All Known Implementing Classes:

RedeliveryQueueImpl
```
public interface RedeliveryQueue
```

Field Summary

Fields
Modifier and Type Field Description

static String DEFAULT_BASE_REDELIVERY_INTERVAL

static int DEFAULT_EXPONENTIAL_BACKOFF

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`addUndelivered(Message message)`	Accepts a failed message for possible future redelivery.
`int`	`countUndelivered()`
`int`	`countUndelivered(DestinationSequence seq)`
`RetryStatus`	`getRedeliveryStatus(DestinationSequence seq, long num)`	Returns the retransmission status for the specified message.
`Map<Long,RetryStatus>`	`getRedeliveryStatuses(DestinationSequence seq)`	Return the retransmission status of all the messages assigned to the sequence.
`List<Long>`	`getUndeliveredMessageNumbers(DestinationSequence seq)`
`boolean`	`isEmpty()`
`void`	`purgeAll(DestinationSequence seq)`	Purge all candiates for the given sequence.
`void`	`resume(DestinationSequence seq)`	Resumes the redelivery attempts for the specified sequence
`void`	`start()`	Initiate resends.
`void`	`stop(DestinationSequence seq)`	Stops redelivery queue.
`void`	`suspend(DestinationSequence seq)`	Suspends the redelivery attempts for the specified sequence

- Field Detail
  - DEFAULT_BASE_REDELIVERY_INTERVAL
```
static final String DEFAULT_BASE_REDELIVERY_INTERVAL
```
    See Also:
    
    Constant Field Values
  - DEFAULT_EXPONENTIAL_BACKOFF
```
static final int DEFAULT_EXPONENTIAL_BACKOFF
```
    See Also:
    
    Constant Field Values
- Method Detail
  - countUndelivered
```
int countUndelivered(DestinationSequence seq)
```
    Parameters:
    
    seq - the sequence under consideration
    
    Returns:
    
    the number of unacknowledged messages for that sequence
  - countUndelivered
```
int countUndelivered()
```
    Returns:
    
    the total number of undelivered messages in this queue
  - isEmpty
```
boolean isEmpty()
```
    Returns:
    
    true if there are no unacknowledged messages in the queue
  - addUndelivered
```
void addUndelivered(Message message)
```
    Accepts a failed message for possible future redelivery.
    
    Parameters:
    
    message - the message context.
  - purgeAll
```
void purgeAll(DestinationSequence seq)
```
    Purge all candiates for the given sequence.
    
    Parameters:
    
    seq - the sequence object
  - getUndeliveredMessageNumbers
```
List<Long> getUndeliveredMessageNumbers(DestinationSequence seq)
```
    Parameters:
    
    seq -
    
    Returns:
  - getRedeliveryStatus
```
RetryStatus getRedeliveryStatus(DestinationSequence seq,
                                long num)
```
    Returns the retransmission status for the specified message.
    
    Parameters:
    
    seq -
    
    num -
    
    Returns:
  - getRedeliveryStatuses
```
Map<Long,RetryStatus> getRedeliveryStatuses(DestinationSequence seq)
```
    Return the retransmission status of all the messages assigned to the sequence.
    
    Parameters:
    
    seq -
    
    Returns:
  - start
```
void start()
```
    Initiate resends.
  - stop
```
void stop(DestinationSequence seq)
```
    Stops redelivery queue.
    
    Parameters:
    
    seq -
  - suspend
```
void suspend(DestinationSequence seq)
```
    Suspends the redelivery attempts for the specified sequence
    
    Parameters:
    
    seq -
  - resume
```
void resume(DestinationSequence seq)
```
    Resumes the redelivery attempts for the specified sequence
    
    Parameters:
    
    seq -

Modifier and Type	Field	Description
`static String`	`DEFAULT_BASE_REDELIVERY_INTERVAL`
`static int`	`DEFAULT_EXPONENTIAL_BACKOFF`

Interface RedeliveryQueue

Field Summary

Method Summary

Field Detail

DEFAULT_BASE_REDELIVERY_INTERVAL

DEFAULT_EXPONENTIAL_BACKOFF

Method Detail

countUndelivered

countUndelivered

isEmpty

addUndelivered

purgeAll

getUndeliveredMessageNumbers

getRedeliveryStatus

getRedeliveryStatuses

start

stop

suspend

resume