com.cosylab.epics.caj.impl.handlers
Class AbstractCAResponseHandler

java.lang.Object
  com.cosylab.epics.caj.impl.handlers.AbstractCAResponseHandler

All Implemented Interfaces:

ResponseHandler

Direct Known Subclasses:

AbstractCAJResponseHandler, AbstractCASResponseHandler

public abstract class AbstractCAResponseHandler
extends Object
implements ResponseHandler

Version:

$id$

Author:

Matej Sekoranja

Field Summary

protected short	command Command field of the header.
protected int	dataCount Data count field of the header.
protected short	dataType Data type field of the header.
protected boolean	debug Debug flag.
protected String	description CA response description.
protected int	parameter1 Parameter 1 field of the header.
protected int	parameter2 Parameter 2 field of the header.
protected int	payloadSize Payload size field of the header.

Constructor Summary

AbstractCAResponseHandler(String description)

Method Summary

void	handleResponse(InetSocketAddress responseFrom, Transport transport, ByteBuffer[] response) NOTE: (Extended) header buffer size validation should have been already done.
protected abstract void	internalHandleResponse(InetSocketAddress responseFrom, Transport transport, ByteBuffer[] response) Called after header is parsed by parseHeader() method.
protected void	parseHeader(ByteBuffer headerBuffer) Parse CA response header.

Methods inherited from class java.lang.Object

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

Field Detail

description

protected String description

CA response description.

command

protected short command

Command field of the header.

payloadSize

protected int payloadSize

Payload size field of the header.

dataType

protected short dataType

Data type field of the header.

dataCount

protected int dataCount

Data count field of the header. NOTE: extended

parameter1

protected int parameter1

Parameter 1 field of the header.

parameter2

protected int parameter2

Parameter 2 field of the header.

debug

protected boolean debug

Debug flag.

Constructor Detail

AbstractCAResponseHandler

public AbstractCAResponseHandler(String description)

Parameters:

description -

Method Detail

handleResponse

public void handleResponse(InetSocketAddress responseFrom,
                           Transport transport,
                           ByteBuffer[] response)

NOTE: (Extended) header buffer size validation should have been already done. response is array of maximum of 2 elments: #UDP: contains whole response #TCP: first element contains complete standard or extended response message header, second whole payload. No buffer size checking is done.

Specified by:

handleResponse in interface ResponseHandler

Parameters:

responseFrom - remove address of the responder, null if unknown.

transport - response source transport.

response - array of response messages to handle. First buffer in array has to contain whole (extended) message header.

See Also:

ResponseHandler.handleResponse(java.net.InetSocketAddress, com.cosylab.epics.caj.impl.Transport, java.nio.ByteBuffer[])

internalHandleResponse

protected abstract void internalHandleResponse(InetSocketAddress responseFrom,
                                               Transport transport,
                                               ByteBuffer[] response)

Called after header is parsed by parseHeader() method.

See Also:

ResponseHandler.handleResponse(java.net.InetSocketAddress, com.cosylab.epics.caj.impl.Transport, java.nio.ByteBuffer[])

parseHeader

protected void parseHeader(ByteBuffer headerBuffer)

Parse CA response header.

Parameters:

headerBuffer - response header to be parsed.