org.eclipse.scada.da.client

Class AsyncDataItem

java.lang.Object

java.util.Observable

org.eclipse.scada.da.client.DataItem

org.eclipse.scada.da.client.AsyncDataItem

public class AsyncDataItem
extends DataItem

A data item which performs the notification asynchronously

Author:

Jens Reimann

Constructor Summary

Constructors

Constructor and Description
AsyncDataItem(String itemId)
AsyncDataItem(String itemId, ItemManager connection)
AsyncDataItem(String itemId, ItemManager connection, ExecutorService executor)

Method Summary

Methods

Modifier and Type	Method and Description
protected void	finalize()
protected void	performNotifyDataChange(Variant value, Map<String,Variant> attributes, boolean cache)
protected void	performNotifySubscriptionChange(SubscriptionState subscriptionState, Throwable subscriptionError)

Methods inherited from class org.eclipse.scada.da.client.DataItem

addPropertyChangeListener, addPropertyChangeListener, getAttributes, getItemId, getSnapshotValue, getSubscriptionError, getSubscriptionState, handlePerformNotifyDataChange, handlePerformNotifySubscriptionChange, register, removePropertyChangeListener, removePropertyChangeListener, unregister

Methods inherited from class java.util.Observable

addObserver, clearChanged, countObservers, deleteObserver, deleteObservers, hasChanged, notifyObservers, notifyObservers, setChanged

Methods inherited from class java.lang.Object

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

Constructor Detail

AsyncDataItem

public AsyncDataItem(String itemId)

AsyncDataItem

public AsyncDataItem(String itemId,
             ItemManager connection)

AsyncDataItem

public AsyncDataItem(String itemId,
             ItemManager connection,
             ExecutorService executor)

Method Detail

performNotifyDataChange

protected void performNotifyDataChange(Variant value,
                           Map<String,Variant> attributes,
                           boolean cache)

Overrides:

performNotifyDataChange in class DataItem

performNotifySubscriptionChange

protected void performNotifySubscriptionChange(SubscriptionState subscriptionState,
                                   Throwable subscriptionError)

Overrides:

performNotifySubscriptionChange in class DataItem

finalize

protected void finalize()
                 throws Throwable

Overrides:

finalize in class Object

Throws:

Throwable