/**

  * Copyright 2005-2013 Dozer Project

  *

  * 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.dozer.loader.xml;

 import org.dozer.classmap.MappingFileData;

 import org.dozer.config.BeanContainer;

 import org.dozer.loader.MappingsSource;

 import org.dozer.util.DozerClassLoader;

 import org.dozer.util.MappingUtils;

 import org.slf4j.Logger;

 import org.slf4j.LoggerFactory;

 import java.io.IOException;

 import java.io.InputStream;

 import java.net.URL;

 /**

  * Internal class that reads and parses a single custom mapping xml file into raw ClassMap objects. Only intended for

  * internal use.

  *

  * @author tierney.matt

  * @author garsombke.franz

  */

 public class MappingFileReader implements MappingsSource<URL> {

   private final Logger log = LoggerFactory.getLogger(MappingFileReader.class);

   private final MappingStreamReader streamReader;

   public MappingFileReader(XMLParserFactory parserFactory) {

     streamReader = new MappingStreamReader(parserFactory);

   }

   public MappingFileData read(String fileName) {

     DozerClassLoader classLoader = BeanContainer.getInstance().getClassLoader();

     URL url = classLoader.loadResource(fileName);

     return read(url);

   }

   public MappingFileData read(URL url) {

     MappingFileData result = null;

     InputStream stream = null;

     try {

       stream = url.openStream();

       result = streamReader.read(stream);

     } catch (IOException e) {

               log.error("Error while loading dozer mapping file url: [" + url + "]", e);

               MappingUtils.throwMappingException(e);

         } finally {

       try {

         if (stream != null) {

           stream.close();

         }

       } catch (IOException e) {

         MappingUtils.throwMappingException(e);

       }

     }

     return result;

   }

 }