/*

  * Copyright 2004-2011 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 javax.faces.internal;

 import java.util.HashMap;

 import java.util.Map;

 import javax.faces.convert.Converter;

 import javax.faces.internal.ConverterResource.ConverterPair;

 import org.seasar.framework.beans.util.BeanUtil;

 import org.seasar.framework.container.ComponentDef;

 import org.seasar.framework.container.S2Container;

 import org.seasar.framework.container.factory.SingletonS2ContainerFactory;

 /**

  * @author shot

  */

 public class NormalConverterBuilderImpl implements ConverterBuilder {

     private S2Container container;

     private Map converters = new HashMap();

     public NormalConverterBuilderImpl() {

         container = SingletonS2ContainerFactory.getContainer();

     }

     public NormalConverterBuilderImpl(S2Container container) {

         this.container = container;

     }

     public Converter build(String expression, ConverterPair[] pairs) {

         if (pairs == null || pairs.length == 0) {

             return null;

         }

         if (converters.containsKey(expression)) {

             return (Converter) converters.get(expression);

         }

         Converter converter = getSingleConverter(pairs[0]);

         converters.put(expression, converter);

         return converter;

     }

     //see https://www.seasar.org/issues/browse/TEEDA-125

     protected Converter getSingleConverter(ConverterPair pair) {

         final ComponentDef cd = container.getComponentDef(pair.converterName);

         if (!Converter.class.isAssignableFrom(cd.getComponentClass())) {

             return null;

         }

         final Converter converter = (Converter) cd.getComponent();

         BeanUtil.copyProperties(pair.properties, converter);

         return converter;

     }

     public void setContainer(S2Container container) {

         this.container = container;

     }

     public void clearAll() {

         converters.clear();

     }

     public void clearConverter(String expression) {

         converters.remove(expression);

     }

 }