From: Gary Gregory <ggregory_at_seagullsw.com>
Date: Mon, 30 Jun 2003 23:54:27 -0400

Hello all,

I am wondering if I am missing something in my XSD. I am getting null values
out of attributes that have default values defined. I have an abstract
complex type which defines 2 optional attributes:

    <xs:simpleType name="endian">
        <xs:restriction base="xs:string">
            <xs:enumeration value="big"/>
            <xs:enumeration value="little"/>
        </xs:restriction>
    </xs:simpleType>
    <xs:complexType name="abstractTargetMachineProfile" abstract="true">
        <xs:annotation>
            <xs:documentation>Defines the target server machine
profile.</xs:documentation>
        </xs:annotation>
        <xs:attribute name="name" type="xs:string" use="optional"/>
        <xs:attribute name="endian" type="cics:endian" use="optional"/>
    </xs:complexType>

Then I have two types derived by restriction. This one is the problem:

    <xs:complexType name="intelMachineProfile">
        <xs:complexContent>
            <xs:restriction base="cics:abstractTargetMachineProfile">
                <xs:attribute name="name" type="xs:string" use="optional"
default="Intel"/>
                <xs:attribute name="endian" type="cics:endian"
use="optional" default="little"/>
            </xs:restriction>
        </xs:complexContent>
    </xs:complexType>

When I parse XML like:

<intelMachineProfile/>

I'd like the JAXB object to give me "Intel" and "little" for the attributes,
it gives me nulls. I am stuck.

Here are some more details:

    <xs:group name="targetMachineProfile">
        <!-- JAXB 1.0.1 does not support substitution groups. Redo when it
does. -->
        <xs:choice>
            <xs:element name="targetMachineProfile"
type="cics:targetMachineProfile"/>
            <xs:element name="intelTargetMachineProfile"
type="cics:intelMachineProfile"/>
        </xs:choice>
    </xs:group>
    <xs:simpleType name="endian">
        <xs:restriction base="xs:string">
            <xs:enumeration value="big"/>
            <xs:enumeration value="little"/>
        </xs:restriction>
    </xs:simpleType>
    <xs:complexType name="abstractTargetMachineProfile" abstract="true">
        <xs:annotation>
            <xs:documentation>Defines the target server machine
profile.</xs:documentation>
        </xs:annotation>
        <xs:attribute name="name" type="xs:string" use="optional"/>
        <xs:attribute name="endian" type="cics:endian" use="optional"/>
    </xs:complexType>
    <xs:complexType name="targetMachineProfile">
        <xs:annotation>
            <xs:documentation>Defines the target server machine
profile.</xs:documentation>
        </xs:annotation>
        <xs:complexContent>
            <xs:restriction base="cics:abstractTargetMachineProfile">
                <xs:attribute name="name" type="xs:string" use="required"/>
                <xs:attribute name="endian" type="cics:endian"
use="required"/>
            </xs:restriction>
        </xs:complexContent>
    </xs:complexType>
    <xs:complexType name="intelMachineProfile">
        <xs:complexContent>
            <xs:restriction base="cics:abstractTargetMachineProfile">
                <xs:attribute name="name" type="xs:string" use="optional"
default="Intel"/>
                <xs:attribute name="endian" type="cics:endian"
use="optional" default="little"/>
            </xs:restriction>
        </xs:complexContent>
    </xs:complexType>

I've attached the relevant files.

I am building with Ant 1.5.3, Java 1.3.1_08, JAXB 1.0.1, Xalan 2.5.1.

Thanks,
Gary