How to differenciate duplicate elements through jaxb bindings.xml

问题

I have to deal with an xsd schema to generate the java code through jaxb and there is two elements withe same name in one of the sequence. This is causing troubles and i have come to use bindings.xml to differrenciate both elements.

My problem is that i can not manage to pinpoint one single element for this purpose, it is targetting the element i want plus another element from another compleType.

    <?xml version="1.0" encoding="UTF-8"?> 
<xs:schema  
    xmlns="urn:IETF:metadata:2005:FLUTE:FDT"  
    xmlns:fl="urn:IETF:metadata:2005:FLUTE:FDT"  
    xmlns:xs="http://www.w3.org/2001/XMLSchema" 
    xmlns:mbms2005="urn:3GPP:metadata:2005:MBMS:FLUTE:FDT" 
    xmlns:mbms2007="urn:3GPP:metadata:2007:MBMS:FLUTE:FDT" 
    xmlns:mbms2008="urn:3GPP:metadata:2008:MBMS:FLUTE:FDT_ext" 
    xmlns:mbms2009="urn:3GPP:metadata:2009:MBMS:FLUTE:FDT_ext" 
    xmlns:mbms2012="urn:3GPP:metadata:2012:MBMS:FLUTE:FDT" 
    xmlns:sv="urn:3gpp:metadata:2009:MBMS:schemaVersion" 
    targetNamespace="urn:IETF:metadata:2005:FLUTE:FDT"  
    elementFormDefault="qualified" 
    version="2"> 
    <xs:import namespace="urn:3GPP:metadata:2005:MBMS:FLUTE:FDT" 
                schemaLocation="FLUTE-FDT-3GPP-2005-Extensions.xsd"/> 
    <xs:import namespace="urn:3GPP:metadata:2007:MBMS:FLUTE:FDT"  
                schemaLocation="FLUTE-FDT-3GPP-2007-Extensions.xsd"/> 
    <xs:import namespace="urn:3GPP:metadata:2008:MBMS:FLUTE:FDT_ext"  
                schemaLocation="FLUTE-FDT-3GPP-2008-Extensions.xsd"/> 
    <xs:import namespace="urn:3GPP:metadata:2009:MBMS:FLUTE:FDT_ext"  
                schemaLocation="FLUTE-FDT-3GPP-2009-Extensions.xsd"/> 
    <xs:import namespace="urn:3GPP:metadata:2012:MBMS:FLUTE:FDT"  
                schemaLocation="FLUTE-FDT-3GPP-2012-Extensions.xsd"/> 
    <xs:import namespace="urn:3gpp:metadata:2009:MBMS:schemaVersion"  
                schemaLocation="schema-version.xsd"/> 
    <xs:element name="FDT-Instance" type="FDT-InstanceType"/> 
    <xs:complexType name="FDT-InstanceType"> 
        <xs:sequence> 
            <xs:element name="File" type="FileType" maxOccurs="unbounded"/> 
            <xs:element ref="sv:schemaVersion"/>        
            <xs:element ref="mbms2012:Base-URL-1" minOccurs="0" maxOccurs="unbounded"/> 
            <xs:element ref="mbms2012:Base-URL-2" minOccurs="0" maxOccurs="unbounded"/>          
            <xs:element ref="sv:delimiter"/>         
            <xs:any namespace="##other" processContents="skip" minOccurs="0" maxOccurs="unbounded"/> 
            <xs:element name="Group" type="mbms2005:groupIdType" minOccurs="0" maxOccurs="unbounded"/> 
            <xs:element name="MBMS-Session-Identity-Expiry" type="mbms2005:MBMS-Session-Identity-Expiry-Type" minOccurs="0" maxOccurs="unbounded"/> 
        </xs:sequence> 
        <xs:attribute name="Expires" type="xs:string" use="required"/> 
        <xs:attribute name="Complete" type="xs:boolean" use="optional"/> 
        <xs:attribute name="Content-Type" type="xs:string" use="optional"/> 
