JAXB problem generating java classes

Question

I'm doing some integration and have received a schema from the vendor the other day. When I try to generate java classes with the jaxb compiler I get this output
parsing a schema...
[ERROR] Property "Value" is already defined.
  line 14 of jar:file:/C:/win32app/Java/jdk6/lib/tools.jar!/com/sun/xml/internal/xsom/impl/parser/datatypes.xsd
[ERROR] The following location is relevant to the above error
  line 384 of file:/C:/code/sca-ecr.xsd
Failed to parse a schema.
    <xsd:complexType name="options">
        <xsd:sequence>
            <xsd:element name="option" maxOccurs="unbounded">
                <xsd:complexType>
                    <xsd:simpleContent>
                        <xsd:extension base="xsd:string">
(Line 384)                  <xsd:attribute name="value" type="xsd:string"/>
                        </xsd:extension>
                    </xsd:simpleContent>
                </xsd:complexType>
            </xsd:element>
        </xsd:sequence>
    </xsd:complexType>So, googling about this I came across these to articles that almost describes my problem.
http://weblogs.java.net/blog/kohsuke/archive/2005/05/compiling_mathm_1.html
https://jaxb.dev.java.net/guide/Dealing_with_errors.htmlAdding the this code did not help. Downloading JAXB 2.1.4 did not help, adding the -extension parameter still same result.
        <xsd:annotation>
          <xsd:appinfo>           
            <jaxb:property name="someAttribute" />
          </xsd:appinfo>
        </xsd:annotation>      Why is jaxb failing ? Could it be that and attribute is not allowed to be called "value" ?
Any answers will do
regards abq

Answer 1

Well, after hours of digging I found a solution which actually was right in front of me the whole time.
This is how I edited the schema.
    <xsd:complexType name="options">
        <xsd:sequence>
            <xsd:element name="option" maxOccurs="unbounded" >
                <xsd:complexType>
                    <xsd:simpleContent>
                        <xsd:extension base="xsd:string">
                           <xsd:attribute name="value" type="xsd:string" >
                              <xsd:annotation><xsd:appinfo>
                                <jaxb:property name="realValue" />
                              </xsd:appinfo></xsd:annotation>
                             </xsd:attribute>
                        </xsd:extension>
                    </xsd:simpleContent>
                </xsd:complexType>
            </xsd:element>
        </xsd:sequence>
    </xsd:complexType>Before, I placed the <xsd:annotation> tag efter the first line but inside the <xsd:attribute> made much better if you would like it to work.
When marshling an @XmlRoot object will produce valid xml code. So even though that the server have a different xml schema, they will be able to talk to each other.
abq