Is there be any perfomace or other difference in declaring bean in these forms?

[Kishor Joshi]

Hi there

I am using Spring to develop a web application.I have one question that

I have declare a bean something like this

 <bean id="myBean"  class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
   <property name="dataSource" ref="dataSource"></property>
   <property name="hibernateProperties">
                <props>
                  <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
                  <prop key="hibernate.show_sql">true</prop>
                  <prop key="hibernate.current_session_context_class">thread</prop>
                  <prop key="hibernate.hbm2ddl.auto">create</prop>
                </props>
   </property>
   <property name="annotatedClasses">
    <list>
        <value>Annotated-1</value>
        <value>Annotated-2</value>
        <value>Annotated-3</value>
    </list>
    </property>
</bean>

and then I am referncing this bean like this

<bean id="loginVerify"  class="myDaoClassName">
   <property name="factory" ref="myBean"></property>
 </bean>

everything is working fine till so far

in myDaoClassName I am implementing 6 different object class
1)One approach is declare these all beans into seprate bean and refernce them according to requirement

2)second is declare all of them inside a single bean and annotated that class and declare all bean inside that and refernce only that one particular bean

which approach is good?

(If my question is not clear please ask)

[Jeanne Boyarsky]

Kishor,
It's not a performance difference. In some scenarios, one approach might be clearer than the other. If your embedded bean is used multiple times, you should definitely define it as a top level bean. If it is only used in one place, it is sometimes clearer to declare it embedded to keep everything together.

While it is a judgment call, this is also important to be a team convention. Different people deciding different things on the same team makes it harder to find the beans than it needs to be!

[Kishor Joshi]

Thanks Jeanne

[Kishor Joshi]

Ok Suppose I am deaclaring a bean where I have annotated 5 class

and In another bean I have annotated only 3 class.

I am refernce first bean from many place sometimes all 5 class requires and sometimes only 2
so If I annotated a bean with 5 class will there extra objects are created by bean factory?