Create a common xsd generated class to be used by other packages - xsd

Question

I am trying to use the same generated class but in separate packages. So the structure should look something like this:
com.test.common
-commonType.java
com.test.A
-objectA.java
com.test.B
-objectB.java
But i keep getting this:
com.test.common
-commonType.java
com.test.A
-objectA.java
-commonType.java
com.test.B
-objectB.java
-commonType.java
My common.xsd looks like this:
<?xml version="1.0"?>
<xs:schema elementFormDefault="qualified" version="1.0"
targetNamespace="http://test.com/magic/common"
xmlns="http://test.com/magic/common"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
jaxb:version="2.0">
<xs:complexType name="CommonType">
<xs:sequence>
<xs:element name="name" type="xs:string" />
</xs:sequence>
</xs:complexType>
</xs:schema>
the objectA.xsd looks like
<?xml version="1.0"?>
<xs:schema elementFormDefault="qualified" version="1.0"
targetNamespace="http://test.com/magic/objectA"
xmlns:common="http://test.com/magic/common"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
jaxb:version="2.0">
<xs:complexType name="ObjectA">
<xs:sequence>
<xs:element name="size" type="xs:string" />
<xs:element name="commonA" type="common:CommonType" />
</xs:sequence>
</xs:complexType>
</xs:schema>
And objectB.xsd looks like:
<?xml version="1.0"?>
<xs:schema elementFormDefault="qualified" version="1.0"
targetNamespace="http://test.com/magic/objectB"
xmlns:common="http://test.com/magic/common"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
jaxb:version="2.0">
<xs:complexType name="ObjectB">
<xs:sequence>
<xs:element name="version" type="xs:string" />
<xs:element name="commonB" type="common:CommonType" />
</xs:sequence>
</xs:complexType>
</xs:schema>
I have a common binding file common.xjb which looks like this:
<jxb:bindings schemaLocation="../xsd/common.xsd" node="/xsd:schema">
<jxb:schemaBindings>
<jxb:package name="com.test.common"/>
</jxb:schemaBindings>
</jxb:bindings>
And finally my maven job looks like this:
<plugin>
<groupId>org.jvnet.jaxb2.maven2</groupId>
<artifactId>maven-jaxb2-plugin</artifactId>
<configuration>
<args>
<arg>-Xequals</arg>
</args>
<plugins>
<plugin>
<groupId>org.jvnet.jaxb2_commons</groupId>
<artifactId>jaxb2-basics</artifactId>
<version>0.6.3</version>
</plugin>
</plugins>
<episode>true</episode>
<extension>true</extension>
<verbose>true</verbose>
<generateDirectory>src/main/java</generateDirectory>
</configuration>
<executions>
<execution>
<id>common</id>
<goals>
<goal>generate</goal>
</goals>
<configuration>
<generatePackage>com.test.common</generatePackage>
<schemaIncludes>
<includeSchema>xsd/common.xsd</includeSchema>
</schemaIncludes>
</configuration>
</execution>
<execution>
<id>login</id>
<goals>
<goal>generate</goal>
</goals>
<configuration>
<generatePackage>com.test.A</generatePackage>
<bindingIncludes>
<includeBinding>xjb/commons.xjb</includeBinding>
</bindingIncludes>
<schemaIncludes>
<includeSchema>xsd/objectA.xsd</includeSchema>
</schemaIncludes>
</configuration>
</execution>
<execution>
<id>alert</id>
<goals>
<goal>generate</goal>
</goals>
<configuration>
<generatePackage>com.test.B</generatePackage>
<bindingIncludes>
<includeBinding>xjb/commons.xjb</includeBinding>
</bindingIncludes>
<schemaIncludes>
<includeSchema>xsd/objectB.xsd</includeSchema>
</schemaIncludes>
</configuration>
</execution>
</executions>
</plugin>
</plugins>

Answer 1

There is a part in the maven-jaxb2-plugin documentation dedicated specifically to the separate schema compilation. But you can also achieve your goal with usual XJC bindings.
Do not use generatePackage in the plugin config, use jaxb:package in bindings, ex.:
<jaxb:schemaBindings>
<jaxb:package name="generatePackage"/>
</jaxb:schemaBindings>
Use <jaxb:class ref="com.test.common.CommonType"/> on commonType in xjb/commons.xjb.
SO Disclaimer: I'm the author of the maven-jaxb2-plugin.

Answer 2

You can use the -episode extension in the JAXB XJC to handle this use case:
XJC call for common.xsd
xjc -d out -episode common.episode common.xsd
XJC call for objectA.xsd
The episode file produced from the first step is really a JAXB external bindings file that contains links between schema types and existing classes. This prevents XJC from regenerating these classes.
xjc -d out objectA.xsd -extension -b common.episode
For a Detailed Example
Can Castor handle class generation from multiple XSDs importing from a base XSD?