JAXB: How to change XJC-generated classes names when attr type is specified in XSD?

Question

I'm a beginner to JAXB and I'm having annoying issues when generating Java classes with xjc. I am provided with a XSD like this:

<xs:element name="item" type="itemType"/>   ...    <xs:complexType name="itemType">     <xs:attribute name="id" type="xs:string" use="required">     ...      </xs:complexType> 

and xjc is generating a class called ItemType.java, but I want the name to be Item.java. That is, I want the generated classes as if the XSD was like this:

<xs:element name="item">     <xs:complexType>     <xs:attribute name="id" type="xs:string" use="required">         ...     </xs:complexType> </xs:element> 

There won't be any reuse of itemType on any other element, it's just the people that constructs the XSD likes it this way. I guess there may be a way to do it with custom bindings but I still haven't found how.

Any help?

Thanks, Miguel

Answer 1

JAXB provides two ways to accomplish this:

1. Inline Schema Anntotations

You can use JAXB schema annotations to control the class names.

<xs:schema          xmlns:xs="http://www.w3.org/2001/XMLSchema"         xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"         jaxb:version="2.1">      <xs:complexType name="itemType">         <xs:annotation>             <xs:appinfo>                 <jaxb:class name="Item"/>             </xs:appinfo>         </xs:annotation>         <xs:attribute name="id" type="xs:string" use="required"/>     </xs:complexType>  </xs:schema> 

2. External Binding File

This customization can also be done via and external binding file:

<jxb:bindings      xmlns:xs="http://www.w3.org/2001/XMLSchema"     xmlns:jxb="http://java.sun.com/xml/ns/jaxb"     version="2.1">      <jxb:bindings schemaLocation="your-schema.xsd">             <jxb:bindings node="//xs:complexType[@name='itemType']">                 <jxb:class name="Item"/>             </jxb:bindings>     </jxb:bindings>  </jxb:bindings> 

The xjc command line would be:

xjc -d out -b binding.xml your-schema.xsd 

Answer 2

Well, I finally found how to do it. My external binding file is:

<?xml version="1.0"?> <jxb:bindings version="1.0"               xmlns:jxb="http://java.sun.com/xml/ns/jaxb"               xmlns:xs="http://www.w3.org/2001/XMLSchema"               xmlns:xjc="http://java.sun.com/xml/ns/jaxb/xjc"               jxb:extensionBindingPrefixes="xjc">    <jxb:globalBindings>                   <xjc:simple/>   </jxb:globalBindings>  </jxb:bindings> 

and xjc command must be executed with -extension option.

I found the solution in this page:

http://weblogs.java.net/blog/kohsuke/archive/2006/03/why_does_jaxb_p.html (EDIT: obsolete link)

https://community.oracle.com/blogs/kohsuke/2006/03/03/why-does-jaxb-put-xmlrootelement-sometimes-not-always (new link)

Regards, Miguel