[milo-dev] decoding JoiningProcessDataType

[Francesco Viscomi <fviscomi@xxxxxxxxx>]

Hi all, kevin,

I do not know if I find a bug on eclipse milo or i do so mistake (likely the second one);

I'm going to decode the following:

In more specific:

There is a structure that is a subType of JoiningProcessDataType we have called it QualityProcessMetaDataType that has added the field ExtendedMetaData;

In attached the two coded written one for JoiningProcessDataType and for QualityProcessMetaDataType, but when i make I call I get:

18:21:21.012 [milo-shared-thread-pool-3] ERROR o.e.m.e.m.opcua.ModeledNamespace - Uncaught Throwable invoking method handler for methodId=NodeId{ns=8, id=96}.
java.lang.StackOverflowError: null
at java.base/sun.nio.cs.UTF_8$Encoder.encodeArrayLoop(UTF_8.java:456)
at java.base/sun.nio.cs.UTF_8$Encoder.encodeLoop(UTF_8.java:564)
at java.base/java.nio.charset.CharsetEncoder.encode(CharsetEncoder.java:585)
at java.base/sun.nio.cs.StreamEncoder.implWrite(StreamEncoder.java:293)
at java.base/sun.nio.cs.StreamEncoder.implWrite(StreamEncoder.java:282)
at java.base/sun.nio.cs.StreamEncoder.write(StreamEncoder.java:132)
at java.base/java.io.OutputStreamWriter.write(OutputStreamWriter.java:205)
at java.base/java.io.BufferedWriter.flushBuffer(BufferedWriter.java:120)
at java.base/java.io.PrintStream.writeln(PrintStream.java:722)
at java.base/java.io.PrintStream.println(PrintStream.java:1028)
at org.eclipse.milo.opcua.stack.core.serialization.OpcUaBinaryStreamDecoder.readStruct(OpcUaBinaryStreamDecoder.java:716)
at org.eclipse.milo.opcua.stack.core.types.structured.JoiningProcessDataType$Codec.decode(JoiningProcessDataType.java:69)
at org.eclipse.milo.opcua.stack.core.types.structured.JoiningProcessDataType$Codec.decode(JoiningProcessDataType.java:1)
at org.eclipse.milo.opcua.stack.core.serialization.codecs.GenericDataTypeCodec$GenericBinaryDataTypeCodec.decode(GenericDataTypeCodec.java:47)
at org.eclipse.milo.opcua.stack.core.serialization.OpcUaBinaryStreamDecoder.readStruct(OpcUaBinaryStreamDecoder.java:704)
at org.eclipse.milo.opcua.stack.core.serialization.OpcUaBinaryStreamDecoder.lambda$0(OpcUaBinaryStreamDecoder.java:719)
at java.base/java.util.Optional.map(Optional.java:260)
at org.eclipse.milo.opcua.stack.core.serialization.OpcUaBinaryStreamDecoder.readStruct(OpcUaBinaryStreamDecoder.java:719)
at org.eclipse.milo.opcua.stack.core.types.structured.JoiningProcessDataType$Codec.decode(JoiningProcessDataType.java:69)
at org.eclipse.milo.opcua.stack.core.types.structured.JoiningProcessDataType$Codec.decode(JoiningProcessDataType.java:1)
at org.eclipse.milo.opcua.stack.core.serialization.codecs.GenericDataTypeCodec$GenericBinaryDataTypeCodec.decode(GenericDataTypeCodec.java:47)
at org.eclipse.milo.opcua.stack.core.serialization.OpcUaBinaryStreamDecoder.readStruct(OpcUaBinaryStreamDecoder.java:704)
at org.eclipse.milo.opcua.stack.core.serialization.OpcUaBinaryStreamDecoder.lambda$0(OpcUaBinaryStreamDecoder.java:719)
at java.base/java.util.Optional.map(Optional.java:260)
at org.eclipse.milo.opcua.stack.core.serialization.OpcUaBinaryStreamDecoder.readStruct(OpcUaBinaryStreamDecoder.java:719)
at org.eclipse.milo.opcua.stack.core.types.structured.JoiningProcessDataType$Codec.decode(JoiningProcessDataType.java:69)
at org.eclipse.milo.opcua.stack.core.types.structured.JoiningProcessDataType$Codec.decode(JoiningProcessDataType.java:1)
at org.eclipse.milo.opcua.stack.core.serialization.codecs.GenericDataTypeCodec$GenericBinaryDataTypeCodec.decode(GenericDataTypeCodec.java:47)
at org.eclipse.milo.opcua.stack.core.serialization.OpcUaBinaryStreamDecoder.readStruct(OpcUaBinaryStreamDecoder.java:704)
at org.eclipse.milo.opcua.stack.core.serialization.OpcUaBinaryStreamDecoder.lambda$0(OpcUaBinaryStreamDecoder.java:719)
at java.base/java.util.Optional.map(Optional.java:260)
at org.eclipse.milo.opcua.stack.core.serialization.OpcUaBinaryStreamDecoder.readStruct(OpcUaBinaryStreamDecoder.java:719)
at org.eclipse.milo.opcua.stack.core.types.structured.JoiningProcessDataType$Codec.decode(JoiningProcessDataType.java:69)
at org.eclipse.milo.opcua.stack.core.types.structured.JoiningProcessDataType$Codec.decode(JoiningProcessDataType.java:1)
at org.eclipse.milo.opcua.stack.core.serialization.codecs.GenericDataTypeCodec$GenericBinaryDataTypeCodec.decode(GenericDataTypeCodec.java:47)
at org.eclipse.milo.opcua.stack.core.serialization.OpcUaBinaryStreamDecoder.readStruct(OpcUaBinaryStreamDecoder.java:704)
at org.eclipse.milo.opcua.stack.core.serialization.OpcUaBinaryStreamDecoder.lambda$0(OpcUaBinaryStreamDecoder.java:719)
at java.base/java.util.Optional.map(Optional.java:260)
at org.eclipse.milo.opcua.stack.core.serialization.OpcUaBinaryStreamDecoder.readStruct(OpcUaBinaryStreamDecoder.java:719)
at org.eclipse.milo.opcua.stack.core.types.structured.JoiningProcessDataType$Codec.decode(JoiningProcessDataType.java:69)
at org.eclipse.milo.opcua.stack.core.types.structured.JoiningProcessDataType$Codec.decode(JoiningProcessDataType.java:1)
at org.eclipse.milo.opcua.stack.core.serialization.codecs.GenericDataTypeCodec$GenericBinaryDataTypeCodec.decode(GenericDataTypeCodec.java:47)
at org.eclipse.milo.opcua.stack.core.serialization.OpcUaBinaryStreamDecoder.readStruct(OpcUaBinaryStreamDecoder.java:704)
at org.eclipse.milo.opcua.stack.core.serialization.OpcUaBinaryStreamDecoder.lambda$0(OpcUaBinaryStreamDecoder.java:719)
at java.base/java.util.Optional.map(Optional.java:260)

looking at code it seems that the method 

public Object readStruct(String field, NodeId dataTypeId)

call the method 

public Object readStruct(String field, ExpandedNodeId dataTypeId)

and in turns call again 

public Object readStruct(String field, NodeId dataTypeId)

I'm not able to understand why that happen!!!!

thanks

--

Ing. Viscomi Francesco

Attachment: QualityProcessMetaDataType.java
Description: Binary data

Attachment: JoiningProcessDataType.java
Description: Binary data