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

Method Summary

Methods

Modifier and Type	Method and Description
void	attachListener(java.lang.String nodeId, DataListener listener) Attach a listener to a data node
	deleteNode(java.lang.String nodeId)
void	detachListener(java.lang.String nodeId, DataListener listener)
	readNode(java.lang.String nodeId) Get the data node
	writeNode(DataNode node)

Method Detail

attachListener

void attachListener(java.lang.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(java.lang.String nodeId,
                  DataListener listener)

deleteNode

 deleteNode(java.lang.String nodeId)

writeNode

 writeNode(DataNode node)

readNode

 readNode(java.lang.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.