How to inject bean references using Spring Framework?

[Ravi Kiran Va]

Hi , please take some time to understand the question .

we are having a very Tightly coupled code which was already developed since 2004 ,so we decided to split into seperetae Beans (classes) , and each Bean performing its Own operation , we are using Spring for this .

In our Applcation , we want to represent each module having its own XML file , something similar as shown say it as FirstModule.xml

<beans>

<bean id="InsertData">
<bean name="First" class="com.First">  // This is a Java File
<bean name="Second" class="com.First"> // This is a Java File
<bean name="Third" class="com.First"> // This is a Java File
</bean>

<bean id="UpdateData">
<bean name="First" class="com.First">
<bean name="Seventh" class="com.First">
<bean name="Eight" class="com.First">
</bean>


<bean id="DeleteData">
<bean name="Eleven" class="com.First">
<bean name="Twelve" class="com.First">
<bean name="Thirteen" class="com.First">
</bean>

</beans>

As you can see from the xml file is that , each Bean id has its own sequence of operations defined .

Now my question is , from the Dao Layer , depending upon the request , i want to call a sepearte Bean id (For example InsertData) , so taht it will execute a series of operations as mentioned in the xml file ??

Is it possible to achieve this using Spring 3 Framework ?? Please sugegst , Thanks .

[Mark Spritzler]

That is not a valid Spring xml configuration file.

<bean id="markService" class="com.spritzler.MarkServiceImpl">
    <constructor-arg ref="beanReference1"/>
    <constructor-arg ref="beanReference2"/>
</bean

><bean id="beanReference1" class="com.spritzler.BeanReference1Impl"/>
<bean id="beanReference2" class="com.spritzler.BeanReference2Impl"/>

That is injecting bean references using Spring via Constructor arg dependency injection. You would use…

<bean id="markService" class="com.spritzler.MarkServiceImpl">
    <property name="ref1" ref="beanReference1"/>
    <property name="ref2" ref="beanReference2"/>
</bean

><bean id="beanReference1" class="com.spritzler.BeanReference1Impl"/>
<bean id="beanReference2" class="com.spritzler.BeanReference2Impl"/>

to do dependency injection via Setter methods where MarkServiceImpl has two setter methods.

setRef1(BeanReference reference1)
setRef2(BeanReference reference2)

Mark