How to solve RuntimeExcepetion --> All fields are either transient/static.?

[chenzhe...@gmail.com]

I want to serialize generated AST information from Eclipse-JDT parser. 

Exception in thread "main" java.lang.RuntimeException: Not able to map any fields from class net.core.dom.NodeEventHandler.  All fields are either transient/static.

at com.dyuproject.protostuff.runtime.RuntimeSchema.createFrom(RuntimeSchema.java:245)

at com.dyuproject.protostuff.runtime.RuntimeSchema.createFrom(RuntimeSchema.java:156)

at com.dyuproject.protostuff.runtime.IdStrategy.newSchema(IdStrategy.java:129)

at com.dyuproject.protostuff.runtime.DefaultIdStrategy$Lazy.getSchema(DefaultIdStrategy.java:630)

at com.dyuproject.protostuff.runtime.RuntimeMessageField.getSchema(RuntimeMessageField.java:52)

at com.dyuproject.protostuff.runtime.RuntimeUnsafeFieldFactory$13$1.writeTo(RuntimeUnsafeFieldFactory.java:793)

at com.dyuproject.protostuff.runtime.MappedSchema.writeTo(MappedSchema.java:203)

at com.dyuproject.protostuff.ProtostuffOutput.writeObject(ProtostuffOutput.java:373)

at com.dyuproject.protostuff.runtime.RuntimeUnsafeFieldFactory$13$1.writeTo(RuntimeUnsafeFieldFactory.java:793)

at com.dyuproject.protostuff.runtime.MappedSchema.writeTo(MappedSchema.java:203)

at com.dyuproject.protostuff.ProtostuffIOUtil.toByteArray(ProtostuffIOUtil.java:183)

at net.ProtostuffTest.decode(ProtostuffTest.java:16)

at net.ProtostuffTest.main(ProtostuffTest.java:31)

However, the NodeEventHandler class is a normal class full of methods that do nothing.

[David Yu]

Register that class as a delegate.

See https://protostuff.github.io/docs/protostuff-runtime/delegate/

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[chenzhe...@gmail.com]

In order to ignore this warning, I just add some general fields for this class and it shows me that exception below.

Exception in thread "main" java.lang.StackOverflowError

at com.dyuproject.protostuff.runtime.DefaultIdStrategy.writeArrayIdTo(DefaultIdStrategy.java:477)

at com.dyuproject.protostuff.runtime.ObjectSchema.writeObjectTo(ObjectSchema.java:708)

at com.dyuproject.protostuff.runtime.IdStrategy$8.writeTo(IdStrategy.java:452)

AST class is a top class which has a lot of children classes. I am not sure that is it the reason of StackOverFlow because of too big class hierarchy.