org.apache.webbeans.container
Class InjectionResolver

java.lang.Object
  org.apache.webbeans.container.InjectionResolver

public class InjectionResolver
extends Object

Injection point resolver class.

It is a singleton class per BeanManager. It is responsible for resolving the bean instances at the injection points for its bean manager.

Version:

$Rev: 1682658 $ $Date: 2015-05-30 23:27:41 +0200 (Sat, 30 May 2015) $

Constructor Summary

InjectionResolver(WebBeansContext webBeansContext)
Creates a new injection resolve for given bean manager.

Method Summary

void	checkInjectionPoint(javax.enterprise.inject.spi.InjectionPoint injectionPoint) Check that a valid enabled bean exists in the deployment for the given injection point definition.
void	checkInjectionPointType(javax.enterprise.inject.spi.InjectionPoint injectionPoint) Check the type of the injection point.
void	clearCaches() Clear caches.
<X> Set<javax.enterprise.inject.spi.Bean<? extends X>>	findByAlternatives(Set<javax.enterprise.inject.spi.Bean<? extends X>> beans) Gets alternatives from set.
javax.enterprise.inject.spi.Bean<?>	getInjectionPointBean(javax.enterprise.inject.spi.InjectionPoint injectionPoint) Returns bean for injection point.
Set<javax.enterprise.inject.spi.Bean<?>>	implResolveByName(String name) Returns set of beans for given bean name.
Set<javax.enterprise.inject.spi.Bean<?>>	implResolveByType(boolean isDelegate, Type injectionPointType, Annotation... qualifiers) Resolution by type.
Set<javax.enterprise.inject.spi.Bean<?>>	implResolveByType(boolean isDelegate, Type injectionPointType, Class<?> injectionPointClass, Annotation... qualifiers) Resolution by type.
<X> javax.enterprise.inject.spi.Bean<? extends X>	resolve(Set<javax.enterprise.inject.spi.Bean<? extends X>> beans, javax.enterprise.inject.spi.InjectionPoint injectionPoint) resolve any ambiguity by checking for Alternatives.
<X> Set<javax.enterprise.inject.spi.Bean<? extends X>>	resolveAll(Set<javax.enterprise.inject.spi.Bean<? extends X>> beans)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

InjectionResolver

public InjectionResolver(WebBeansContext webBeansContext)

Creates a new injection resolve for given bean manager.

Parameters:

webBeansContext - WebBeansContext

Method Detail

clearCaches

public void clearCaches()

Clear caches.

checkInjectionPointType

public void checkInjectionPointType(javax.enterprise.inject.spi.InjectionPoint injectionPoint)

Check the type of the injection point.

Injection point type can not be TypeVariable.

Parameters:

injectionPoint - injection point

Throws:

WebBeansConfigurationException - if not obey the rule

checkInjectionPoint

public void checkInjectionPoint(javax.enterprise.inject.spi.InjectionPoint injectionPoint)

Check that a valid enabled bean exists in the deployment for the given injection point definition.

Parameters:

injectionPoint - injection point

Throws:

WebBeansConfigurationException - If bean is not available in the current deployment for given injection

getInjectionPointBean

public javax.enterprise.inject.spi.Bean<?> getInjectionPointBean(javax.enterprise.inject.spi.InjectionPoint injectionPoint)

Returns bean for injection point.

Parameters:

injectionPoint - injection point declaration

Returns:

bean for injection point

implResolveByName

public Set<javax.enterprise.inject.spi.Bean<?>> implResolveByName(String name)

Returns set of beans for given bean name.

Parameters:

name - bean name

Returns:

set of beans for given bean name

implResolveByType

public Set<javax.enterprise.inject.spi.Bean<?>> implResolveByType(boolean isDelegate,
                                                                  Type injectionPointType,
                                                                  Annotation... qualifiers)

Resolution by type.

Parameters:

isDelegate - whether the InjectionPoint is for a Delegate

injectionPointType - injection point api type

qualifiers - qualifiers of the injection point

Returns:

set of resolved beans

implResolveByType

public Set<javax.enterprise.inject.spi.Bean<?>> implResolveByType(boolean isDelegate,
                                                                  Type injectionPointType,
                                                                  Class<?> injectionPointClass,
                                                                  Annotation... qualifiers)

Resolution by type.

Parameters:

isDelegate - whether the InjectionPoint is for a Delegate

injectionPointType - injection point api type

qualifiers - qualifiers of the injection point

Returns:

set of resolved beans

findByAlternatives

public <X> Set<javax.enterprise.inject.spi.Bean<? extends X>> findByAlternatives(Set<javax.enterprise.inject.spi.Bean<? extends X>> beans)

Gets alternatives from set.

Parameters:

beans - resolved set

Returns:

contains alternatives

resolve

public <X> javax.enterprise.inject.spi.Bean<? extends X> resolve(Set<javax.enterprise.inject.spi.Bean<? extends X>> beans,
                                                                 javax.enterprise.inject.spi.InjectionPoint injectionPoint)

resolve any ambiguity by checking for Alternatives. If any @Alternative exists, then we pick the one with the highest priority.

Type Parameters:

X -

Parameters:

beans -

injectionPoint - only used for logging. Can be null.

Returns:

the single resolved bean, null if none is activated

Throws:

javax.enterprise.inject.AmbiguousResolutionException - if more than 1 bean is active

resolveAll

public <X> Set<javax.enterprise.inject.spi.Bean<? extends X>> resolveAll(Set<javax.enterprise.inject.spi.Bean<? extends X>> beans)