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

Example 31 with Label

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

the class ManyMergesStressTest method shouldWorkFine.

@Test
public void shouldWorkFine() throws Throwable {
    GraphDatabaseService db = dbRule.getGraphDatabaseAPI();
    GraphDatabaseQueryService graph = new GraphDatabaseCypherService(db);
    Label person = Label.label("Person");
    try (Transaction tx = db.beginTx()) {
        // THIS USED TO CAUSE OUT OF FILE HANDLES
        // (maybe look at:  http://stackoverflow.com/questions/6210348/too-many-open-files-error-on-lucene)
        db.schema().indexFor(person).on("id").create();
        // THIS SHOULD ALSO WORK
        db.schema().constraintFor(person).assertPropertyIsUnique("id").create();
        tx.success();
    }
    try (Transaction tx = db.beginTx()) {
        db.schema().indexFor(person).on("name").create();
        tx.success();
    }
    try (Transaction tx = db.beginTx()) {
        db.schema().awaitIndexesOnline(1, TimeUnit.MINUTES);
        tx.success();
    }
    for (int count = 0; count < TRIES; count++) {
        Pair<String, String> stringPair = getRandomName();
        String ident = stringPair.first();
        String name = stringPair.other();
        String id = Long.toString(Math.abs(random.nextLong()));
        String query = format("MERGE (%s:Person {id: %s}) ON CREATE SET %s.name = \"%s\";", ident, id, ident, name);
        try (InternalTransaction tx = graph.beginTransaction(KernelTransaction.Type.implicit, SecurityContext.AUTH_DISABLED)) {
            Result result = db.execute(query);
            result.close();
            tx.success();
        }
    }
}

Example 32 with Label

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

the class ExportTest method testExportConstraintsViaCypherResult.

@Test
public void testExportConstraintsViaCypherResult() throws Exception {
    final Label label = Label.label("Foo");
    gdb.schema().constraintFor(label).assertPropertyIsUnique("bar").create();
    gdb.schema().constraintFor(label).assertPropertyIsUnique("bar2").create();
    commitAndStartNewTransactionAfterSchemaChanges();
    Node n = gdb.createNode(label);
    final ExecutionResult result = result("node", n);
    final SubGraph graph = CypherResultSubGraph.from(result, gdb, true);
    assertEquals("create constraint on (n:`Foo`) assert n.`bar2` is unique;" + lineSeparator() + "create constraint on (n:`Foo`) assert n.`bar` is unique;" + lineSeparator() + "create (_0:`Foo`)" + lineSeparator() + ";" + lineSeparator(), doExportGraph(graph));
}

Example 33 with Label

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

the class ExportTest method testExportIndexesViaCypherResult.

@Test
public void testExportIndexesViaCypherResult() throws Exception {
    final Label label = Label.label("Foo");
    gdb.schema().indexFor(label).on("bar").create();
    gdb.schema().indexFor(label).on("bar2").create();
    commitAndStartNewTransactionAfterSchemaChanges();
    Node n = gdb.createNode(label);
    final ExecutionResult result = result("node", n);
    final SubGraph graph = CypherResultSubGraph.from(result, gdb, true);
    assertEquals("create index on :`Foo`(`bar2`);" + lineSeparator() + "create index on :`Foo`(`bar`);" + lineSeparator() + "create (_0:`Foo`)" + lineSeparator() + ";" + lineSeparator(), doExportGraph(graph));
}

Example 34 with Label

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

the class ImportToolTest method shouldSkipDuplicateNodesIfToldTo.

@Test
public void shouldSkipDuplicateNodesIfToldTo() throws Exception {
    // GIVEN
    List<String> nodeIds = asList("a", "b", "c", "d", "e", "f", "a", "g");
    Configuration config = Configuration.COMMAS;
    File nodeHeaderFile = nodeHeader(config);
    File nodeData1 = nodeData(false, config, nodeIds, lines(0, 4));
    File nodeData2 = nodeData(false, config, nodeIds, lines(4, nodeIds.size()));
    // WHEN
    importTool("--into", dbRule.getStoreDirAbsolutePath(), "--skip-duplicate-nodes", "--nodes", nodeHeaderFile.getAbsolutePath() + MULTI_FILE_DELIMITER + nodeData1.getAbsolutePath() + MULTI_FILE_DELIMITER + nodeData2.getAbsolutePath());
    // THEN
    GraphDatabaseService db = dbRule.getGraphDatabaseAPI();
    try (Transaction tx = db.beginTx()) {
        // there should not be duplicates of any node
        Iterator<Node> nodes = db.getAllNodes().iterator();
        Iterator<String> expectedIds = FilteringIterator.noDuplicates(nodeIds.iterator());
        while (expectedIds.hasNext()) {
            assertTrue(nodes.hasNext());
            assertEquals(expectedIds.next(), nodes.next().getProperty("id"));
        }
        assertFalse(nodes.hasNext());
        // also all nodes in the label index should exist
        for (int i = 0; i < MAX_LABEL_ID; i++) {
            Label label = Label.label(labelName(i));
            try (ResourceIterator<Node> nodesByLabel = db.findNodes(label)) {
                while (nodesByLabel.hasNext()) {
                    assertTrue(nodesByLabel.next().hasLabel(label));
                }
            }
        }
        tx.success();
    } finally {
        db.shutdown();
    }
}

Example 35 with Label

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

the class GraphDbStructureGuide method showRelCounts.

private void showRelCounts(ReadOperations read, DbStructureVisitor visitor) {
    // all wildcards
    noSide(read, visitor, WILDCARD_REL_TYPE, ANY_RELATIONSHIP_TYPE);
    // one label only
    for (Label label : db.getAllLabels()) {
        int labelId = read.labelGetForName(label.name());
        leftSide(read, visitor, label, labelId, WILDCARD_REL_TYPE, ANY_RELATIONSHIP_TYPE);
        rightSide(read, visitor, label, labelId, WILDCARD_REL_TYPE, ANY_RELATIONSHIP_TYPE);
    }
    // fixed rel type
    for (RelationshipType relType : db.getAllRelationshipTypes()) {
        int relTypeId = read.relationshipTypeGetForName(relType.name());
        noSide(read, visitor, relType, relTypeId);
        for (Label label : db.getAllLabels()) {
            int labelId = read.labelGetForName(label.name());
            // wildcard on right
            leftSide(read, visitor, label, labelId, relType, relTypeId);
            // wildcard on left
            rightSide(read, visitor, label, labelId, relType, relTypeId);
        }
    }
}