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

Example 56 with ConstraintDescriptor

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

the class SchemaReadWriteTestBase method shouldDropNodePropertyExistenceConstraint.

@Test
void shouldDropNodePropertyExistenceConstraint() throws Exception {
    ConstraintDescriptor constraint;
    try (KernelTransaction transaction = beginTransaction()) {
        constraint = transaction.schemaWrite().nodePropertyExistenceConstraintCreate(forLabel(label, prop1), "constraint name");
        transaction.commit();
    }
    try (KernelTransaction transaction = beginTransaction()) {
        transaction.schemaWrite().constraintDrop(constraint);
        transaction.commit();
    }
    try (KernelTransaction transaction = beginTransaction()) {
        SchemaRead schemaRead = transaction.schemaRead();
        assertFalse(schemaRead.constraintExists(constraint));
        assertThat(asList(schemaRead.constraintsGetForLabel(label))).isEmpty();
        assertThat(asList(schemaRead.snapshot().constraintsGetForLabel(label))).isEmpty();
    }
}

Example 57 with ConstraintDescriptor

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

the class SchemaReadWriteTestBase method shouldCreateUniquePropertyConstraint.

@Test
void shouldCreateUniquePropertyConstraint() throws Exception {
    ConstraintDescriptor constraint;
    try (KernelTransaction transaction = beginTransaction()) {
        constraint = transaction.schemaWrite().uniquePropertyConstraintCreate(uniqueForSchema(forLabel(label, prop1)));
        transaction.commit();
    }
    try (KernelTransaction transaction = beginTransaction()) {
        SchemaRead schemaRead = transaction.schemaRead();
        assertTrue(schemaRead.constraintExists(constraint));
        assertThat(asList(schemaRead.constraintsGetForLabel(label))).isEqualTo(singletonList(constraint));
        assertThat(asList(schemaRead.snapshot().constraintsGetForLabel(label))).isEqualTo(singletonList(constraint));
    }
}

Example 58 with ConstraintDescriptor

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

the class SchemaReadWriteTestBase method shouldListAllConstraintsInSnapshot.

@Test
void shouldListAllConstraintsInSnapshot() throws Exception {
    ConstraintDescriptor toRetain;
    ConstraintDescriptor toRetain2;
    ConstraintDescriptor toDrop;
    ConstraintDescriptor created;
    try (KernelTransaction tx = beginTransaction()) {
        toRetain = tx.schemaWrite().uniquePropertyConstraintCreate(uniqueForSchema(forLabel(label, prop1)).withName("first constraint"));
        toRetain2 = tx.schemaWrite().uniquePropertyConstraintCreate(uniqueForSchema(forLabel(label2, prop1)).withName("second constraint"));
        toDrop = tx.schemaWrite().uniquePropertyConstraintCreate(uniqueForSchema(forLabel(label, prop2)).withName("third constraint"));
        tx.commit();
    }
    try (KernelTransaction tx = beginTransaction()) {
        SchemaReadCore before = tx.schemaRead().snapshot();
        created = tx.schemaWrite().nodePropertyExistenceConstraintCreate(forLabel(label, prop1), "new constraint");
        tx.schemaWrite().constraintDrop(toDrop);
        Iterable<ConstraintDescriptor> allConstraints = () -> tx.schemaRead().snapshot().constraintsGetAll();
        assertThat(allConstraints).contains(toRetain, toRetain2, created);
        assertThat(before.constraintsGetAll()).toIterable().contains(toRetain, toRetain2, created);
        tx.commit();
    }
}

Example 59 with ConstraintDescriptor

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

the class GraphCountsSection method constraints.

private static List<Map<String, Object>> constraints(TokenRead tokens, SchemaRead schemaRead, Anonymizer anonymizer) {
    List<Map<String, Object>> constraints = new ArrayList<>();
    Iterator<ConstraintDescriptor> iterator = schemaRead.constraintsGetAll();
    while (iterator.hasNext()) {
        ConstraintDescriptor constraint = iterator.next();
        EntityType entityType = constraint.schema().entityType();
        Map<String, Object> data = new HashMap<>();
        data.put("properties", map(constraint.schema().getPropertyIds(), id -> anonymizer.propertyKey(tokens.propertyKeyGetName(id), id)));
        data.put("type", constraintType(constraint));
        int entityTokenId = constraint.schema().getEntityTokenIds()[0];
        switch(entityType) {
            case NODE:
                data.put("label", anonymizer.label(tokens.labelGetName(entityTokenId), entityTokenId));
                constraints.add(data);
                break;
            case RELATIONSHIP:
                data.put("relationshipType", anonymizer.relationshipType(tokens.relationshipTypeGetName(entityTokenId), entityTokenId));
                constraints.add(data);
                break;
            default:
        }
    }
    return constraints;
}

Example 60 with ConstraintDescriptor

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

the class SchemaImpl method asConstraintDefinitions.

private Iterable<ConstraintDefinition> asConstraintDefinitions(Iterator<? extends ConstraintDescriptor> constraints, TokenRead tokenRead) {
    // Intentionally create an eager list so that used statement can be closed
    List<ConstraintDefinition> definitions = new ArrayList<>();
    while (constraints.hasNext()) {
        ConstraintDescriptor constraint = constraints.next();
        definitions.add(asConstraintDefinition(constraint, tokenRead));
    }
    return definitions;
}