Hi.

I have two tables say Table1 and Table2.
-->Table1. has 1 PK(type_id), 1 unique key(code), and 1 Fk (Parent_id), this FK is referencing the PK in this same table.
-->Table2 has 1 PK(id), and 1 FK(type_id) that is referencing the PK of the "Table1".

For these two tables I have 2 java classes, and I am using Hibernate Annotations in these classes.
-->In class1(corresponding to Table1) , i am giving code like this..
@Entity
@Table(name = "Table1")
public class Class1 implements Serializable{
@Id @GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "type_id")
@OneToOne(mappedBy = "type_id")
Integer id;

@Column(name = "parent_id")
@JoinColumn(name = "parent_id",referencedColumnName = "type_id")
Integer parent;

@Column(name = "code",unique = true)
String scanCode;

@OneToMany(cascade = CascadeType.PERSIST)
@JoinColumn(name = "typeId",referencedColumnName = "type_id")
Set<Class2> Class2;
}

Some more fields are also there, but they are independent.

--> In class2(corresponding to Table2) , i am giving code like this..
@Entity
@Table(name = "Table2")
public class Class2 implements Serializable{

@Id @GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "id")
Integer id;

@Column(name = "typeId")
@OneToOne(cascade = CascadeType.ALL)
@JoinColumn(name = "typeId",referencedColumnName = "type_id")
Integer typeId;
}

For applicationContext.xml my code is like this :
<!-- Hibernate Data Source - settings for db-->

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

<!-- Hibernate AnnotationSessionFactory - settings for Annotation oriented classes-->

<bean id="annotationSessionFactory"
class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource">
<ref local="dataSource"/>
</property>

<property name="annotatedClasses">
<list>
<value>com.package1.package2.Class1</value>
<value>com.package1.package2.Class2</value>
</list>
</property>

<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">
org.hibernate.dialect.MySQLDialect
</prop>
<!-- Hibernate cache provider(ehcache) - settings for caching -->
<prop key="hibernate.cache.provider_class">
org.hibernate.cache.EhCacheProvider
</prop>
<prop key="hibernate.cache.use_second_level_cache">true</prop>
<prop key="hibernate.cache.use_query_cache">true</prop>
<prop key="hibernate.cache.provider_configuration_file_resource_path">
ehcache.xml
</prop>

</props>
</property>
</bean>

<!--Application classes (Spring beans)-->

<!-- net package DAO classes -->
<bean id="class1DAO" class="com.package1.package2.Class1DAO" scope="prototype">
<property name="sessionFactory">
<ref local="annotationSessionFactory"/>
</property>
</bean>

<!-- Interfaces to DWR -->
<!--net package Spring classes along with its javascript object references-->
<bean id="class1Int" class="com.package1.package2.Class1Interface" scope="singleton">
<dwr:remote javascript="Class1"/>
<constructor-arg ref="class1DAO"></constructor-arg>
</bean>

The code for my interface and DAO is like this :

public class Class1Interface {

//Instance variables
private Map<String, Class1> list = new HashMap<String, Class1>();
private Class1DAO class1DAO;

/**
* Parameterized Constructor for Class1Interface called from
* applicationContext.xml
*
* @param class1DAO
*/
Class1Interface(Class1DAO class1DAO) throws Exception{
this.class1DAO = class1DAO;
initClass1();
}

/**
* It is an application level cache of all the Class1 Objects in the
* system
*/
public void initClass1() {

// Call the DAO method to get all the class object defined in the system
// and store it in the List
List<Class1> l = class1DAO.getList();

// Check for the List size
if (l.size() > 0) {
---------------
}
}

DAO class---

public List<Class1> getList() {
try {
return getHibernateTemplate().find("from Class1");
} catch (DataAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
Now when I start the server it , it gives me exception like this :

SEVERE: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'class1Int' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.package1.package2.Class1Interface]: Constructor threw exception; nested exception is org.springframework.orm.hibernate3.HibernateQueryException: Class1 is not mapped [from Class1]; nested exception is org.hibernate.hql.ast.QuerySyntaxException: Class1 is not mapped [from Class1]
at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:254)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:925)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:835)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:440)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
at java.security.AccessController.doPrivileged(Native Method)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:221)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:429)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:729)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:381)
at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:255)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:199)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:45)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3843)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4350)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:516)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:578)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)

Can anyone help me to solve this problem ??

I am also facing the Same problem.

Seems that Hibernate Annotations doesn't parse your annotated classes at all.
This may be a classpath problem or anyway a configuration problem.
Is com.package1.package2 the correct package of Class1 ?

Please enable

log4j.logger.org.hibernate.cfg=INFO

in your log4j configuration, then check if you have a line logged like following on SessionFactory startup.

AnnotationBinder:446 - Binding entity from annotated class: com.package1.package2.Class1