com.squareup.tape

Interface ObjectQueue<T>

Type Parameters:

T - The type of queue for the elements.

All Known Implementing Classes:

FileObjectQueue, InMemoryObjectQueue, TaskQueue

public interface ObjectQueue<T>

A queue of objects.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	ObjectQueue.Listener<T> Listens for changes to the queue.

Method Summary

Modifier and Type	Method and Description
void	add(T entry) Enqueues an entry that can be processed at any time.
T	peek() Returns the head of the queue, or null if the queue is empty.
void	remove() Removes the head of the queue.
void	setListener(ObjectQueue.Listener<T> listener) Sets a listener on this queue.
int	size() Returns the number of entries in the queue.

Method Detail

size

int size()

Returns the number of entries in the queue.

add

void add(T entry)

Enqueues an entry that can be processed at any time.

peek

T peek()

Returns the head of the queue, or null if the queue is empty. Does not modify the queue.

remove

void remove()

Removes the head of the queue.

setListener

void setListener(ObjectQueue.Listener<T> listener)

Sets a listener on this queue. Invokes ObjectQueue.Listener.onAdd(com.squareup.tape.ObjectQueue<T>, T) once for each entry that's already in the queue. If an error occurs while reading the data, the listener will not receive further notifications.