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package org.glassfish.jersey.internal.inject;
import java.lang.reflect.Field;
import java.lang.reflect.Type;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import javax.inject.Inject;
import javax.inject.Singleton;
import javax.ws.rs.core.Context;
import org.glassfish.jersey.internal.util.ReflectionHelper;
import org.glassfish.jersey.internal.util.collection.LazyValue;
import org.glassfish.jersey.internal.util.collection.Value;
import org.glassfish.jersey.internal.util.collection.Values;
import org.glassfish.jersey.process.internal.RequestScoped;
import org.glassfish.hk2.api.ActiveDescriptor;
import org.glassfish.hk2.api.Factory;
import org.glassfish.hk2.api.Injectee;
import org.glassfish.hk2.api.InjectionResolver;
import org.glassfish.hk2.api.ServiceHandle;
import org.glassfish.hk2.api.ServiceLocator;
import org.glassfish.hk2.api.TypeLiteral;
import org.glassfish.hk2.utilities.AbstractActiveDescriptor;
import org.glassfish.hk2.utilities.BuilderHelper;
import org.glassfish.hk2.utilities.InjecteeImpl;
import org.glassfish.hk2.utilities.binding.AbstractBinder;
import org.glassfish.hk2.utilities.cache.Cache;
import org.glassfish.hk2.utilities.cache.Computable;
/**
* Injection resolver for {@link Context @Context} injection annotation.
*
* @author Marek Potociar (marek.potociar at oracle.com)
* @author Jakub Podlesak (jakub.podlesak at oracle.com)
*/
@Singleton
public class ContextInjectionResolver implements InjectionResolver {
/**
* Context injection resolver HK2 binder.
*/
public static final class Binder extends AbstractBinder {
@Override
protected void configure() {
// @Context
bind(ContextInjectionResolver.class).to(new TypeLiteral>() {
}).in(Singleton.class);
}
}
@Inject
private ServiceLocator serviceLocator;
private final Cache> descriptorCache
= new Cache>(new Computable>() {
@Override
public ActiveDescriptor compute(Injectee key) {
return serviceLocator.getInjecteeDescriptor(key);
}
});
@Override
public Object resolve(Injectee injectee, ServiceHandle root) {
Type requiredType = injectee.getRequiredType();
boolean isHk2Factory = ReflectionHelper.isSubClassOf(requiredType, Factory.class);
Injectee newInjectee;
if (isHk2Factory) {
newInjectee = getFactoryInjectee(injectee, ReflectionHelper.getTypeArgument(requiredType, 0));
} else {
newInjectee = foreignRequestScopedInjecteeCache.compute(injectee);
}
ActiveDescriptor ad = descriptorCache.compute(newInjectee);
if (ad != null) {
final ServiceHandle handle = serviceLocator.getServiceHandle(ad, newInjectee);
if (isHk2Factory) {
return asFactory(handle);
} else {
return handle.getService();
}
}
return null;
}
private Factory asFactory(final ServiceHandle handle) {
return new Factory() {
@Override
public Object provide() {
return handle.getService();
}
@Override
public void dispose(Object instance) {
//not used
}
};
}
private Injectee getFactoryInjectee(final Injectee injectee, final Type requiredType) {
return new RequiredTypeOverridingInjectee(injectee, requiredType);
}
private static class RequiredTypeOverridingInjectee extends InjecteeImpl {
private static final long serialVersionUID = -3740895548611880187L;
private RequiredTypeOverridingInjectee(final Injectee injectee, final Type requiredType) {
super(injectee);
setRequiredType(requiredType);
}
}
private static class DescriptorOverridingInjectee extends InjecteeImpl {
private static final long serialVersionUID = -3740895548611880189L;
private DescriptorOverridingInjectee(final Injectee injectee, final ActiveDescriptor descriptor) {
super(injectee);
setInjecteeDescriptor(descriptor);
}
}
@Override
public boolean isConstructorParameterIndicator() {
return true;
}
@Override
public boolean isMethodParameterIndicator() {
return false;
}
private final Cache foreignRequestScopedInjecteeCache =
new Cache(new Computable() {
@Override
public Injectee compute(Injectee injectee) {
if (injectee.getParent() != null) {
if (Field.class.isAssignableFrom(injectee.getParent().getClass())) {
Field f = (Field) injectee.getParent();
if (foreignRequestScopedComponents.get().contains(f.getDeclaringClass())) {
final Class clazz = f.getType();
if (serviceLocator.getServiceHandle(clazz).getActiveDescriptor().getScopeAnnotation()
== RequestScoped.class) {
final AbstractActiveDescriptor