Wildfly MySQL XA configuration

module.xml

<?xml version="1.0" encoding="UTF-8"?>
<!-- 
This file needs to be placed in wildfly_dir/modules/system/layers/base/com/mysql/main.
The mysql connector needs to go there as well.
-->
<module xmlns="urn:jboss:module:1.1" name="com.mysql">
  <resources>
    <resource-root path="mysql-connector-java-5.1.25.jar"/>
  </resources>
  <dependencies>
    <module name="javax.api"/>
    <module name="javax.transaction.api"/>
  </dependencies>
</module>

standalone.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
This is a portion of the subsystem section of the wildfly configuration.
-->
<subsystem xmlns="urn:jboss:domain:datasources:2.0">
    <datasources>
        <xa-datasource jndi-name="java:jboss/datasources/ExampleDS" pool-name="ExampleDS" enabled="true">
            <xa-datasource-property name="URL">jdbc:mysql://hostname:3306/dbname?characterEncoding=UTF-8</xa-datasource-property>
            <driver>com.mysql</driver>
            <security>
                <user-name>mysql username</user-name>
                <password>mysql password</password>
            </security>
            <validation>
                <validate-on-match>false</validate-on-match>
                <background-validation>false</background-validation>
            </validation>
            <statement>
                <share-prepared-statements>false</share-prepared-statements>
            </statement>
        </xa-datasource>
        <drivers>
            <driver name="com.mysql" module="com.mysql">
                <xa-datasource-class>com.mysql.jdbc.jdbc2.optional.MysqlXADataSource</xa-datasource-class>
            </driver>
        </drivers>
    </datasources>
</subsystem>