Module org.elasticsearch.compute

Package org.elasticsearch.compute.aggregation.blockhash

Class BytesRefLongBlockHash

java.lang.Object

org.elasticsearch.compute.aggregation.blockhash.BlockHash

org.elasticsearch.compute.aggregation.blockhash.BytesRefLongBlockHash

All Implemented Interfaces:

Closeable, AutoCloseable, SeenGroupIds, org.elasticsearch.core.Releasable

public final class BytesRefLongBlockHash
extends BlockHash

Maps a LongBlock column paired with a BytesRefBlock column to group ids.

Nested Class Summary

Nested classes/interfaces inherited from class org.elasticsearch.compute.aggregation.blockhash.BlockHash

BlockHash.CategorizeDef, BlockHash.GroupSpec, BlockHash.TopNDef

Nested classes/interfaces inherited from interface org.elasticsearch.compute.aggregation.SeenGroupIds

SeenGroupIds.Empty, SeenGroupIds.Range

Field Summary

Fields inherited from class org.elasticsearch.compute.aggregation.blockhash.BlockHash

blockFactory

Method Summary

Modifier and Type	Method	Description
void	add(IntBlock bytesHashes, LongBlock longsBlock, GroupingAggregatorFunction.AddInput addInput)
IntVector	add(IntVector bytesHashes, LongVector longsVector)
void	add(Page page, GroupingAggregatorFunction.AddInput addInput)	Add all values for the "group by" columns in the page to the hash and pass the ordinals to the provided GroupingAggregatorFunction.AddInput.
void	add(Page page, IntVector bytesHashes, GroupingAggregatorFunction.AddInput addInput)
long	addGroup(long bytesKey, long longKey)
void	close()
long	getBytesRefKeyFromGroup(long groupId)
long	getGroupId(long bytesKey, long longKey)
Block[]	getKeys()	Returns a Block that contains all the keys that are inserted by BlockHash.add(org.elasticsearch.compute.data.Page, org.elasticsearch.compute.aggregation.GroupingAggregatorFunction.AddInput).
long	getLongKeyFromGroup(long groupId)
long	getMinLongKey()
org.elasticsearch.core.ReleasableIterator<IntBlock>	lookup(Page page, ByteSizeValue targetBlockSize)	Lookup all values for the "group by" columns in the page to the hash and return an Iterator of the values.
IntVector	nonEmpty()	The grouping ids that are not empty.
long	numGroups()
BitArray	seenGroupIds(BigArrays bigArrays)	The grouping ids that have been seen already.
String	toString()

Methods inherited from class org.elasticsearch.compute.aggregation.blockhash.BlockHash

build, buildCategorizeBlockHash, buildPackedValuesBlockHash, hashOrdToGroup, hashOrdToGroupNullReserved

Methods inherited from class java.lang.Object

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

Method Details

close

public void close()

add

public void add(Page page,
 GroupingAggregatorFunction.AddInput addInput)

Description copied from class: BlockHash

Add all values for the "group by" columns in the page to the hash and pass the ordinals to the provided GroupingAggregatorFunction.AddInput.

This call will not Releasable.close() addInput.

Specified by:

add in class BlockHash

add

public void add(Page page,
 IntVector bytesHashes,
 GroupingAggregatorFunction.AddInput addInput)

add

public void add(IntBlock bytesHashes,
 LongBlock longsBlock,
 GroupingAggregatorFunction.AddInput addInput)

add

public IntVector add(IntVector bytesHashes,
 LongVector longsVector)

lookup

public org.elasticsearch.core.ReleasableIterator<IntBlock> lookup(Page page,
 ByteSizeValue targetBlockSize)

Description copied from class: BlockHash

Lookup all values for the "group by" columns in the page to the hash and return an Iterator of the values. The sum of Block.getPositionCount() for all blocks returned by the iterator will equal Page.getPositionCount() but will "target" a size of targetBlockSize.

The returned ReleasableIterator may retain a reference to Blocks inside the Page. Close it to release those references.

Specified by:

lookup in class BlockHash

getKeys

public Block[] getKeys()

Description copied from class: BlockHash

Returns a Block that contains all the keys that are inserted by BlockHash.add(org.elasticsearch.compute.data.Page, org.elasticsearch.compute.aggregation.GroupingAggregatorFunction.AddInput).

Keys must be in the same order as the IDs returned by BlockHash.nonEmpty().

Specified by:

getKeys in class BlockHash

getBytesRefKeyFromGroup

public long getBytesRefKeyFromGroup(long groupId)

getLongKeyFromGroup

public long getLongKeyFromGroup(long groupId)

getGroupId

public long getGroupId(long bytesKey,
 long longKey)

addGroup

public long addGroup(long bytesKey,
 long longKey)

numGroups

public long numGroups()

getMinLongKey

public long getMinLongKey()

seenGroupIds

public BitArray seenGroupIds(BigArrays bigArrays)

Description copied from interface: SeenGroupIds

The grouping ids that have been seen already. This BitArray is kept and mutated by the caller so make a copy if it's something you need your own copy of it.

Specified by:

seenGroupIds in interface SeenGroupIds

Specified by:

seenGroupIds in class BlockHash

nonEmpty

public IntVector nonEmpty()

Description copied from class: BlockHash

The grouping ids that are not empty. We use this because some block hashes reserve space for grouping ids and then don't end up using them. For example, BooleanBlockHash does this by always assigning false to 0 and true to 1. It's only after collection when we know if there actually were any true or false values received.

IDs must be in the same order as the keys returned by BlockHash.getKeys().

Specified by:

nonEmpty in class BlockHash

toString

public String toString()

Overrides:

toString in class Object