How to ignore a type with XStream?

Question

Hello,

with XStream, how can I ignore the serialization of a defined Type (for instance, when serializing a GUI, i want to ignore all swing types)?

Or if i want to ignore all javax.* types?

Thanks in advance,
Burkhard

Answer 1

Hi,

you need to write a custom converter for the types you want to ignore.

For example, if you want to ignore the JLabels:

public class MyJLabelConverter implements Converter {

    @Override
    public void marshal(Object value, HierarchicalStreamWriter writer, MarshallingContext context) {
    }

    @Override
    public Object unmarshal(HierarchicalStreamReader reader, UnmarshallingContext context) {
        return null;
    }

    @Override
    public boolean canConvert(Class clazz) {
     return clazz.equals(JLabel.class);
    }
}

and register it with:

xstream.registerConverter(new MyJLabelConverter());