jadex.util.collection
Interface IBlockingQueue

All Known Implementing Classes:

ArrayBlockingQueue, BlockingQueue

public interface IBlockingQueue

A queue that blocks until an element is available.

Nested Class Summary

static class	IBlockingQueue.ClosedException Closed exception.
static class	IBlockingQueue.TimeoutException Timeout exception.

Method Summary

Object	dequeue() Dequeue an element.
Object	dequeue(long timeout) Dequeue an element.
void	enqueue(Object element) Enqueue an element.
void	setClosed(boolean closed) Open/close the queue.
int	size() Get the size.

Method Detail

enqueue

public void enqueue(Object element)
             throws IBlockingQueue.ClosedException

Enqueue an element.

Parameters:

element - The element.

Throws:

IBlockingQueue.ClosedException

dequeue

public Object dequeue()
               throws IBlockingQueue.ClosedException

Dequeue an element.

Returns:

The element. When queue is empty the methods blocks until an element is added.

Throws:

IBlockingQueue.ClosedException

dequeue

public Object dequeue(long timeout)
               throws IBlockingQueue.ClosedException,
                      IBlockingQueue.TimeoutException

Dequeue an element.

Parameters:

timeout - the time to wait (in millis) or -1 for no timeout.

Returns:

The element. When queue is empty the methods blocks until an element is added or the timeout occurs.

Throws:

IBlockingQueue.ClosedException

IBlockingQueue.TimeoutException

setClosed

public void setClosed(boolean closed)

Open/close the queue.

Parameters:

closed - The closed state.

size

public int size()

Get the size.

Returns:

The size.