MessageQueue (pvDataJava 6.1.4 API)

```
public interface MessageQueue
```
A queue for Requester messages.

Author:

mrk

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`MessageNode`	`get()`	Get the next message.
`int`	`getClearOverrun()`	Get the number of calls to replaceFirst and/or replaceLast since the last call.
`boolean`	`isEmpty()`	Is the message queue empty?
`boolean`	`isFull()`	Is the queue full?
`boolean`	`put(String message, MessageType messageType, boolean replaceLast)`	PutFactory a new message into the queue.

- Method Detail
  - get
```
MessageNode get()
```
    Get the next message.
    
    Returns:
    
    the next message or null if no messages
  - put
```
boolean put(String message,
            MessageType messageType,
            boolean replaceLast)
```
    PutFactory a new message into the queue.
    
    Parameters:
    
    message - the message
    
    messageType - the message type
    
    replaceLast - whether the last message should be replaced by this message if queue is full
    
    Returns:
    
    true if the message was put into the queue or false if the queue was full
  - isEmpty
```
boolean isEmpty()
```
    Is the message queue empty?
    
    Returns:
    
    (false,true) if it (is not, is) empty
  - isFull
```
boolean isFull()
```
    Is the queue full?
    
    Returns:
    
    (false,true) if there (is, is not) a free MessageNode
  - getClearOverrun
```
int getClearOverrun()
```
    Get the number of calls to replaceFirst and/or replaceLast since the last call.
    
    Returns:
    
    the number of calls to replaceFirst and/or replaceLast since the last call