/*

  * Copyright 2009-2010 Steve Chaloner

  *

  * 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 be.objectify.led.factory.type;

 import be.objectify.led.FactoryResolver;

 import be.objectify.led.GenericTypes;

 import be.objectify.led.ObjectFactory;

 import be.objectify.led.TypeFactory;

 import be.objectify.led.factory.object.SetFactory;

 import be.objectify.led.util.StringUtils;

 import java.lang.reflect.Field;

 import java.util.ArrayList;

 import java.util.Collection;

 import java.util.HashSet;

 import java.util.List;

 import java.util.Set;

 import java.util.StringTokenizer;

 /**

  * @author Steve Chaloner

  * @version <!-- $Revision$ -->, <!-- $Date$ -->

  */

 public class SetTypeFactory implements TypeFactory<Set>

 {

     private final FactoryResolver factoryResolver;

     public SetTypeFactory(FactoryResolver factoryResolver)

     {

         this.factoryResolver = factoryResolver;

     }

     /**

      * {@inheritDoc}

      */

     public SetFactory createObjectFactory(Class[] classes,

                                           Field field)

     {

         return new SetFactory(classes[0],

                               field,

                               factoryResolver)

         {

             protected Collection parse(String propertyName,

                                        String propertyValue,

                                        ObjectFactory objectFactory)

             {

                 List list = new ArrayList();

                 if (!StringUtils.isEmpty(propertyValue))

                 {

                     for (StringTokenizer stringTokenizer = new StringTokenizer(propertyValue); stringTokenizer.hasMoreTokens();)

                     {

                         list.add(objectFactory.createObject(propertyName,

                                                             stringTokenizer.nextToken()));

                     }

                 }

                 return list;

             }

             protected Set createSet()

             {

                 return new HashSet();

             }

         };

     }

     /**

      * {@inheritDoc}

      */

     public Class<Set> getBoundClass()

     {

         return Set.class;

     }

     /**

      * {@inheritDoc}

      */

     public Class[] determineClassType(Class fieldType,

                                       GenericTypes genericTypes)

     {

         if (genericTypes == null || genericTypes.value().length != 1)

         {

             throw new RuntimeException("GenericTypes(value class) annotation required to determine Collection value type");

         }

         return genericTypes.value();

     }

 }