Generating Java classes out of XMLSchema.xsd using

Question

I'm using jaxb to generate java classes out of a xml schema. The schema imports XMLSchema.xsd and its content is used as an element in the document.

If I remove the import and the reference to "xsd:schema" respectively then the binding compiler generates successfully the classes. If I do not then it would produce the following errors, which are the same if I would try to generate Java classes from the XMLSchema.xsd only!

>  C:\Users\me>"%JAXB%/xjc" -extension -d tmp/uisocketdesc -p uis.jaxb uisocketdesc.xsd -b xml_binding_test.xml -b xml_binding_test_2.xml
-b xml_binding_test_3.xml
parsing a schema...
compiling a schema...

> [ERROR] A class/interface with the same name "uis.jaxb.ComplexType" is already in use. Use a class customization to resolve this conflict.
 line 612 of "http://www.w3.org/2001/XMLSchema.xsd"

> [ERROR] (Relevant to above error) another "ComplexType" is generated from here.
 line 440 of "http://www.w3.org/2001/XMLSchema.xsd"

> [ERROR] A class/interface with the same name "uis.jaxb.Attribute" is already in use. Use a class customization to resolve this conflict.
 line 364 of "http://www.w3.org/2001/XMLSchema.xsd"

> [ERROR] (Relevant to above error) another "Attribute" is generated from here.
 line 1020 of "http://www.w3.org/2001/XMLSchema.xsd"

> [ERROR] A class/interface with the same name "uis.jaxb.SimpleType" is already in use. Use a class customization to resolve this conflict.
 line 2278 of "http://www.w3.org/2001/XMLSchema.xsd"

> [ERROR] (Relevant to above error) another "SimpleType" is generated from here.
 line 2222 of "http://www.w3.org/2001/XMLSchema.xsd"

> [ERROR] A class/interface with the same name "uis.jaxb.Group" is already in use. Use a class customization to resolve this conflict.
 line 930 of "http://www.w3.org/2001/XMLSchema.xsd"

> [ERROR] (Relevant to above error) another "Group" is generated from here.
 line 727 of "http://www.w3.org/2001/XMLSchema.xsd"

> [ERROR] A class/interface with the same name "uis.jaxb.AttributeGroup" is already in use. Use a class customization to resolve this conflict.
 line 1062 of "http://www.w3.org/2001/XMLSchema.xsd"

> [ERROR] (Relevant to above error) another "AttributeGroup" is generated from here.
 line 1026 of "http://www.w3.org/2001/XMLSchema.xsd"

> [ERROR] A class/interface with the same name "uis.jaxb.Element" is already in use. Use a class customization to resolve this conflict.
 line 721 of "http://www.w3.org/2001/XMLSchema.xsd"

> [ERROR] (Relevant to above error) another "Element" is generated from here.
 line 647 of "http://www.w3.org/2001/XMLSchema.xsd"

> [ERROR] Two declarations cause a collision in the ObjectFactory class.
 line 1020 of "http://www.w3.org/2001/XMLSchema.xsd"

> [ERROR] (Related to above error) This is the other declaration.
 line 364 of "http://www.w3.org/2001/XMLSchema.xsd"

> [ERROR] Two declarations cause a collision in the ObjectFactory class.
 line 2278 of "http://www.w3.org/2001/XMLSchema.xsd"

> [ERROR] (Related to above error) This is the other declaration.
 line 2222 of "http://www.w3.org/2001/XMLSchema.xsd"

> [ERROR] Two declarations cause a collision in the ObjectFactory class.
 line 930 of "http://www.w3.org/2001/XMLSchema.xsd"

> [ERROR] (Related to above error) This is the other declaration.
 line 727 of "http://www.w3.org/2001/XMLSchema.xsd"

> [ERROR] Two declarations cause a collision in the ObjectFactory class.
 line 440 of "http://www.w3.org/2001/XMLSchema.xsd"

