Examples of javax.enterprise.inject.spi.BeanManager

javax.enterprise.inject.spi.BeanManager
Allows a portable extension to interact directly with the container. Provides operations for obtaining contextual references for beans, along with many other operations of use to portable extensions.

Any bean may obtain an instance of BeanManager by injecting it:
```
 @Inject BeanManager manager; 
```
Java EE components may obtain an instance of BeanManager from {@linkplain javax.naming JNDI} by looking up the name{@code java:comp/BeanManager}.

Any operation of BeanManager may be called at any time during the execution of the application.
@author Gavin King @author Pete Muir @author Clint Popetz @author David Allen


   private void fireResourceModified()
   {
      if (resourceFactory != null)
      {
         BeanManager manager = resourceFactory.getManagerInstance();
         if (manager != null)
         {
            manager.fireEvent(new ResourceModified(this));
         }
      }
   }

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   private void fireResourceCreated()
   {
      if (resourceFactory != null)
      {
         BeanManager manager = resourceFactory.getManagerInstance();
         if (manager != null)
         {
            manager.fireEvent(new ResourceCreated(this));
         }
      }
   }

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   private void fireResourceDeleted()
   {
      if (resourceFactory != null)
      {
         BeanManager manager = resourceFactory.getManagerInstance();
         if (manager != null)
         {
            manager.fireEvent(new ResourceDeleted(this));
         }
      }
   }

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        ServletContext servletContext = null;
        if (context instanceof ServletContext) {
            servletContext = (ServletContext) context;
        }


        BeanManager manager = getBeanManager(servletContext);


        if (manager != null) {


            Set<Bean<?>> beans = manager.getBeans(clazz);


            for (Bean<?> bean : beans) {


                CreationalContext<?> cc = manager.createCreationalContext(bean);


                Object reference = manager.getReference(bean, clazz, cc);
                result.add((T) reference);


            }
        }

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    }


    private BeanManager getBeanManager(ServletContext servletContext) {


        BeanManager beanManager = null;


        // try to find in ServletContext first
        if (servletContext != null) {
            beanManager = (BeanManager) servletContext.getAttribute(BeanManager.class.getName());
        }

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    }
  }


  public static BeanManager lookupBeanManager() {
    InitialContext ctx = null;
    BeanManager bm = null;


    try {
      ctx = new InitialContext();
      bm = (BeanManager) ctx.lookup(BEAN_MANAGER_JNDI);
    }

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import org.jboss.errai.bus.server.servlet.ServiceLocator;


public class CDIServiceLocator implements ServiceLocator {


  public ErraiService locateService() {
    BeanManager beanManager = Util.lookupBeanManager();


    Set<Bean<?>> beans = beanManager.getBeans(ErraiService.class);
    Bean<?> bean = beanManager.resolve(beans);
    CreationalContext<?> context = beanManager.createCreationalContext(bean);


    return (ErraiService) beanManager.getReference(bean, ErraiService.class, context);


  }

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            return null;
        }
    }


    public static Object getBeanByName(String name) {
        BeanManager bm = getBeanManager();
        Bean bean = bm.getBeans(name).iterator().next();
        CreationalContext ctx = bm.createCreationalContext(bean);
        Object o = bm.getReference(bean, bean.getBeanClass(), ctx);
        return o;
    }

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        Object o = bm.getReference(bean, bean.getBeanClass(), ctx);
        return o;
    }


    public static Object getBeanByType(Class type) {
        BeanManager bm = getBeanManager();
        Bean bean = bm.getBeans(type).iterator().next();
        CreationalContext ctx = bm.createCreationalContext(bean);
        Object o = bm.getReference(bean, bean.getBeanClass(), ctx);
        return o;
    }

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   public Object[] resolve(Method method)
   {
      Object[] values = new Object[method.getParameterTypes().length];
      if (SecurityActions.isClassPresent(ANNOTATION_NAME))
      {
         BeanManager beanManager = getBeanManager();
         if (beanManager == null)
         {
            return values;
         }
         Class<?>[] parameterTypes = method.getParameterTypes();

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