io.druid.java.util.common.guava

Class BaseSequence<T,IterType extends Iterator<T>>

java.lang.Object

io.druid.java.util.common.guava.BaseSequence<T,IterType>

All Implemented Interfaces:

Sequence<T>

Direct Known Subclasses:

TopNSequence

public class BaseSequence<T,IterType extends Iterator<T>>
extends Object
implements Sequence<T>

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	BaseSequence.IteratorMaker<T,IterType extends Iterator<T>>

Constructor Summary

Constructors

Constructor and Description
BaseSequence(BaseSequence.IteratorMaker<T,IterType> maker)

Method Summary

Modifier and Type	Method and Description
<OutType> OutType	accumulate(OutType initValue, Accumulator<OutType,T> fn) Accumulate this sequence using the given accumulator.
<OutType> Yielder<OutType>	toYielder(OutType initValue, YieldingAccumulator<OutType,T> accumulator) Return an Yielder for accumulated sequence.

Methods inherited from class java.lang.Object

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

Constructor Detail

BaseSequence

public BaseSequence(BaseSequence.IteratorMaker<T,IterType> maker)

Method Detail

accumulate

public <OutType> OutType accumulate(OutType initValue,
                                    Accumulator<OutType,T> fn)

Description copied from interface: Sequence

Accumulate this sequence using the given accumulator.

Specified by:

accumulate in interface Sequence<T>

Type Parameters:

OutType - the type of accumulated value.

Parameters:

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

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

Returns:

accumulated value.

toYielder

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

Description copied from interface: Sequence

Return an Yielder for accumulated sequence.

Specified by:

toYielder in interface Sequence<T>

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:

an Yielder for accumulated sequence.

See Also:

Yielder