Package uk.ac.manchester.spinnaker.messages.notification

Class AbstractNotificationMessage

java.lang.Object

uk.ac.manchester.spinnaker.messages.notification.AbstractNotificationMessage

All Implemented Interfaces:

NotificationMessage, SerializableMessage

Direct Known Subclasses:

DatabaseConfirmation, PauseStop, StartResume

public abstract class AbstractNotificationMessage
extends Object
implements NotificationMessage

A base class for concrete notification messages.

Author:

Donal Fellows

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractNotificationMessage(ByteBuffer buffer)
	AbstractNotificationMessage(NotificationMessageCode command)

Method Summary

Modifier and Type	Method	Description
void	addToBuffer(ByteBuffer buffer)	Writes this message into the given buffer as a contiguous range of bytes.
static NotificationMessage	build(ByteBuffer buffer)	Create a notification message instance from a buffer holding a received message.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

AbstractNotificationMessage

protected AbstractNotificationMessage(ByteBuffer buffer)

Parameters:

buffer - Where to read the command code from. The command code will be in the first two bytes; this constructor advances the buffer position.

AbstractNotificationMessage

public AbstractNotificationMessage(NotificationMessageCode command)

Parameters:

command - The command code of the message.

Method Details

addToBuffer

@OverridingMethodsMustInvokeSuper public void addToBuffer(ByteBuffer buffer)

Description copied from interface: SerializableMessage

Writes this message into the given buffer as a contiguous range of bytes. This is so that a message can be sent. Implementors may assume that the buffer has been configured to be little-endian and that its position is at the point where they should begin writing. Once it has finished, the position should be immediately after the last byte written by this method.

Calling this method should not update the internal state of the message. It should be possible to add the message to multiple buffers without special precautions by the caller.

Specified by:

addToBuffer in interface SerializableMessage

Parameters:

buffer - The buffer to write into.

build

public static NotificationMessage build(ByteBuffer buffer)

Create a notification message instance from a buffer holding a received message.

Parameters:

buffer - The received message data buffer.

Returns:

The parsed message.

Throws:

UnsupportedOperationException - If the message is not understood.