/**

  * Copyright 2005-2013 Dozer Project

  *

  * Licensed 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

  *

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  */

 package org.dozer.factory;

 import org.dozer.BeanFactory;

 import java.util.ArrayList;

 import java.util.Arrays;

 import java.util.List;

 import java.util.Map;

 import java.util.concurrent.CopyOnWriteArrayList;

 /**

  * Internal class that contains the logic used to create a new instance of the destination object being mapped. Performs

  * various checks to determine how the destination object instance is created. Only intended for internal use.

  *

  * @author tierney.matt

  * @author garsombke.franz

  * @author dmitry.buzdin

  */

 public final class DestBeanCreator {

   static final List<BeanCreationStrategy> pluggedStrategies = new ArrayList<BeanCreationStrategy>();

   // order in this collection determines resolving priority

   static final BeanCreationStrategy[] availableStrategies = new BeanCreationStrategy[]{

           ConstructionStrategies.byCreateMethod(),

           ConstructionStrategies.byGetInstance(),

           ConstructionStrategies.xmlGregorianCalendar(),

           ConstructionStrategies.byInterface(),

           ConstructionStrategies.xmlBeansBased(),

           ConstructionStrategies.byFactory(),

           ConstructionStrategies.byConstructor()

   };

   private DestBeanCreator() {

   }

   public static <T> T create(Class<T> targetClass) {

     return (T) create(targetClass, null);

   }

   public static Object create(Class<?> targetClass, Class<?> alternateClass) {

     return create(new BeanCreationDirective(null, null, targetClass, alternateClass, null, null, null));

   }

   public static Object create(BeanCreationDirective directive) {

     Object result = applyStrategies(directive, pluggedStrategies);

     if (result == null) result = applyStrategies(directive, Arrays.asList(availableStrategies));

     return result;

   }

   private static Object applyStrategies(BeanCreationDirective directive, List<BeanCreationStrategy> strategies) {

     // TODO create method lookup by annotation/convention

     // TODO Cache ConstructionStrategy (reuse caching infrastructure)

     // TODO Resolve JAXB by XmlType Annotation

     // TODO Check resulting type in each method

     // TODO Directive toString()

     // TODO review and document

     for (BeanCreationStrategy strategy : new CopyOnWriteArrayList<BeanCreationStrategy>(strategies)) {

       if (strategy.isApplicable(directive)) {

         return strategy.create(directive);

       }

     }

     return null;

   }

   public static void setStoredFactories(Map<String, BeanFactory> factories) {

     ConstructionStrategies.byFactory().setStoredFactories(factories);

   }

   public static void addPluggedStrategy(BeanCreationStrategy strategy) {

     pluggedStrategies.add(strategy);

   }

 }