/*

  * Licensed to the Apache Software Foundation (ASF) under one or more

  * contributor license agreements.  See the NOTICE file distributed with

  * this work for additional information regarding copyright ownership.

  * The ASF licenses this file to You 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.apache.commons.flatfile.morph;

 import java.util.Locale;

 import org.apache.commons.flatfile.FieldOption;

 import net.sf.morph.Defaults;

 import net.sf.morph.transform.DecoratedConverter;

 import net.sf.morph.transform.transformers.BaseTransformer;

 /**

  * Convert text to FieldOption instances from class constants.

  * @version $Revision: 1301237 $ $Date: 2012-03-15 17:08:23 -0500 (Thu, 15 Mar 2012) $

  */

 @SuppressWarnings("unchecked")

 public class FieldOptionConstantConverter extends BaseTransformer implements

         DecoratedConverter {

     private DecoratedConverter textConverter;

     /**

      * {@inheritDoc}

      */

     @SuppressWarnings("rawtypes")

     @Override

     protected Class[] getDestinationClassesImpl() throws Exception {

         return new Class[] { FieldOption.class };

     }

     /**

      * {@inheritDoc}

      */

     @SuppressWarnings("rawtypes")

     @Override

     protected Class[] getSourceClassesImpl() throws Exception {

         return getTextConverter().getSourceClasses();

     }

     /**

      * {@inheritDoc}

      */

     @Override

     protected Object convertImpl(@SuppressWarnings("rawtypes") Class destinationClass, Object source,

             Locale locale) throws Exception {

         String constant = (String) getTextConverter().convert(String.class,

                 source, locale);

         if (destinationClass.isEnum()) {

             return Enum.valueOf(destinationClass, constant);

         }

         // return static field

         return destinationClass.getField(constant).get(null);

     }

     /**

      * Get the DecoratedConverter textConverter.

      * @return DecoratedConverter

      */

     public synchronized DecoratedConverter getTextConverter() {

         if (textConverter == null) {

             setTextConverter(Defaults.createTextConverter());

         }

         return textConverter;

     }

     /**

      * Set the DecoratedConverter textConverter.

      * @param textConverter DecoratedConverter

      */

     public synchronized void setTextConverter(DecoratedConverter textConverter) {

         this.textConverter = textConverter;

     }

 }