        <xs:attribute name="Content-Encoding" type="xs:string" use="optional"/> 
        <xs:attribute name="FEC-OTI-FEC-Encoding-ID" type="xs:unsignedLong" use="optional"/> 
        <xs:attribute name="FEC-OTI-FEC-Instance-ID" type="xs:unsignedLong" use="optional"/> 
        <xs:attribute name="FEC-OTI-Maximum-Source-Block-Length" type="xs:unsignedLong" use="optional"/> 
        <xs:attribute name="FEC-OTI-Encoding-Symbol-Length" type="xs:unsignedLong" use="optional"/> 
        <xs:attribute name="FEC-OTI-Max-Number-of-Encoding-Symbols" type="xs:unsignedLong" use="optional"/> 
        <xs:attribute name="FEC-OTI-Scheme-Specific-Info" type="xs:base64Binary" use="optional"/> 
        <xs:attribute ref="mbms2008:FullFDT" use="optional" default="false"/> 
        <xs:anyAttribute processContents="skip"/> 
    </xs:complexType> 
    <xs:complexType name="FileType"> 
        <xs:sequence> 
            <xs:element ref="mbms2007:Cache-Control" minOccurs="0"/>
            <xs:element ref="sv:delimiter"/>        
            <xs:element ref="mbms2012:Alternate-Content-Location-1" minOccurs="0" maxOccurs="unbounded"/> 
            <xs:element ref="mbms2012:Alternate-Content-Location-2" minOccurs="0" maxOccurs="unbounded"/> 
            <xs:element ref="sv:delimiter"/>         
            <xs:any namespace="##other" processContents="skip" minOccurs="0" maxOccurs="unbounded"/> 
            <xs:element name="Group" type="mbms2005:groupIdType" minOccurs="0" maxOccurs="unbounded"/> 
            <xs:element name="MBMS-Session-Identity" type="mbms2005:MBMS-Session-Identity-Type" minOccurs="0" maxOccurs="unbounded"/> 
        </xs:sequence> 
        <xs:attribute name="Content-Location" type="xs:anyURI" use="required"/> 
        <xs:attribute name="TOI" type="xs:positiveInteger" use="required"/> 
        <xs:attribute name="Content-Length" type="xs:unsignedLong" use="optional"/> 
        <xs:attribute name="Transfer-Length" type="xs:unsignedLong" use="optional"/> 
        <xs:attribute name="Content-Type" type="xs:string" use="optional"/> 
        <xs:attribute name="Content-Encoding" type="xs:string" use="optional"/> 
        <xs:attribute name="Content-MD5" type="xs:base64Binary" use="optional"/> 
        <xs:attribute name="FEC-OTI-FEC-Encoding-ID" type="xs:unsignedLong" use="optional"/> 
        <xs:attribute name="FEC-OTI-FEC-Instance-ID" type="xs:unsignedLong" use="optional"/> 
        <xs:attribute name="FEC-OTI-Maximum-Source-Block-Length" type="xs:unsignedLong" use="optional"/> 
        <xs:attribute name="FEC-OTI-Encoding-Symbol-Length" type="xs:unsignedLong" use="optional"/> 
        <xs:attribute name="FEC-OTI-Max-Number-of-Encoding-Symbols" type="xs:unsignedLong" use="optional"/> 
        <xs:attribute name="FEC-OTI-Scheme-Specific-Info" type="xs:base64Binary" use="optional"/> 
        <xs:attribute ref="mbms2009:Decryption-KEY-URI" use="optional"/> 
        <xs:attribute ref="mbms2012:FEC-Redundancy-Level" use="optional"/> 
        <xs:anyAttribute processContents="skip"/> 
    </xs:complexType> 
</xs:schema>

