Uses of Class
org.apache.druid.frame.key.KeyColumn

Packages that use KeyColumn

Package	Description
org.apache.druid.frame.key
org.apache.druid.frame.read
org.apache.druid.frame.write
org.apache.druid.frame.write.columnar

Uses of KeyColumn in org.apache.druid.frame.key

Methods in org.apache.druid.frame.key that return KeyColumn

Modifier and Type	Method	Description
static KeyColumn	KeyColumn.fromOrderByColumnSpec(OrderByColumnSpec orderByColumnSpec)

Methods in org.apache.druid.frame.key that return types with arguments of type KeyColumn

Modifier and Type	Method	Description
List<KeyColumn>	ClusterBy.getColumns()	The columns that comprise this key, in order.

Method parameters in org.apache.druid.frame.key with type arguments of type KeyColumn

Modifier and Type	Method	Description
static ByteRowKeyComparator	ByteRowKeyComparator.create(List<KeyColumn> keyColumns, RowSignature rowSignature)
static FrameComparisonWidgetImpl	FrameComparisonWidgetImpl.create(Frame frame, RowSignature signature, List<KeyColumn> keyColumns, List<FieldReader> keyColumnReaders)	Create a FrameComparisonWidget for the given frame.
static RowKeyComparator	RowKeyComparator.create(List<KeyColumn> keyColumns, RowSignature rowSignature)
static RowKeyComparisonRunLengths	RowKeyComparisonRunLengths.create(List<KeyColumn> keyColumns, RowSignature rowSignature)

Constructor parameters in org.apache.druid.frame.key with type arguments of type KeyColumn

Modifier	Constructor	Description
	ClusterBy(List<KeyColumn> columns, int bucketByCount)

Uses of KeyColumn in org.apache.druid.frame.read

Method parameters in org.apache.druid.frame.read with type arguments of type KeyColumn

Modifier and Type	Method	Description
FrameComparisonWidget	FrameReader.makeComparisonWidget(Frame frame, List<KeyColumn> keyColumns)	Create a FrameComparisonWidget for the given frame.

Uses of KeyColumn in org.apache.druid.frame.write

Method parameters in org.apache.druid.frame.write with type arguments of type KeyColumn

Modifier and Type	Method	Description
static FrameWriterFactory	FrameWriters.makeColumnBasedFrameWriterFactory(MemoryAllocatorFactory allocatorFactory, RowSignature signature, List<KeyColumn> sortColumns)
static FrameWriterFactory	FrameWriters.makeFrameWriterFactory(FrameType frameType, MemoryAllocatorFactory allocatorFactory, RowSignature signature, List<KeyColumn> sortColumns, boolean removeNullBytes)	Creates a FrameWriterFactory.
static void	FrameSort.sort(Frame frame, FrameReader frameReader, List<KeyColumn> keyColumns)	Sort the given frame in-place.
static RowSignature	FrameWriters.sortableSignature(RowSignature signature, List<KeyColumn> keyColumns)	Returns a copy of "signature" with columns rearranged so the provided sortColumns appear as a prefix.
static void	FrameWriterUtils.verifySortColumns(List<KeyColumn> keyColumns, RowSignature signature)	Verifies whether the provided sortColumns are all sortable, and are a prefix of the signature.

Constructor parameters in org.apache.druid.frame.write with type arguments of type KeyColumn

Modifier	Constructor	Description
	RowBasedFrameWriter(FrameType frameType, RowSignature signature, List<KeyColumn> sortColumns, List<FieldWriter> fieldWriters, Supplier<MemoryRange<org.apache.datasketches.memory.Memory>> rowMemorySupplier, AppendableMemory rowOrderMemory, AppendableMemory rowOffsetMemory, AppendableMemory dataMemory)
	RowBasedFrameWriterFactory(MemoryAllocatorFactory allocatorFactory, FrameType frameType, RowSignature signature, List<KeyColumn> sortColumns, boolean removeNullBytes)

Uses of KeyColumn in org.apache.druid.frame.write.columnar

Constructor parameters in org.apache.druid.frame.write.columnar with type arguments of type KeyColumn

Modifier	Constructor	Description
	ColumnarFrameWriter(RowSignature signature, List<KeyColumn> keyColumns, AppendableMemory rowOrderMemory, List<FrameColumnWriter> columnWriters)
	ColumnarFrameWriterFactory(MemoryAllocatorFactory allocatorFactory, RowSignature signature, List<KeyColumn> keyColumns)	Create a ColumnarFrameWriterFactory.