MessageQueue (de.enflexit.jade 4.6.4 API)

All Known Implementing Classes:

ExtendedMessageQueue, TemplateBasedMessageQueue
```
public interface MessageQueue
```
The interface to be implemented by agent message queue implementations

Author:

Arend Freije

See Also:

Agent.createMessageQueue()

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`addFirst(ACLMessage msg)`	Add a message to the front of this queue.
`void`	`addLast(ACLMessage msg)`	Add a message to the end of this queue.
`void`	`copyTo(List list)`	Copy all messages to a given list.
`int`	`getMaxSize()`	Return the maximum size of this queue.
`boolean`	`isEmpty()`	Return true when this queue contains no messages.
`ACLMessage`	`receive(MessageTemplate pattern)`	Return and remove the first message that matches the specified message template.
`List<ACLMessage>`	`receive(MessageTemplate pattern, int max)`	Return and remove the first n messages that match the specified message template.
`void`	`setMaxSize(int newSize)`	Set the maximum size of this queue.
`int`	`size()`

- Method Detail
  - addFirst
```
void addFirst(ACLMessage msg)
```
    Add a message to the front of this queue.
  - addLast
```
void addLast(ACLMessage msg)
```
    Add a message to the end of this queue.
  - getMaxSize
```
int getMaxSize()
```
    Return the maximum size of this queue. This queue may remove old messages to prevent exeding the maximum size.
  - setMaxSize
```
void setMaxSize(int newSize)
```
    Set the maximum size of this queue. This queue may remove old messages to prevent exeding the maximum size.
  - isEmpty
```
boolean isEmpty()
```
    Return true when this queue contains no messages.
  - receive
```
ACLMessage receive(MessageTemplate pattern)
```
    Return and remove the first message that matches the specified message template.
  - receive
```
List<ACLMessage> receive(MessageTemplate pattern,
                         int max)
```
    Return and remove the first n messages that match the specified message template.
  - copyTo
```
void copyTo(List list)
```
    Copy all messages to a given list.
  - size
```
int size()
```
    Returns:
    
    the number of messages currently in the queue