Here is my bindings.xml

<jxb:bindings version="2.0"
xmlns:jxb="http://java.sun.com/xml/ns/jaxb"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xs="http://www.w3.org/2001/XMLSchema">
<jxb:bindings schemaLocation="FLUTE-FDT-3GPP-2005-Extensions.xsd" node="/xsd:schema">
    <jxb:bindings node="//xsd:complexType[@name='MBMS-Session-Identity-Expiry-Type']">
        <jxb:bindings node=".//xsd:attribute[@name='value']">
            <jxb:property name="requiredValue"/>
        </jxb:bindings>
    </jxb:bindings>
</jxb:bindings>
<jxb:bindings schemaLocation="mbms-flute-release11.xsd" node="/xs:schema">
    <jxb:bindings node="//xs:complexType[@name='FileType']">
        <jxb:bindings multiple="true" node="//xs:element[2]">
            <jxb:property name="delimiter1"/>
        </jxb:bindings>
    </jxb:bindings>
</jxb:bindings>

As a result, the first delimiter element is correctly renamed to delimiter1, but the schemaVersion element is also renamed to delimiter1!

Any suggestion on what is wrong?

EDIT 1

After using @ref as suggested by my bindings.xml looks like this :

<jxb:bindings version="2.0"
    xmlns:jxb="http://java.sun.com/xml/ns/jaxb"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema"
    xmlns:xs="http://www.w3.org/2001/XMLSchema">
    <jxb:bindings schemaLocation="FLUTE-FDT-3GPP-2005-Extensions.xsd" node="/xsd:schema">
        <jxb:bindings node="//xsd:complexType[@name='MBMS-Session-Identity-Expiry-Type']">
            <jxb:bindings node=".//xsd:attribute[@name='value']">
                <jxb:property name="requiredValue"/>
            </jxb:bindings>
        </jxb:bindings>
    </jxb:bindings>
    <jxb:bindings schemaLocation="mbms-flute-release11.xsd" node="/xs:schema">
        <jxb:bindings node="//xs:complexType[@name='FileType']">
            <jxb:bindings multiple="true" node="//xs:element[@ref='sv:delimiter'][1]">
                <jxb:property name="delimiter1"/>
            </jxb:bindings> 
            <jxb:bindings node="//xs:element[@ref='sv:delimiter'][2]">
                <jxb:property name="delimiter2"/>
            </jxb:bindings>
        </jxb:bindings>
    </jxb:bindings>
</jxb:bindings>

Now it renames all occurernces of sv:delimiter (3 in the document) instead of only those within FileType complexe type. It is better than before but i'd like to be able to only rename selected elements not all if possible.

Solution

Thanks to Xstian, this is the solution that is working :

<jxb:bindings version="2.0"
    xmlns:jxb="http://java.sun.com/xml/ns/jaxb"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema"
    xmlns:xs="http://www.w3.org/2001/XMLSchema">
    <jxb:bindings schemaLocation="FLUTE-FDT-3GPP-2005-Extensions.xsd" node="/xsd:schema">
        <jxb:bindings node="//xsd:complexType[@name='MBMS-Session-Identity-Expiry-Type']">
            <jxb:bindings node=".//xsd:attribute[@name='value']">
                <jxb:property name="requiredValue"/>
            </jxb:bindings>
        </jxb:bindings>
    </jxb:bindings>
    <jxb:bindings schemaLocation="mbms-flute-release11.xsd" node="/xs:schema">
            <jxb:bindings node="//xs:complexType[@name='FileType']//xs:element[@ref='sv:delimiter'][1]">
                <jxb:property name="delimiter1"/>
            </jxb:bindings> 
            <jxb:bindings node="//xs:complexType[@name='FileType']//xs:element[@ref='sv:delimiter'][2]">
                <jxb:property name="delimiter2"/>
            </jxb:bindings> 
    </jxb:bindings>
</jxb:bindings>

Thanks

回答1:

Try to use for example

<jxb:bindings schemaLocation="mbms-flute-release11.xsd" node="/xs:schema">
    <jxb:bindings node="//xs:complexType[@name='FileType']">
        <jxb:bindings node="//xs:element[@ref='mbms2012:Alternate-Content-Location-1']">
            <jxb:property name="delimiter1"/>
        </jxb:bindings>
    </jxb:bindings>
</jxb:bindings>

or

<jxb:bindings schemaLocation="mbms-flute-release11.xsd" node="/xs:schema">
    <jxb:bindings node="//xs:complexType[@name='FileType']//xs:element[@ref='mbms2012:Alternate-Content-Location-1']">
          <jxb:property name="delimiter1"/>
    </jxb:bindings>
</jxb:bindings>

来源：https://stackoverflow.com/questions/35196342/how-to-differenciate-duplicate-elements-through-jaxb-bindings-xml