/*

  * Licensed under the MIT License

  * 

  * Copyright 2011 (c) Flávio Silva, flsilva.com

  *

  * Permission is hereby granted, free of charge, to any person

  * obtaining a copy of this software and associated documentation

  * files (the "Software"), to deal in the Software without

  * restriction, including without limitation the rights to use,

  * copy, modify, merge, publish, distribute, sublicense, and/or sell

  * copies of the Software, and to permit persons to whom the

  * Software is furnished to do so, subject to the following

  * conditions:

  *

  * The above copyright notice and this permission notice shall be

  * included in all copies or substantial portions of the Software.

  *

  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

  * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

  * OTHER DEALINGS IN THE SOFTWARE.

  * 

  * http://www.opensource.org/licenses/mit-license.php

  */

 package org.vostokframework.domain.loading

 {

         import org.as3collections.IIterator;

         import org.as3collections.IList;

         import org.as3collections.IMap;

         import org.as3collections.lists.ReadOnlyArrayList;

         import org.as3collections.lists.TypedList;

         import org.as3collections.maps.HashMap;

         import org.as3collections.maps.TypedMap;

         import org.as3utils.ReflectionUtil;

         import org.vostokframework.VostokIdentification;

         import org.vostokframework.domain.loading.errors.DuplicateLoaderError;

         /**

          * description

          * 

          * @author Flávio Silva

          */

         public class LoaderRepository

         {

                 private var _loaderMap:IMap;//<String,ILoader> - where String = ILoader().identification.toString()

                 public function get openedConnections():int

                 {

                         var it:IIterator = _loaderMap.iterator();

                         var loader:ILoader;

                         var sum:int;

                         while (it.hasNext())

                         {

                                 loader = it.next();

                                 sum += loader.openedConnections;

                         }

                         return sum;

                 }

                 /**

                  * description

                  */

                 public function LoaderRepository()

                 {

                         _loaderMap = new TypedMap(new HashMap(), String, ILoader);

                 }

                 /**

                  * description

                  * 

                  * @param         loader

                  * @throws         ArgumentError         if the <code>loader</code> argument is <code>null</code>.

                  * @throws         org.vostokframework.loadermanagement.errors.DuplicateLoaderError         if already exists an <code>ILoader</code> object stored with the same <code>id</code> of the provided <code>loader</code> argument.

                  * @return

                  */

                 public function add(loader:ILoader): void

                 {

                         if (!loader) throw new ArgumentError("Argument <loader> must not be null.");

                         if (_loaderMap.containsKey(loader.identification.toString()))

                         {

                                 var message:String = "There is already an ILoader object stored with identification:\n";

                                 message += "<" + loader.identification + ">\n";

                                 message += "Use the method <LoaderRepository().exists()> to check if a ILoader object already exists.\n";

                                 message += "For further information please read the documentation section about the ILoader object.";

                                 throw new DuplicateLoaderError(loader.identification, message);

                         }

                         _loaderMap.put(loader.identification.toString(), loader);

                 }

                 /**

                  * description

                  * 

                  * @return

                   */

                 public function clear(): void

                 {

                         _loaderMap.clear();

                 }

                 /**

                  * description

                  * 

                  * @param         loaderId    

                  * @throws         ArgumentError         if the <code>loaderId</code> argument is <code>null</code> or <code>empty</code>.

                  * @return

                  */

                 public function exists(identification:VostokIdentification): Boolean

                 {

                         if (!identification) throw new ArgumentError("Argument <identification> must not be null.");

                         return _loaderMap.containsKey(identification.toString());

                 }

                 /**

                  * description

                  * 

                  * @param         loaderId    

                  * @throws         ArgumentError         if the <code>loaderId</code> argument is <code>null</code> or <code>empty</code>.

                  * @return

                  */

                 public function find(identification:VostokIdentification): ILoader

                 {

                         if (!identification) throw new ArgumentError("Argument <identification> must not be null.");

                         return _loaderMap.getValue(identification.toString());

                 }

                 /**

                  * description

                  * 

                  * @return

                   */

                 public function findAll(): IList

                 {

                         if (isEmpty()) return null;

                         var l:IList = new ReadOnlyArrayList(_loaderMap.getValues().toArray());

                         return l;

                 }

                 /**

                  * description

                  * 

                  * @return

                   */

                 /*public function findAllLoading(): IList

                 {

                         var list1:IList = new ArrayList(findByStatus(LoaderConnecting.INSTANCE).toArray());

                         var list2:IList = new ArrayList(findByStatus(LoaderLoading.INSTANCE).toArray());

                         //TODO: otimizar

                         var unique:UniqueList = new UniqueList(new ArrayList());

                         unique.addAll(list1);

                         unique.addAll(list2);

                         return new ReadOnlyArrayList(unique.toArray());

                 }*/

                 /**

                  * description

                  * 

                  * @return

                   */

                 /*public function findByStatus(status:LoaderState): IList

                 {

                         if (!status) throw new ArgumentError("Argument <status> must not be null.");

                         var it:IIterator = _loaderMap.getValues().iterator();

                         var loader:ILoader;

                         var list:IList = new ArrayList();

                         while (it.hasNext())

                         {

                                 loader = it.next();

                                 if (loader.state.equals(status))

                                 {

                                         list.add(loader);

                                 }

                         }

                         return new ReadOnlyArrayList(list.toArray());

                 }*/

                 public function findParentLoader(childIdentification:VostokIdentification):ILoader

                 {

                         var it:IIterator = _loaderMap.getValues().iterator();

                         var parentLoader:ILoader;

                         while (it.hasNext())

                         {

                                 parentLoader = it.next();

                                 if (parentLoader.containsChild(childIdentification)) return parentLoader;

                         }

                         return null;

                 }

                 /**

                  * description

                  * 

                  * @return

                  */

                 public function isEmpty(): Boolean

                 {

                         return _loaderMap.isEmpty();

                 }

                 /**

                  * description

                  * 

                  * @param         loaderId    

                  * @throws         ArgumentError         if the <code>loaderId</code> argument is <code>null</code> or <code>empty</code>.

                  * @return

                  */

                 public function remove(identification:VostokIdentification): Boolean

                 {

                         if (!identification) throw new ArgumentError("Argument <identification> must not be null.");

                         return _loaderMap.remove(identification.toString()) != null;

                 }

                 /**

                  * description

                  * 

                  * @param         loaders    

                  * @throws         ArgumentError         if the <code>loaders</code> argument is <code>null</code>.

                  * @return

                  */

                 public function removeAll(loaders:IList): Boolean

                 {

                         if (!loaders) throw new ArgumentError("Argument <loaders> must not be null.");

                         if (loaders.isEmpty()) return false;

                         var prevSize:int = size();

                         var $loaders:IList = new TypedList(loaders, ILoader);

                         var it:IIterator = $loaders.iterator();

                         var loader:ILoader;

                         while (it.hasNext())

                         {

                                 loader = it.next();

                                 remove(loader.identification);

                         }

                         return size() != prevSize;

                 }

                 /**

                  * description

                  * 

                  * @return

                  */

                 public function size(): int

                 {

                         return _loaderMap.size();

                 }

                 /**

                  * description

                  * 

                  * @return

                  */

                 public function toString(): String

                 {

                         return "[" + ReflectionUtil.getClassName(this) + "] <" + _loaderMap.getValues() + ">";

                 }

         }

 }