Examples with Statement org.neo4j.kernel.api.Statement used on opensource projects

Example 21 with Statement

use of org.neo4j.kernel.api.Statement in project neo4j by neo4j.

the class BuiltInProceduresIT method listAllLabels.

@Test
public void listAllLabels() throws Throwable {
    // Given
    Statement statement = statementInNewTransaction(AnonymousContext.writeToken());
    long nodeId = statement.dataWriteOperations().nodeCreate();
    int labelId = statement.tokenWriteOperations().labelGetOrCreateForName("MyLabel");
    statement.dataWriteOperations().nodeAddLabel(nodeId, labelId);
    commit();
    // When
    RawIterator<Object[], ProcedureException> stream = procedureCallOpsInNewTx().procedureCallRead(procedureName("db", "labels"), new Object[0]);
    // Then
    assertThat(asList(stream), contains(equalTo(new Object[] { "MyLabel" })));
}

Example 22 with Statement

use of org.neo4j.kernel.api.Statement in project neo4j by neo4j.

the class KernelIT method removingExistingLabelFromNodeShouldRespondTrue.

@Test
public void removingExistingLabelFromNodeShouldRespondTrue() throws Exception {
    // GIVEN
    Transaction tx = db.beginTx();
    Node node = db.createNode();
    Statement statement = statementContextSupplier.get();
    int labelId = statement.tokenWriteOperations().labelGetOrCreateForName("mylabel");
    statement.dataWriteOperations().nodeAddLabel(node.getId(), labelId);
    statement.close();
    tx.success();
    tx.close();
    // WHEN
    tx = db.beginTx();
    statement = statementContextSupplier.get();
    boolean removed = statement.dataWriteOperations().nodeRemoveLabel(node.getId(), labelId);
    // THEN
    assertTrue("Should have been removed now", removed);
    tx.close();
}

Example 23 with Statement

use of org.neo4j.kernel.api.Statement in project neo4j by neo4j.

the class LabelIT method shouldListAllLabels.

@Test
public void shouldListAllLabels() throws Exception {
    // given
    Statement statement = statementInNewTransaction(AnonymousContext.writeToken());
    int label1Id = statement.tokenWriteOperations().labelGetOrCreateForName("label1");
    int label2Id = statement.tokenWriteOperations().labelGetOrCreateForName("label2");
    // when
    Iterator<Token> labelIdsBeforeCommit = statement.readOperations().labelsGetAllTokens();
    // then
    assertThat(asCollection(labelIdsBeforeCommit), hasItems(new Token("label1", label1Id), new Token("label2", label2Id)));
    // when
    commit();
    ReadOperations readOperations = readOperationsInNewTransaction();
    Iterator<Token> labelIdsAfterCommit = readOperations.labelsGetAllTokens();
    // then
    assertThat(asCollection(labelIdsAfterCommit), hasItems(new Token("label1", label1Id), new Token("label2", label2Id)));
}

Example 24 with Statement

use of org.neo4j.kernel.api.Statement in project neo4j by neo4j.

the class PropertyIT method nodeHasNotPropertyIfUnset.

@Test
public void nodeHasNotPropertyIfUnset() throws Exception {
    // GIVEN
    Statement statement = statementInNewTransaction(AnonymousContext.writeToken());
    long nodeId = statement.dataWriteOperations().nodeCreate();
    // WHEN
    int propertyKeyId = statement.tokenWriteOperations().propertyKeyGetOrCreateForName("clown");
    // THEN
    assertThat(statement.readOperations().nodeHasProperty(nodeId, propertyKeyId), is(false));
    assertThat(statement.readOperations().nodeGetProperty(nodeId, propertyKeyId), nullValue());
    // WHEN
    commit();
    ReadOperations readOperations = readOperationsInNewTransaction();
    // THEN
    assertThat(readOperations.nodeHasProperty(nodeId, propertyKeyId), is(false));
    assertThat(readOperations.nodeGetProperty(nodeId, propertyKeyId), nullValue());
}

Example 25 with Statement

use of org.neo4j.kernel.api.Statement in project neo4j by neo4j.

the class PropertyIT method nodeHasPropertyIfSet.

@Test
public void nodeHasPropertyIfSet() throws Exception {
    // GIVEN
    Statement statement = statementInNewTransaction(AnonymousContext.writeToken());
    long nodeId = statement.dataWriteOperations().nodeCreate();
    // WHEN
    int propertyKeyId = statement.tokenWriteOperations().propertyKeyGetOrCreateForName("clown");
    statement.dataWriteOperations().nodeSetProperty(nodeId, stringProperty(propertyKeyId, "bozo"));
    // THEN
    assertThat(statement.readOperations().nodeHasProperty(nodeId, propertyKeyId), is(true));
    assertThat(statement.readOperations().nodeGetProperty(nodeId, propertyKeyId), notNullValue());
    // WHEN
    commit();
    ReadOperations readOperations = readOperationsInNewTransaction();
    // THEN
    assertThat(readOperations.nodeHasProperty(nodeId, propertyKeyId), is(true));
    assertThat(readOperations.nodeGetProperty(nodeId, propertyKeyId), notNullValue());
}