Package 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
    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
    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
    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 Details

    • node

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

    • valueLifetime

      private long valueLifetime

    • valueTimestamp

      private long valueTimestamp

    • value

      private Object value

  • Constructor Details

    • 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 Details

    • setValue

      private void setValue(Object value)
      Sets the cached value.
      Parameters:
      value - the value to set

    • setValue

      private void setValue(Object value, int lifetime)
      Changes the value of a cached entry.
      Parameters:
      value - the value to set
      lifetime - the lifetime (negative unlimited, 0 request all time, positive caching time in ms)

    • getValue

      private Object getValue()
      Returns the value of this node considering the caching lifetime.
      Returns:
      the value of this node