Examples with Traverser org.neo4j.graphdb.traversal.Traverser used on opensource projects

Example 41 with Traverser

use of org.neo4j.graphdb.traversal.Traverser in project neo4j by neo4j.

the class TreeGraphTest method testPostorderBreadthFirstReturnsDeeperNodesFirst.

@Test
public void testPostorderBreadthFirstReturnsDeeperNodesFirst() {
    Traverser traverser = getGraphDb().traversalDescription().order(POSTORDER_BREADTH_FIRST).traverse(node("1"));
    Stack<Set<String>> levels = new Stack<>();
    levels.push(new HashSet<>(asList("1")));
    levels.push(new HashSet<>(asList("2", "3", "4")));
    levels.push(new HashSet<>(asList("5", "6", "7", "8", "9", "A", "B", "C", "D")));
    try (Transaction tx = beginTx()) {
        assertLevels(traverser, levels);
        tx.success();
    }
}

Example 42 with Traverser

use of org.neo4j.graphdb.traversal.Traverser in project neo4j by neo4j.

the class DepthPitfallGraphTest method testAllUniqueNodePathsAreReturned.

private void testAllUniqueNodePathsAreReturned(TraversalDescription description) throws Exception {
    Traverser traverser = description.uniqueness(Uniqueness.NODE_PATH).traverse(node("1"));
    expectPaths(traverser, NODE_UNIQUE_PATHS);
}

Example 43 with Traverser

use of org.neo4j.graphdb.traversal.Traverser in project neo4j by neo4j.

the class DepthPitfallGraphTest method testAllRelationshipsAreReturnedOnce.

private void testAllRelationshipsAreReturnedOnce(TraversalDescription description) throws Exception {
    Traverser traverser = getGraphDb().traversalDescription().uniqueness(Uniqueness.RELATIONSHIP_GLOBAL).traverse(node("1"));
    expectRelationships(traverser, THE_WORLD_AS_WE_KNOW_IT);
}

Example 44 with Traverser

use of org.neo4j.graphdb.traversal.Traverser in project neo4j by neo4j.

the class PagedTraverserTest method shouldPageThroughResultsForWhollyDivisiblePageSize.

@Test
public void shouldPageThroughResultsForWhollyDivisiblePageSize() {
    Traverser myTraverser = simpleListTraverser();
    PagedTraverser traversalPager = new PagedTraverser(myTraverser, LIST_LENGTH / 10);
    int iterations = iterateThroughPagedTraverser(traversalPager);
    assertEquals(10, iterations);
    assertNull(traversalPager.next());
}