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

Example 11 with SchemaWriteOperations

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

the class AbstractConstraintCreationIT method shouldNotCreateConstraintThatAlreadyExists.

@Test
public void shouldNotCreateConstraintThatAlreadyExists() throws Exception {
    // given
    {
        SchemaWriteOperations statement = schemaWriteOperationsInNewTransaction();
        createConstraint(statement, descriptor);
        commit();
    }
    // when
    try {
        SchemaWriteOperations statement = schemaWriteOperationsInNewTransaction();
        createConstraint(statement, descriptor);
        fail("Should not have validated");
    }// then
     catch (AlreadyConstrainedException e) {
    // good
    }
}

Example 12 with SchemaWriteOperations

use of org.neo4j.kernel.api.SchemaWriteOperations 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 13 with SchemaWriteOperations

use of org.neo4j.kernel.api.SchemaWriteOperations 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 14 with SchemaWriteOperations

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

the class UniquenessConstraintCreationIT method shouldAbortConstraintCreationWhenDuplicatesExist.

@Test
public void shouldAbortConstraintCreationWhenDuplicatesExist() throws Exception {
    // given
    Statement statement = statementInNewTransaction(AnonymousContext.writeToken());
    // name is not unique for Foo in the existing data
    int foo = statement.tokenWriteOperations().labelGetOrCreateForName("Foo");
    int name = statement.tokenWriteOperations().propertyKeyGetOrCreateForName("name");
    long node1 = statement.dataWriteOperations().nodeCreate();
    statement.dataWriteOperations().nodeAddLabel(node1, foo);
    statement.dataWriteOperations().nodeSetProperty(node1, Property.stringProperty(name, "foo"));
    long node2 = statement.dataWriteOperations().nodeCreate();
    statement.dataWriteOperations().nodeAddLabel(node2, foo);
    statement.dataWriteOperations().nodeSetProperty(node2, Property.stringProperty(name, "foo"));
    commit();
    // when
    LabelSchemaDescriptor descriptor = SchemaDescriptorFactory.forLabel(foo, name);
    try {
        SchemaWriteOperations schemaWriteOperations = schemaWriteOperationsInNewTransaction();
        schemaWriteOperations.uniquePropertyConstraintCreate(descriptor);
        fail("expected exception");
    }// then
     catch (CreateConstraintFailureException ex) {
        assertEquals(ConstraintDescriptorFactory.uniqueForSchema(descriptor), ex.constraint());
        Throwable cause = ex.getCause();
        assertThat(cause, instanceOf(ConstraintValidationException.class));
        String expectedMessage = String.format("Both Node(%d) and Node(%d) have the label `Foo` and property `name` = 'foo'", node1, node2);
        String actualMessage = userMessage((ConstraintValidationException) cause);
        assertEquals(expectedMessage, actualMessage);
    }
}

Example 15 with SchemaWriteOperations

use of org.neo4j.kernel.api.SchemaWriteOperations 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));
    }
}