How does JAXB promote XMLStreamReader?

Question

I am using JAXB to untie objects from very large XML files using XMLStreamReader.

If the XML elements that I am delimiting are separated (using a new line or even a single space), this works fine.

If the XML elements that I unmounted do not have spaces between them, I lose every other element - the XML reader seems to absorb the element after it gets unmarshalled.

A source for a simplified example that demonstrates this is at https://gist.github.com/dalelane/88df784c3cb74b214d5c

Interesting bits are:

XMLStreamReader reader = XMLInputFactory.newInstance().createXMLStreamReader(inputStream);
JAXBContext context = JAXBContext.newInstance(MyJAXBClass.class);
Unmarshaller unmarshaller = context.createUnmarshaller();

boolean running = true;
while (running){
    switch (reader.next()){
        case XMLStreamConstants.START_ELEMENT:
            if (reader.getLocalName().equals("myunmarshallobjname")){
                JAXBElement<MyJAXBClass> unmarshalledObj = unmarshaller.unmarshal(reader, MyJAXBClass.class);
                MyJAXBClass item = unmarshalledObj.getValue();
            }
            break;
        case XMLStreamConstants.END_DOCUMENT:
            reader.close();
            running = false;
            break;
    }
}

Every time a thread reader gets to the beginning of an element, I pass it to unmarshaller to unmount this fragment.

It works if I have XML with:

<myunmarshallobjname key="one"></myunmarshallobjname> <myunmarshallobjname key="two"></myunmarshallobjname>

, :

<myunmarshallobjname key="one"></myunmarshallobjname><myunmarshallobjname key="two"></myunmarshallobjname>

? ?

Answer 1

, . XMLStreamReader endElement, next() , startElement .