Examples with ConstraintDescriptor org.neo4j.internal.schema.ConstraintDescriptor used on opensource projects

Example 31 with ConstraintDescriptor

use of org.neo4j.internal.schema.ConstraintDescriptor in project neo4j by neo4j.

the class SchemaStore method buildConstraintRule.

private static SchemaRule buildConstraintRule(long id, Map<String, Value> props) throws MalformedSchemaRuleException {
    SchemaDescriptor schema = buildSchemaDescriptor(props);
    String constraintRuleType = getString(PROP_CONSTRAINT_RULE_TYPE, props);
    String name = getString(PROP_SCHEMA_RULE_NAME, props);
    OptionalLong ownedIndex = getOptionalLong(PROP_OWNED_INDEX, props);
    ConstraintDescriptor constraint;
    switch(constraintRuleType) {
        case "UNIQUE":
            constraint = ConstraintDescriptorFactory.uniqueForSchema(schema);
            if (ownedIndex.isPresent()) {
                constraint = constraint.withOwnedIndexId(ownedIndex.getAsLong());
            }
            return constraint.withId(id).withName(name);
        case "EXISTS":
            constraint = ConstraintDescriptorFactory.existsForSchema(schema);
            return constraint.withId(id).withName(name);
        case "UNIQUE_EXISTS":
            constraint = ConstraintDescriptorFactory.nodeKeyForSchema(schema);
            if (ownedIndex.isPresent()) {
                constraint = constraint.withOwnedIndexId(ownedIndex.getAsLong());
            }
            return constraint.withId(id).withName(name);
        default:
            throw new MalformedSchemaRuleException("Did not recognize constraint rule type: " + constraintRuleType);
    }
}

Example 32 with ConstraintDescriptor

use of org.neo4j.internal.schema.ConstraintDescriptor in project neo4j by neo4j.

the class GraphDbStructureGuide method showUniqueConstraints.

private static void showUniqueConstraints(DbStructureVisitor visitor, KernelTransaction ktx, TokenNameLookup nameLookup) {
    Iterator<ConstraintDescriptor> constraints = ktx.schemaRead().constraintsGetAll();
    while (constraints.hasNext()) {
        ConstraintDescriptor constraint = constraints.next();
        String userDescription = constraint.userDescription(nameLookup);
        if (constraint.isUniquenessConstraint()) {
            visitor.visitUniqueConstraint(constraint.asUniquenessConstraint(), userDescription);
        } else if (constraint.isNodePropertyExistenceConstraint()) {
            NodeExistenceConstraintDescriptor existenceConstraint = constraint.asNodePropertyExistenceConstraint();
            visitor.visitNodePropertyExistenceConstraint(existenceConstraint, userDescription);
        } else if (constraint.isRelationshipPropertyExistenceConstraint()) {
            RelExistenceConstraintDescriptor existenceConstraint = constraint.asRelationshipPropertyExistenceConstraint();
            visitor.visitRelationshipPropertyExistenceConstraint(existenceConstraint, userDescription);
        } else if (constraint.isNodeKeyConstraint()) {
            NodeKeyConstraintDescriptor nodeKeyConstraint = constraint.asNodeKeyConstraint();
            visitor.visitNodeKeyConstraint(nodeKeyConstraint, userDescription);
        } else {
            throw new IllegalArgumentException("Unknown constraint type: " + constraint.getClass() + ", " + "constraint: " + constraint);
        }
    }
}

Example 33 with ConstraintDescriptor

use of org.neo4j.internal.schema.ConstraintDescriptor in project neo4j by neo4j.

the class SchemaCacheTest method shouldRemoveNodeConstraints.

@Test
void shouldRemoveNodeConstraints() {
    // given
    SchemaCache cache = new SchemaCache(new ConstraintSemantics(), indexConfigCompleter);
    ConstraintDescriptor constraint1 = ConstraintDescriptorFactory.uniqueForLabel(1, 5, 6).withId(1);
    ConstraintDescriptor constraint2 = ConstraintDescriptorFactory.uniqueForLabel(1, 5).withId(2);
    ConstraintDescriptor constraint3 = ConstraintDescriptorFactory.uniqueForLabel(2, 5).withId(3);
    cache.addSchemaRule(constraint1);
    cache.addSchemaRule(constraint2);
    cache.addSchemaRule(constraint3);
    assertEquals(asSet(constraint2), cache.getUniquenessConstraintsRelatedTo(entityTokens(1), entityTokens(), properties(5), true, NODE));
    // and when
    cache.removeSchemaRule(constraint1.getId());
    cache.removeSchemaRule(constraint2.getId());
    cache.removeSchemaRule(constraint3.getId());
    // then
    assertTrue(cache.getUniquenessConstraintsRelatedTo(entityTokens(1), entityTokens(), properties(5), true, NODE).isEmpty());
}

Example 34 with ConstraintDescriptor

use of org.neo4j.internal.schema.ConstraintDescriptor in project neo4j by neo4j.

the class SchemaCacheTest method hasConstraintRuleShouldMatchBySchemaAndType.

@Test
void hasConstraintRuleShouldMatchBySchemaAndType() {
    ConstraintDescriptor existing = uniquenessConstraint(1, 2, 3, 4);
    // Different rule id, but same type and schema.
    ConstraintDescriptor checked = uniquenessConstraint(0, 2, 3, 4);
    SchemaCache cache = newSchemaCache(existing);
    assertTrue(cache.hasConstraintRule(checked));
}

Example 35 with ConstraintDescriptor

use of org.neo4j.internal.schema.ConstraintDescriptor in project neo4j by neo4j.

the class SchemaCacheTest method shouldListConstraintsForSchema.

@Test
void shouldListConstraintsForSchema() {
    // Given
    ConstraintDescriptor rule1 = uniquenessConstraint(0, 1, 1, 0);
    ConstraintDescriptor rule2 = uniquenessConstraint(1, 2, 1, 0);
    ConstraintDescriptor rule3 = nodePropertyExistenceConstraint(2, 1, 2);
    SchemaCache cache = newSchemaCache();
    cache.addSchemaRule(rule1);
    cache.addSchemaRule(rule2);
    cache.addSchemaRule(rule3);
    // When
    Set<ConstraintDescriptor> listed = asSet(cache.constraintsForSchema(rule3.schema()));
    // Then
    assertEquals(singleton(rule3), listed);
}