/**

  * 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.loader.MappingsSource;

 import org.dozer.util.MappingUtils;

 import org.slf4j.Logger;

 import org.slf4j.LoggerFactory;

 import org.w3c.dom.Document;

 import javax.xml.parsers.DocumentBuilder;

 import java.io.InputStream;

 /**

  * Internal class that reads and parses a single custom mapping XML stream into

  * raw ClassMap objects. Only intended for internal use.

  * 

  * @author suwarnaratana.arm

  */

 public class MappingStreamReader implements MappingsSource<InputStream> {

         private static final Logger log = LoggerFactory

                         .getLogger(MappingStreamReader.class);

         private final DocumentBuilder documentBuilder;

   private final MappingsSource<Document> parser;

         public MappingStreamReader(XMLParserFactory parserFactory) {

     this.documentBuilder = parserFactory.createParser();

     this.parser = new XMLParser();

         }

         public MappingFileData read(InputStream xmlStream) {

                 MappingFileData result = null;

                 try {

                         Document document = documentBuilder.parse(xmlStream);

                         result = parser.read(document);

                 } catch (Throwable e) {

                         log.error("Error while loading dozer mapping InputStream: ["

                                         + xmlStream + "]", e);

                         MappingUtils.throwMappingException(e);

                 }

                 return result;

         }

 }