Examples with MetaverseLink org.pentaho.dictionary.MetaverseLink used on opensource projects

Example 6 with MetaverseLink

use of org.pentaho.dictionary.MetaverseLink in project pentaho-metaverse by pentaho.

the class MetaverseBuilderTest method testAddLink_existingLink.

@Test
public void testAddLink_existingLink() throws Exception {
    // Retain current number of edges
    int originalEdgeCount = 0;
    for (Edge e : graph.getEdges()) {
        originalEdgeCount++;
    }
    MetaverseTransientNode node2 = new MetaverseTransientNode();
    node2.setStringID("nodeToId");
    node2.setName("to name");
    MetaverseLink link = new MetaverseLink(node, "uses", node2);
    builder.addLink(link);
    Vertex fromResult = graph.getVertex(node.getStringID());
    Vertex toResult = graph.getVertex(node2.getStringID());
    // make sure the edge exits before we try to add it again
    assertNotNull(graph.getEdge(builder.getEdgeId(fromResult, link.getLabel(), toResult)));
    // make sure we only added 1
    int count = 0;
    for (Edge e : graph.getEdges()) {
        count++;
    }
    assertEquals(originalEdgeCount + 1, count);
    // now lets add it again
    builder.addLink(link);
    // make sure we still only have one edge
    count = 0;
    for (Edge e : graph.getEdges()) {
        count++;
    }
    assertEquals(originalEdgeCount + 1, count);
}