How to forbid some enum value in enum type to XML representation mapping?

Question

I use @XmlEnum and @XmlEnumValue for mapping enum to XML representation (WSDL file). I need to omit one of the enumeration values. So it won't be a part of the WSDL file.

I need to omit enum value NONE. Tried this but doesn't work.

@XmlEnum
public enum Title { 
   @XmlEnumValue("mrs") MRS,
   @XmlEnumValue("mrs") MR,
   NONE;
   ..
}

This is the generated WSDL file.

<xs:simpleType name="title">
  <xs:restriction base="xs:string">
    <xs:enumeration value="mrs"/>    
    <xs:enumeration value="mr"/>
    <xs:enumeration value="NONE"/> <!-- I need to get rid of this enum value -->
  </xs:restriction>
</xs:simpleType>

Answer 1

You should be able to use an XmlAdapter for this. Have it convert between your enum and an enum with the desired items.

import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.XmlAdapter;

public class TitleAdapter extends XmlAdapter<TitleAdapter.AdaptedTitle, Title>{

    @XmlType(name="title")
    public enum AdaptedTitle {
        @XmlEnumValue("mrs") MRS,
        @XmlEnumValue("mrs") MR
    }

    @Override
    public Title unmarshal(AdaptedTitle v) throws Exception {
        switch(v) {
        case MRS:
            return Title.MRS;
        case MR:
            return Title.MR;
        }
        return null;
    }

    @Override
    public AdaptedTitle marshal(Title v) throws Exception {
        switch(v) {
        case MRS:
            return AdaptedTitle.MRS;
        case MR:
            return AdaptedTitle.MR;
        }
        return null;
    }

}

Then change your Title enum to:

import javax.xml.bind.annotation.adapters.*;

@XmlJavaTypeAdapter(TitleAdapter.class)
public enum Title { 
   MRS,
   MR,
   NONE;
}