Examples with ConstraintDefinition org.neo4j.graphdb.schema.ConstraintDefinition used on opensource projects

Example 31 with ConstraintDefinition

use of org.neo4j.graphdb.schema.ConstraintDefinition in project neo4j by neo4j.

the class Neo4jMatchers method createConstraint.

public static ConstraintDefinition createConstraint(GraphDatabaseService db, Label label, String propertyKey) {
    try (Transaction tx = db.beginTx()) {
        ConstraintDefinition constraint = db.schema().constraintFor(label).assertPropertyIsUnique(propertyKey).create();
        tx.success();
        return constraint;
    }
}

Example 32 with ConstraintDefinition

use of org.neo4j.graphdb.schema.ConstraintDefinition in project neo4j by neo4j.

the class BatchInsertTest method shouldCreateUniquenessConstraint.

@Test
public void shouldCreateUniquenessConstraint() throws Exception {
    // Given
    Label label = label("Person");
    String propertyKey = "name";
    String duplicatedValue = "Tom";
    BatchInserter inserter = newBatchInserter();
    // When
    inserter.createDeferredConstraint(label).assertPropertyIsUnique(propertyKey).create();
    // Then
    GraphDatabaseService db = switchToEmbeddedGraphDatabaseService(inserter);
    try {
        try (Transaction tx = db.beginTx()) {
            List<ConstraintDefinition> constraints = Iterables.asList(db.schema().getConstraints());
            assertEquals(1, constraints.size());
            ConstraintDefinition constraint = constraints.get(0);
            assertEquals(label.name(), constraint.getLabel().name());
            assertEquals(propertyKey, single(constraint.getPropertyKeys()));
            db.createNode(label).setProperty(propertyKey, duplicatedValue);
            tx.success();
        }
        try (Transaction tx = db.beginTx()) {
            db.createNode(label).setProperty(propertyKey, duplicatedValue);
            tx.success();
        }
        fail("Uniqueness property constraint was violated, exception expected");
    } catch (ConstraintViolationException e) {
        assertEquals(format("Node(0) already exists with label `%s` and property `%s` = '%s'", label.name(), propertyKey, duplicatedValue), e.getMessage());
    } finally {
        db.shutdown();
    }
}

Example 33 with ConstraintDefinition

use of org.neo4j.graphdb.schema.ConstraintDefinition in project neo4j by neo4j.

the class UniquenessRecoveryTest method shouldHaveUniquenessConstraintForNamePropertyOnPersonLabel.

// ASSERTIONS
private static void shouldHaveUniquenessConstraintForNamePropertyOnPersonLabel(GraphDatabaseService db) {
    try (Transaction tx = db.beginTx()) {
        ConstraintDefinition constraint = Iterables.single(db.schema().getConstraints());
        assertEquals(ConstraintType.UNIQUENESS, constraint.getConstraintType());
        assertEquals("Person", constraint.getLabel().name());
        assertEquals("name", Iterables.single(constraint.getPropertyKeys()));
        tx.success();
    }
}

Example 34 with ConstraintDefinition

use of org.neo4j.graphdb.schema.ConstraintDefinition in project neo4j by neo4j.

the class DatabaseActions method dropRelationshipPropertyExistenceConstraint.

public boolean dropRelationshipPropertyExistenceConstraint(String typeName, Iterable<String> propertyKeys) {
    final Set<String> propertyKeysSet = Iterables.asSet(propertyKeys);
    ConstraintDefinition constraint = Iterables.singleOrNull(filteredRelationshipConstraints(typeName, relationshipPropertyExistenceFilter(propertyKeysSet)));
    if (constraint != null) {
        constraint.drop();
    }
    return constraint != null;
}