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package org.glassfish.cdi.hk2;
import java.lang.annotation.Annotation;
import java.lang.reflect.AnnotatedElement;
import java.lang.reflect.Field;
import java.util.HashSet;
import java.util.Set;
import javax.enterprise.inject.Default;
import javax.enterprise.inject.spi.Annotated;
import javax.enterprise.inject.spi.AnnotatedField;
import javax.enterprise.inject.spi.AnnotatedParameter;
import javax.enterprise.inject.spi.InjectionPoint;
import javax.inject.Named;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import org.glassfish.hk2.api.Injectee;
import org.glassfish.hk2.api.ServiceLocator;
import org.glassfish.hk2.utilities.InjecteeImpl;
import org.glassfish.hk2.utilities.NamedImpl;
/**
* Integration utilities
*
* @author jwells
*
*/
public class HK2IntegrationUtilities {
private final static String APP_SL_NAME = "java:app/hk2/ServiceLocator";
/**
* This method returns the proper ApplicationServiceLocator
* to use for CDI integration
*
* @return The application service loctor (will not return null)
* @throws AssertionError if no ServiceLocator can be found
*/
public static ServiceLocator getApplicationServiceLocator() {
try {
Context ic = new InitialContext();
return (ServiceLocator) ic.lookup(APP_SL_NAME);
}
catch (NamingException ne) {
return null;
}
}
private static Set<Annotation> getHK2Qualifiers(InjectionPoint injectionPoint) {
Set<Annotation> setQualifiers = injectionPoint.getQualifiers();
Set<Annotation> retVal = new HashSet<Annotation>();
for (Annotation anno : setQualifiers) {
if (anno.annotationType().equals(Default.class)) continue;
if (anno.annotationType().equals(Named.class)) {
Named named = (Named) anno;
if ("".equals(named.value())) {
Annotated annotated = injectionPoint.getAnnotated();
if (annotated instanceof AnnotatedField) {
AnnotatedField<?> annotatedField = (AnnotatedField<?>) annotated;
Field field = annotatedField.getJavaMember();
anno = new NamedImpl(field.getName());
}
}
}
retVal.add(anno);
}
return retVal;
}
public static Injectee convertInjectionPointToInjectee(InjectionPoint injectionPoint) {
InjecteeImpl retVal = new InjecteeImpl(injectionPoint.getType());
retVal.setRequiredQualifiers(getHK2Qualifiers(injectionPoint));
retVal.setParent((AnnotatedElement) injectionPoint.getMember()); // Also sets InjecteeClass
Annotated annotated = injectionPoint.getAnnotated();
if (annotated instanceof AnnotatedField) {
retVal.setPosition(-1);
}
else {
AnnotatedParameter<?> annotatedParameter = (AnnotatedParameter<?>) annotated;
retVal.setPosition(annotatedParameter.getPosition());
}
return retVal;
}
}