facing not a know entity type problem in spring...plzz help me...

[ksh agarwal]

Hi,

I am facing a problem in spring jpa. I am not able to find what kind of error is this as I think my code is fine...

public static void main(String args[])
	 {
		 ElectricDeviceService electricDeviceService;
		 ApplicationContext classpathCtx = new ClassPathXmlApplicationContext("middleware-dao.xml");
		 electricDeviceService = (ElectricDeviceService) classpathCtx.getBean("DeviceService");
		 
		 try
		 {
		
		 // Testing addDevices
		 DeviceEntityInterface deviceEntity = new ElectricDeviceEntity();
		 deviceEntity.setId(2);
		 electricDeviceService.deleteDevice(deviceEntity);
		 
		 }
		 catch(Exception e)
		 {
			 e.printStackTrace();
		 }
		 
	 }

Service class is:

@Service
public class ElectricDeviceService {
	
	
	
	@Autowired
   private DeviceDaoInterface deviceDao;
	
	public void deleteDevice(DeviceEntityInterface deviceEntity)
	{
		deviceDao.delete(deviceEntity);
	}

}

Dao class is:

@Repository
@Component
public class ElectricDeviceDao implements DeviceDaoInterface{
	
	 @PersistenceContext private EntityManager em;


	 @Transactional
	public void delete(DeviceEntityInterface deviceEntity)
	{
		 em.remove(deviceEntity);
		 em.flush();

	}
}

Spring xml is:

<?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:jpa="http://www.springframework.org/schema/data/jpa"
           xmlns:jdbc="http://www.springframework.org/schema/jdbc"
            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
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.0.xsd
http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd">


 <bean
class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />
 

<context:annotation-config/>
  <tx:annotation-driven transaction-manager="transactionManager" />

<bean id="deviceDao" class="com.infosys.ingreen.middleware.dao.ElectricDeviceDao" autowire="byType" ></bean>
  

<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
  <property name="driverClassName" value="com.mysql.jdbc.Driver" /> 
  <property name="url" value="jdbc:mysql://localhost:3306/emi" /> 
  <property name="username" value="root" /> 
  <property name="password" value="root123" /> 
  </bean>


 <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean" >
 	<property name="dataSource" ref="dataSource" /> 
 	<property name="persistenceUnitName" value="IngreenMiddleware" /> 
 	<property name="loadTimeWeaver">
         <bean class="org.springframework.instrument.classloading.SimpleLoadTimeWeaver"/>
      </property>

	<property name="jpaVendorAdapter">
		<bean class="org.springframework.orm.jpa.vendor.TopLinkJpaVendorAdapter">
			<property name="databasePlatform" value="oracle.toplink.essentials.platform.database.MySQL4Platform"/>
			
  			<property name="database" value="MYSQL" /> 
  			<property name="showSql" value="true" /> 
  			 <property name="generateDdl" value="true" /> 
  		</bean>
  	</property>
</bean>


 
  <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager" >
  	<property name="entityManagerFactory" ref="entityManagerFactory" /> 
  </bean>



<bean id="DeviceService" class="com.infosys.ingreen.middleware.service.ElectricDeviceService" autowire="byType"/>

</beans>

persistence xml:

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0" 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_2_0.xsd">
	<persistence-unit name="IngreenMiddleware" transaction-type="RESOURCE_LOCAL">
	<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
	
		<class>com.infosys.ingreen.middleware.entity.ElectricDeviceEntity</class>
		<class>com.infosys.ingreen.middleware.entity.PortEntity</class>
		<class>com.infosys.ingreen.middleware.entity.ProfileEntity</class>
		<class>com.infosys.ingreen.middleware.entity.UserEntity</class>
		<class>com.infosys.ingreen.middleware.entity.LiveDataEntity</class>
		<class>com.infosys.ingreen.middleware.entity.DataEntity</class>
		<exclude-unlisted-classes>false</exclude-unlisted-classes> 
		
		
	</persistence-unit>
</persistence>

ANd entity class is:

@javax.persistence.Entity
@Table(name="devices")


public class ElectricDeviceEntity implements DeviceEntityInterface{
	
	@Id
	private int id;
	private String name;
	@ManyToOne(optional=false,cascade=CascadeType.ALL,targetEntity=ProfileEntity.class)
	@JoinColumn(name="profile", referencedColumnName="id")
	private ProfileEntity profileEntity;
	private int device;
	@ManyToOne(optional=false,cascade=CascadeType.ALL,targetEntity=PortEntity.class)
	@JoinColumn(name="port", referencedColumnName="id")
	private PortEntity portEntity;
}

I am getting this error:

Object: com.infosys.ingreen.middleware.entity.ElectricDeviceEntity@141fab6 is not a known entity type.

As I have searched out, many people faced this prob because of some compatibility issue, especially with eclipseLink. I am using spring 3 with toplink. What can be the cause of error? When I deleted the entity from table without spring, it worked...!!!

[James Sutherland]

It is most likely some kind of class loader issue. You probably have the class loaded with two different class loaders.

If you just read, does it work? Check the difference in the class loaders from reading versus your app.

If you disable weaving does it work?