org.apache.flink.table.runtime.operators.sort

Class BinaryInMemorySortBuffer

java.lang.Object

org.apache.flink.table.runtime.operators.sort.BinaryIndexedSortable

org.apache.flink.table.runtime.operators.sort.BinaryInMemorySortBuffer

All Implemented Interfaces:

IndexedSortable

public final class BinaryInMemorySortBuffer
extends BinaryIndexedSortable

In memory sort buffer for binary row.

Field Summary

Fields inherited from class org.apache.flink.table.runtime.operators.sort.BinaryIndexedSortable

currentSortIndexOffset, currentSortIndexSegment, indexEntrySize, lastIndexEntryOffset, memorySegmentPool, numRecords, OFFSET_LEN, recordBuffer, row1, serializer, serializer1, sortIndex

Method Summary

Modifier and Type	Method and Description
static BinaryInMemorySortBuffer	createBuffer(NormalizedKeyComputer normalizedKeyComputer, AbstractRowDataSerializer<RowData> inputSerializer, BinaryRowDataSerializer serializer, RecordComparator comparator, MemorySegmentPool memoryPool) Create a memory sorter in `insert` way.
void	dispose()
long	getCapacity()
MutableObjectIterator<BinaryRowData>	getIterator() Gets an iterator over all records in this buffer in their logical order.
long	getOccupancy()
boolean	isEmpty() Checks whether the buffer is empty.
void	reset() Resets the sort buffer back to the state where it is empty.
void	returnToSegmentPool()
boolean	write(RowData record) Writes a given record to this sort buffer.

Methods inherited from class org.apache.flink.table.runtime.operators.sort.BinaryIndexedSortable

checkNextIndexOffset, compare, compare, nextMemorySegment, recordSize, recordsPerSegment, size, swap, swap, writeIndexAndNormalizedKey, writeToOutput

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

createBuffer

public static BinaryInMemorySortBuffer createBuffer(NormalizedKeyComputer normalizedKeyComputer,
                                                    AbstractRowDataSerializer<RowData> inputSerializer,
                                                    BinaryRowDataSerializer serializer,
                                                    RecordComparator comparator,
                                                    MemorySegmentPool memoryPool)

Create a memory sorter in `insert` way.

reset

public void reset()

Resets the sort buffer back to the state where it is empty. All contained data is discarded.

returnToSegmentPool

public void returnToSegmentPool()

isEmpty

public boolean isEmpty()

Checks whether the buffer is empty.

Returns:

True, if no record is contained, false otherwise.

dispose

public void dispose()

getCapacity

public long getCapacity()

getOccupancy

public long getOccupancy()

write

public boolean write(RowData record)
              throws IOException

Writes a given record to this sort buffer. The written record will be appended and take the last logical position.

Parameters:

record - The record to be written.

Returns:

True, if the record was successfully written, false, if the sort buffer was full.

Throws:

IOException - Thrown, if an error occurred while serializing the record into the buffers.

getIterator

public final MutableObjectIterator<BinaryRowData> getIterator()

Gets an iterator over all records in this buffer in their logical order.

Returns:

An iterator returning the records in their logical order.