com.db4o.foundation

Interface PausableBlockingQueue4<T>

All Superinterfaces:

BlockingQueue4<T>, Queue4<T>

All Known Subinterfaces:

TimeoutBlockingQueue4<T>

All Known Implementing Classes:

PausableBlockingQueue, TimeoutBlockingQueue

public interface PausableBlockingQueue4<T>
extends BlockingQueue4<T>

Method Summary

Methods

Modifier and Type	Method and Description
boolean	isPaused()
boolean	pause() Pauses the queue, making calls to Queue4.next() block until resume() is called.
boolean	resume() Resumes the queue, releasing blocked calls to Queue4.next() that can reach a next queue item..
T	tryNext() Returns the next element in queue if there is one available, returns null otherwise.

Methods inherited from interface com.db4o.foundation.BlockingQueue4

drainTo, next, stop

Methods inherited from interface com.db4o.foundation.Queue4

add, hasNext, iterator, next, nextMatching

Method Detail

pause

boolean pause()

Pauses the queue, making calls to Queue4.next() block until resume() is called.

Returns:

whether or not this call changed the state of the queue.

resume

boolean resume()

Resumes the queue, releasing blocked calls to Queue4.next() that can reach a next queue item..

Returns:

whether or not this call changed the state of the queue.

isPaused

boolean isPaused()

tryNext

T tryNext()

Returns the next element in queue if there is one available, returns null otherwise.

This method will not never block, regardless of the queue being paused or no elements are available.

Returns:

next element, if available and queue not paused.