PicoContainer example source code file (AdaptiveBehaviorFactory.java)

This example PicoContainer source code file (AdaptiveBehaviorFactory.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - PicoContainer tags/keywords

adaptiveinjectionfactory, adaptiveinjectionfactory, behaviorfactory, class, class, componentfactory, componentfactory, implementationhidingbehaviorfactory, io, lifecyclestrategy, list, list, object, serializable, synchronizedbehaviorfactory, util

The PicoContainer AdaptiveBehaviorFactory.java source code

/*****************************************************************************
 * 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                                                          *
 *****************************************************************************/
package org.picocontainer.behaviors;

import org.picocontainer.ComponentAdapter;
import org.picocontainer.ComponentMonitor;
import org.picocontainer.LifecycleStrategy;
import org.picocontainer.Parameter;
import org.picocontainer.PicoCompositionException;
import org.picocontainer.Characteristics;
import org.picocontainer.ComponentFactory;
import org.picocontainer.BehaviorFactory;
import org.picocontainer.annotations.Cache;
import org.picocontainer.injectors.AdaptiveInjectionFactory;

import java.io.Serializable;
import java.util.List;
import java.util.ArrayList;
import java.util.Properties;

public class AdaptiveBehaviorFactory implements ComponentFactory, Serializable {

    public ComponentAdapter createComponentAdapter(ComponentMonitor componentMonitor,
                                                   LifecycleStrategy lifecycleStrategy,
                                                   Properties componentProperties,
                                                   Object componentKey,
                                                   Class componentImplementation,
                                                   Parameter... parameters) throws PicoCompositionException {
        List<ComponentFactory> list = new ArrayList();
        ComponentFactory lastFactory = makeInjectionFactory();
        processThreadSafe(componentProperties, list);
        processImplementationHiding(componentProperties, list);
        processCachedInstance(componentProperties, componentImplementation, list);

        //Instantiate Chain of ComponentFactories
        for (ComponentFactory componentFactory : list) {
            if (lastFactory != null && componentFactory instanceof BehaviorFactory) {
                ((BehaviorFactory)componentFactory).forThis(lastFactory);
            }
            lastFactory = componentFactory;
        }

        return lastFactory.createComponentAdapter(componentMonitor,
                                                  lifecycleStrategy,
                                                  componentProperties,
                                                  componentKey,
                                                  componentImplementation,
                                                  parameters);
    }

    protected AdaptiveInjectionFactory makeInjectionFactory() {
        return new AdaptiveInjectionFactory();
    }

    protected void processThreadSafe(Properties componentProperties, List<ComponentFactory> list) {
        if (AbstractBehaviorFactory.removePropertiesIfPresent(componentProperties, Characteristics.THREAD_SAFE)) {
            list.add(new SynchronizedBehaviorFactory());
        }
    }

    protected void processCachedInstance(Properties componentProperties,
                                       Class componentImplementation,
                                       List<ComponentFactory> list) {
        if (AbstractBehaviorFactory.removePropertiesIfPresent(componentProperties, Characteristics.CACHE) ||
            componentImplementation.getAnnotation(Cache.class) != null) {
            list.add(new CachingBehaviorFactory());
        }
    }

    protected void processImplementationHiding(Properties componentProperties,
                                             List<ComponentFactory> list) {
        if (AbstractBehaviorFactory.removePropertiesIfPresent(componentProperties, Characteristics.HIDE_IMPL)) {
            list.add(new ImplementationHidingBehaviorFactory());
        }
    }

}