org.eclipse.scada.da.server.common.memory

Class ScalarVariable

java.lang.Object

org.eclipse.scada.da.server.common.memory.ScalarVariable

All Implemented Interfaces:

Variable

Direct Known Subclasses:

BitVariable, ByteVariable, DoubleIntegerVariable, FloatVariable, WordVariable

public abstract class ScalarVariable
extends Object
implements Variable

Field Summary

Fields

Modifier and Type	Field and Description
protected MemoryRequestBlock	block
protected int	index
protected MemoryDeviceDataitem	item
protected int	offset

Constructor Summary

Constructors

Constructor and Description
ScalarVariable(String name, int index, Executor executor, org.eclipse.scada.utils.osgi.pool.ManageableObjectPool<DataItem> itemPool, Attribute... attributes)

Method Summary

Methods

Modifier and Type	Method and Description
protected abstract org.eclipse.scada.core.Variant	extractValue(org.apache.mina.core.buffer.IoBuffer data, Map<String,org.eclipse.scada.core.Variant> attributes)
Map<String,WriteAttributeResult>	handleAttributes(Map<String,org.eclipse.scada.core.Variant> requests)
void	handleData(org.apache.mina.core.buffer.IoBuffer data, org.eclipse.scada.core.Variant timestamp)
void	handleDisconnect()
void	handleError(int errorCode)
void	handleFailure(Throwable e)
protected org.eclipse.scada.utils.concurrent.NotifyFuture<WriteResult>	handleWrite(org.eclipse.scada.core.Variant value)
protected org.eclipse.scada.core.Variant	makeGlobalIndexValue()
void	start(String parentName, BundleContext context, MemoryRequestBlock block, int offset)
void	stop(BundleContext context)
protected int	toAddress(int localAddress)

Methods inherited from class java.lang.Object

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

Field Detail

index

protected final int index

item

protected MemoryDeviceDataitem item

offset

protected int offset

block

protected MemoryRequestBlock block

Constructor Detail

ScalarVariable

public ScalarVariable(String name,
              int index,
              Executor executor,
              org.eclipse.scada.utils.osgi.pool.ManageableObjectPool<DataItem> itemPool,
              Attribute... attributes)

Method Detail

handleError

public void handleError(int errorCode)

Specified by:

handleError in interface Variable

handleDisconnect

public void handleDisconnect()

Specified by:

handleDisconnect in interface Variable

handleFailure

public void handleFailure(Throwable e)

Specified by:

handleFailure in interface Variable

start

public void start(String parentName,
         BundleContext context,
         MemoryRequestBlock block,
         int offset)

Specified by:

start in interface Variable

handleWrite

protected org.eclipse.scada.utils.concurrent.NotifyFuture<WriteResult> handleWrite(org.eclipse.scada.core.Variant value)

stop

public void stop(BundleContext context)

Specified by:

stop in interface Variable

extractValue

protected abstract org.eclipse.scada.core.Variant extractValue(org.apache.mina.core.buffer.IoBuffer data,
                                          Map<String,org.eclipse.scada.core.Variant> attributes)

handleData

public void handleData(org.apache.mina.core.buffer.IoBuffer data,
              org.eclipse.scada.core.Variant timestamp)

Specified by:

handleData in interface Variable

makeGlobalIndexValue

protected org.eclipse.scada.core.Variant makeGlobalIndexValue()

toAddress

protected int toAddress(int localAddress)

handleAttributes

public Map<String,WriteAttributeResult> handleAttributes(Map<String,org.eclipse.scada.core.Variant> requests)