JAXB enumeration with numeric values

Question

I want to restrict input values like this

Answer 1

Yes. You could define the enum yourself instead of having XJC generate it. Then you could instruct XJC to use that enum. You'll need an adapter class, though.

import acme.MyEnum;

public class MyEnumadapter {

    public static MyEnum unmarshal(final String value) {
        if(value == null)
            return null;
        //use some method to identify the enum by the value and return
    }

    public static String marshal(final MyEnum value) {
        if (value == null)
            return null;
        //use some method to get the value for the enum
    }

}

Either in a bindings file or embedded in the schema, customize the bindings like this:

MyEnumAdapter is in the default package here, so make sure you use the fully qualified names when doing this yourself.