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

Example 51 with IndexDescriptor

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

the class RecordStorageReaderSchemaTest method shouldListAllIndexes.

@Test
void shouldListAllIndexes() throws Exception {
    // Given
    IndexDescriptor firstExpectedIndex = createIndex(label1, propertyKey);
    IndexDescriptor secondExpectedIndex = createIndex(label2, propertyKey);
    // When
    Set<IndexDescriptor> indexes = asSet(storageReader.indexesGetAll());
    // Then
    Set<IndexDescriptor> expectedIndexes = asSet(firstExpectedIndex, secondExpectedIndex);
    assertEquals(expectedIndexes, indexes);
}

Example 52 with IndexDescriptor

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

the class RecordStorageReaderTestBase method createUniqueIndex.

private IndexDescriptor createUniqueIndex(Label label, String propertyKey) throws Exception {
    TxState txState = new TxState();
    int labelId = getOrCreateLabelId(label);
    int propertyKeyId = getOrCreatePropertyKeyId(propertyKey);
    long id = commitContext.reserveSchema();
    IndexDescriptor index = IndexPrototype.uniqueForSchema(forLabel(labelId, propertyKeyId)).withName("constraint_" + id).materialise(id);
    txState.indexDoAdd(index);
    apply(txState);
    return index;
}

Example 53 with IndexDescriptor

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

the class RecordStorageReaderTestBase method createIndex.

protected IndexDescriptor createIndex(Label label, String propertyKey) throws Exception {
    TxState txState = new TxState();
    int labelId = getOrCreateLabelId(label);
    int propertyKeyId = getOrCreatePropertyKeyId(propertyKey);
    long id = commitContext.reserveSchema();
    IndexPrototype prototype = IndexPrototype.forSchema(forLabel(labelId, propertyKeyId)).withName("index_" + id);
    IndexDescriptor index = prototype.materialise(id);
    txState.indexDoAdd(index);
    apply(txState);
    return index;
}

Example 54 with IndexDescriptor

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

the class IndexingService method filterOutAndHandleInjectedTokenIndex.

/**
 * Once upon a time there was something called label scan store.
 * In essence, it was a btree used for indexing nodes, but it was not managed like other indexes.
 * Most importantly, it did not have a record in the schema store.
 * In 4.3, the label scan store was turned into a proper index referred to as node label index
 * and got a corresponding record in a schema store.
 * However, during a rolling upgrade until the cluster is fully upgraded to a version >= 4.3,
 * a former label scan store behaves like a node label index, but does not have a record in schema store.
 * We call such node label index as "injected".
 * During an upgrade, a record in a schema store is created for the injected node label index.
 * The purpose of this code is to catch the event when a new index descriptor for the injected node label index
 * is submitted, filter it from the list of to-be-created indexes and swap the old descriptor on
 * the injected node label index with the newly submitted descriptor.
 * In other words, adding identity to an injected index is the only and very special case when
 * {@link #createIndexes} is called with a descriptor for an already existing index
 * and such operation needs to cause the index being linked to the new descriptor instead of
 * a new index being created and because we effectively "remove" the old injected index and replace
 * with the new we also need to clear the schema state.
 * Of course it would be much simpler to close the injected index and create a new one with the new identity.
 * The reason why the elaborate migration was introduced is not to interrupt any ongoing operations
 * against the index by keeping the file/accessor of the injected label index open.
 */
private IndexDescriptor[] filterOutAndHandleInjectedTokenIndex(IndexDescriptor[] rules) {
    IndexProxy nli = indexMapRef.indexMapSnapshot().getIndexProxy(IndexDescriptor.INJECTED_NLI_ID);
    if (nli == null) {
        return rules;
    }
    List<IndexDescriptor> filteredRules = new ArrayList<>();
    for (IndexDescriptor rule : rules) {
        if (rule.schema().isAnyTokenSchemaDescriptor() && rule.schema().entityType() == NODE) {
            nli.changeIdentity(rule);
            indexMapRef.modify(indexMap -> {
                indexMap.putIndexProxy(nli);
                indexMap.removeIndexProxy(IndexDescriptor.INJECTED_NLI_ID);
                return indexMap;
            });
            schemaState.clear();
        } else {
            filteredRules.add(rule);
        }
    }
    return filteredRules.toArray(IndexDescriptor[]::new);
}

Example 55 with IndexDescriptor

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

the class IndexingService method populateIndexesOfAllTypes.

private void populateIndexesOfAllTypes(MutableLongObjectMap<IndexDescriptor> rebuildingDescriptors, IndexMap indexMap) {
    Map<EntityType, MutableLongObjectMap<IndexDescriptor>> rebuildingDescriptorsByType = new EnumMap<>(EntityType.class);
    for (IndexDescriptor descriptor : rebuildingDescriptors) {
        rebuildingDescriptorsByType.computeIfAbsent(descriptor.schema().entityType(), type -> new LongObjectHashMap<>()).put(descriptor.getId(), descriptor);
    }
    for (Map.Entry<EntityType, MutableLongObjectMap<IndexDescriptor>> descriptorToPopulate : rebuildingDescriptorsByType.entrySet()) {
        IndexPopulationJob populationJob = newIndexPopulationJob(descriptorToPopulate.getKey(), false, SYSTEM);
        populate(descriptorToPopulate.getValue(), indexMap, populationJob);
    }
}