如何在生成的JAXB类中构造XSD以使其具有原始包装而不是原始类型？

Question

I have following attribute in my XSD:

<xs:attribute name="fromFraction" type="xs:float" use="optional" default="0.0"/>

I generate class from this XSD and attribute is created as float , and then I can't marshall XML without this attribute from this class (as far as I understand, in that case it will always have some value which will be marshalled).

How can I change the XSD to create a Float type during binding , so I can have null in this field (so it could be omitted during marshalling)?

Or maybe there is a better way to remove this attribute from resulting XML when it isn't present?

Answer 1

According to this: http://reast.net/2009/08/jaxb-generating-primitive-type-getters/ and its reference: http://docs.oracle.com/cd/E17802_01/webservices/webservices/docs/1.5/jaxb/vendorCustomizations.html#serializable

you should add this to your XSD:

<xs:annotation>
   <xs:appinfo>
      <jaxb:globalBindings>
          <xjc:serializable uid="12343"/>
      </jaxb:globalBindings>
   </xs:appinfo>
</xs:annotation>

Answer 2

I had following line in binding.xjb file which I used to generated classes:

<jxb:globalBindings optionalProperty="primitive"/>

When I removed it, generated classes contain proper primitive-wrappers, just as I wanted.