JAXB does not create enum for restricted element - enums

Question

I need some help with my xsd and jaxb.
My xsd leads to an working class (MyWorkingType) and the 'ProblemType', which is not generated with an enum.
As I believe, that both forms are valid, why does this not work, where is the bug (jaxb or at the keyboard?)
Edit: I add my ant-script, because Xtian could create this via maven-plugin.
This is my xsd:
<?xml version="1.0" encoding="utf-8"?>
<xs:schema elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:complexType name="ProblemType">
<xs:sequence>
<xs:element minOccurs="0" name="normalAttribute" nillable="true" type="xs:boolean" />
<xs:element minOccurs="1" maxOccurs="1" name="enumAttribute">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:enumeration value="VALUE_1" />
<xs:enumeration value="VALUE_2" />
<xs:enumeration value="VALUE_3" />
</xs:restriction>
</xs:simpleType>
</xs:element>
</xs:sequence>
</xs:complexType>
<xs:simpleType name="workingEnum">
<xs:restriction base="xs:string">
<xs:enumeration value="VALUE_1" />
<xs:enumeration value="VALUE_2" />
<xs:enumeration value="VALUE_3" />
</xs:restriction>
</xs:simpleType>
<xs:complexType name="MyWorkingType">
<xs:sequence>
<xs:element minOccurs="0" name="normalAttribute" nillable="true" type="xs:boolean" />
<xs:element minOccurs="1" maxOccurs="1" name="enumAttribute" type="workingEnum" />
</xs:sequence>
</xs:complexType>
</xs:schema>
This is my ant-script I use within eclipse:
<?xml version="1.0" encoding="UTF-8"?>
<project name="generate" default="generate-jaxb" basedir=".">
<taskdef name="xjc" classname="com.sun.tools.xjc.XJCTask">
<classpath>
<fileset dir="../lib" includes="*.jar" />
</classpath>
</taskdef>
<target name="generate-jaxb">
<xjc destdir="../../src-gen" package="test.gen">
<arg value="-no-header" />
<schema dir="xsd/" includes="*.xsd"/>
</xjc>
</target>
</project>

Answer 1

Try specifying typesafeEnumBase. This is what I normally do when generating mappings:
<jaxb:bindings schemaLocation="mySchema.xsd"
node="/xs:schema">
<jaxb:globalBindings
fixedAttributeAsConstantProperty="false"
typesafeEnumBase="xs:string"
typesafeEnumMemberName="generateName"
generateIsSetMethod="true">
<xjc:noValidator />
<xjc:noValidatingUnmarshaller />
</jaxb:globalBindings>
<jaxb:schemaBindings>
<jaxb:package name="my.package.name"/>
</jaxb:schemaBindings>
</jaxb:bindings>
However I don't think this is the cause.
Since my maven-jaxb2-plugin works and xjc via Ant does not, the question, what is the difference.
Actually, strict, verbose and extension settings should make no difference for enums.
However it may be that maven-jaxb2-plugin uses a newer version of xjc than you're using with enum. Please try to update your xjc and see if it helps.

Answer 2

<?xml version="1.0" encoding="utf-8"?>
<xs:schema elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:complexType name="ProblemType">
<xs:sequence>
<xs:element minOccurs="0" name="normalAttribute" nillable="true" type="xs:boolean" />
<xs:element minOccurs="1" maxOccurs="1" name="enumAttribute">
<xs:simpleType name="problemTypeEnum">
<xs:restriction base="xs:string">
<xs:enumeration value="VALUE_1" />
<xs:enumeration value="VALUE_2" />
<xs:enumeration value="VALUE_3" />
</xs:restriction>
</xs:simpleType>
</xs:element>
</xs:sequence>
</xs:complexType>
<xs:simpleType name="workingEnum">
<xs:restriction base="xs:string">
<xs:enumeration value="VALUE_1" />
<xs:enumeration value="VALUE_2" />
<xs:enumeration value="VALUE_3" />
</xs:restriction>
</xs:simpleType>
<xs:complexType name="MyWorkingType">
<xs:sequence>
<xs:element minOccurs="0" name="normalAttribute" nillable="true" type="xs:boolean" />
<xs:element minOccurs="1" maxOccurs="1" name="enumAttribute" type="workingEnum" />
</xs:sequence>
</xs:complexType>
</xs:schema>
I generated the class by this maven plugin
<plugin>
<groupId>org.jvnet.jaxb2.maven2</groupId>
<artifactId>maven-jaxb2-plugin</artifactId>
<version>0.9.0</version>
<executions>
<execution>
<id>commun-generate</id>
<goals>
<goal>generate</goal>
</goals>
<configuration>
<generateDirectory>${basedir}/src/main/java/</generateDirectory>
<schemaDirectory>${basedir}/src/main/resources/schema/xsd</schemaDirectory>
<strict>false</strict>
<extension>true</extension>
<verbose>true</verbose>
</configuration>
</execution>
</executions>
</plugin>
ProblemTypeEnum.java
#XmlType(name = "problemTypeEnum")
#XmlEnum
public enum ProblemTypeEnum {
VALUE_1,
VALUE_2,
VALUE_3;
public String value() {
return name();
}
public static ProblemTypeEnum fromValue(String v) {
return valueOf(v);
}
}
If you can change the structure .. this is the xsd
<?xml version="1.0" encoding="utf-8"?>
<xs:schema elementFormDefault="qualified"
xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:complexType name="ProblemType">
<xs:sequence>
<xs:element minOccurs="0" name="normalAttribute" nillable="true"
type="xs:boolean" />
<xs:element minOccurs="1" maxOccurs="1" name="enumAttribute"
type="problemTypeEnum" />
</xs:sequence>
</xs:complexType>
<xs:simpleType name="problemTypeEnum">
<xs:restriction base="xs:string">
<xs:enumeration value="VALUE_1" />
<xs:enumeration value="VALUE_2" />
<xs:enumeration value="VALUE_3" />
</xs:restriction>
</xs:simpleType>
<xs:simpleType name="workingEnum">
<xs:restriction base="xs:string">
<xs:enumeration value="VALUE_1" />
<xs:enumeration value="VALUE_2" />
<xs:enumeration value="VALUE_3" />
</xs:restriction>
</xs:simpleType>
<xs:complexType name="MyWorkingType">
<xs:sequence>
<xs:element minOccurs="0" name="normalAttribute" nillable="true"
type="xs:boolean" />
<xs:element minOccurs="1" maxOccurs="1" name="enumAttribute"
type="workingEnum" />
</xs:sequence>
</xs:complexType>
</xs:schema>