ClassCastException: Error in the WAR

[Kshitiz Agarwal]

Hi, I am facing a problem while retrieving objects from a list obtained from another package.

Exception in thread "main" java.lang.ClassCastException: com.infosys.ingreen.middleware.entity.DeviceEntity cannot be cast to com.infosys.ingreen.middleware.entity.DeviceEntity
	at com.infosys.ingreen.middleware.service.DeviceService.main(DeviceService.java:30)

This is the code of my com.infosys.ingreen.middleware.service.DeviceService class:

public class DeviceService implements DeviceServiceInterface{
	
	public List<DeviceEntity> getDevices()
	{
		DeviceDao deviceDao;
		ApplicationContext context = new ClassPathXmlApplicationContext("middleware-dao.xml");
		deviceDao = (DeviceDao) context.getBean("DeviceDao");
		return deviceDao.getDevices();		
	}
	
	 public static void main(String args[])
	 {
		 DeviceService deviceService = new DeviceService();
		 List<DeviceEntity> deviceList = new ArrayList<DeviceEntity>(); 
	     deviceList = deviceService.getDevices();
		 int j=0; 
         while (j< deviceList.size())
         {
        	 
                 System.out.println( deviceList.get(j).getId());
                 j++;
         }
	 }


}

And this is middleware-dao.xml:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xmlns:aop="http://www.springframework.org/schema/aop"
            xmlns:context="http://www.springframework.org/schema/context" xmlns:jee="http://www.springframework.org/schema/jee"
            xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.0.xsd">



<bean id="DeviceDao" class="com.infosys.ingreen.middleware.dao.DeviceDao">
      <property name="entityManagerFactory" ref="entityManagerFactory"/>
   </bean>

<bean 
class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor"/>
 <context:annotation-config/>

   <bean id="entityManagerFactory" 
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"> 
<property name="dataSource" ref="dataSource"/> 
<property name="jpaVendorAdapter"> 
<bean class="org.springframework.orm.jpa.vendor.TopLinkJpaVendorAdapter">  
<property name="showSql" value="true"/>  
<property name="generateDdl" value="true"/>  
<property name="databasePlatform" value="oracle.toplink.essentials.platform.database.MySQL4Platform"/>
 </bean>
 </property>
 
 <property name="loadTimeWeaver">
 <bean class="org.springframework.instrument.classloading.SimpleLoadTimeWeaver"/>
 </property>
 </bean>

</bean></beans>

Now I know the problem is because of different class loaders. Now the thing is all the classes are in the same WAR, so same classloader should be used. What I assume is may be Spring is using its own class loader SimpleLoadTimeWeaver to load DeviceDao class. If that is the issue, then how can I resolve it? Otherwise what can be the problem??

[Mark Spritzler]

Why do you even have the loadTimeWeaverBean? It isn't needed.

Anyway, is the domain object on two different JVMs? Maybe each has a different compiled version.

Mark

[Kshitiz Agarwal]

Mark Spritzler wrote:Why do you even have the loadTimeWeaverBean? It isn't needed.

Anyway, is the domain object on two different JVMs? Maybe each has a different compiled version.

Mark

Thanks for the reply....If I remove loadTimeWeaver..then this error comes...

Caused by: java.lang.IllegalStateException: Cannot apply class transformer without LoadTimeWeaver specified

And also, the whole project is in one workspace, in one machine. The domain object is in different package though.