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

Example 56 with Transaction

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

the class HaCountsIT method createAnIndex.

private NewIndexDescriptor createAnIndex(HighlyAvailableGraphDatabase db, Label label, String propertyName) throws KernelException {
    try (Transaction tx = db.beginTx()) {
        Statement statement = statement(db);
        int labelId = statement.tokenWriteOperations().labelGetOrCreateForName(label.name());
        int propertyKeyId = statement.tokenWriteOperations().propertyKeyGetOrCreateForName(propertyName);
        NewIndexDescriptor index = statement.schemaWriteOperations().indexCreate(SchemaDescriptorFactory.forLabel(labelId, propertyKeyId));
        tx.success();
        return index;
    }
}

Example 57 with Transaction

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

the class HaCountsIT method awaitOnline.

private long awaitOnline(HighlyAvailableGraphDatabase db, NewIndexDescriptor index) throws KernelException {
    long start = System.currentTimeMillis();
    long end = start + 3000;
    while (System.currentTimeMillis() < end) {
        try (Transaction tx = db.beginTx()) {
            switch(statement(db).readOperations().indexGetState(index)) {
                case ONLINE:
                    return indexingService(db).getIndexId(index.schema());
                case FAILED:
                    throw new IllegalStateException("Index failed instead of becoming ONLINE");
                default:
                    break;
            }
            tx.success();
            try {
                Thread.sleep(100);
            } catch (InterruptedException e) {
            // ignored
            }
        }
    }
    throw new IllegalStateException("Index did not become ONLINE within reasonable time");
}

Example 58 with Transaction

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

the class HaCountsIT method assertOnNodeCounts.

private void assertOnNodeCounts(int expectedTotalNodes, int expectedLabelledNodes, Label label, HighlyAvailableGraphDatabase db) {
    try (Transaction ignored = db.beginTx()) {
        final Statement statement = statement(db);
        final int labelId = statement.readOperations().labelGetForName(label.name());
        assertEquals(expectedTotalNodes, statement.readOperations().countsForNode(-1));
        assertEquals(expectedLabelledNodes, statement.readOperations().countsForNode(labelId));
    }
}

Example 59 with Transaction

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

the class HaCountsIT method createANode.

private void createANode(HighlyAvailableGraphDatabase db, Label label, String value, String property) {
    try (Transaction tx = db.beginTx()) {
        Node node = db.createNode(label);
        node.setProperty(property, value);
        tx.success();
    }
}

Example 60 with Transaction

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

the class TestBasicHaOperations method testBasicPropagationFromSlaveToMaster.

@Test
public void testBasicPropagationFromSlaveToMaster() throws Throwable {
    // given
    ManagedCluster cluster = clusterRule.startCluster();
    HighlyAvailableGraphDatabase master = cluster.getMaster();
    HighlyAvailableGraphDatabase slave = cluster.getAnySlave();
    long nodeId;
    // a node with a property
    try (Transaction tx = master.beginTx()) {
        Node node = master.createNode();
        nodeId = node.getId();
        node.setProperty("foo", "bar");
        tx.success();
    }
    cluster.sync();
    // the slave does a change
    try (Transaction tx = slave.beginTx()) {
        slave.getNodeById(nodeId).setProperty("foo", "bar2");
        tx.success();
    }
    // the master must pick up the change
    try (Transaction tx = master.beginTx()) {
        assertEquals("bar2", master.getNodeById(nodeId).getProperty("foo"));
        tx.success();
    }
}