indip: use bean within another bean

I wanted to use a bean within another bean. And I wanted the most elegant way to achieve this.

Here’s what I got:

define the beans in the faces-config.xml as follows (notice the color codings, to show references!)

<managed-bean>
<managed-bean-name>childBean</managed-bean-name>
<managed-bean-class>com.abb.xpages.beans.ChildBean</managed-bean-class>
<managed-bean-scope>request</managed-bean-scope>
</managed-bean>
<managed-bean>
<managed-bean-name>ParentBean</managed-bean-name>
<managed-bean-class>com.abb.xpages.beans.ParentBean</managed-bean-class>
<managed-bean-scope>request</managed-bean-scope>
<managed-property>
<property-name>childBeanX</property-name>
<value>#{childBean}</value>
</managed-property>
</managed-bean>

then in your “parentBean” you “inject” the childBean as follows:

ChildBean childBean = null;

public void setChildBeanX(ChildBean bean){

childBean = bean;

}

then you can access the childBean in other places in your parentBean,

Example method from the parentBean:

public String getColor(){

return childBean.getColor();

}

As always I hope someone might find this useful when struggling around with beans! Also check out my other recent post regarding scope setting if you require notes objects being serialized.

Leave a Reply Cancel reply