org.apache.ignite.streamer.window

Class StreamerUnboundedWindow<E>

java.lang.Object

org.apache.ignite.streamer.window.StreamerWindowAdapter<E>

org.apache.ignite.streamer.window.StreamerUnboundedWindow<E>

All Implemented Interfaces:

Iterable<E>, LifecycleAware, StreamerWindow<E>, StreamerWindowMBean

public class StreamerUnboundedWindow<E>
extends StreamerWindowAdapter<E>

Unbounded window which holds all events. Events can be evicted manually from window via any of the dequeue(...) methods.

Constructor Summary

Constructors

Constructor and Description
StreamerUnboundedWindow()

Method Summary

Methods

Modifier and Type	Method and Description
void	checkConfiguration() Check window configuration.
protected Collection<E>	dequeue0(int cnt) Dequeues up to cnt elements from window.
boolean	enqueue0(E evt) Adds event to window.
int	evictionQueueSize() Gets number of entries available for eviction.
protected GridStreamerWindowIterator<E>	iterator0() Returns an iterator over a set of elements of type T without check for iteration limit.
protected Collection<E>	pollEvicted0(int cnt) If window supports eviction, this method will return up to cnt evicted elements.
protected Collection<E>	pollEvictedBatch0() If window supports batch eviction, this method will poll next evicted batch from window.
protected void	reset0() Reset routine.
int	size() Gets number of events currently stored in window.
protected void	stop0() Dispose window.

Methods inherited from class org.apache.ignite.streamer.window.StreamerWindowAdapter

clearEvicted, dequeue, dequeue, dequeueAll, enqueue, enqueue, enqueueAll, getClassName, getEvictionQueueSize, getFilter, getName, getSize, index, index, indexes, indexProviders, iterator, name, pollEvicted, pollEvicted, pollEvictedAll, pollEvictedBatch, reset, setFilter, setIndexes, setName, snapshot, start, stop, updateIndexes

Methods inherited from class java.lang.Object

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

Constructor Detail

StreamerUnboundedWindow

public StreamerUnboundedWindow()

Method Detail

stop0

protected void stop0()

Dispose window.

Specified by:

stop0 in class StreamerWindowAdapter<E>

checkConfiguration

public void checkConfiguration()

Check window configuration.

Specified by:

checkConfiguration in class StreamerWindowAdapter<E>

reset0

protected void reset0()

Reset routine.

Specified by:

reset0 in class StreamerWindowAdapter<E>

size

public int size()

Gets number of events currently stored in window.

Returns:

Current size of the window.

iterator0

protected GridStreamerWindowIterator<E> iterator0()

Returns an iterator over a set of elements of type T without check for iteration limit. That is, in case concurrent thread constantly adding new elements to the window we could iterate forever.

Specified by:

iterator0 in class StreamerWindowAdapter<E>

Returns:

Iterator.

evictionQueueSize

public int evictionQueueSize()

Gets number of entries available for eviction.

Returns:

Number of entries available for eviction.

enqueue0

public boolean enqueue0(E evt)

Adds event to window.

Specified by:

enqueue0 in class StreamerWindowAdapter<E>

Parameters:

evt - Event.

Returns:

True if event added.

dequeue0

protected Collection<E> dequeue0(int cnt)

Dequeues up to cnt elements from window. If current window size is less than cnt, will dequeue all elements from window.

Specified by:

dequeue0 in class StreamerWindowAdapter<E>

Parameters:

cnt - Count.

Returns:

Dequeued elements.

pollEvicted0

protected Collection<E> pollEvicted0(int cnt)

If window supports eviction, this method will return up to cnt evicted elements.

Specified by:

pollEvicted0 in class StreamerWindowAdapter<E>

Parameters:

cnt - Count.

Returns:

Evicted elements.

pollEvictedBatch0

protected Collection<E> pollEvictedBatch0()

If window supports batch eviction, this method will poll next evicted batch from window. If windows does not support batch eviction but supports eviction, will return collection of single last evicted element. If window does not support eviction, will return empty collection.

Specified by:

pollEvictedBatch0 in class StreamerWindowAdapter<E>

Returns:

Elements from evicted batch.