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

Example 16 with ConstraintDefinition

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

the class IndexConstraintsTest method getConstraint.

private ConstraintDefinition getConstraint(Label label, String propertyKey) {
    try (Transaction tx = graphDb.beginTx()) {
        ConstraintDefinition found = null;
        for (ConstraintDefinition constraint : graphDb.schema().getConstraints(label)) {
            if (propertyKey.equals(single(constraint.getPropertyKeys()))) {
                assertNull("Found multiple constraints.", found);
                found = constraint;
            }
        }
        tx.success();
        return found;
    }
}

Example 17 with ConstraintDefinition

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

the class DatabaseActions method filteredRelationshipConstraints.

private Iterable<ConstraintDefinition> filteredRelationshipConstraints(String typeName, Predicate<ConstraintDefinition> filter) {
    RelationshipType type = RelationshipType.withName(typeName);
    Iterable<ConstraintDefinition> constraints = graphDb.schema().getConstraints(type);
    return filter(filter, constraints);
}

Example 18 with ConstraintDefinition

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

the class DatabaseActions method dropNodePropertyExistenceConstraint.

public boolean dropNodePropertyExistenceConstraint(String labelName, Iterable<String> propertyKeys) {
    final Set<String> propertyKeysSet = Iterables.asSet(propertyKeys);
    ConstraintDefinition constraint = Iterables.singleOrNull(filteredNodeConstraints(labelName, nodePropertyExistenceFilter(propertyKeysSet)));
    if (constraint != null) {
        constraint.drop();
    }
    return constraint != null;
}

Example 19 with ConstraintDefinition

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

the class DatabaseActions method dropPropertyUniquenessConstraint.

public boolean dropPropertyUniquenessConstraint(String labelName, Iterable<String> propertyKeys) {
    final Set<String> propertyKeysSet = Iterables.asSet(propertyKeys);
    ConstraintDefinition constraint = Iterables.singleOrNull(filteredNodeConstraints(labelName, propertyUniquenessFilter(propertyKeysSet)));
    if (constraint != null) {
        constraint.drop();
    }
    return constraint != null;
}

Example 20 with ConstraintDefinition

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

the class DatabaseActions method createPropertyUniquenessConstraint.

public ConstraintDefinitionRepresentation createPropertyUniquenessConstraint(String labelName, Iterable<String> propertyKeys) {
    ConstraintCreator constraintCreator = graphDb.schema().constraintFor(label(labelName));
    for (String key : propertyKeys) {
        constraintCreator = constraintCreator.assertPropertyIsUnique(key);
    }
    ConstraintDefinition constraintDefinition = constraintCreator.create();
    return new ConstraintDefinitionRepresentation(constraintDefinition);
}