12:46, EET
March 26, 2014
Hello,
Using SDK 4.5.8, I have a NullPointer with this stack trace sometimes (not always !) :
at com.prosysopc.ua.server.MonitoredDataItem.isAccessible(SourceFile:966)
at com.prosysopc.ua.server.MonitoredDataItem.notifyDataChange(SourceFile:390)
at com.prosysopc.ua.server.MonitoredDataItem.notifyDataChange(SourceFile:368)
at com.prosysopc.ua.server.MonitoredDataItem$2.onDataChange(SourceFile:226)
at com.prosysopc.ua.server.nodes.ServerNode.fireDataChange(SourceFile:786)
at com.prosysopc.ua.server.nodes.ServerNode.dataChange(SourceFile:659)
at com.prosysopc.ua.server.nodes.UaVariableNode.setValue(SourceFile:462)
I don’t think I had it with a previous version but hard to be sure, and I don’t know what is different when it works and when it fails!
17:12, EET
April 3, 2012
Hi,
Would it happen to be that for the Session (whose item it is) the ActivateSession is called again to change the user and that a value of the node for the item would also change at the same time. We might have a race condition in the current implementation if that happens (based on a very quick look at this).
Could be something else, but in general there has not been changes in a while (we did some fixes in 4.5.4 so depends from which version you did update).
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