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
011package org.picocontainer.behaviors;
012
013import org.picocontainer.ComponentAdapter;
014import org.picocontainer.Parameter;
015import org.picocontainer.PicoCompositionException;
016import org.picocontainer.Characteristics;
017import org.picocontainer.ComponentMonitor;
018import org.picocontainer.behaviors.AbstractBehaviorFactory;
019import org.picocontainer.references.SimpleReference;
020import org.picocontainer.LifecycleStrategy;
021
022import java.util.Properties;
023
024/**
025 * factory class creating cached behaviours
026 * @author Aslak Hellesøy
027 * @author <a href="Rafal.Krzewski">rafal@caltha.pl</a>
028 * @author Konstantin Pribluda
029 */
030@SuppressWarnings("serial")
031public class Caching extends AbstractBehaviorFactory {
032
033    public <T> ComponentAdapter<T> createComponentAdapter(
034                        ComponentMonitor componentMonitor,
035                        LifecycleStrategy lifecycleStrategy,
036                        Properties componentProperties, Object componentKey,
037                        Class<T> componentImplementation, Parameter... parameters)
038                        throws PicoCompositionException {
039                if (removePropertiesIfPresent(componentProperties,
040                                Characteristics.NO_CACHE)) {
041                        return super.createComponentAdapter(componentMonitor,
042                                        lifecycleStrategy, componentProperties, componentKey,
043                                        componentImplementation, parameters);
044                }
045                removePropertiesIfPresent(componentProperties, Characteristics.CACHE);
046        return componentMonitor.newBehavior(new Cached<T>(super.createComponentAdapter(componentMonitor,
047                                lifecycleStrategy, componentProperties, componentKey,
048                                componentImplementation, parameters),
049                new SimpleReference<Stored.Instance<T>>()));
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        ComponentAdapter<T> delegate = super.addComponentAdapter(componentMonitor, lifecycleStrategy, componentProperties, adapter);
064        return componentMonitor.newBehavior(componentMonitor.newBehavior(new Cached<T>(delegate, new SimpleReference<Stored.Instance<T>>())));
065        }
066
067}