org.eclipse.scada.da.ui.connection.data

Class AbstractItemHolder

java.lang.Object

org.eclipse.scada.da.ui.connection.data.AbstractItemHolder

Direct Known Subclasses:

DataItemHolder, ItemListenerHolder

public abstract class AbstractItemHolder
extends Object

An abstract base class for implementing item holders
Note: Implementations must call init() in order to start the listening

Author:

Jens Reimann

Field Summary

Fields

Modifier and Type	Field and Description
protected Item	item

Constructor Summary

Constructors

Constructor and Description
AbstractItemHolder(org.osgi.framework.BundleContext context, Item item, ItemListenerHolder.HolderListener holderListener)

Method Summary

Modifier and Type	Method and Description
protected void	bindConnection(ConnectionService connectionService)
protected ConnectionRequest	createRequest()
void	dispose()
protected void	fireConnectionChange(ConnectionService connection)
protected void	fireConnectionStateChange(Connection connection, ConnectionState state, Throwable error)
Item	getItem()
protected void	init()
protected void	setConnection(ConnectionService connectionService)
NotifyFuture<WriteResult>	startWrite(Variant value, OperationParameters operationParameters, CallbackHandler callbackHandler)
NotifyFuture<WriteAttributeResults>	startWriteAttributes(Map<String,Variant> attributes, OperationParameters operationParameters, CallbackHandler callbackHandler)
protected void	unbindConnection()
boolean	waitForConnection(long timeout)
NotifyFuture<WriteResult>	write(Variant value)
NotifyFuture<WriteResult>	write(Variant value, OperationParameters operationParameters, CallbackHandler callbackHandler)
NotifyFuture<WriteAttributeResults>	writeAtrtibutes(Map<String,Variant> attributes)
NotifyFuture<WriteAttributeResults>	writeAtrtibutes(Map<String,Variant> attributes, OperationParameters operationParameters, CallbackHandler callbackHandler)

Methods inherited from class java.lang.Object

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

Field Detail

item

protected final Item item

Constructor Detail

AbstractItemHolder

public AbstractItemHolder(org.osgi.framework.BundleContext context,
                          Item item,
                          ItemListenerHolder.HolderListener holderListener)

Method Detail

init

protected void init()

setConnection

protected void setConnection(ConnectionService connectionService)

fireConnectionChange

protected void fireConnectionChange(ConnectionService connection)

fireConnectionStateChange

protected void fireConnectionStateChange(Connection connection,
                                         ConnectionState state,
                                         Throwable error)

bindConnection

protected void bindConnection(ConnectionService connectionService)

unbindConnection

protected void unbindConnection()

createRequest

protected ConnectionRequest createRequest()

dispose

public void dispose()

startWrite

public NotifyFuture<WriteResult> startWrite(Variant value,
                                            OperationParameters operationParameters,
                                            CallbackHandler callbackHandler)

startWriteAttributes

public NotifyFuture<WriteAttributeResults> startWriteAttributes(Map<String,Variant> attributes,
                                                                OperationParameters operationParameters,
                                                                CallbackHandler callbackHandler)

write

public NotifyFuture<WriteResult> write(Variant value)

write

public NotifyFuture<WriteResult> write(Variant value,
                                       OperationParameters operationParameters,
                                       CallbackHandler callbackHandler)

writeAtrtibutes

public NotifyFuture<WriteAttributeResults> writeAtrtibutes(Map<String,Variant> attributes)

writeAtrtibutes

public NotifyFuture<WriteAttributeResults> writeAtrtibutes(Map<String,Variant> attributes,
                                                           OperationParameters operationParameters,
                                                           CallbackHandler callbackHandler)

getItem

public Item getItem()

waitForConnection

public boolean waitForConnection(long timeout)
                          throws InterruptedException

Throws:

InterruptedException