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package org.glassfish.jersey.ext.cdi1x.servlet.internal;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import javax.enterprise.context.Dependent;
import javax.enterprise.context.spi.CreationalContext;
import javax.enterprise.event.Observes;
import javax.enterprise.inject.Any;
import javax.enterprise.inject.Default;
import javax.enterprise.inject.spi.AfterBeanDiscovery;
import javax.enterprise.inject.spi.AnnotatedType;
import javax.enterprise.inject.spi.Bean;
import javax.enterprise.inject.spi.BeanManager;
import javax.enterprise.inject.spi.BeforeBeanDiscovery;
import javax.enterprise.inject.spi.Extension;
import javax.enterprise.inject.spi.InjectionPoint;
import javax.enterprise.inject.spi.InjectionTarget;
import javax.enterprise.util.AnnotationLiteral;
/**
* CDI extension to register {@link CdiExternalRequestScope}.
*
* @author Jakub Podlesak (jakub.podlesak at oracle.com)
*/
public class CdiExternalRequestScopeExtension implements Extension {
public static final AnnotationLiteral<Default> DEFAULT_ANNOTATION_LITERAL = new AnnotationLiteral<Default>() {};
public static final AnnotationLiteral<Any> ANY_ANNOTATION_LITERAL = new AnnotationLiteral<Any>() {};
private AnnotatedType<CdiExternalRequestScope> requestScopeType;
/**
* Register our external request scope.
*
* @param beforeBeanDiscoveryEvent CDI bootstrap event.
* @param beanManager current bean manager.
*/
private void beforeBeanDiscovery(@Observes BeforeBeanDiscovery beforeBeanDiscoveryEvent, final BeanManager beanManager) {
requestScopeType = beanManager.createAnnotatedType(CdiExternalRequestScope.class);
beforeBeanDiscoveryEvent.addAnnotatedType(requestScopeType);
}
/**
* Register a CDI bean for the external scope.
*
* @param afterBeanDiscovery CDI bootstrap event.
* @param beanManager current bean manager
*/
private void afterBeanDiscovery(@Observes AfterBeanDiscovery afterBeanDiscovery, BeanManager beanManager) {
// we need the injection target so that CDI could instantiate the original interceptor for us
final InjectionTarget<CdiExternalRequestScope> interceptorTarget = beanManager.createInjectionTarget(requestScopeType);
afterBeanDiscovery.addBean(new Bean<CdiExternalRequestScope>() {
@Override
public Class<?> getBeanClass() {
return CdiExternalRequestScope.class;
}
@Override
public Set<InjectionPoint> getInjectionPoints() {
return interceptorTarget.getInjectionPoints();
}
@Override
public String getName() {
return "CdiExternalRequestScope";
}
@Override
public Set<Annotation> getQualifiers() {
return new HashSet<Annotation>() {{
add(DEFAULT_ANNOTATION_LITERAL);
add(ANY_ANNOTATION_LITERAL);
}};
}
@Override
public Class<? extends Annotation> getScope() {
return Dependent.class;
}
@Override
public Set<Class<? extends Annotation>> getStereotypes() {
return Collections.emptySet();
}
@Override
public Set<Type> getTypes() {
return new HashSet<Type>() {{
add(CdiExternalRequestScope.class);
add(Object.class);
}};
}
@Override
public boolean isAlternative() {
return false;
}
@Override
public boolean isNullable() {
return false;
}
@Override
public CdiExternalRequestScope create(CreationalContext<CdiExternalRequestScope> ctx) {
final CdiExternalRequestScope result = interceptorTarget.produce(ctx);
interceptorTarget.inject(result, ctx);
interceptorTarget.postConstruct(result);
return result;
}
@Override
public void destroy(CdiExternalRequestScope instance,
CreationalContext<CdiExternalRequestScope> ctx) {
interceptorTarget.preDestroy(instance);
interceptorTarget.dispose(instance);
ctx.release();
}
});
}
}