LifecycleManagersRegistry.java

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 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *  
 *   http://www.apache.org/licenses/LICENSE-2.0
 *  
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 *  software distributed under the License is distributed on an
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 *  KIND, either express or implied.  See the License for the
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package org.apache.wink.common.internal.lifecycle;

import java.util.Collections;
import java.util.LinkedList;
import java.util.List;

/**
 * Registry of LifecycleManagers
 */
public class LifecycleManagersRegistry {

    private LinkedList<LifecycleManager<?>> store                 =
                                                                      new LinkedList<LifecycleManager<?>>();
    @SuppressWarnings("unchecked")
    private LifecycleManager                defaultFactoryFactory = new DefaultLifecycleManager();

    public void setFactoryFactoryArray(LifecycleManager<?>[] factories) {
        for (LifecycleManager<?> factory : factories) {
            addFactoryFactory(factory);
        }
    }

    /**
     * Adds a OFFactory to the registry. The factory will be added with the
     * highest priority, meaning it will be invoked <tt>before</tt> the factory
     * that were already added.
     * 
     * @param factory
     */
    public void addFactoryFactory(LifecycleManager<?> factory) {
        store.addFirst(factory);
    }

    /**
     * Returns an ObjectFactory based on the object's instance.
     * 
     * @param object - object for which a ObjectFactory will be returned.
     * @return ObjectFactory
     */
    @SuppressWarnings("unchecked")
    public <T> ObjectFactory<T> getObjectFactory(T object) {
        for (LifecycleManager factoryFactory : store) {
            ObjectFactory objectFactory = factoryFactory.createObjectFactory(object);
            if (objectFactory != null) {
                return objectFactory;
            }
        }
        return defaultFactoryFactory.createObjectFactory(object);
    }

    /**
     * Returns an ObjectFactory based on the object's class.
     * 
     * @param cls - class for which a ObjectFactory will be returned.
     * @return ObjectFactory
     */
    @SuppressWarnings("unchecked")
    public <T> ObjectFactory<T> getObjectFactory(Class<T> cls) {
        for (LifecycleManager factoryFactory : store) {
            ObjectFactory objectFactory = factoryFactory.createObjectFactory(cls);
            if (objectFactory != null) {
                return objectFactory;
            }
        }

        return defaultFactoryFactory.createObjectFactory(cls);
    }
    
    public List<LifecycleManager<?>> getLifecycleManagers() {
        return Collections.unmodifiableList(this.store);
    }
}