@ApplicationScoped
public class KnitProducer
{
   @Inject
   Instance<PurlKnit> purlKnit;

   @Inject
   KnittingOrder knittingOrder;

   @Produces
   @ApplicationScoped
   public KnitPurl getKnitPurl() {
      if (knittingOrder.isKnitFirst()) {

         Purl purl = purlKnit.get();
         purl.toString();

         return new KnitPurl(purl);
      }
      else {
         return new KnitPurl(new Purl());
      }
   }
}

@ApplicationScoped
public class PurlProducer {
   @Inject
   Instance<KnitPurl> knitPurl;

   @Inject
   KnittingOrder knittingOrder;

   @Produces
   @ApplicationScoped
   public PurlKnit getPurlKnit() {

      if (!knittingOrder.isKnitFirst()) {

         KnitPurl knit = knitPurl.get();
         knit.toString();

         return new PurlKnit(knit);
      }
      else {
         return new PurlKnit(new Knit());
      }
   }
}

@RequestScoped
public class KnittingOrder
{
   private boolean knitFirst;

   public boolean isKnitFirst()
   {
      return knitFirst;
   }

   public void setKnitFirst(boolean knitFirst)
   {
      this.knitFirst = knitFirst;
   }
}

@Typed({}) public class Purl ...
@Typed({}) public class PurlKnit extends Purl ...
@Typed({}) public class Knit ...
@Typed({}) public class KnitPurl extends Knit ...