MonitorMessageHandler (NetarchiveSuite 7.0 API)

java.lang.Object
- dk.netarkivet.monitor.distribute.MonitorMessageHandler

All Implemented Interfaces:

MonitorMessageVisitor, javax.jms.MessageListener

Direct Known Subclasses:

MonitorRegistryServer
```
public abstract class MonitorMessageHandler
extends java.lang.Object
implements MonitorMessageVisitor, javax.jms.MessageListener
```
This default message handler shields of all unimplemented methods from the MonitorMessageVisitor interface.
Classes should not implement MonitorMessageVisitor but extend this class.

See Also:

MonitorMessageVisitor

Constructor Summary

Constructors
Constructor Description

MonitorMessageHandler()
Creates a MonitorMessageHandler object.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`onMessage(javax.jms.Message msg)`	Unpacks and calls accept() on the message object.
`void`	`visit(RegisterHostMessage msg)`	This method should be overridden and implemented by a sub class if message handling is wanted.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - MonitorMessageHandler
```
public MonitorMessageHandler()
```
    Creates a MonitorMessageHandler object.
- Method Detail
  - onMessage
```
public void onMessage(javax.jms.Message msg)
```
    Unpacks and calls accept() on the message object.
    This method catches all exceptions and logs them.
    
    Specified by:
    
    onMessage in interface javax.jms.MessageListener
    
    Parameters:
    
    msg - a ObjectMessage
  - visit
```
public void visit(RegisterHostMessage msg)
           throws PermissionDenied
```
    This method should be overridden and implemented by a sub class if message handling is wanted.
    
    Specified by:
    
    visit in interface MonitorMessageVisitor
    
    Parameters:
    
    msg - a RegisterHostMessage
    
    Throws:
    
    PermissionDenied - when invoked