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package com.sun.hk2.component;
import org.jvnet.hk2.component.ComponentException;
import org.jvnet.hk2.component.Habitat;
import org.jvnet.hk2.component.Inhabitant;
import org.jvnet.hk2.component.MultiMap;
import java.security.AccessController;
import java.security.PrivilegedAction;
/**
* Creates an object from its constructor.
* @author Kohsuke Kawaguchi
*/
@SuppressWarnings("unchecked")
public class ConstructorCreator<T> extends AbstractCreatorImpl<T> {
// private final ScopeInstance singletonScope;
public ConstructorCreator(Class<T> type, Habitat habitat, MultiMap<String,String> metadata) {
super(type, habitat, metadata);
// singletonScope = habitat.singletonScope;
}
public T create(Inhabitant onBehalfOf) throws ComponentException {
try {
return type.newInstance();
} catch (InstantiationException e) {
throw new ComponentException("Failed to create "+type,e);
} catch (IllegalAccessException e) {
throw new ComponentException("Failed to create "+type,e);
} catch (LinkageError e) {
throw new ComponentException("Failed to create "+type,e);
} catch (RuntimeException e) {
throw new ComponentException("Failed to create "+type,e);
}
}
public void initialize(final T t, final Inhabitant onBehalfOf) throws ComponentException {
super.initialize(t, onBehalfOf);
// Scoped scoped = t.getClass().getAnnotation(Scoped.class);
// ScopeInstance si = (scoped == null ? singletonScope : getScope(scoped));
if (System.getSecurityManager() != null) {
AccessController.doPrivileged(new PrivilegedAction() {
// privileged required for running with SecurityManager ON
public java.lang.Object run() {
inject(habitat, t, onBehalfOf);
return null;
}
});
} else {
inject(habitat, t, onBehalfOf);
}
}
// /**
// * Determines the {@link ScopeInstance} that stores the component.
// *
// * @return
// * null for prototype scope. (Note that in {@link Scope#current()}
// * null return value is an error.)
// */
// private ScopeInstance getScope(Scoped svc) throws ComponentException {
// Class<? extends Scope> s = svc.value();
// // for performance reason and to avoid infinite recursion,
// // recognize these two fundamental built-in scopes and process them differently.
// if(s==Singleton.class)
// return singletonScope;
// if(s==PerLookup.class)
// return null;
//
// // for all the other scopes, including user-defined ones.
// Scope scope = habitat.getByType(s);
// ScopeInstance si = scope.current();
// if(si==null) // scope is an extension point, so beware for broken implementations
// throw new ComponentException(scope+" returned null from the current() method");
// return si;
// }
}