org.apache.druid.query.vector

Class VectorCursorGranularizer

java.lang.Object

org.apache.druid.query.vector.VectorCursorGranularizer

public class VectorCursorGranularizer
extends Object

Class that helps vectorized query engines handle "granularity" parameters. Nonvectorized engines have it handled for them by the StorageAdapter. Vectorized engines don't, because they can get efficiency gains by pushing granularity handling into the engine layer.

Method Summary

Modifier and Type	Method and Description
boolean	advanceCursorWithinBucket() Return true, and advances the cursor, if it can be advanced within the current time bucket.
static VectorCursorGranularizer	create(StorageAdapter storageAdapter, VectorCursor cursor, Granularity granularity, org.joda.time.Interval queryInterval)
Iterable<org.joda.time.Interval>	getBucketIterable()
int	getEndOffset()
int	getStartOffset()
void	setCurrentOffsets(org.joda.time.Interval bucketInterval)

Methods inherited from class java.lang.Object

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

Method Detail

create

@Nullable
public static VectorCursorGranularizer create(StorageAdapter storageAdapter,
                                                        VectorCursor cursor,
                                                        Granularity granularity,
                                                        org.joda.time.Interval queryInterval)

setCurrentOffsets

public void setCurrentOffsets(org.joda.time.Interval bucketInterval)

advanceCursorWithinBucket

public boolean advanceCursorWithinBucket()

Return true, and advances the cursor, if it can be advanced within the current time bucket. Otherwise, returns false and does nothing else.

getBucketIterable

public Iterable<org.joda.time.Interval> getBucketIterable()

getStartOffset

public int getStartOffset()

getEndOffset

public int getEndOffset()