/*

  * Copyright 2004-2008 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.uruma.component.factory.desc;

 import java.lang.reflect.Constructor;

 import java.util.List;

 import org.seasar.framework.beans.BeanDesc;

 import org.seasar.framework.beans.factory.BeanDescFactory;

 import org.seasar.framework.util.OgnlUtil;

 import org.seasar.framework.xml.TagHandler;

 public class TagHandlerBuilder {

     public static TagHandler buildTagHandler(final UrumaComponentDesc desc)

             throws ClassNotFoundException {

         Object[] args = getArgs(desc);

         Class<?>[] argTypes = getArgTypes(args);

         String clazz = desc.getTagHandlerClass();

         BeanDesc bd = BeanDescFactory.getBeanDesc(Class.forName(clazz));

         Constructor<?> constructor = bd.getConstructor(argTypes);

         return null;

     }

     protected static Object[] getArgs(final UrumaComponentDesc desc) {

         int size = desc.getTagHandlerArgs().size();

         List<String> argExprs = desc.getTagHandlerArgs();

         Object[] args = new Object[size];

         for (int i = 0; i < size; i++) {

             Object exp = OgnlUtil.parseExpression(argExprs.get(i));

             args[i] = OgnlUtil.getValue(exp, null);

         }

         return args;

     }

     protected static Class<?>[] getArgTypes(final Object[] args) {

         Class<?>[] types = new Class<?>[args.length];

         for (int i = 0; i < args.length; i++) {

             Object object = args[i];

             types[i] = object.getClass();

         }

         return types;

     }

 }