Package org.scictrl.csshell.epics

Class EPICSConnector.OneShotGet

java.lang.Object

org.scictrl.csshell.epics.EPICSConnector.OneShotGet

All Implemented Interfaces:

gov.aps.jca.event.ConnectionListener, gov.aps.jca.event.GetListener, EventListener

Enclosing class:

EPICSConnector

public static class EPICSConnector.OneShotGet
extends Object
implements gov.aps.jca.event.ConnectionListener, gov.aps.jca.event.GetListener

Makes one time asynchronous requests.

Constructor Summary

Constructors

Constructor	Description
OneShotGet(gov.aps.jca.Channel channel, gov.aps.jca.dbr.DBRType type)	Constructor
OneShotGet(String name, gov.aps.jca.Context ctx, gov.aps.jca.dbr.DBRType type)	Constructor.

Method Summary

Modifier and Type	Method	Description
void	connectionChanged(gov.aps.jca.event.ConnectionEvent ev)
void	getCompleted(gov.aps.jca.event.GetEvent ev)
gov.aps.jca.dbr.DBR	getFutureDBR(long timeout)	Requests DBR data and waits till result or timeout.
MetaData	getFutureMetaData(long timeout)	Requests metadata and waits for result or timeout.
Poop<?,gov.aps.jca.dbr.DBR>	getFuturePoop(long timeout)	Blacks call and waits for result in future.
void	requestMetaData(PropertyChangeListener callback)	Requests metadata in asynchronous way and delivers result to callback.

Methods inherited from class java.lang.Object

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

Constructor Details

OneShotGet

public OneShotGet(String name,
 gov.aps.jca.Context ctx,
 gov.aps.jca.dbr.DBRType type)
           throws IllegalStateException,
gov.aps.jca.CAException

Constructor.

Parameters:

name - the name of remote channel

ctx - the context for the connection

type - the data type of the connection

Throws:

IllegalStateException - if connection fails

gov.aps.jca.CAException - if connection fails

OneShotGet

public OneShotGet(gov.aps.jca.Channel channel,
 gov.aps.jca.dbr.DBRType type)

Constructor

Parameters:

channel - the channel to make requests to

type - the default data type

Method Details

connectionChanged

public void connectionChanged(gov.aps.jca.event.ConnectionEvent ev)

Specified by:

connectionChanged in interface gov.aps.jca.event.ConnectionListener

getCompleted

public void getCompleted(gov.aps.jca.event.GetEvent ev)

Specified by:

getCompleted in interface gov.aps.jca.event.GetListener

getFutureDBR

public gov.aps.jca.dbr.DBR getFutureDBR(long timeout)
                                 throws Exception

Requests DBR data and waits till result or timeout.

Parameters:

timeout - the timeout to wait for data

Returns:

returns DBR for connection

Throws:

Exception - if request fails

getFutureMetaData

public MetaData getFutureMetaData(long timeout)
                           throws Exception

Requests metadata and waits for result or timeout.

Parameters:

timeout - the timeout to wait for data

Returns:

returns MetaData object for channel.

Throws:

Exception - if request fails

requestMetaData

public void requestMetaData(PropertyChangeListener callback)
                     throws Exception

Requests metadata in asynchronous way and delivers result to callback.

Parameters:

callback - the callback for the request

Throws:

Exception - if request fails

getFuturePoop

public Poop<?,gov.aps.jca.dbr.DBR> getFuturePoop(long timeout)
                                          throws Exception

Blacks call and waits for result in future.

Parameters:

timeout - timeout for wiating

Returns:

result

Throws:

Exception - if error