Package io.activej.aggregation

Class AggregationState

java.lang.Object

io.activej.aggregation.AggregationState

All Implemented Interfaces:

OTState<AggregationDiff>

public final class AggregationState
extends Object
implements OTState<AggregationDiff>

Represents aggregation metadata. Chunks are stored in an index (represented by an array of RangeTree) for efficient search. Provides methods for managing index, querying for chunks by key, searching for chunks that are available for consolidation.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	AggregationState.ConsolidationDebugInfo

Method Summary

Modifier and Type	Method	Description
void	addToIndex(AggregationChunk chunk)
void	apply(AggregationDiff commit)
static boolean	chunkMightContainQueryValues(PrimaryKey minQueryKey, PrimaryKey maxQueryKey, PrimaryKey minChunkKey, PrimaryKey maxChunkKey)
List<AggregationChunk>	findChunks(AggregationPredicate predicate, List<String> fields)
List<AggregationChunk>	findChunksForConsolidationHotSegment(int maxChunks)
List<AggregationChunk>	findChunksForConsolidationHotSegment(int maxChunks, Set<Object> lockedChunkIds)
List<AggregationChunk>	findChunksForConsolidationMinKey(int maxChunks, int optimalChunkSize)
List<AggregationChunk>	findChunksForConsolidationMinKey(int maxChunks, int optimalChunkSize, Set<Object> lockedChunkIds)
List<AggregationChunk>	findChunksGroupWithMostOverlaps()
Set<AggregationChunk>	findOverlappingChunks()
Map<Object,AggregationChunk>	getChunks()
List<AggregationState.ConsolidationDebugInfo>	getConsolidationDebugInfo()
void	init()
void	removeFromIndex(AggregationChunk chunk)
String	toString()

Methods inherited from class java.lang.Object

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

Method Details

getChunks

public Map<Object,AggregationChunk> getChunks()

apply

public void apply(AggregationDiff commit)

Specified by:

apply in interface OTState<AggregationDiff>

addToIndex

public void addToIndex(AggregationChunk chunk)

removeFromIndex

public void removeFromIndex(AggregationChunk chunk)

init

public void init()

Specified by:

init in interface OTState<AggregationDiff>

findOverlappingChunks

public Set<AggregationChunk> findOverlappingChunks()

findChunksGroupWithMostOverlaps

public List<AggregationChunk> findChunksGroupWithMostOverlaps()

findChunksForConsolidationMinKey

public List<AggregationChunk> findChunksForConsolidationMinKey(int maxChunks,
 int optimalChunkSize)

findChunksForConsolidationMinKey

public List<AggregationChunk> findChunksForConsolidationMinKey(int maxChunks,
 int optimalChunkSize,
 Set<Object> lockedChunkIds)

findChunksForConsolidationHotSegment

public List<AggregationChunk> findChunksForConsolidationHotSegment(int maxChunks)

findChunksForConsolidationHotSegment

public List<AggregationChunk> findChunksForConsolidationHotSegment(int maxChunks,
 Set<Object> lockedChunkIds)

getConsolidationDebugInfo

public List<AggregationState.ConsolidationDebugInfo> getConsolidationDebugInfo()

chunkMightContainQueryValues

@VisibleForTesting
public static boolean chunkMightContainQueryValues(PrimaryKey minQueryKey,
 PrimaryKey maxQueryKey,
 PrimaryKey minChunkKey,
 PrimaryKey maxChunkKey)

findChunks

public List<AggregationChunk> findChunks(AggregationPredicate predicate,
 List<String> fields)

toString

public String toString()

Overrides:

toString in class Object