org.apache.druid.query.scan

Class ScanQueryOffsetSequence

java.lang.Object

org.apache.druid.java.util.common.guava.YieldingSequenceBase<ScanResultValue>

org.apache.druid.query.scan.ScanQueryOffsetSequence

All Implemented Interfaces:

Sequence<ScanResultValue>

public class ScanQueryOffsetSequence
extends YieldingSequenceBase<ScanResultValue>

A Sequence that wraps the results of a ScanQuery and skips a given number of rows. It is used to implement the "offset" feature.

Constructor Summary

Constructors

Constructor and Description
ScanQueryOffsetSequence(Sequence<ScanResultValue> baseSequence, long skip)

Method Summary

Modifier and Type	Method and Description
<OutType> Yielder<OutType>	toYielder(OutType initValue, YieldingAccumulator<OutType,ScanResultValue> accumulator) Return a Yielder for accumulated sequence.

Methods inherited from class org.apache.druid.java.util.common.guava.YieldingSequenceBase

accumulate

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.druid.java.util.common.guava.Sequence

filter, flatMap, flatMerge, forEach, limit, map, skip, toList, withBaggage, withEffect

Constructor Detail

ScanQueryOffsetSequence

public ScanQueryOffsetSequence(Sequence<ScanResultValue> baseSequence,
                               long skip)

Method Detail

toYielder

public <OutType> Yielder<OutType> toYielder(OutType initValue,
                                            YieldingAccumulator<OutType,ScanResultValue> accumulator)

Description copied from interface: Sequence

Return a Yielder for accumulated sequence.

Type Parameters:

OutType - the type of accumulated value.

Parameters:

initValue - the initial value to pass along to start the accumulation.

accumulator - the accumulator which is responsible for accumulating input values.

Returns:

a Yielder for accumulated sequence.

See Also:

Yielder