JAXB typeSafeEnumBinding not working with fixedAttributeAsConstantProperty in episodes

Question

I'm trying to make some (contract first) java libraries with XSD's I cannot change.

So, suppose there are 2 XSD Maven projects:

1) Project A that defines an AttributeGroup, with an attribute entry (enum) set to a fixed value

2) Project B that uses the AttributeGroup

Project B uses project A as episode. Now, project A creates an episode when compiled. This episode maps the enum type to a typeSafeEnum.

The result of the compilation of B is that the binding 'fixedAttributeAsConstantProperty' is ignored. I would have expected:

@XmlAttribute(name = "type", namespace = "http://test.org/attrib")
public final static TypeType TYPE = TypeType.SIMPLE;

Instead I got:

@XmlAttribute(name = "type", namespace = "http://test.org/attrib")
protected TypeType type; 

If A and B are build in one compilation unit it works.

---

I've reduced the problem to the generated episode binding in project A:

  <bindings scd="x-schema::tns" xmlns:tns="http://test.org/attrib">
    <schemaBindings map="false">
      <package name="org.test.attrib"/>
    </schemaBindings>
    <bindings scd="~tns:typeType">
      <typesafeEnumClass ref="org.test.attrib.TypeType"/>
    </bindings>
  </bindings>
</bindings>

My assumption: at the moment the XJC compiler sees a mapping to a typeSafeEnumClass it does not seem to build an internal representation of the enum type. Therefore it does not 'know' how to set the fixed value of TypeType in project B to constant. I've tried to use a binding . That generates a string mapping i.s.o an enum. In that case project B does set the 'fixed' value to a (string) constant. However, it creates other problems down the line.

Anyone know how to solve this? Am I looking at an XJC bug?

---

To be complete here is the source code of the example projects:

1) Project A that defines an AttributeGroup with in the group a fixed Attribute.

<xs:attribute name="type" type="attrib:typeType"/>

<xs:simpleType name="typeType">
    <xs:restriction base="xs:token">
        <xs:enumeration value="simple"/>
        <xs:enumeration value="extended"/>
    </xs:restriction>
</xs:simpleType>

<xs:attributeGroup name="attribGrp">
    <xs:attribute ref="attrib:type" fixed="simple"/>
</xs:attributeGroup>

binding.xjb:

<jaxb:bindings version="2.1" xmlns:jaxb="http://java.sun.com/xml/ns/jaxb" 
                   xmlns:xs="http://www.w3.org/2001/XMLSchema" 
                   xmlns:xjc="http://java.sun.com/xml/ns/jaxb/xjc" 
                   jaxb:extensionBindingPrefixes="xjc">

        <jaxb:globalBindings fixedAttributeAsConstantProperty="true"/>


</jaxb:bindings>

pom.xml:

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>test</groupId>
    <artifactId>attrib</artifactId>
    <version>1.0.0-SNAPSHOT</version>
    <packaging>jar</packaging>

    <build>
        <plugins>
            <plugin>
                <groupId>org.jvnet.jaxb2.maven2</groupId>
                <artifactId>maven-jaxb2-plugin</artifactId>
                <version>0.8.3</version>
                <executions>
                    <execution>
                        <goals>
                            <goal>generate</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <schemaIncludes>
                        <include>attrib.xsd</include>
                    </schemaIncludes>
                    <bindingIncludes>
                        <include>binding.xjb</include>
                    </bindingIncludes>
                    <target>2.1</target> 
                    <verbose>true</verbose>                 
                </configuration>
            </plugin>
        </plugins>  
    </build>
</project> 

2) And a Project B that uses this AttributeGroup

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" 
           targetNamespace="http://test.org/attribUser"
           xmlns:attrib="http://test.org/attrib"
           xmlns:attribUser="http://test.org/attribUser">

    <xs:import namespace="http://test.org/attrib" schemaLocation="http://test.org/attrib/attrib.xsd"/>


    <xs:complexType name="userOfTst">
        <xs:sequence>
            <xs:element name="dontCare" type="xs:string"/>   
        </xs:sequence>
        <xs:attributeGroup ref="attrib:attribGrp"/>
    </xs:complexType>

</xs:schema>

binding.xjb:

<jaxb:bindings version="2.1" xmlns:jaxb="http://java.sun.com/xml/ns/jaxb" 
               xmlns:xs="http://www.w3.org/2001/XMLSchema" 
               xmlns:xjc="http://java.sun.com/xml/ns/jaxb/xjc" 
               jaxb:extensionBindingPrefixes="xjc">

    <jaxb:globalBindings fixedAttributeAsConstantProperty="true"/>


</jaxb:bindings>

catalog.xml:

<?xml version="1.0" encoding="windows-1252"?>
<catalog  xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog">  
    <group>  
        <systemSuffix systemIdSuffix="http://test.org/attrib/attrib.xsd"  uri="maven:test:attrib!/attrib.xsd"/>
    </group>
</catalog>

pom.xml:

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
        <modelVersion>4.0.0</modelVersion>

        <groupId>test</groupId>
        <artifactId>attribUser</artifactId>
        <version>1.0.0-SNAPSHOT</version>
        <packaging>jar</packaging>

        <dependencies>          
            <dependency>
                <groupId>test</groupId>
                <artifactId>attrib</artifactId>
                <version>1.0.0-SNAPSHOT</version>
            </dependency>
        </dependencies>

        <build>
            <plugins>
                <plugin>
                    <groupId>org.jvnet.jaxb2.maven2</groupId>
                    <artifactId>maven-jaxb2-plugin</artifactId>
                    <version>0.8.3</version>
                    <executions>
                        <execution>
                            <goals>
                                <goal>generate</goal>
                            </goals>
                        </execution>
                    </executions>
                    <configuration>
                        <schemaIncludes>
                            <include>attribUser.xsd</include>
                        </schemaIncludes>
                        <bindingIncludes>
                            <include>binding.xjb</include>
                        </bindingIncludes>
                        <catalog>${project.build.resources[0].directory}/catalog.xml</catalog>
                        <target>2.1</target> 
                        <verbose>true</verbose>
                        <useDependenciesAsEpisodes>true</useDependenciesAsEpisodes>
                    </configuration>
                </plugin>
            </plugins>  
        </build>

    </project>