Java EE (Java Enterprise Edition) General Discussion

Hello,

I am using JAXB to generate code for some schemas created by a different group in my project, but I get an error that I kind of understand but don't know exactly how to resolve.

This is a pared-down version of the schema holding only the offending pieces:

MainSchema.xsd
---

<?xml version="1.0" encoding="utf-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
           xmlns:ns_a="DATASET_A"
           xmlns:ns_b="DATASET_B"
           xmlns:ns_c="DATASET_C"
           xmlns:ns_d="DATASET_D"
           xmlns:ns_e="DATASET_E"
           xmlns:ns_f="DATASET_F">

   <xs:include schemaLocation="BASIC_TYPES.XSD" />
   
   <!-- -->
   <xs:import namespace="DATASET_A" schemaLocation="DATASET_A.xsd"/>
   <xs:import namespace="DATASET_B" schemaLocation="DATASET_B.xsd"/>
   <xs:import namespace="DATASET_C" schemaLocation="DATASET_C.xsd"/>
   <xs:import namespace="DATASET_D" schemaLocation="DATASET_D.xsd"/>
   <xs:import namespace="DATASET_E" schemaLocation="DATASET_E.xsd"/>
   <xs:import namespace="DATASET_F" schemaLocation="DATASET_F.xsd"/>
   

   <xs:complexType name="ReturnGetDataStatusType">
      <xs:sequence>
         <xs:element name="DATA_LIST">
            <xs:complexType>
               <xs:sequence maxOccurs="unbounded">
                  <xs:choice>
                     <xs:group ref="ns_a:ReturnGetDataItemType" minOccurs="0" maxOccurs="unbounded"/>
                     <xs:group ref="ns_b:ReturnGetDataItemType" minOccurs="0" maxOccurs="unbounded"/>
                     <xs:group ref="ns_c:ReturnGetDataItemType" minOccurs="0" maxOccurs="unbounded"/>
                     <xs:group ref="ns_d:ReturnGetDataItemType" minOccurs="0" maxOccurs="unbounded"/>
                     <xs:group ref="ns_e:ReturnGetDataItemType" minOccurs="0" maxOccurs="unbounded"/>
                     <xs:group ref="ns_f:ReturnGetDataItemType" minOccurs="0" maxOccurs="unbounded"/>
                  </xs:choice>
               </xs:sequence>
            </xs:complexType>
         </xs:element>
      </xs:sequence>
   </xs:complexType>



   <!--   -->

   <xs:complexType name="FileDataType">
      <xs:sequence>
         <xs:element name="DATA_LIST">
            <xs:complexType>
               <xs:choice>
                  <xs:group ref="ns_a:ReturnGetDataItemType" minOccurs="0" maxOccurs="unbounded"/>
                  <xs:group ref="ns_b:ReturnGetDataItemType" minOccurs="0" maxOccurs="unbounded"/>
                  <xs:group ref="ns_c:ReturnGetDataItemType" minOccurs="0" maxOccurs="unbounded"/>
                  <xs:group ref="ns_d:ReturnGetDataItemType" minOccurs="0" maxOccurs="unbounded"/>
                  <xs:group ref="ns_e:ReturnGetDataItemType" minOccurs="0" maxOccurs="unbounded"/>
                  <xs:group ref="ns_f:ReturnGetDataItemType" minOccurs="0" maxOccurs="unbounded"/>
               </xs:choice>
            </xs:complexType>
         </xs:element>
      </xs:sequence>
   </xs:complexType>


   <xs:element name="RETURN_GET_DATA" type="ReturnGetDataStatusType"/>
   <xs:element name="FILE_DATA" type="FileDataType"/>
</xs:schema>

---

When I try to compile this schema and their underlying schemas, I get this error repeated for each "group" attribute of the FileDataType:

C:\dir\temp\fake_DataStore>xjc -d output   -p com.company.stuff   *.xsd *.XSD  | more
parsing a schema...
[ERROR] Property "ReturnGetDataItemType" is already defined. Use <jaxb:property> to resolve this conflict.
  line 49 of file:/C:/dir/temp/fake_DataStore/MainSchema.xsd

[ERROR] The following location is relevant to the above error
  line 50 of file:/C:/dir/temp/fake_DataStore/MainSchema.xsd

[ERROR] Property "ReturnGetDataItemType" is already defined. Use <jaxb:property> to resolve this conflict.
  line 50 of file:/C:/dir/temp/fake_DataStore/MainSchema.xsd

[ERROR] The following location is relevant to the above error
  line 51 of file:/C:/dir/temp/fake_DataStore/MainSchema.xsd

[ERROR] Property "ReturnGetDataItemType" is already defined. Use <jaxb:property> to resolve this conflict.
  line 51 of file:/C:/dir/temp/fake_DataStore/MainSchema.xsd

[ERROR] The following location is relevant to the above error
  line 52 of file:/C:/dir/temp/fake_DataStore/MainSchema.xsd

[ERROR] Property "ReturnGetDataItemType" is already defined. Use <jaxb:property> to resolve this conflict.
  line 52 of file:/C:/dir/temp/fake_DataStore/MainSchema.xsd

[ERROR] The following location is relevant to the above error
  line 53 of file:/C:/dir/temp/fake_DataStore/MainSchema.xsd

[ERROR] Property "ReturnGetDataItemType" is already defined. Use <jaxb:property> to resolve this conflict.
  line 53 of file:/C:/dir/temp/fake_DataStore/MainSchema.xsd

[ERROR] The following location is relevant to the above error
  line 54 of file:/C:/dir/temp/fake_DataStore/MainSchema.xsd

Failed to parse a schema.

---

It clearly has a problem with using the same group references in two different complexTypes, but I don't know how to use jaxb:property to resolve it.
Do I rename this ReturnGetDataItemType differently in the FileDataType complexType? If so, how?

Thank you for reading. Please let me know if you have any questions.

Edited by: jaylogan on Mar 18, 2010 6:49 PM