PausableBlockingQueue4 SourceCode GPL - https://github.com/iboxdb/db4o-gpl

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

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	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.