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

Example 46 with ReadOperations

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

the class AbstractConstraintCreationIT method shouldNotPersistConstraintCreatedInAbortedTransaction.

@Test
public void shouldNotPersistConstraintCreatedInAbortedTransaction() throws Exception {
    // given
    SchemaWriteOperations schemaWriteOperations = schemaWriteOperationsInNewTransaction();
    createConstraint(schemaWriteOperations, descriptor);
    // when
    rollback();
    ReadOperations readOperations = readOperationsInNewTransaction();
    // then
    Iterator<?> constraints = readOperations.constraintsGetAll();
    assertFalse("should not have any constraints", constraints.hasNext());
}

Example 47 with ReadOperations

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

the class NodePropertyExistenceConstraintCreationIT method shouldNotDropPropertyExistenceConstraintThatDoesNotExistWhenThereIsAUniquePropertyConstraint.

@Test
public void shouldNotDropPropertyExistenceConstraintThatDoesNotExistWhenThereIsAUniquePropertyConstraint() throws Exception {
    // given
    UniquenessConstraintDescriptor constraint;
    {
        SchemaWriteOperations statement = schemaWriteOperationsInNewTransaction();
        constraint = statement.uniquePropertyConstraintCreate(descriptor);
        commit();
    }
    // when
    try {
        SchemaWriteOperations statement = schemaWriteOperationsInNewTransaction();
        statement.constraintDrop(ConstraintDescriptorFactory.existsForSchema(constraint.schema()));
        fail("expected exception");
    }// then
     catch (DropConstraintFailureException e) {
        assertThat(e.getCause(), instanceOf(NoSuchConstraintException.class));
    } finally {
        rollback();
    }
    // then
    {
        ReadOperations statement = readOperationsInNewTransaction();
        Iterator<ConstraintDescriptor> constraints = statement.constraintsGetForSchema(descriptor);
        assertEquals(constraint, single(constraints));
    }
}

Example 48 with ReadOperations

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

the class UniquenessConstraintCreationIT method shouldNotDropUniquePropertyConstraintThatDoesNotExistWhenThereIsAPropertyExistenceConstraint.

@Test
public void shouldNotDropUniquePropertyConstraintThatDoesNotExistWhenThereIsAPropertyExistenceConstraint() throws Exception {
    // given
    SchemaWriteOperations schemaWriteOperations = schemaWriteOperationsInNewTransaction();
    schemaWriteOperations.nodePropertyExistenceConstraintCreate(descriptor);
    commit();
    // when
    try {
        SchemaWriteOperations statement = schemaWriteOperationsInNewTransaction();
        statement.constraintDrop(ConstraintDescriptorFactory.uniqueForSchema(descriptor));
        fail("expected exception");
    }// then
     catch (DropConstraintFailureException e) {
        assertThat(e.getCause(), instanceOf(NoSuchConstraintException.class));
    } finally {
        rollback();
    }
    // then
    {
        ReadOperations statement = readOperationsInNewTransaction();
        Iterator<ConstraintDescriptor> constraints = statement.constraintsGetForSchema(descriptor);
        assertEquals(ConstraintDescriptorFactory.existsForSchema(descriptor), single(constraints));
    }
}

Example 49 with ReadOperations

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

the class UniquenessConstraintCreationIT method shouldDropConstraintIndexWhenDroppingConstraint.

@Test
public void shouldDropConstraintIndexWhenDroppingConstraint() throws Exception {
    // given
    Statement statement = statementInNewTransaction(SecurityContext.AUTH_DISABLED);
    UniquenessConstraintDescriptor constraint = statement.schemaWriteOperations().uniquePropertyConstraintCreate(descriptor);
    assertEquals(asSet(uniqueIndex), asSet(statement.readOperations().uniqueIndexesGetAll()));
    commit();
    // when
    SchemaWriteOperations schemaWriteOperations = schemaWriteOperationsInNewTransaction();
    schemaWriteOperations.constraintDrop(constraint);
    commit();
    // then
    ReadOperations readOperations = readOperationsInNewTransaction();
    assertEquals(emptySetOf(NewIndexDescriptor.class), asSet(readOperations.uniqueIndexesGetAll()));
    commit();
}

Example 50 with ReadOperations

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

the class AbstractConstraintCreationIT method shouldBeAbleToStoreAndRetrieveConstraint.

@Test
public void shouldBeAbleToStoreAndRetrieveConstraint() throws Exception {
    // given
    Statement statement = statementInNewTransaction(SecurityContext.AUTH_DISABLED);
    // when
    ConstraintDescriptor constraint = createConstraint(statement.schemaWriteOperations(), descriptor);
    // then
    assertEquals(constraint, single(statement.readOperations().constraintsGetAll()));
    // given
    commit();
    ReadOperations readOperations = readOperationsInNewTransaction();
    // when
    Iterator<?> constraints = readOperations.constraintsGetAll();
    // then
    assertEquals(constraint, single(constraints));
}