<datasource jndi-name="java:jboss/jdbc/exampleDS" pool-name="jdbc/exampleDS" enabled="true" use-java-context="true" use-ccm="true">
                    <connection-url>jdbc:mysql://127.0.0.1:3306/example?useSSL=false</connection-url>
                    <driver>mysql-connector-java-5.1.43-bin.jar</driver>
                    <pool>
                        <min-pool-size>10</min-pool-size>
                        <max-pool-size>100</max-pool-size>
                        <prefill>true</prefill>
                    </pool>
                    <security>
                        <user-name>root</user-name>
                        <password>password</password>
                    </security>
                    <validation>
                        <valid-connection-checker class-name="org.jboss.jca.adapters.jdbc.extensions.mysql.MySQLValidConnectionChecker"/>
                        <exception-sorter class-name="org.jboss.jca.adapters.jdbc.extensions.mysql.MySQLExceptionSorter"/>
                    </validation>
                </datasource>
<driver name="mysql-connector-java-5.1.43-bin.jar" module="com.mysql">
                        <xa-datasource-class>com.mysql.jdbc.jdbc2.optional.MysqlDataSource</xa-datasource-class>
                    </driver>

<resource-ref>
        <description>example</description>
        <res-ref-name>jdbc/exampleDS</res-ref-name>
        <res-type>javax.sql.DataSource</res-type>
        <res-auth>Container</res-auth>
</resource-ref>

private ServiceLocator() {
    try {
        this.initCtx = new InitialContext();
        this.envCtx = (Context) initCtx.lookup("java:comp/env");
        DataSource ds = (DataSource)
                envCtx.lookup("jdbc/exampleDS");
    } catch (NamingException e) {
        ApplicationException apRE = new ApplicationException(ErrorCode.E_JDNI001, e);
        LogService.getLog().fatal(apRE.getMessage(), apRE);
        throw apRE;
    }
}