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1
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1 package sample;
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2
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2
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3 import java.io.File;
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4 import java.io.FileInputStream;
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5 import java.io.FileNotFoundException;
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6 import java.io.FileOutputStream;
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7 import java.io.IOException;
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8
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1
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9 import com.tinkerpop.blueprints.Direction;
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10 import com.tinkerpop.blueprints.Edge;
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11 import com.tinkerpop.blueprints.Graph;
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12 import com.tinkerpop.blueprints.Vertex;
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13 import com.tinkerpop.blueprints.impls.tg.TinkerGraph;
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14 import com.tinkerpop.blueprints.impls.tg.TinkerGraphFactory;
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2
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15 import com.tinkerpop.blueprints.util.io.graphml.GraphMLReader;
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16 import com.tinkerpop.blueprints.util.io.graphml.GraphMLWriter;
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1
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17
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18 public class CreateTinkerGraph {
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19
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2
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20 public static final String filename = "./resources/tinkerpopDB";
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21
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22 public static void main(String[] args) {
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2
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23
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24
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25 try {
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26
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27 outputGraph();
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28 readGraph();
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29
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30 } catch (IOException e) {
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31 e.printStackTrace();
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32 }
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33
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1
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34 }
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35
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36 public static void outputGraph() throws IOException {
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37 Graph graph = new TinkerGraph();
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38 FileOutputStream out = new FileOutputStream(new File(filename));
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39
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40 Vertex a = graph.addVertex(null);
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41 Vertex b = graph.addVertex(null);
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42 Vertex c = graph.addVertex(null);
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43 Vertex d = graph.addVertex(null);
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44 a.setProperty("name", "maro");
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45 b.setProperty("name", "Peter");
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46 c.setProperty("name", "smith");
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47 d.setProperty("name", "black");
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48 Edge e = graph.addEdge(null, a, b, "knows");
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49 Edge e2 = graph.addEdge(null, c, a, "knows");
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50 Edge e3 = graph.addEdge(null, d, b, "knows");
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51 System.out.println(e.getVertex(Direction.OUT).getProperty("name")
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52 + "--" + e.getLabel() + "-->"
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53 + e.getVertex(Direction.IN).getProperty("name"));
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54 for (Edge edge : b.getEdges(Direction.IN, "knows")) {
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55 Vertex v =edge.getVertex(Direction.OUT);
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56 System.out.println(v.getProperty("name"));
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57 }
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58
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59
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60 GraphMLWriter.outputGraph(graph, out);
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61
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62 }
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63
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64 public static void readGraph() throws IOException {
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65 Graph graph = new TinkerGraph();
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66 FileInputStream in = new FileInputStream(new File(filename));
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67
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68 GraphMLReader.inputGraph(graph, in);
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69 Vertex aa = graph.getVertex("1");
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70 System.out.println("vertex " + aa.getId() + " has name " + aa.getProperty("name"));
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71 if (aa.getProperty("aaa") != null)
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72 System.out.println(aa.getProperty("aaa"));
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73 for(Edge ee : aa.getEdges(Direction.OUT)) {
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74 System.out.println(ee);
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75 }
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1
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76
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77 }
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78
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79
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80 }
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