/**
    * This file Copyright (c) 2011 Magnolia International
    * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
    *
    *
    * This file is dual-licensed under both the Magnolia
    * Network Agreement and the GNU General Public License.
    * You may elect to use one or the other of these licenses.
    *
   * This file is distributed in the hope that it will be
   * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
   * implied warranty of MERCHANTABILITY or FITNESS FOR A
   * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
   * Redistribution, except as permitted by whichever of the GPL
   * or MNA you select, is prohibited.
   *
   * 1. For the GPL license (GPL), you can redistribute and/or
   * modify this file under the terms of the GNU General
   * Public License, Version 3, as published by the Free Software
   * Foundation.  You should have received a copy of the GNU
   * General Public License, Version 3 along with this program;
   * if not, write to the Free Software Foundation, Inc., 51
   * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * 2. For the Magnolia Network Agreement (MNA), this file
   * and the accompanying materials are made available under the
   * terms of the MNA which accompanies this distribution, and
   * is available at http://www.magnolia-cms.com/mna.html
   *
   * Any modifications to this file must keep this entire header
   * intact.
   *
   */
  package info.magnolia.objectfactory.configuration;
  
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  
  /**
   * Configuration used to create component providers.
   *
   * @version $Id$
   */
  public class ComponentProviderConfiguration implements Cloneable {
  
      private Map<Class<?>, Class<?>> typeMapping = new HashMap<Class<?>, Class<?>>();
      private Map<Class, ComponentConfiguration> components = new HashMap<Class, ComponentConfiguration>();
      private List<ComponentConfigurer> configurers = new ArrayList<ComponentConfigurer>();
  
      public void addComponent(ComponentConfiguration componentConfiguration) {
          this.components.put(componentConfiguration.getType(), componentConfiguration);
      }
  
      public void addTypeMapping(Class<?> from, Class<?> to) {
          this.typeMapping.put(from, to);
      }
  
      public Map<Class<?>, Class<?>> getTypeMapping() {
          return typeMapping;
      }
  
      public Map<Class, ComponentConfiguration> getComponents() {
          return components;
      }
  
      public List<ComponentConfigurer> getConfigurers() {
          return configurers;
      }
  
      public boolean addConfigurer(ComponentConfigurer configurer) {
          return configurers.add(configurer);
      }
  
      public <T> void registerImplementation(Class<T> type, Class<? extends T> implementation) {
          addComponent(ImplementationConfiguration.valueOf(type, implementation));
      }
  
      public <T> void registerImplementation(Class<T> type) {
          registerImplementation(type, type);
      }
  
      public <T> void registerInstance(Class<T> type, Object instance) {
          addComponent(InstanceConfiguration.valueOf(type, instance));
      }
  
      public void combine(ComponentProviderConfiguration components) {
          this.typeMapping.putAll(components.typeMapping);
          this.components.putAll(components.clone().components);
          this.configurers.addAll(components.configurers);
      }
  
      @Override
      public ComponentProviderConfiguration clone() {
          try {
              ComponentProviderConfiguration clone = (ComponentProviderConfiguration) super.clone();
              clone.components = new HashMap<Class, ComponentConfiguration>();
             for (Map.Entry<Class, ComponentConfiguration> entry : components.entrySet()) {
                 clone.components.put(entry.getKey(), entry.getValue().clone());
             }
             clone.typeMapping = new HashMap<Class<?>, Class<?>>(typeMapping);
             clone.configurers = new ArrayList<ComponentConfigurer>(configurers);
             return clone;
         } catch (CloneNotSupportedException e) {
             // should never happen
             throw new RuntimeException(e);
         }
     }
 }