Uses of Interface
org.apache.druid.query.groupby.epinephelinae.Grouper

Packages that use Grouper

Package	Description
org.apache.druid.query.groupby.epinephelinae

Uses of Grouper in org.apache.druid.query.groupby.epinephelinae

Subinterfaces of Grouper in org.apache.druid.query.groupby.epinephelinae

Modifier and Type	Interface and Description
interface	IntGrouper Grouper specialized for the primitive int type

Classes in org.apache.druid.query.groupby.epinephelinae that implement Grouper

Modifier and Type	Class and Description
class	AbstractBufferHashGrouper<KeyType>
class	BufferArrayGrouper A buffer grouper for array-based aggregation.
class	BufferHashGrouper<KeyType>
class	ConcurrentGrouper<KeyType> Grouper based around a set of underlying SpillingGrouper instances.
class	LimitedBufferHashGrouper<KeyType>
class	SpillingGrouper<KeyType> Grouper based around a single underlying BufferHashGrouper.
class	StreamingMergeSortedGrouper<KeyType> A streaming grouper which can aggregate sorted inputs.

Methods in org.apache.druid.query.groupby.epinephelinae that return types with arguments of type Grouper

Modifier and Type	Method and Description
static Pair<Grouper<RowBasedGrouperHelper.RowBasedKey>,Accumulator<AggregateResult,ResultRow>>	RowBasedGrouperHelper.createGrouperAccumulatorPair(GroupByQuery query, GroupByQuery subquery, GroupByQueryConfig config, com.google.common.base.Supplier<ByteBuffer> bufferSupplier, LimitedTemporaryStorage temporaryStorage, com.fasterxml.jackson.databind.ObjectMapper spillMapper, int mergeBufferSize) Create a single-threaded grouper and accumulator.
static Pair<Grouper<RowBasedGrouperHelper.RowBasedKey>,Accumulator<AggregateResult,ResultRow>>	RowBasedGrouperHelper.createGrouperAccumulatorPair(GroupByQuery query, GroupByQuery subquery, GroupByQueryConfig config, com.google.common.base.Supplier<ByteBuffer> bufferSupplier, ReferenceCountingResourceHolder<ByteBuffer> combineBufferHolder, int concurrencyHint, LimitedTemporaryStorage temporaryStorage, com.fasterxml.jackson.databind.ObjectMapper spillMapper, com.google.common.util.concurrent.ListeningExecutorService grouperSorter, int priority, boolean hasQueryTimeout, long queryTimeoutAt, int mergeBufferSize) Create a Grouper that groups according to the dimensions and aggregators in "query", along with an Accumulator that accepts ResultRows and forwards them to the grouper.

Methods in org.apache.druid.query.groupby.epinephelinae with parameters of type Grouper

Modifier and Type	Method and Description
static CloseableGrouperIterator<RowBasedGrouperHelper.RowBasedKey,ResultRow>	RowBasedGrouperHelper.makeGrouperIterator(Grouper<RowBasedGrouperHelper.RowBasedKey> grouper, GroupByQuery query, Closeable closeable)
static CloseableGrouperIterator<RowBasedGrouperHelper.RowBasedKey,ResultRow>	RowBasedGrouperHelper.makeGrouperIterator(Grouper<RowBasedGrouperHelper.RowBasedKey> grouper, GroupByQuery query, List<String> dimsToInclude, Closeable closeable)