JAXB Compiler Interface generation problem

Question

I have a schema where two different elements extend the same base type. The JAXB compiler throws the following error. How do I fix this?
parsing a schema...
An interface with the same name "generated.FooType" is generated from more than one schema component.
line 10 of sample.xsd
(Relevant to above error) another one is generated from this schema component.
line 23 of sample.xsd
Failed to parse a schema.
<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" >     <xsd:element name="Sample" type="Sample_Type"/>
     <xsd:complexType name="Sample_Type">
          <xsd:sequence>
                    <xsd:element     ref="Foo"/>
                    <xsd:element     ref="Bar"/>
          </xsd:sequence>
     </xsd:complexType>
     <xsd:element name="Foo">
          <xsd:complexType>
               <xsd:complexContent>
                    <xsd:extension base="Foo_Type"/>
          </xsd:complexContent>
          </xsd:complexType>
     </xsd:element>
     <xsd:element name="Bar">
          <xsd:complexType>
               <xsd:complexContent>
                    <xsd:extension base="Foo_Type"/>
               </xsd:complexContent>
          </xsd:complexType>
     </xsd:element>
     <xsd:complexType name="Foo_Type">
               <xsd:sequence>
                         <xsd:element ref="FooBar"/>
                    </xsd:sequence>
     </xsd:complexType>
     <xsd:element name="FooBar" type="FooBar_Type"/>
     <xsd:simpleType name="FooBar_Type">
          <xsd:restriction base="xsd:long"/>
     </xsd:simpleType>
</xsd:schema>

Answer 1

The problem is because of you have a complex type Foo_Type
Solution:
=============
Replace all occurences of Foo_Type with something else say "Some_Type"
It should work
Explaination:
=============
Basically you were getting FooType generated from 2 cases. You have an element "Foo" inside which you have an anonymous complex type. So the java class for the anonymous complex type would be "FooType"
Then you had a named complex type Foo_Type and the java class would be "FooType" again because "_" is removed when generating classes
Hence the compiler reported the error
For more explaination see Section 5.7.2 of the spec Also Table 3.2 of the spec
Also you seem to be using xjc <schemafile>
Hence the code by default gets generated in package "generated"
Recommendation
=============
Use xjc -p com.something <schemafile>
to get the package com.something