JAXB Unmarshaller not unlocking after failure #3238
Description
Hi,
In Windows I am reading a file that "should" contain XML using @InboundChannelAdapter FileReadingMesageSource and passing on to @Transformer UnmarshallingTransformer.
If the un-marshall works, the correct object is forwarded. When the XML is invalid or not the file didn't contain XML a MessageTransformerException is forwarded.
When the un-marshall is successful, the incoming file is un-locked and I can remove it from the incoming directory. However, when I get a MessageTransformerException the file's lock is not released. When I try to move it get java.nio.file.FileSystemException: The process cannot access the file because it is being used by another process
In the FileReadingMessageSource I have tried without setLocker, setLocker with NIOFileLocker and an implementation of FileLocker which creates an additional file with a .locked extension. None of these solutions work.
I am using the following to Transform;
@Bean
public Jaxb2Marshaller unmarshaller() {
Jaxb2Marshaller x = new Jaxb2Marshaller();
x.unmarshaller(MyClass.class);
return x;
}
@Bean
@Transformer
public UnmarshallingTranformer umt() {
return new UnmarshallingTransformer(unmarshaller());
}
How do I cause the lock to be released?
Shouldn't the transformer somehow share/re-use the lock of the original file reader? It seems as if it is using its own locking and not releasing after failure.