001 /*****************************************************************************
002 * Copyright (c) PicoContainer Organization. All rights reserved. *
003 * ------------------------------------------------------------------------- *
004 * The software in this package is published under the terms of the BSD *
005 * style license a copy of which has been included with this distribution in *
006 * the LICENSE.txt file. *
007 * *
008 * Idea by Rachel Davies, Original code by Aslak Hellesoy and Paul Hammant *
009 *****************************************************************************/
010
011 package org.picocontainer.behaviors;
012
013 import org.picocontainer.ComponentAdapter;
014 import org.picocontainer.Parameter;
015 import org.picocontainer.PicoCompositionException;
016 import org.picocontainer.Characteristics;
017 import org.picocontainer.ComponentMonitor;
018 import org.picocontainer.behaviors.AbstractBehaviorFactory;
019 import org.picocontainer.references.SimpleReference;
020 import org.picocontainer.LifecycleStrategy;
021 import org.picocontainer.ObjectReference;
022
023 import java.util.Properties;
024
025 /**
026 * factory class creating cached behaviours
027 * @author Aslak Hellesøy
028 * @author <a href="Rafal.Krzewski">rafal@caltha.pl</a>
029 * @author Konstantin Pribluda
030 */
031 @SuppressWarnings("serial")
032 public class Caching extends AbstractBehaviorFactory {
033
034 public <T> ComponentAdapter<T> createComponentAdapter(
035 ComponentMonitor componentMonitor,
036 LifecycleStrategy lifecycleStrategy,
037 Properties componentProperties, Object componentKey,
038 Class<T> componentImplementation, Parameter... parameters)
039 throws PicoCompositionException {
040 if (removePropertiesIfPresent(componentProperties,
041 Characteristics.NO_CACHE)) {
042 return super.createComponentAdapter(componentMonitor,
043 lifecycleStrategy, componentProperties, componentKey,
044 componentImplementation, parameters);
045 }
046 removePropertiesIfPresent(componentProperties, Characteristics.CACHE);
047 return new Cached<T>(super.createComponentAdapter(componentMonitor,
048 lifecycleStrategy, componentProperties, componentKey,
049 componentImplementation, parameters), newObjectReference());
050
051 }
052
053 public <T> ComponentAdapter<T> addComponentAdapter(
054 ComponentMonitor componentMonitor,
055 LifecycleStrategy lifecycleStrategy,
056 Properties componentProperties, ComponentAdapter<T> adapter) {
057 if (removePropertiesIfPresent(componentProperties,
058 Characteristics.NO_CACHE)) {
059 return super.addComponentAdapter(componentMonitor,
060 lifecycleStrategy, componentProperties, adapter);
061 }
062 removePropertiesIfPresent(componentProperties, Characteristics.CACHE);
063 return new Cached<T>(super.addComponentAdapter(componentMonitor,
064 lifecycleStrategy, componentProperties, adapter),
065 newObjectReference());
066 }
067
068 protected <T> ObjectReference<T> newObjectReference() {
069 return new SimpleReference<T>();
070 }
071 }