Clous sql error "System property rdbms.driver must be set"

Hi, every one.

i have problem with cloud sql , i use spring mvc with google app engine 1.8.3 and maven 3.
I want connect to my sql cloud via hibernate / jpa, so I declared a persistent file that contains the cloud sql  connection parameters  :



<?xml version="1.0" encoding="UTF-8" ?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd" version="1.0">
    <persistence-unit name="test" transaction-type="RESOURCE_LOCAL">
        <provider>org.hibernate.ejb.HibernatePersistence</provider>
        <class>com.demo.test/model</class>
        <properties>        
            <property name="hibernate.connection.driver_class" value="com.google.appengine.api.rdbms.AppEngineDriver"/>
             <property name="hibernate.connection.url" value="jdbc:google:rdbms://myinstan/mydb?zeroDateTimeBehavior=convertToNull"/>
            <property name="hibernate.connection.username" value="root"/>
             <property name="hibernate.connection.password" value=""/>
            <property name="hibernate.connection.pool_size" value="0" />
            <property name="hibernate.hbm2ddl.auto" value="update" />
            <property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/>
        </properties>
    </persistence-unit>
</persistence>


for running application i use maven command " appengine-devserver " ,and i have this error " System property rdbms.driver must be set " :

[INFO] ERROR: org.springframework.web.servlet.DispatcherServlet - Context initialization failed
[INFO] org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor#0': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in ServletContext resource [/WEB-INF/spring/appServlet/servlet-context.xml]: Invocation of init method failed; nested exception is java.lang.IllegalStateException: System property rdbms.driver must be set.
.....................

[INFO] Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in ServletContext resource [/WEB-INF/spring/appServlet/servlet-context.xml]: Invocation of init method failed; nested exception is java.lang.IllegalStateException: System property rdbms.driver must be set.
[INFO]     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1455)
..........................
[INFO] Caused by: java.lang.IllegalStateException: System property rdbms.driver must be set.
[INFO]     at com.google.appengine.api.rdbms.dev.LocalRdbmsServiceLocalDriver.registerDriver(LocalRdbmsServiceLocalDriver.java:80)

..............................

INFO] sept. 14, 2013 2:59:13 PM com.google.appengine.tools.development.ApiProxyLocalImpl log
[INFO] SEVERE: javax.servlet.ServletContext log: unavailable
[INFO] org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor#0': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in ServletContext resource [/WEB-INF/spring/appServlet/servlet-context.xml]: Invocation of init method failed; nested exception is java.lang.IllegalStateException: System property rdbms.driver must be set.



my question is,  I need to configure the cloud sql in the pom.xml ??? or is another thing I do not???


thanks

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