/**
    * Copyright 2005-2013 The Kuali Foundation
    *
    * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
    *
   * 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.kuali.rice.krad.service.impl;
  
  import com.thoughtworks.xstream.XStream;
  import com.thoughtworks.xstream.mapper.MapperWrapper;
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  import org.apache.ojb.broker.core.proxy.ListProxyDefaultImpl;
  import org.kuali.rice.krad.service.PersistenceService;
  import org.kuali.rice.krad.util.DateTimeConverter;
  
  import java.util.ArrayList;
  
  /**
   * This class is the service implementation for the XmlObjectSerializer structure. This is the default implementation that gets
   * delivered with Kuali. It utilizes the XStream open source libraries and framework.
   */
  public class XmlObjectSerializerIgnoreMissingFieldsServiceImpl extends XmlObjectSerializerServiceImpl {
  	private static final Log LOG = LogFactory.getLog(XmlObjectSerializerIgnoreMissingFieldsServiceImpl.class);
  
  	private PersistenceService persistenceService;
  
  	private XStream xstream;
  
  	public XmlObjectSerializerIgnoreMissingFieldsServiceImpl() {
  
          xstream = new XStream(new ProxyAwareJavaReflectionProvider()) {
              @Override
              protected MapperWrapper wrapMapper(MapperWrapper next) {
                  return new MapperWrapper(next) {
                      @Override
                      public boolean shouldSerializeMember(Class definedIn,
                              String fieldName) {
                          if (definedIn == Object.class) {
                              return false;
                          }
                        return super.shouldSerializeMember(definedIn, fieldName);
                     }
                 };
             }
         };
  
  		xstream.registerConverter(new ProxyConverter(xstream.getMapper(), xstream.getReflectionProvider() ));
  		xstream.addDefaultImplementation(ArrayList.class, ListProxyDefaultImpl.class);
          xstream.registerConverter(new DateTimeConverter());
  	}
  
      /**
       * @see org.kuali.rice.krad.service.XmlObjectSerializer#fromXml(java.lang.String)
       *
       *  Fields on the XML that do not exist on the class will be ignored.
       */
      public Object fromXml(String xml) {
          if ( LOG.isDebugEnabled() ) {
              LOG.debug( "fromXml() : \n" + xml );
          }
          if ( xml != null ) {
              xml = xml.replaceAll( "--EnhancerByCGLIB--[0-9a-f]{0,8}", "" );
          }
          return xstream.fromXML(xml);
      }
  }