com.cosylab.epics.caj.impl.requests
Class ReadNotifyRequest

java.lang.Object
  com.cosylab.epics.caj.impl.requests.AbstractCARequest
      com.cosylab.epics.caj.impl.requests.ReadNotifyRequest

All Implemented Interfaces:

NotifyResponseRequest, Request, ResponseRequest

public class ReadNotifyRequest
extends AbstractCARequest
implements NotifyResponseRequest

CA read notify.

Version:

$id$

Author:

Matej Sekoranja

Field Summary

protected gov.aps.jca.event.GetListener	callback Response callback listener.
protected CAJChannel	channel Channel.
protected CAJContext	context Context.
protected gov.aps.jca.dbr.DBR	dbr DBR to be set (sync.
protected int	ioid I/O ID given by the context when registered.
protected boolean	prohibitIOCancel Requested data count.
protected int	requestedDataCount Requested data count.
protected int	requestedDataType Requested data type.
protected int	sequenceNumberIO IO sequence number.
protected int	sid Channel server ID.
protected boolean	sync Sync.

Fields inherited from class com.cosylab.epics.caj.impl.requests.AbstractCARequest

requestMessage, transport

Fields inherited from interface com.cosylab.epics.caj.impl.Request

DEFAULT_USER_PRIORITY, MAX_USER_PRIORITY, MIN_USER_PRIORITY, SEND_IMMEDIATELY_PRIORITY

Constructor Summary

ReadNotifyRequest(CAJChannel channel, gov.aps.jca.event.GetListener callback, gov.aps.jca.dbr.DBR dbr, Transport transport, int sid, int dataType, int dataCount)

Method Summary

void	cancel() Cancel response request (allways to be called to complete/destroy).
void	exception(int errorCode, String errorMessage) Exception response notification.
int	getIOID() Get I/O ID.
void	response(int status, short dataType, int dataCount, ByteBuffer dataPayloadBuffer) Notification response.
void	submit() If sync.
void	timeout() Timeout notification.

Methods inherited from class com.cosylab.epics.caj.impl.requests.AbstractCARequest

alignBuffer, calculateAlignedSize, generateRequestMessage, getPriority, getRequestMessage, insertCAHeader

Methods inherited from class java.lang.Object

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

Field Detail

context

protected CAJContext context

Context.

ioid

protected int ioid

I/O ID given by the context when registered.

sid

protected int sid

Channel server ID.

callback

protected gov.aps.jca.event.GetListener callback

Response callback listener.

dbr

protected gov.aps.jca.dbr.DBR dbr

DBR to be set (sync. request).

sync

protected boolean sync

Sync. request flag.

sequenceNumberIO

protected int sequenceNumberIO

IO sequence number.

channel

protected CAJChannel channel

Channel.

requestedDataType

protected int requestedDataType

Requested data type.

requestedDataCount

protected int requestedDataCount

Requested data count.

prohibitIOCancel

protected boolean prohibitIOCancel

Requested data count.

Constructor Detail

ReadNotifyRequest

public ReadNotifyRequest(CAJChannel channel,
                         gov.aps.jca.event.GetListener callback,
                         gov.aps.jca.dbr.DBR dbr,
                         Transport transport,
                         int sid,
                         int dataType,
                         int dataCount)

Parameters:

channel -

callback -

dbr -

transport -

sid -

dataType -

dataCount -

Method Detail

getIOID

public int getIOID()

Description copied from interface: ResponseRequest

Get I/O ID.

Specified by:

getIOID in interface ResponseRequest

Returns:

ioid

See Also:

ResponseRequest.getIOID()

response

public void response(int status,
                     short dataType,
                     int dataCount,
                     ByteBuffer dataPayloadBuffer)

Description copied from interface: NotifyResponseRequest

Notification response.

Specified by:

response in interface NotifyResponseRequest

See Also:

NotifyResponseRequest.response(int, short, int, java.nio.ByteBuffer)

submit

public void submit()
            throws IOException

If sync. request (i.e. w/o callback), additionally increment context pending requests.

Specified by:

submit in interface Request

Overrides:

submit in class AbstractCARequest

Throws:

IOException

See Also:

Request.submit()

cancel

public void cancel()

Description copied from interface: ResponseRequest

Cancel response request (allways to be called to complete/destroy).

Specified by:

cancel in interface ResponseRequest

See Also:

ResponseRequest.cancel()

timeout

public void timeout()

Description copied from interface: ResponseRequest

Timeout notification.

Specified by:

timeout in interface ResponseRequest

See Also:

ResponseRequest.timeout()

exception

public void exception(int errorCode,
                      String errorMessage)

Description copied from interface: ResponseRequest

Exception response notification.

Specified by:

exception in interface ResponseRequest

Parameters:

errorCode - exception code.

errorMessage - received detailed message.

See Also:

ResponseRequest.exception(int, java.lang.String)