javax.enterprise.inject
Interface Instance<T>

All Superinterfaces:

java.lang.Iterable<T>, Provider<T>

All Known Implementing Classes:

InstanceImpl

public interface Instance<T>
extends Provider<T>, java.lang.Iterable<T>

Factory to create instances of a bean.

Example: injecting and using Instance

 package example;

 import javax.enterprise.inject.*;
 import javax.servlet.*;

 public class MyServlet extends GenericServlet {
  @Obtains @Instance<MyBean> _beanFactory;

  public void service(ServletRequest req, ServletResponse res)
  {
    MyBean bean = _beanFactory.get();
  }
 }
 

See Also:

javax.event.Event

Method Summary

boolean	isAmbiguous() Test if there are multiple beans that match the instance.
boolean	isUnsatisfied() Test if there are any beans that match the instance.
Instance<T>	select(java.lang.annotation.Annotation... qualifiers) Restricts the instance given a set of qualifiers
<U extends T> Instance<U>	select(java.lang.Class<U> subtype, java.lang.annotation.Annotation... qualifiers) Restricts the instance to a subtype and bindings.
<U extends T> Instance<U>	select(TypeLiteral<U> subtype, java.lang.annotation.Annotation... qualifiers) Restricts the instance to a subtype and bindings.

Methods inherited from interface javax.inject.Provider

get

Methods inherited from interface java.lang.Iterable

iterator

Method Detail

select

Instance<T> select(java.lang.annotation.Annotation... qualifiers)

Restricts the instance given a set of qualifiers

select

<U extends T> Instance<U> select(java.lang.Class<U> subtype,
                                 java.lang.annotation.Annotation... qualifiers)

Restricts the instance to a subtype and bindings.

select

<U extends T> Instance<U> select(TypeLiteral<U> subtype,
                                 java.lang.annotation.Annotation... qualifiers)

Restricts the instance to a subtype and bindings.

isUnsatisfied

boolean isUnsatisfied()

Test if there are any beans that match the instance.

isAmbiguous

boolean isAmbiguous()

Test if there are multiple beans that match the instance.