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

Example 36 with Node

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

the class TestTransactionEvents method shouldBeAbleToTouchDataOutsideTxDataInAfterCommit.

@Test
public void shouldBeAbleToTouchDataOutsideTxDataInAfterCommit() throws Exception {
    // GIVEN
    final Node node = createNode("one", "Two", "three", "Four");
    dbRule.getGraphDatabaseAPI().registerTransactionEventHandler(new TransactionEventHandler.Adapter<Object>() {

        @Override
        public void afterCommit(TransactionData data, Object nothing) {
            try (Transaction tx = dbRule.beginTx()) {
                for (String key : node.getPropertyKeys()) {
                    // Just to see if one can reach them
                    node.getProperty(key);
                }
                tx.success();
            }
        }
    });
    try (Transaction tx = dbRule.beginTx()) {
        // WHEN/THEN
        dbRule.createNode();
        node.setProperty("five", "Six");
        tx.success();
    }
}

Example 37 with Node

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

the class TestTransactionEvents method modifiedPropertyCanByFurtherModifiedInBeforeCommit.

@Test
public void modifiedPropertyCanByFurtherModifiedInBeforeCommit() throws Exception {
    // Given
    // -- create node and set property on it in one transaction
    GraphDatabaseService db = dbRule.getGraphDatabaseAPI();
    final String key = "key";
    final Object value1 = "the old value";
    final Object value2 = "the new value";
    final Node node;
    try (Transaction tx = db.beginTx()) {
        node = db.createNode();
        node.setProperty(key, "initial value");
        tx.success();
    }
    // -- register a tx handler which will override a property
    TransactionEventHandler<Void> handler = new TransactionEventHandler.Adapter<Void>() {

        @Override
        public Void beforeCommit(TransactionData data) throws Exception {
            Node modifiedNode = data.assignedNodeProperties().iterator().next().entity();
            assertEquals(node, modifiedNode);
            modifiedNode.setProperty(key, value2);
            return null;
        }
    };
    db.registerTransactionEventHandler(handler);
    try (Transaction tx = db.beginTx()) {
        // When
        node.setProperty(key, value1);
        tx.success();
    }
    // Then
    assertThat(node, inTx(db, hasProperty(key).withValue(value2)));
    db.unregisterTransactionEventHandler(handler);
}

Example 38 with Node

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

the class TestTransactionEvents method shouldNotFireEventForReadOnlyTransaction.

@Test
public void shouldNotFireEventForReadOnlyTransaction() throws Exception {
    // GIVEN
    Node root = createTree(3, 3);
    dbRule.getGraphDatabaseAPI().registerTransactionEventHandler(new ExceptionThrowingEventHandler(new RuntimeException("Just failing")));
    // WHEN
    try (Transaction tx = dbRule.beginTx()) {
        count(dbRule.getGraphDatabaseAPI().traversalDescription().traverse(root));
        tx.success();
    }
}

Example 39 with Node

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

the class TestTransactionEvents method shouldAllowToStringOnCreatedRelationshipInAfterCommit.

@Test
public void shouldAllowToStringOnCreatedRelationshipInAfterCommit() throws Exception {
    // GIVEN
    Relationship relationship;
    Node startNode, endNode;
    RelationshipType type = MyRelTypes.TEST;
    try (Transaction tx = dbRule.beginTx()) {
        startNode = dbRule.createNode();
        endNode = dbRule.createNode();
        relationship = startNode.createRelationshipTo(endNode, type);
        tx.success();
    }
    // WHEN
    AtomicReference<String> deletedToString = new AtomicReference<>();
    dbRule.registerTransactionEventHandler(new TransactionEventHandler.Adapter<Object>() {

        @Override
        public void afterCommit(TransactionData data, Object state) {
            for (Relationship relationship : data.deletedRelationships()) {
                deletedToString.set(relationship.toString());
            }
        }
    });
    try (Transaction tx = dbRule.beginTx()) {
        relationship.delete();
        tx.success();
    }
    // THEN
    assertNotNull(deletedToString.get());
    assertThat(deletedToString.get(), containsString(type.name()));
    assertThat(deletedToString.get(), containsString(format("(%d)", startNode.getId())));
    assertThat(deletedToString.get(), containsString(format("(%d)", endNode.getId())));
}

Example 40 with Node

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

the class TestShortStringProperties method canUpdateShortStringInplace.

@Test
public void canUpdateShortStringInplace() throws Exception {
    try {
        long recordCount = dynamicRecordsInUse();
        long propCount = propertyRecordsInUse();
        Node node = graphdb.getGraphDatabaseAPI().createNode();
        node.setProperty("key", "value");
        newTx();
        assertEquals(recordCount, dynamicRecordsInUse());
        assertEquals(propCount + 1, propertyRecordsInUse());
        assertEquals("value", node.getProperty("key"));
        node.setProperty("key", "other");
        commit();
        assertEquals(recordCount, dynamicRecordsInUse());
        assertEquals(propCount + 1, propertyRecordsInUse());
        assertThat(node, inTx(graphdb.getGraphDatabaseAPI(), hasProperty("key").withValue("other")));
    } catch (Exception e) {
        e.printStackTrace();
        throw e;
    }
}