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

Class AbstractAccessorVariable<T>

java.lang.Object

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

org.eclipse.scada.da.server.common.memory.AbstractAccessorVariable<T>

Type Parameters:

T - the type of the accessor

All Implemented Interfaces:

Variable

Direct Known Subclasses:

ByteVariable, DoubleIntegerVariable, Int16Variable, Int32Variable, Int64Variable, Int8Variable, WordVariable

public abstract class AbstractAccessorVariable<T>
extends ScalarVariable

An abstract variable implementation which is using Accessors for accessing the data

Field Summary

Fields inherited from class org.eclipse.scada.da.server.common.memory.ScalarVariable

block, index, item, offset

Constructor Summary

Constructors

Constructor and Description
AbstractAccessorVariable(String name, int index, ByteOrder order, Executor executor, ManageableObjectPool<DataItem> itemPool, org.eclipse.scada.da.server.common.memory.accessor.Accessor<T> accessor, Attribute... attributes)

Method Summary

Methods

Modifier and Type	Method and Description
protected Variant	extractValue(org.apache.mina.core.buffer.IoBuffer data, Map<String,Variant> attributes)
protected abstract T	getValue(Variant value)
protected NotifyFuture<WriteResult>	handleWrite(Variant value)

Methods inherited from class org.eclipse.scada.da.server.common.memory.ScalarVariable

handleAttributes, handleData, handleDisconnect, handleError, handleFailure, makeGlobalIndexValue, start, stop, toAddress

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractAccessorVariable

public AbstractAccessorVariable(String name,
                        int index,
                        ByteOrder order,
                        Executor executor,
                        ManageableObjectPool<DataItem> itemPool,
                        org.eclipse.scada.da.server.common.memory.accessor.Accessor<T> accessor,
                        Attribute... attributes)

Method Detail

getValue

protected abstract T getValue(Variant value)

handleWrite

protected NotifyFuture<WriteResult> handleWrite(Variant value)

Overrides:

handleWrite in class ScalarVariable

extractValue

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

Specified by:

extractValue in class ScalarVariable