jadex.commons.collection

Interface IBlockingQueue<T>

All Known Implementing Classes:

ArrayBlockingQueue, BlockingQueue

public interface IBlockingQueue<T>

A queue that blocks until an element is available.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	IBlockingQueue.ClosedException Closed exception.

Method Summary

Modifier and Type	Method and Description
T	dequeue() Dequeue an element.
T	dequeue(long timeout) Dequeue an element.
void	enqueue(T element) Enqueue an element.
boolean	isClosed() Check if the queue is closed.
T	peek() Peek the topmost element without dequeuing it.
java.util.List<T>	setClosed(boolean closed) Open/close the queue.
int	size() Get the size.

Method Detail

enqueue

void enqueue(T element)
      throws IBlockingQueue.ClosedException

Enqueue an element.

Parameters:

element - The element.

Throws:

IBlockingQueue.ClosedException

dequeue

T 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

peek

T peek()
throws IBlockingQueue.ClosedException

Peek the topmost element without dequeuing it.

Returns:

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

Throws:

IBlockingQueue.ClosedException

dequeue

T dequeue(long timeout)
   throws IBlockingQueue.ClosedException,
          java.util.concurrent.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

java.util.concurrent.TimeoutException

setClosed

java.util.List<T> setClosed(boolean closed)

Open/close the queue.

Parameters:

closed - The closed state.

Returns:

The remaining elements after the queue has been closed.

isClosed

boolean isClosed()

Check if the queue is closed.

size

int size()

Get the size.

Returns:

The size.