com.facebook.presto.common.block

Class SingleMapBlock

java.lang.Object

com.facebook.presto.common.block.AbstractSingleMapBlock

com.facebook.presto.common.block.SingleMapBlock

All Implemented Interfaces:

Block, UncheckedBlock

public class SingleMapBlock
extends AbstractSingleMapBlock

Method Summary

Modifier and Type	Method and Description
Block	appendNull() Returns a block that has an appended null at the end, no matter if the original block has null or not.
String	getEncodingName() Get the encoding for this block.
Block	getLoadedBlock() Returns a block that assures all data is in memory.
int	getOffset()
int	getPositionCount() Returns the number of positions in this block.
long	getRetainedSizeInBytes() Returns the retained size of this block in memory, including over-allocations.
long	getSizeInBytes() Returns the size of this block as if it was compacted, ignoring any over-allocations.
void	retainedBytesForEachPart(BiConsumer<Object,Long> consumer) consumer visits each of the internal data container and accepts the size for it.
int	seekKey(Object nativeValue)
int	seekKeyExact(Block nativeValue)
int	seekKeyExact(boolean nativeValue)
int	seekKeyExact(double nativeValue)
int	seekKeyExact(long nativeValue)
int	seekKeyExact(io.airlift.slice.Slice nativeValue)
String	toString()

Methods inherited from class com.facebook.presto.common.block.AbstractSingleMapBlock

bytesCompare, bytesEqual, compareTo, copyPositions, copyRegion, equals, getBlock, getBlockUnchecked, getByte, getByteUnchecked, getEstimatedDataSizeForStats, getInt, getIntUnchecked, getLong, getLong, getLongUnchecked, getLongUnchecked, getOffsetBase, getPositionsSizeInBytes, getRegion, getRegionSizeInBytes, getShort, getShortUnchecked, getSingleValueBlock, getSlice, getSliceLength, getSliceLengthUnchecked, getSliceUnchecked, hash, isNull, isNullUnchecked, writeBytesTo, writePositionTo, writePositionTo

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.facebook.presto.common.block.Block

getLogicalSizeInBytes, getPositions, mayHaveNull

Method Detail

getPositionCount

public int getPositionCount()

Description copied from interface: Block

Returns the number of positions in this block.

getSizeInBytes

public long getSizeInBytes()

Description copied from interface: Block

Returns the size of this block as if it was compacted, ignoring any over-allocations. For example, in dictionary blocks, this only counts each dictionary entry once, rather than each time a value is referenced.

getRetainedSizeInBytes

public long getRetainedSizeInBytes()

Description copied from interface: Block

Returns the retained size of this block in memory, including over-allocations. This method is called from the inner most execution loop and must be fast.

retainedBytesForEachPart

public void retainedBytesForEachPart(BiConsumer<Object,Long> consumer)

Description copied from interface: Block

consumer visits each of the internal data container and accepts the size for it. This method can be helpful in cases such as memory counting for internal data structure. Also, the method should be non-recursive, only visit the elements at the top level, and specifically should not call retainedBytesForEachPart on nested blocks consumer should be called at least once with the current block and must include the instance size of the current block

getEncodingName

public String getEncodingName()

Description copied from interface: Block

Get the encoding for this block.

getOffset

public int getOffset()

toString

public String toString()

Overrides:

toString in class Object

getLoadedBlock

public Block getLoadedBlock()

Description copied from interface: Block

Returns a block that assures all data is in memory. May return the same block if all block data is already in memory.

This allows streaming data sources to skip sections that are not accessed in a query.

appendNull

public Block appendNull()

Description copied from interface: Block

Returns a block that has an appended null at the end, no matter if the original block has null or not. The original block won't be modified.

seekKey

public int seekKey(Object nativeValue)

Returns:

position of the value under nativeValue key. -1 when key is not found.

seekKeyExact

public int seekKeyExact(long nativeValue)

seekKeyExact

public int seekKeyExact(boolean nativeValue)

seekKeyExact

public int seekKeyExact(double nativeValue)

seekKeyExact

public int seekKeyExact(io.airlift.slice.Slice nativeValue)

seekKeyExact

public int seekKeyExact(Block nativeValue)