Examples with ConnectorResolvedIndex io.prestosql.spi.connector.ConnectorResolvedIndex used on opensource projects

Example 1 with ConnectorResolvedIndex

use of io.prestosql.spi.connector.ConnectorResolvedIndex in project hetu-core by openlookeng.

the class ThriftMetadata method resolveIndex.

@Override
public Optional<ConnectorResolvedIndex> resolveIndex(ConnectorSession session, ConnectorTableHandle tableHandle, Set<ColumnHandle> indexableColumns, Set<ColumnHandle> outputColumns, TupleDomain<ColumnHandle> tupleDomain) {
    ThriftTableHandle table = (ThriftTableHandle) tableHandle;
    ThriftTableMetadata tableMetadata = getRequiredTableMetadata(new SchemaTableName(table.getSchemaName(), table.getTableName()));
    if (tableMetadata.containsIndexableColumns(indexableColumns)) {
        return Optional.of(new ConnectorResolvedIndex(new ThriftIndexHandle(tableMetadata.getSchemaTableName(), tupleDomain, session), tupleDomain));
    } else {
        return Optional.empty();
    }
}

Example 2 with ConnectorResolvedIndex

use of io.prestosql.spi.connector.ConnectorResolvedIndex in project hetu-core by openlookeng.

the class TpchIndexMetadata method resolveIndex.

@Override
public Optional<ConnectorResolvedIndex> resolveIndex(ConnectorSession session, ConnectorTableHandle tableHandle, Set<ColumnHandle> indexableColumns, Set<ColumnHandle> outputColumns, TupleDomain<ColumnHandle> tupleDomain) {
    TpchTableHandle tpchTableHandle = (TpchTableHandle) tableHandle;
    // Keep the fixed values that don't overlap with the indexableColumns
    // Note: technically we could more efficiently utilize the overlapped columns, but this way is simpler for now
    Map<ColumnHandle, NullableValue> fixedValues = TupleDomain.extractFixedValues(tupleDomain).orElse(ImmutableMap.of()).entrySet().stream().filter(entry -> !indexableColumns.contains(entry.getKey())).filter(// strip nulls since meaningless in index join lookups
    entry -> !entry.getValue().isNull()).collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
    // determine all columns available for index lookup
    Set<String> lookupColumnNames = ImmutableSet.<String>builder().addAll(handleToNames(ImmutableList.copyOf(indexableColumns))).addAll(handleToNames(ImmutableList.copyOf(fixedValues.keySet()))).build();
    // do we have an index?
    if (!indexedData.getIndexedTable(tpchTableHandle.getTableName(), tpchTableHandle.getScaleFactor(), lookupColumnNames).isPresent()) {
        return Optional.empty();
    }
    TupleDomain<ColumnHandle> filteredTupleDomain = tupleDomain;
    if (!tupleDomain.isNone()) {
        filteredTupleDomain = TupleDomain.withColumnDomains(Maps.filterKeys(tupleDomain.getDomains().get(), not(in(fixedValues.keySet()))));
    }
    TpchIndexHandle indexHandle = new TpchIndexHandle(tpchTableHandle.getTableName(), tpchTableHandle.getScaleFactor(), lookupColumnNames, TupleDomain.fromFixedValues(fixedValues));
    return Optional.of(new ConnectorResolvedIndex(indexHandle, filteredTupleDomain));
}

Example 3 with ConnectorResolvedIndex

use of io.prestosql.spi.connector.ConnectorResolvedIndex in project hetu-core by openlookeng.

the class MetadataManager method resolveIndex.

@Override
public Optional<ResolvedIndex> resolveIndex(Session session, TableHandle tableHandle, Set<ColumnHandle> indexableColumns, Set<ColumnHandle> outputColumns, TupleDomain<ColumnHandle> tupleDomain) {
    CatalogName catalogName = tableHandle.getCatalogName();
    CatalogMetadata catalogMetadata = getCatalogMetadata(session, catalogName);
    ConnectorMetadata metadata = catalogMetadata.getMetadataFor(catalogName);
    ConnectorTransactionHandle transaction = catalogMetadata.getTransactionHandleFor(catalogName);
    ConnectorSession connectorSession = session.toConnectorSession(catalogName);
    Optional<ConnectorResolvedIndex> resolvedIndex = metadata.resolveIndex(connectorSession, tableHandle.getConnectorHandle(), indexableColumns, outputColumns, tupleDomain);
    return resolvedIndex.map(resolved -> new ResolvedIndex(tableHandle.getCatalogName(), transaction, resolved));
}