/*****************************************************************************
* Copyright (C) PicoContainer Organization. All rights reserved. *
* ------------------------------------------------------------------------- *
* The software in this package is published under the terms of the BSD *
* style license a copy of which has been included with this distribution in *
* the LICENSE.txt file. *
* *
* Original code by the committers *
*****************************************************************************/
package org.picocontainer.alternatives;
import org.picocontainer.ComponentAdapter;
import org.picocontainer.MutablePicoContainer;
import org.picocontainer.Parameter;
import org.picocontainer.PicoContainer;
import org.picocontainer.PicoRegistrationException;
import org.picocontainer.LifecycleManager;
import org.picocontainer.defaults.CachingComponentAdapter;
import org.picocontainer.defaults.CachingComponentAdapterFactory;
import org.picocontainer.defaults.ComponentAdapterFactory;
import org.picocontainer.defaults.DefaultComponentAdapterFactory;
import org.picocontainer.defaults.DefaultLifecycleManager;
import java.io.Serializable;
/**
* This special MutablePicoContainer hides implementations of components if the key is an interface.
* It's very simple. Instances that are registered directly and components registered without key
* are not hidden.
*
* @author Paul Hammant
* @version $Revision: 1845 $
* @since 1.1
*/
public class ImplementationHidingCachingPicoContainer extends AbstractDelegatingMutablePicoContainer implements Serializable {
private CachingComponentAdapterFactory caf;
private LifecycleManager lifecycleManager;
/**
* Creates a new container with a parent container.
*/
public ImplementationHidingCachingPicoContainer(ComponentAdapterFactory caf, PicoContainer parent) {
this(parent, new CachingComponentAdapterFactory(caf), new DefaultLifecycleManager());
}
public ImplementationHidingCachingPicoContainer(ComponentAdapterFactory caf, PicoContainer parent, LifecycleManager lifecyleManager) {
this(parent, new CachingComponentAdapterFactory(caf), lifecyleManager);
}
private ImplementationHidingCachingPicoContainer(PicoContainer parent, CachingComponentAdapterFactory caf, LifecycleManager lifecycleManager) {
super(new ImplementationHidingPicoContainer(caf, parent, lifecycleManager));
this.caf = caf;
this.lifecycleManager = lifecycleManager;
}
/**
* Creates a new container with a parent container.
*/
public ImplementationHidingCachingPicoContainer(PicoContainer parent) {
this(new DefaultComponentAdapterFactory(), parent);
}
/**
* Creates a new container with no parent container.
*/
public ImplementationHidingCachingPicoContainer() {
this(null);
}
public ComponentAdapter registerComponentImplementation(Object componentKey, Class componentImplementation) throws PicoRegistrationException {
if (componentKey instanceof Class) {
Class clazz = (Class) componentKey;
if (clazz.isInterface()) {
ComponentAdapter delegate = caf.createComponentAdapter(componentKey, componentImplementation, null);
return getDelegate().registerComponent(new CachingComponentAdapter(new ImplementationHidingComponentAdapter(delegate, true)));
}
}
return getDelegate().registerComponentImplementation(componentKey, componentImplementation);
}
public ComponentAdapter registerComponentImplementation(Object componentKey, Class componentImplementation, Parameter[] parameters) throws PicoRegistrationException {
if (componentKey instanceof Class) {
Class clazz = (Class) componentKey;
if (clazz.isInterface()) {
ComponentAdapter delegate = caf.createComponentAdapter(componentKey, componentImplementation, parameters);
ImplementationHidingComponentAdapter ihDelegate = new ImplementationHidingComponentAdapter(delegate, true);
return getDelegate().registerComponent(new CachingComponentAdapter(ihDelegate));
}
}
return getDelegate().registerComponentImplementation(componentKey, componentImplementation, parameters);
}
public MutablePicoContainer makeChildContainer() {
ImplementationHidingCachingPicoContainer pc = new ImplementationHidingCachingPicoContainer(this, caf, lifecycleManager);
getDelegate().addChildContainer(pc);
return pc;
}
}