spring ref parent

The following sample demonstrate the use of spring ref parent.
The Sample contain two Spring XML configuration files that are declared as followed :

The parent configuration file :

<beans>
.
<bean id="accountService" class="javaapplicationbasicspring.SimpleAccountService">
        <property name="Value">
            <value>Hello Zvika</value>
        </property>
    </bean>
</beans>

The child configuration file
<beans>
  < bean id="accountService" class="javaapplicationbasicspring.SimpleAccountService">
        <property name="Parent">
           <ref parent="accountService"/>
        </property>
    </bean>
</beans>

Please note that the child assign the value of the Parent property based on the value from the parent xml configuration file .
The beans ids in the parent and child  are the some in this example but it isn't mandatory .

The Bean declaration :

  1: public class SimpleAccountService {
  2:   
  3:    private String mString;
  4:    private SimpleAccountService mParent;   
  5: 
  6:     public SimpleAccountService getParent() {
  7:         return mParent;
  8:     }
  9: 
 10:     public void setParent(SimpleAccountService mParent) {
 11:         this.mParent = mParent;
 12:     }
 13:    
 14:     public SimpleAccountService()
 15:     {
 16:     }
 17:     
 18:     public String getValue ()
 19:     {
 20:         return mString;
 21:     }
 22:  
 23:     public void setValue (String pValue )
 24:     {
 25:          mString = pValue; 
 26:     }
 27:     
 28:     public void DoTest()
 29:     {
 30:         System.out.print ("Hello: " + mParent.getValue());
 31:     }
 32: }

 The main / test program :

  1: public class JavaApplicationBasicSpring 
  2: {  
  3:     public static void main(String[] args)
  4:     {  
  5:     ClassPathXmlApplicationContext appContextParent = new ClassPathXmlApplicationContext(   new String[] {"resources/ParentSpringXMLConfig.xml"
  6:     ClassPathXmlApplicationContext appContext = new ClassPathXmlApplicationContext( new String[] {"resources/SpringXMLConfig.xml"} ,appContextParent )
  7:     SimpleAccountService theSimpleAccountService =  (SimpleAccountService)appContext.getBean("accountService"); 
  8:     theSimpleAccountService.DoTest(); 
  9:   } 
 10: }

please note:
In line 11 setting the parent of the child context
The relative path of  resources/ParentSpringXMLConfig.xml in order to void the file not found exception .

The package and imports
package javaapplicationbasicspring;
import org.springframework.context.support.ClassPathXmlApplicationContext
The files structure is as follow :