de.iip_ecosphere.platform.connectors.opcuav1

Class OpcUaConnector.NodeCacheEntry

java.lang.Object

de.iip_ecosphere.platform.connectors.opcuav1.OpcUaConnector.NodeCacheEntry

Enclosing class:

OpcUaConnector<CO,CI>

private static class OpcUaConnector.NodeCacheEntry
extends Object

Realizes a node cache entry with value lifetime.

Author:

Holger Eichelberger, SSE

Field Summary

Fields

Modifier and Type	Field and Description
private org.eclipse.milo.opcua.sdk.client.nodes.UaNode	node
private Object	value
private long	valueLifetime
private long	valueTimestamp

Constructor Summary

Constructors

Modifier	Constructor and Description
private	NodeCacheEntry() Creates a cache entry for a pseudo node, e.g., a built-in property.
private	NodeCacheEntry(org.eclipse.milo.opcua.sdk.client.nodes.UaNode node) Creates a cache entry for a given node.

Method Summary

Modifier and Type	Method and Description
private Object	getValue() Returns the value of this node considering the caching lifetime.
private void	setValue(Object value) Sets the cached value.
private void	setValue(Object value, int lifetime) Changes the value of a cached entry.

Methods inherited from class java.lang.Object

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

Field Detail

node

private org.eclipse.milo.opcua.sdk.client.nodes.UaNode node

valueLifetime

private long valueLifetime

valueTimestamp

private long valueTimestamp

value

private Object value

Constructor Detail

NodeCacheEntry

private NodeCacheEntry()

Creates a cache entry for a pseudo node, e.g., a built-in property.

NodeCacheEntry

private NodeCacheEntry(org.eclipse.milo.opcua.sdk.client.nodes.UaNode node)

Creates a cache entry for a given node.

Parameters:

node - the node

Method Detail

setValue

private void setValue(Object value)

Sets the cached value.

Parameters:

value -

setValue

private void setValue(Object value,
                      int lifetime)

Changes the value of a cached entry.

Parameters:

value -

lifetime -

getValue

private Object getValue()

Returns the value of this node considering the caching lifetime.

Returns:

the value of this node