Examples of com.tinkerpop.blueprints.Graph.addVertex()

com.tinkerpop.blueprints.Graph.addVertex()
Create a new vertex, add it to the graph, and return the newly created vertex. The provided object identifier is a recommendation for the identifier to use. It is not required that the implementation use this identifier. @param id the recommended object identifier @return the newly created vertex

 */
public class IdGraphTest extends GraphTest {


    public void testElementClasses() throws Exception {
        Graph graph = this.generateGraph();
        Vertex v1 = graph.addVertex(null);
        Vertex v2 = graph.addVertex(null);
        Edge e = graph.addEdge(null, v1, v2, "knows");


        assertTrue(v1 instanceof IdVertex);
        assertTrue(e instanceof IdEdge);

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public class IdGraphTest extends GraphTest {


    public void testElementClasses() throws Exception {
        Graph graph = this.generateGraph();
        Vertex v1 = graph.addVertex(null);
        Vertex v2 = graph.addVertex(null);
        Edge e = graph.addEdge(null, v1, v2, "knows");


        assertTrue(v1 instanceof IdVertex);
        assertTrue(e instanceof IdEdge);

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        graph.shutdown();
    }


    public void testDefaultIdFactory() throws Exception {
        Graph graph = this.generateGraph();
        Vertex v = graph.addVertex(null);
        String id = (String) v.getId();


        assertEquals(36, id.length());
        assertEquals(5, id.split("-").length);

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        String id = (String) v.getId();


        assertEquals(36, id.length());
        assertEquals(5, id.split("-").length);


        Vertex v2 = graph.addVertex(null);
        Edge e = graph.addEdge(null, v, v2, "knows");


        id = (String) e.getId();
        assertEquals(36, id.length());
        assertEquals(5, id.split("-").length);

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    }




    public void testAddVertexWithSpecifiedId() throws Exception {
        Graph graph = this.generateGraph();
        Vertex v = graph.addVertex("forty-two");
        assertEquals("forty-two", v.getId());
        graph.shutdown();
    }


    public void testProperties() throws Exception {

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        assertTrue(graph.getVertices() instanceof ReadOnlyVertexIterable);
        assertTrue(graph.getEdges() instanceof ReadOnlyEdgeIterable);
        assertEquals(count(graph.getVertices()), 6);
        assertEquals(count(graph.getEdges()), 6);
        try {
            graph.addVertex(null);
            assertTrue(false);
        } catch (UnsupportedOperationException e) {
            assertTrue(true);
        }
        try {

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        graph.shutdown();
    }


    public void testProperties() throws Exception {
        Graph graph = this.generateGraph();
        Vertex v = graph.addVertex(null);
        v.setProperty("name", "Zaphod");
        v.setProperty("profession", "ex-president of the Galaxy");


        Set<String> keys = v.getPropertyKeys();
        assertEquals(2, keys.size());

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            else graph = bg;


            Vertex[] vertices = new Vertex[2];
            for (int i = 0; i < 2; i++) {
                vertices[i] = graph.getVertex(quad[i]);
                if (vertices[i] == null) vertices[i] = graph.addVertex(quad[i]);
            }
            Edge edge = graph.addEdge(null, vertices[0], vertices[1], quad[2]);
            edge.setProperty("annotation", quad[3]);
            counter++;
        }

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            else graph = bg;


            Vertex[] vertices = new Vertex[2];
            for (int i = 0; i < 2; i++) {
                vertices[i] = graph.getVertex(quad[i]);
                if (vertices[i] == null) vertices[i] = graph.addVertex(quad[i]);
            }
            Edge edge = graph.addEdge(null, vertices[0], vertices[1], quad[2]);
            edge.setProperty("annotation", quad[3]);
            counter++;
        }

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    // cause parse errors for GraphMLReader.
    // However, this happens uncommonly enough that is not yet known which characters those are.
    public void testEncoding() throws Exception {


        Graph g = new TinkerGraph();
        Vertex v = g.addVertex(1);
        v.setProperty("text", "\u00E9");


        GMLWriter w = new GMLWriter(g);


        File f = File.createTempFile("test", "txt");

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