ChannelRequest (pvAccessJava 5.1.8 API)

All Superinterfaces:

org.epics.pvdata.misc.Destroyable, Lockable

All Known Subinterfaces:

ChannelArray, ChannelGet, ChannelProcess, ChannelPut, ChannelPutGet, ChannelRPC

All Known Implementing Classes:

BaseV3ChannelGet, BaseV3ChannelPut, ChannelArrayRequestImpl, ChannelGetRequestImpl, ChannelProcessRequestImpl, ChannelPutGetRequestImpl, ChannelPutRequestImpl, ChannelRPCRequestImpl
```
public interface ChannelRequest
extends Lockable, org.epics.pvdata.misc.Destroyable
```
Base interface for all channel requests.

Author:

mse

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`cancel()`	Cancel any pending request.
`Channel`	`getChannel()`	Get a channel instance this request belongs to.
`void`	`lastRequest()`	Announce next request as last request.

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

Methods inherited from interface org.epics.pvaccess.client.Lockable
lock, unlock

- Method Detail
  - getChannel
```
Channel getChannel()
```
    Get a channel instance this request belongs to.
    
    Returns:
    
    the channel instance.
  - cancel
```
void cancel()
```
    Cancel any pending request. Completion will be reported via request's response callback:
    
    if cancel() request is issued after the request was already complete, request success/failure completion will be reported and cancel() request ignored.
    
    if the request was actually canceled, cancellation completion is reported.
  - lastRequest
```
void lastRequest()
```
    Announce next request as last request. When last request will be completed (regardless of completion status) the remote and local instance will be destroyed.