> [ERROR] (Related to above error) This is the other declaration.
 line 612 of "http://www.w3.org/2001/XMLSchema.xsd"

> [ERROR] Two declarations cause a collision in the ObjectFactory class.
 line 1026 of "http://www.w3.org/2001/XMLSchema.xsd"

> [ERROR] (Related to above error) This is the other declaration.
 line 1062 of "http://www.w3.org/2001/XMLSchema.xsd"

> [ERROR] Two declarations cause a collision in the ObjectFactory class.
 line 647 of "http://www.w3.org/2001/XMLSchema.xsd"

> [ERROR] (Related to above error) This is the other declaration.
 line 721 of "http://www.w3.org/2001/XMLSchema.xsd"

Failed to produce code.

Answer 1

I came across the same error and removed <generatePackage></generatePackage> entirely. This resolved my problem.

Answer 2

I tried following and it worked for me:

<jxb:bindings schemaLocation="ClaimActivity-ACORD.xsd">
    <jxb:schemaBindings>
        <jxb:package name="x.x.x.x" />
    </jxb:schemaBindings>
    <jxb:bindings node="//xsd:complexType[@name='ConstructionType']">
        <jxb:class name="AbstractConstructionType" />
    </jxb:bindings>
    <jxb:bindings node="//xsd:complexType[@name='ItemDefinitionType']">
        <jxb:class name="AbstractItemDefinitionType" />
    </jxb:bindings>
    <jxb:bindings node="//xsd:complexType[@name='LocationType']">
        <jxb:class name="AbstractLocationType" />
    </jxb:bindings>
    <jxb:bindings node="//xsd:complexType[@name='TaxFeeType']">
        <jxb:class name="AbstractTaxFeeType" />
    </jxb:bindings>
    <jxb:bindings node="//xsd:complexType[@name='DeductibleType']">
        <jxb:class name="AbstractDeductibleType" />
    </jxb:bindings>
    <jxb:bindings node="//xsd:complexType[@name='RegistrationType']">
        <jxb:class name="AbstractRegistrationType" />
    </jxb:bindings>
</jxb:bindings>

Answer 3

I experienced same issue when generating objects from .wsdl using cxf. Resolution for me is to use -autoNameResolution as error message suggests. Maven configuration :

         <wsdlOption>
                            <wsdl>${basedir}/test.wsdl</wsdl>
                            <extraargs>
                                <extraarg>-b</extraarg>     
                            <extraarg>http://www.w3.org/2001/XMLSchema.xsd</extraarg>
                                <extraarg>-autoNameResolution</extraarg>
                            </extraargs>
                            <packagenames>
                                <packagename>test.wsdl</packagename>
                            </packagenames>
                        </wsdlOption>

Answer 4

You can use xjc which comes with JDK1.6. Also you can try XML to Java, refer this article.

Answer 5

Another option would be to remove the -p option so the classes are generated in different packages

Answer 6

Fighting such stuff as well, for me it is case-sensitivity issue and the same name for element and attribute issue (thru inheritance sometimes). For the second problem I'm using external binding file that contains something like this:

<jaxb:bindings node="//xs:complexType[@name='AbstractGriddedSurfaceType']//xs:attribute[@name='rows']">
    <jaxb:property name="rowCount"/>
</jaxb:bindings>

For case-sensitivity issues you can use xjc argument -XautoNameResolution, maven version is <args><arg>-B-XautoNameResolution</arg></args>, but this doesn't work for wrapper elements, so for these you need to write jaxb customizations as mentioned above, ... and if you are unlucky like me :) you may need to use a local copy of an xsd and fix duplications manually.

Edit Found another solution for the case-sensitivity issue where renaming the element isn't enough:

<jaxb:bindings node=".//xs:element[@name='imageDatum'][@type='gml:ImageDatumPropertyType']">
    <jaxb:property name="imageDatumInst"/>
    <jaxb:factoryMethod name="imageDatumInst" />
</jaxb:bindings>

Good luck, hope this helps.