java - JAXB property bindings - why is this even needed -


i have following xsd (i post relevant part here command run against excerpt, too)

<?xml version="1.0"?> <xs:schema xmlns:xs="http://www.w3.org/2001/xmlschema" attributeformdefault="unqualified" elementformdefault="qualified">     <xs:complextype name="optiontype">         <xs:simplecontent>             <xs:extension base="xs:string">                 <xs:attribute type="xs:string" name="name" use="optional"/>                 <xs:attribute type="xs:string" name="value" use="optional"/>             </xs:extension>         </xs:simplecontent>     </xs:complextype>     <xs:complextype name="controllabletype">         <xs:simplecontent>             <xs:extension base="xs:string">                 <xs:attribute type="xs:float" name="value" use="optional"/>             </xs:extension>         </xs:simplecontent>     </xs:complextype> </xs:schema>

i run following command against it:

xjc src/main/resources/session.xsd -p org.myorg.mypackage -d src/main/java/org/myorg/mypackage

i following error:

[error] property "value" defined. use &lt;jaxb:property> resolve conflict. line 39 of jar:file:/usr/lib/jvm/java-8-openjdk-amd64/lib/tools.jar!/com/sun/xml/internal/xsom/impl/parser/datatypes.xsd  [error] following location relevant above error line 14 of file:/home/user/project/src/main/resources/session.xsd  [error] property "value" defined. use &lt;jaxb:property> resolve conflict. line 39 of jar:file:/usr/lib/jvm/java-8-openjdk-amd64/lib/tools.jar!/com/sun/xml/internal/xsom/impl/parser/datatypes.xsd  [error] following location relevant above error line 7 of file:/home/user/project/src/main/resources/session.xsd  failed parse schema.

i read bindings here:

symbol defined. use jaxb property resolve conflict

jaxb compiling issue - [error] property "any" defined

but why needed? isn't attribute qualified , unique xml element name combined attribute name?

like "optiontype.value" or "controllabletype.value"

the problem have complex type simple content , attribute value:

<xs:complextype name="controllabletype">     <xs:simplecontent>         <xs:extension base="xs:string">             <xs:attribute type="xs:float" name="value" use="optional"/>         </xs:extension>     </xs:simplecontent> </xs:complextype>

this allow like

<somelement value="1.5">one , half</somelement>

xjc tries create 2 properties:

  • one attribute value,
  • one simple content.

first property named value default because name of attribute.

second property named value default because default name simple content properties.

this gets collision.


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