Examples with Relationship org.neo4j.graphdb.Relationship used on opensource projects

Example 6 with Relationship

use of org.neo4j.graphdb.Relationship in project neo4j-clean-remote-db-addon by jexp.

the class Neo4jDatabaseCleaner method removeNodes.

private void removeNodes(Map<String, Object> result, long maxNodesToDelete) {
    Node refNode = graph.getReferenceNode();
    long nodes = 0, relationships = 0;
    for (Node node : graph.getAllNodes()) {
        for (Relationship rel : node.getRelationships()) {
            rel.delete();
            relationships++;
        }
        if (!refNode.equals(node)) {
            node.delete();
            nodes++;
        }
        if (nodes >= maxNodesToDelete)
            break;
    }
    result.put("maxNodesToDelete", maxNodesToDelete);
    result.put("nodes", nodes);
    result.put("relationships", relationships);
}

Example 7 with Relationship

use of org.neo4j.graphdb.Relationship in project neo4j-clean-remote-db-addon by jexp.

the class DeleteDatabaseTest method createData.

private void createData(GraphDatabaseAPI db, int max) {
    Transaction tx = db.beginTx();
    try {
        final IndexManager indexManager = db.index();
        Node[] nodes = new Node[max];
        for (int i = 0; i < max; i++) {
            nodes[i] = db.createNode();
            final Index<Node> index = indexManager.forNodes("node_index_" + String.valueOf(i % 5));
            index.add(nodes[i], "ID", i);
        }
        Random random = new Random();
        for (int i = 0; i < max * 2; i++) {
            int from = random.nextInt(max);
            final int to = (from + 1 + random.nextInt(max - 1)) % max;
            final Relationship relationship = nodes[from].createRelationshipTo(nodes[to], DynamicRelationshipType.withName("TEST_" + i));
            final Index<Relationship> index = indexManager.forRelationships("rel_index_" + String.valueOf(i % 5));
            index.add(relationship, "ID", i);
        }
        tx.success();
    } finally {
        tx.finish();
    }
}

Example 8 with Relationship

use of org.neo4j.graphdb.Relationship in project neo4j by neo4j.

the class ImportToolTest method verifyData.

private void verifyData(Validator<Node> nodeAdditionalValidation, Validator<Relationship> relationshipAdditionalValidation) {
    GraphDatabaseService db = dbRule.getGraphDatabaseAPI();
    try (Transaction tx = db.beginTx()) {
        int nodeCount = 0, relationshipCount = 0;
        for (Node node : db.getAllNodes()) {
            assertTrue(node.hasProperty("name"));
            nodeAdditionalValidation.validate(node);
            nodeCount++;
        }
        assertEquals(NODE_COUNT, nodeCount);
        for (Relationship relationship : db.getAllRelationships()) {
            assertTrue(relationship.hasProperty("created"));
            relationshipAdditionalValidation.validate(relationship);
            relationshipCount++;
        }
        assertEquals(RELATIONSHIP_COUNT, relationshipCount);
        tx.success();
    }
}

Example 9 with Relationship

use of org.neo4j.graphdb.Relationship in project neo4j by neo4j.

the class TraversalBranchImpl method next.

@Override
public TraversalBranch next(PathExpander expander, TraversalContext context) {
    if (relationships == null) {
        expandRelationships(expander);
    }
    while (relationships.hasNext()) {
        Relationship relationship = relationships.next();
        if (relationship.equals(howIGotHere)) {
            context.unnecessaryRelationshipTraversed();
            continue;
        }
        expandedCount++;
        Node node = relationship.getOtherNode(source);
        // TODO maybe an unnecessary instantiation. Instead pass in this+node+relationship to uniqueness check
        TraversalBranch next = newNextBranch(node, relationship);
        if (context.isUnique(next)) {
            context.relationshipTraversed();
            next.initialize(expander, context);
            return next;
        } else {
            context.unnecessaryRelationshipTraversed();
        }
    }
    // Just to help GC
    relationships = PRUNED_ITERATOR;
    return null;
}

Example 10 with Relationship

use of org.neo4j.graphdb.Relationship in project neo4j by neo4j.

the class BigStoreIT method testHighIds.

private void testHighIds(long highMark, int minus, int requiredHeapMb) throws IOException {
    if (!machineIsOkToRunThisTest(requiredHeapMb)) {
        return;
    }
    long idBelow = highMark - minus;
    setHighIds(idBelow);
    String propertyKey = "name";
    int intPropertyValue = 123;
    String stringPropertyValue = "Long string, longer than would fit in shortstring";
    long[] arrayPropertyValue = new long[] { 1021L, 321L, 343212L };
    Transaction tx = db.beginTx();
    Node nodeBelowTheLine = db.createNode();
    nodeBelowTheLine.setProperty(propertyKey, intPropertyValue);
    assertEquals(idBelow, nodeBelowTheLine.getId());
    Node nodeAboveTheLine = db.createNode();
    nodeAboveTheLine.setProperty(propertyKey, stringPropertyValue);
    Relationship relBelowTheLine = nodeBelowTheLine.createRelationshipTo(nodeAboveTheLine, this);
    relBelowTheLine.setProperty(propertyKey, arrayPropertyValue);
    assertEquals(idBelow, relBelowTheLine.getId());
    Relationship relAboveTheLine = nodeAboveTheLine.createRelationshipTo(nodeBelowTheLine, this);
    assertEquals(highMark, relAboveTheLine.getId());
    assertEquals(highMark, nodeAboveTheLine.getId());
    assertEquals(intPropertyValue, nodeBelowTheLine.getProperty(propertyKey));
    assertEquals(stringPropertyValue, nodeAboveTheLine.getProperty(propertyKey));
    assertTrue(Arrays.equals(arrayPropertyValue, (long[]) relBelowTheLine.getProperty(propertyKey)));
    tx.success();
    tx.close();
    for (int i = 0; i < 2; i++) {
        try (Transaction transaction = db.beginTx()) {
            assertEquals(nodeAboveTheLine, db.getNodeById(highMark));
            assertEquals(idBelow, nodeBelowTheLine.getId());
            assertEquals(highMark, nodeAboveTheLine.getId());
            assertEquals(idBelow, relBelowTheLine.getId());
            assertEquals(highMark, relAboveTheLine.getId());
            assertEquals(relBelowTheLine, db.getNodeById(idBelow).getSingleRelationship(this, Direction.OUTGOING));
            assertEquals(relAboveTheLine, db.getNodeById(idBelow).getSingleRelationship(this, Direction.INCOMING));
            assertEquals(idBelow, relBelowTheLine.getId());
            assertEquals(highMark, relAboveTheLine.getId());
            assertEquals(asSet(asList(relBelowTheLine, relAboveTheLine)), asSet(Iterables.asCollection(db.getNodeById(idBelow).getRelationships())));
            transaction.success();
        }
        if (i == 0) {
            db = dbRule.restartDatabase();
        }
    }
}