[Bug]: plc4j-driver-opcua - ArrayStoreException when accessing node by GUID

[Rajmund Takács]

What happened?

If I attempt to access an OPC-UA node by GUID, I'm getting the following exception:

Exception in thread "main" java.lang.ArrayStoreException: arraycopy: source type java.lang.Long is not an array
	at java.base/java.lang.System.arraycopy(Native Method)
	at org.apache.plc4x.java.opcua.protocol.OpcuaProtocolLogic.generateNodeId(OpcuaProtocolLogic.java:234)
	at org.apache.plc4x.java.opcua.protocol.OpcuaProtocolLogic.read(OpcuaProtocolLogic.java:146)
	at org.apache.plc4x.java.spi.optimizer.BaseOptimizer.lambda$optimizedRead$0(BaseOptimizer.java:107)
	at org.apache.plc4x.java.spi.optimizer.BaseOptimizer.send(BaseOptimizer.java:150)
	at org.apache.plc4x.java.spi.optimizer.BaseOptimizer.optimizedRead(BaseOptimizer.java:107)
	at org.apache.plc4x.java.spi.connection.AbstractPlcConnection.read(AbstractPlcConnection.java:167)
	at org.apache.plc4x.java.spi.messages.DefaultPlcReadRequest.execute(DefaultPlcReadRequest.java:60)
	at org.example.ManualOpcuaGuidTag.main(ManualOpcuaGuidTag.java:20)

Example code to reproduce the issue:

PlcDriverManager driverManager = new PlcDriverManager();
try (PlcConnection opcuaConnection = driverManager.getConnection("opcua:tcp://opcuaserver.com:48010")) {
    PlcReadRequest request = opcuaConnection.readRequestBuilder()
            .addItem(
                    "VariableWithGuidNodeId",
                    "ns=2;g=5CE9DBCE-5D79-434C-9AC3-1CFBA9A6E92C"
            )
            .build();

    PlcReadResponse response = request.execute().get();
    System.out.println(response.getObject("VariableWithGuidNodeId"));
}

It applies to the latest revision of develop branch too.
I have already posted a PR to fix it: #1099

Logs

• logs.txt

Version

v0.10.0

Programming Languages

• plc4j
• plc4go
• plc4c
• plc4net

Protocols

• AB-Ethernet
• ADS /AMS
• BACnet/IP
• CANopen
• DeltaV
• DF1
• EtherNet/IP
• Firmata
• KNXnet/IP
• Modbus
• OPC-UA
• S7

[Sebastian Rühl]

fixed with #1099