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package org.glassfish.jersey.inject.hk2;
import java.lang.annotation.Annotation;
import javax.inject.Singleton;
import org.glassfish.hk2.api.ActiveDescriptor;
import org.glassfish.hk2.api.Context;
import org.glassfish.hk2.api.ServiceHandle;
/**
* The context keeping the objects created in {@link ProxiableSingleton} scope.
*/
@Singleton
public class ProxiableSingletonContext implements Context<ProxiableSingleton> {
@Override
public Class<? extends Annotation> getScope() {
return ProxiableSingleton.class;
}
@Override
public <U> U findOrCreate(ActiveDescriptor<U> activeDescriptor, ServiceHandle<?> root) {
U cached = activeDescriptor.getCache();
if (cached != null) {
return cached;
}
cached = activeDescriptor.create(root);
activeDescriptor.setCache(cached);
return cached;
}
@Override
public boolean containsKey(ActiveDescriptor<?> descriptor) {
return descriptor.isCacheSet();
}
@SuppressWarnings("unchecked")
@Override
public void destroyOne(ActiveDescriptor<?> descriptor) {
if (!descriptor.isCacheSet()) {
return;
}
Object value = descriptor.getCache();
descriptor.releaseCache();
((ActiveDescriptor<Object>) descriptor).dispose(value);
}
@Override
public boolean supportsNullCreation() {
return false;
}
@Override
public boolean isActive() {
return true;
}
@Override
public void shutdown() {
}
}