Package org.epics.pvaccess.client.impl.remote

Class ChannelGetRequestImpl

java.lang.Object

org.epics.pvaccess.client.impl.remote.BaseRequestImpl

org.epics.pvaccess.client.impl.remote.ChannelGetRequestImpl

All Implemented Interfaces:

ChannelGet, ChannelRequest, Lockable, DataResponse, ResponseRequest, SubscriptionRequest, TransportSender, org.epics.pvdata.misc.Destroyable

public class ChannelGetRequestImpl
extends BaseRequestImpl
implements ChannelGet

PVA get request.

Version:

$Id$

Author:

Matej Sekoranja

Field Summary

Fields

Modifier and Type	Field	Description
protected org.epics.pvdata.misc.BitSet	bitSet
protected ChannelGetRequester	callback	Response callback listener.
protected org.epics.pvdata.pv.PVStructure	data

Fields inherited from class org.epics.pvaccess.client.impl.remote.BaseRequestImpl

channel, channelDestroyed, channelNotConnected, context, destroyed, destroyedStatus, invalidBitSetLengthStatus, invalidPutArrayStatus, invalidPutStructureStatus, ioid, lastRequest, lock, NULL_REQUEST, okStatus, otherRequestPendingStatus, pendingRequest, PURE_CANCEL_REQUEST, PURE_DESTROY_REQUEST, pvDataCreate, pvRequest, remotelyDestroyed, requester, statusCreate, subscribed

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ChannelGetRequestImpl(ChannelImpl channel, ChannelGetRequester callback, org.epics.pvdata.pv.PVStructure pvRequest)

Method Summary

Modifier and Type	Method	Description
protected void	activate()
static ChannelGetRequestImpl	create(ChannelImpl channel, ChannelGetRequester callback, org.epics.pvdata.pv.PVStructure pvRequest)
void	get()	Get data from the channel.
void	send(ByteBuffer buffer, TransportSendControl control)	Called by transport.

Methods inherited from class org.epics.pvaccess.client.impl.remote.BaseRequestImpl

cancel, createBitSetFor, destroy, destroy, getChannel, getIOID, getPendingRequest, getRequester, lastRequest, lock, reportStatus, response, resubscribeSubscription, reuseOrCreatePVField, startRequest, stopRequest, timeout, unlock, updateSubscription

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.epics.pvaccess.client.ChannelRequest

cancel, getChannel, lastRequest

Methods inherited from interface org.epics.pvdata.misc.Destroyable

destroy

Methods inherited from interface org.epics.pvaccess.client.Lockable

lock, unlock

Field Detail

callback

protected final ChannelGetRequester callback

Response callback listener.

data

protected org.epics.pvdata.pv.PVStructure data

bitSet

protected org.epics.pvdata.misc.BitSet bitSet

Constructor Detail

ChannelGetRequestImpl

protected ChannelGetRequestImpl(ChannelImpl channel,
                                ChannelGetRequester callback,
                                org.epics.pvdata.pv.PVStructure pvRequest)

Method Detail

create

public static ChannelGetRequestImpl create(ChannelImpl channel,
                                           ChannelGetRequester callback,
                                           org.epics.pvdata.pv.PVStructure pvRequest)

activate

protected void activate()

Overrides:

activate in class BaseRequestImpl

send

public void send(ByteBuffer buffer,
                 TransportSendControl control)

Description copied from interface: TransportSender

Called by transport. By this call transport gives callee ownership over the buffer. Calls on TransportSendControl instance must be made from calling thread. Moreover, ownership is valid only for the time of call of this method. NOTE: these limitations allow efficient implementation.

Specified by:

send in interface TransportSender

Overrides:

send in class BaseRequestImpl

Parameters:

buffer - buffer to send.

control - transport send control instance.

get

public void get()

Description copied from interface: ChannelGet

Get data from the channel. Completion status is reported by calling ChannelGetRequester.getDone() callback.

Specified by:

get in interface ChannelGet