Reminder of Wirebox Dependency Injection Lifecycle

I remember reading it in the Wirebox Ref Card, but I actually ran into an issue with Wirebox dependency injection and a race condition today.  I wanted to blog about it just in case you started with Wirebox without reading the documentation end-to-end ;)

When you are using Wirebox mixin injection to autowire properties, dependencies are not injected until after your pseudo-constructor is called.  Here is an example that will fail:

 component accessors="true" {  
   property name="myDAO" inject="";  
   public function init() {  
     getMyDAO().myMethod();  
   }  
 }  

This will cause an error since myDAO has not been injected into the component before init() is called.  The solution is pretty simple:

 component accessors="true" {  
   property name="myDAO" inject="";  
   public function init () {  
   }  
   public function postInit() onDiComplete {  
    getMyDAO().myMethod();   
   }  
 }

Adding the onDiComplete annotation to the postInit() method tells Wirebox to run the method after it has instantiated the object and injected any dependencies.  I did notice that the method must be public which is unfortunate, but it makes sense.  This simple example is pretty useless, but in my case I needed to store a query into a singleton on instantiation so this was just the ticket.