Class StreamOperatorCollapseRuns.OperatorImpl

java.lang.Object

CollapseRunsOperationBase<T,K,V>.org.aksw.commons.util.stream.CollapseRunsOperationBase.AccumulatorBase

org.aksw.commons.util.stream.StreamOperatorCollapseRuns.OperatorImpl

Enclosing class:

StreamOperatorCollapseRuns<T,K,V>

public class StreamOperatorCollapseRuns.OperatorImpl
extends CollapseRunsOperationBase<T,K,V>.AccumulatorBase

TODO This class could be turned into a spliterator as follows: Upon splitting, consume one list of items with the same group key from the rhs. Append this list to the spliterator of the lhs.

Author:

raven

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	StreamOperatorCollapseRuns.OperatorImpl.InternalIterator

Field Summary

Fields

Modifier and Type	Field	Description
protected Iterator<Map.Entry<K,V>>	downstream
protected boolean	hasPendingGroup	If there is a pending group it will create a new accumulator on the next call to computeNext()
protected T	item	The last seen item
protected K	pendingGroupKey
protected Iterator<T>	upstream

Fields inherited from class CollapseRunsOperationBase.AccumulatorBase

accNum, currentAcc, currentKey, lastItemSent, priorKey

Constructor Summary

Constructors

Constructor	Description
OperatorImpl(Iterator<T> upstream)

Method Summary

Modifier and Type	Method	Description
Iterator<Map.Entry<K,V>>	getDownstream()
T	getLastSeenItem()

Methods inherited from class Object

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

Field Details

upstream

protected Iterator<T> upstream

downstream

protected Iterator<Map.Entry<K,V>> downstream

item

protected T item

The last seen item

hasPendingGroup

protected boolean hasPendingGroup

If there is a pending group it will create a new accumulator on the next call to computeNext()

pendingGroupKey

protected K pendingGroupKey

Constructor Details

OperatorImpl

public OperatorImpl(Iterator<T> upstream)

Method Details

getLastSeenItem

public T getLastSeenItem()

getDownstream

public Iterator<Map.Entry<K,V>> getDownstream()