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

Example 11 with Schema

use of org.neo4j.graphdb.schema.Schema in project neo4j-apoc-procedures by neo4j-contrib.

the class NodesAndRelsSubGraph method getConstraints.

@Override
public Iterable<ConstraintDefinition> getConstraints() {
    Schema schema = db.schema();
    ArrayList<ConstraintDefinition> constraints = new ArrayList<>(labels.size() * 2);
    for (String label : labels) {
        Iterables.addAll(constraints, schema.getConstraints(Label.label(label)));
    }
    return constraints;
}

Example 12 with Schema

use of org.neo4j.graphdb.schema.Schema in project neo4j-apoc-procedures by neo4j-contrib.

the class Schemas method assertConstraints.

public List<AssertSchemaResult> assertConstraints(Map<String, List<String>> constraints0, boolean dropExisting) throws ExecutionException, InterruptedException {
    Map<String, List<String>> constraints = copy(constraints0);
    List<AssertSchemaResult> result = new ArrayList<>(constraints.size());
    Schema schema = db.schema();
    for (ConstraintDefinition definition : schema.getConstraints()) {
        if (!definition.isConstraintType(ConstraintType.UNIQUENESS))
            continue;
        String label = definition.getLabel().name();
        String key = Iterables.single(definition.getPropertyKeys());
        AssertSchemaResult info = new AssertSchemaResult(label, key).unique();
        if (!constraints.containsKey(label) || !constraints.get(label).remove(key)) {
            if (dropExisting) {
                definition.drop();
                info.dropped();
            }
        }
        result.add(info);
    }
    for (Map.Entry<String, List<String>> constraint : constraints.entrySet()) {
        for (String key : constraint.getValue()) {
            schema.constraintFor(label(constraint.getKey())).assertPropertyIsUnique(key).create();
            result.add(new AssertSchemaResult(constraint.getKey(), key).unique().created());
        }
    }
    return result;
}

Example 13 with Schema

use of org.neo4j.graphdb.schema.Schema in project neo4j-apoc-procedures by neo4j-contrib.

the class Schemas method assertIndexes.

public List<AssertSchemaResult> assertIndexes(Map<String, List<Object>> indexes0, boolean dropExisting) throws ExecutionException, InterruptedException, IllegalArgumentException {
    Schema schema = db.schema();
    Map<String, List<Object>> indexes = copyMapOfObjects(indexes0);
    List<AssertSchemaResult> result = new ArrayList<>(indexes.size());
    for (IndexDefinition definition : schema.getIndexes()) {
        if (definition.isConstraintIndex())
            continue;
        String label = definition.getLabel().name();
        List<String> keys = new ArrayList<>();
        definition.getPropertyKeys().forEach(keys::add);
        AssertSchemaResult info = new AssertSchemaResult(label, keys);
        if (indexes.containsKey(label)) {
            if (keys.size() > 1) {
                indexes.get(label).remove(keys);
            } else if (keys.size() == 1) {
                indexes.get(label).remove(keys.get(0));
            } else
                throw new IllegalArgumentException("Label given with no keys.");
        }
        if (dropExisting) {
            definition.drop();
            info.dropped();
        }
        result.add(info);
    }
    if (dropExisting)
        indexes = copyMapOfObjects(indexes0);
    for (Map.Entry<String, List<Object>> index : indexes.entrySet()) {
        for (Object key : index.getValue()) {
            if (key instanceof String) {
                result.add(createSinglePropertyIndex(schema, index.getKey(), (String) key));
            } else if (key instanceof List) {
                result.add(createCompoundIndex(index.getKey(), (List<String>) key));
            }
        }
    }
    return result;
}

Example 14 with Schema

use of org.neo4j.graphdb.schema.Schema in project neo4j-apoc-procedures by neo4j-contrib.

the class Schemas method indexesAndConstraintsForNode.

/**
 * Collects indexes and constraints for nodes
 *
 * @return
 */
private Stream<IndexConstraintNodeInfo> indexesAndConstraintsForNode() {
    Schema schema = db.schema();
    // Indexes
    Stream<IndexConstraintNodeInfo> indexes = StreamSupport.stream(schema.getIndexes().spliterator(), false).filter(indexDefinition -> !indexDefinition.isConstraintIndex()).map(indexDefinition -> this.nodeInfoFromIndexDefinition(indexDefinition, schema));
    // Constraints
    Stream<IndexConstraintNodeInfo> constraints = StreamSupport.stream(schema.getConstraints().spliterator(), false).filter(constraintDefinition -> !constraintDefinition.isConstraintType(ConstraintType.RELATIONSHIP_PROPERTY_EXISTENCE)).map(this::nodeInfoFromConstraintDefinition);
    return Stream.concat(indexes, constraints);
}

Example 15 with Schema

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

the class BatchInsertIndexTest method shouldThrowWhenPopulatingWithNonUniquePoints.

@ParameterizedTest
@EnumSource(SchemaIndex.class)
void shouldThrowWhenPopulatingWithNonUniquePoints(SchemaIndex schemaIndex) throws Exception {
    configure(schemaIndex);
    BatchInserter inserter = newBatchInserter();
    PointValue point = Values.pointValue(CoordinateReferenceSystem.WGS84, 0.0, 0.0);
    inserter.createNode(MapUtil.map("prop", point), LABEL_ONE);
    inserter.createNode(MapUtil.map("prop", point), LABEL_ONE);
    inserter.createDeferredConstraint(LABEL_ONE).assertPropertyIsUnique("prop").create();
    inserter.shutdown();
    GraphDatabaseService db = startGraphDatabaseService();
    try (Transaction tx = db.beginTx()) {
        assertThrows(IllegalStateException.class, () -> tx.schema().awaitIndexesOnline(10, TimeUnit.SECONDS));
    }
    try (Transaction tx = db.beginTx()) {
        var schema = tx.schema();
        Iterator<IndexDefinition> indexes = schema.getIndexes().iterator();
        assertTrue(indexes.hasNext());
        IndexDefinition index = indexes.next();
        Schema.IndexState indexState = schema.getIndexState(index);
        assertEquals(Schema.IndexState.FAILED, indexState);
        assertFalse(indexes.hasNext());
        tx.commit();
    }
}