JAXB tromps schema DataType definition

Question

This is my first attempt at working w/ XML Schema (and XML in general) so please pardon me if I am not providing enough information. I am using a jwsdp1.3 out of the box w/ J2SDK_1.4.2 for this work.
I'm trying to create a set of bindings using the HDF5-File.xsd Schema
http://hdf.ncsa.uiuc.edu/DTDs/HDF5File http://hdf.ncsa.uiuc.edu/DTDs/HDF5-File.xsd
I get the following error using ant compile:
compile:
[echo] Compiling the schema...
[xjc] Compiling file:<path>/jwstutorial13/examples/jaxb/HDF5/HDF5-File.xsd
[xjc] [ERROR] A class/interface with the same name "HDF5.File.DataType" is already in use.
[xjc] line 117 of HDF5-File.xsd
[xjc] [ERROR] (Relevant to above error) another one is generated from here.
[xjc] line 130 of HDF5-File.xsd
The offending lines from the schema look like this:
116     <xs:element name="Data">
117          <xs:complexType>
118               <xs:choice>
119                    <xs:element ref="hdf5:NativeHDF5"/>
120                    <xs:element ref="hdf5:DataFromFile"/>
121                    <xs:element ref="hdf5:NoData"/>
122               </xs:choice>
123          </xs:complexType>
124     </xs:element>
125     <xs:element name="DataFromFile" type="xs:string">
126          <xs:annotation>
127               <xs:documentation>Format of the data in this element is not defined.</xs:documentation>
128          </xs:annotation>
129     </xs:element>
130     <xs:element name="DataType">
131          <xs:complexType>
132               <xs:choice>
133                    <xs:element ref="hdf5:AtomicType"/>
134                    <xs:element ref="hdf5:CompoundType"/>
135                    <xs:element ref="hdf5:VLType"/>
136                    <xs:element ref="hdf5:ArrayType"/>
137               </xs:choice>
138          </xs:complexType>
139     </xs:element>
I noticed when I renamed DataType to DatumType in the xsd then class-bindings are created in an appropriate manner. It seems that JAXB or some underlying mechanism is dirtying up the namespace by creating a DataType class from the 'Data' type (or element name) and not differentiating the xsd's 'DataType' element name from the 'DataType' classes created for the xsd 'Data' element name.
Is there a problem with my name space definition? See Below
<xs:schema targetNamespace="http://hdf.ncsa.uiuc.edu/DTDs/HDF5-File" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:hdf5="http://hdf.ncsa.uiuc.edu/DTDs/HDF5-File" elementFormDefault="unqualified" attributeFormDefault="unqualified">
I cannot change the schema as it is not mine, are there any other solutions to this problem?
thanks in advance

Answer 1

I think the problem is that you are using anonymous types, and the JAXB compiler adds Type to the end of each one. Make them not anonymous to give them any name you like.
See:
http://www.onjava.com/lpt/a/4446