[OmniFaces utilities (2.0)] Get the current injection point within a dynamic producer Bean

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[OmniFaces utilities] The getCurrentInjectionPoint() gets the current injection point when called from a context where injection is taking place (e.g. from a producer).This is mostly intended to be used from within a dynamic producer Bean. For a "regular" producer (using Produces) an InjectionPoint can either be injected into the bean that contains the producer method, or directly provided as argument of said method.

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Method:

Usage:

JSF page

...

<h:body>   

 <h:form>

  <h:commandButton value="BeanA" action="#{beanA.randomNumberA()}"/>

 </h:form>

 <h:form>

  <h:commandButton value="BeanB" action="#{beanB.randomNumberB()}"/>

 </h:form>

</h:body>

...

DynamicProducer (see Dynamic CDI producers, 1 August 2014, by: Arjan Tijms)

import javax.enterprise.inject.spi.InjectionPoint;

import org.omnifaces.util.Beans;

public class DynamicIntegerProducer implements Bean<Integer> {

 ...

 @Override

 public Integer create(CreationalContext<Integer> creationalContext) {

  InjectionPoint injectionPoint = Beans.getCurrentInjectionPoint(creationalContext);

  System.out.println("Current Injection Point: " + injectionPoint);

  // do something with the injection point

  return new Random().nextInt(1000);

 }

 ...

}

BeanA

@Named

@RequestScoped

public class BeanA {

 @Inject

 private Integer rndA;

 public void randomNumberA() {

  System.out.println("Injected random number in BeanA: " + rndA);

 }

}

BeanB

@Named

@RequestScoped

public class BeanB {

   

 @Inject

 private Integer rndB;

    

 public void randomNumberB() {

  System.out.println("Injected random number in BeanB: " + rndB);

 }   

}

Now, press button BeanA and afterwards button, BeanB. You will see this output:

Current Injection Point: [BackedAnnotatedField] @Inject private some.beans.BeanA.rndA

Injected random number in BeanA: 538

Current Injection Point: [BackedAnnotatedField] @Inject private some.beans.BeanB.rndB

Injected random number in BeanB: 266

API GH-SOURCE GH-EXAMPLE[CDIDynamicProducer]