getCurrentWorkspace();        //Get a graph model - it exists because we have a workspace        GraphModel graphModel = Lookup.getDefault().lookup(GraphController.class).getGraphModel(workspace);        Column tag = graphModel.getNodeTable().addColumn("tag",String.class);        Column address = graphModel.getNodeTable().addColumn("address",String.class);        Column branch  = graphModel.getNodeTable().addColumn("branch",String.class);        Column trunk = graphModel.getNodeTable().addColumn("trunk",String.class);        Column bundle = graphModel.getNodeTable().addColumn("bundle",String.class);        Column currentIndex = graphModel.getNodeTable().addColumn("currentIndex",Integer.class);        Column lastIndex = graphModel.getNodeTable().addColumn("lastIndex",Integer.class);        Column value = graphModel.getNodeTable().addColumn("value",Long.class);        Column timestamp = graphModel.getNodeTable().addColumn("timestamp",Long.class);                        String filename = "/Users/cecilia/Documents/iota/data/from0407.csv";        int i = 0;        DirectedGraph directedGraph = graphModel.getDirectedGraph();        try{            CsvReader records = new CsvReader(filename);                                 records.readHeaders();            while(records.readRecord() && i<40)            {                System.out.println(i);                String hash = records.get("hash");                Node n = graphModel.factory().newNode(hash);                n.setLabel(hash);                                String edge1 = records.get("branch");                //System.out.println(edge1);                String edge2 = records.get("trunk");                                Node n1 = graphModel.factory().newNode(edge1);                n1.setLabel(edge1);                Node n2 = graphModel.factory().newNode(edge2);                n2.setLabel(edge2);                i++;                                if(directedGraph.getNode(n.getId()) == null)                {                    directedGraph.addNode(n);                    n.setAttribute(address,records.get("address"));                    n.setAttribute(tag,records.get("tag"));                    n.setAttribute(bundle, records.get("bundle"));                    n.setAttribute(branch, records.get("branch"));                    n.setAttribute(trunk, records.get("trunk"));                    n.setAttribute(currentIndex, Integer.parseInt(records.get("currentIndex")));                    n.setAttribute(lastIndex, Integer.parseInt(records.get("lastIndex")));                    n.setAttribute(timestamp, Long.parseLong(records.get("timestamp")));                    n.setAttribute(value, Long.parseLong(records.get("value")));                }                else                {                    n = directedGraph.getNode(n.getId());                }                System.out.println(directedGraph.getNode(hash).getLabel());                System.out.println(directedGraph.getNode(hash).getAttribute(trunk));                if(directedGraph.getNode(n1.getId()) == null)                {                    directedGraph.addNode(n1);                    //System.out.println("b");                }                else                {                    n1 = directedGraph.getNode(n1.getId());                }                if(directedGraph.getNode(n2.getId()) == null)                {                    directedGraph.addNode(n2);                    //System.out.println("c");                }                else                {                    n2 = directedGraph.getNode(n2.getId());                }                if(directedGraph.getEdge(n,n1)== null)                {                       Edge e1 = graphModel.factory().newEdge(n, n1, true);                    directedGraph.addEdge(e1);                    //System.out.println("33");                }                                if(directedGraph.getEdge(n,n2) == null)                {                    Edge e2 = graphModel.factory().newEdge(n, n2, true);                    directedGraph.addEdge(e2);                }            }            records.close();        }catch (FileNotFoundException e) {            System.out.println(e.toString());        } catch (IOException e) {            System.out.println(e.toString());        }                        System.out.println("Nodes: " + graphModel.getGraph().getNodeCount() + " Edges: " + graphModel.getGraph().getEdgeCount());             PreviewController previewController = Lookup.getDefault().lookup(PreviewController.class);        PreviewModel previewModel = previewController.getModel();        previewModel.getProperties().putValue(PreviewProperty.SHOW_NODE_LABELS, Boolean.TRUE);        previewModel.getProperties().putValue(PreviewProperty.DIRECTED, Boolean.TRUE);        previewModel.getProperties().putValue(PreviewProperty.NODE_LABEL_COLOR, new DependantOriginalColor(Color.WHITE));        previewModel.getProperties().putValue(PreviewProperty.EDGE_CURVED, Boolean.FALSE);        previewModel.getProperties().putValue(PreviewProperty.EDGE_OPACITY, 50);        previewModel.getProperties().putValue(PreviewProperty.BACKGROUND_COLOR, Color.BLACK);        //New Processing target, get the PApplet        G2DTarget target = (G2DTarget) previewController.getRenderTarget(RenderTarget.G2D_TARGET);        final PreviewSketch previewSketch = new PreviewSketch(target);        previewController.refreshPreview();        //Add the applet to a JFrame and display        JFrame frame = new JFrame("Test Preview");        frame.setLayout(new BorderLayout());        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);        frame.add(previewSketch, BorderLayout.CENTER);        frame.setSize(1024, 768);                //Wait for the frame to be visible before painting, or the result drawing will be strange        frame.addComponentListener(new ComponentAdapter() {            @Override            public void componentShown(ComponentEvent e) {                previewSketch.resetZoom();            }        });        frame.setVisible(true);    }    public static void main(String[] args) {        PreviewJFrame previewJFrame = new PreviewJFrame();        previewJFrame.script();                System.out.println("finished");    }}