Package org.apache.druid.query.timeseries

Class TimeseriesQueryEngine

java.lang.Object

org.apache.druid.query.timeseries.TimeseriesQueryEngine

public class TimeseriesQueryEngine
extends Object

Constructor Summary

Constructors

Constructor	Description
TimeseriesQueryEngine()	Constructor for tests.
TimeseriesQueryEngine(NonBlockingPool<ByteBuffer> bufferPool)

Method Summary

Modifier and Type	Method	Description
static CursorBuildSpec	makeCursorBuildSpec(TimeseriesQuery query, QueryMetrics<?> queryMetrics)
Sequence<Result<TimeseriesResultValue>>	process(TimeseriesQuery query, CursorFactory cursorFactory, TimeBoundaryInspector timeBoundaryInspector, TimeseriesQueryMetrics timeseriesQueryMetrics)	Run a single-segment, single-interval timeseries query on a particular adapter.

Methods inherited from class java.lang.Object

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

Constructor Details

TimeseriesQueryEngine

public TimeseriesQueryEngine()

Constructor for tests. In production, the @Inject constructor is used instead.

TimeseriesQueryEngine

@Inject
public TimeseriesQueryEngine(NonBlockingPool<ByteBuffer> bufferPool)

Method Details

process

public Sequence<Result<TimeseriesResultValue>> process(TimeseriesQuery query,
 CursorFactory cursorFactory,
 @Nullable
 TimeBoundaryInspector timeBoundaryInspector,
 @Nullable
 TimeseriesQueryMetrics timeseriesQueryMetrics)

Run a single-segment, single-interval timeseries query on a particular adapter. The query must have been scoped down to a single interval before calling this method.

makeCursorBuildSpec

public static CursorBuildSpec makeCursorBuildSpec(TimeseriesQuery query,
 @Nullable
 QueryMetrics<?> queryMetrics)