/*

  * Copyright 2004-2010 the Seasar Foundation and the Others.

  *

  * 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.seasar.cubby.plugins.spring.spi;

 import java.util.Collection;

 import java.util.Collections;

 import java.util.LinkedHashSet;

 import java.util.Set;

 import org.seasar.cubby.converter.Converter;

 import org.seasar.cubby.spi.impl.AbstractCachedConverterProvider;

 import org.springframework.beans.factory.BeanFactoryUtils;

 import org.springframework.context.ApplicationContext;

 import org.springframework.context.ApplicationContextAware;

 /**

  * コンバータプロバイダの実装クラスです。

  * 

  * @author suzuki-kei

  * @author someda

  */

 public class SpringConverterProvider extends AbstractCachedConverterProvider

                 implements ApplicationContextAware {

         private ApplicationContext applicationContext;

         private boolean initialized = false;

         private final Class<Converter> converterClass = Converter.class;

         private final Set<Converter> converters = new LinkedHashSet<Converter>();

         /**

          * アプリケーションコンテキストを設定します。

          * 

          * @param applicationContext

          *            アプリケーションコンテキスト

          */

         public void setApplicationContext(

                         final ApplicationContext applicationContext) {

                 this.applicationContext = applicationContext;

         }

         /**

          * このオブジェクトを初期化します。

          */

         public void initialize() {

                 if (initialized) {

                         return;

                 }

                 String[] names = BeanFactoryUtils.beanNamesForTypeIncludingAncestors(

                                 applicationContext, converterClass);

                 for (String name : names) {

                         Converter converter = converterClass.cast(applicationContext

                                         .getBean(name, converterClass));

                         converters.add(converter);

                 }

                 initialized = true;

         }

         @Override

         protected Collection<Converter> getConverters() {

                 return Collections.unmodifiableCollection(this.converters);

         }

 }