org.eclipse.scada.ds

Interface DataStore

All Known Implementing Classes:

AbstractStorage, StorageImpl, StorageImpl

public interface DataStore

A data store service interface

Since:

0.15.0

Author:

Jens Reimann

Method Summary

Modifier and Type	Method and Description
void	attachListener(String nodeId, DataListener listener) Attach a listener to a data node
NotifyFuture<Void>	deleteNode(String nodeId)
void	detachListener(String nodeId, DataListener listener)
NotifyFuture<DataNode>	readNode(String nodeId) Get the data node
NotifyFuture<Void>	writeNode(DataNode node)

Method Detail

attachListener

void attachListener(String nodeId,
                    DataListener listener)

Attach a listener to a data node

The listener is called with the current status of the node when attaching.

Parameters:

nodeId - the node id to attach to

listener - the listener that will receive events

detachListener

void detachListener(String nodeId,
                    DataListener listener)

deleteNode

NotifyFuture<Void> deleteNode(String nodeId)

writeNode

NotifyFuture<Void> writeNode(DataNode node)

readNode

NotifyFuture<DataNode> readNode(String nodeId)

Get the data node

Parameters:

nodeId - the id of the node to get

Returns:

the future to the read request. The future will return null if the node does not exists.