package org.kuali.ole.docstore.discovery.circulation;
   
   import org.codehaus.jackson.map.ObjectMapper;
   import groovy.json.JsonBuilder;
   import org.slf4j.Logger;
   import org.slf4j.LoggerFactory;
   
   import javax.xml.bind.JAXBContext;
   import javax.xml.bind.JAXBElement;
  import javax.xml.bind.JAXBException;
  import javax.xml.bind.Unmarshaller;
  import javax.xml.stream.XMLInputFactory;
  import javax.xml.stream.XMLStreamReader;
  import java.io.IOException;
  import java.io.StringReader;
  
  /**
   * Created with IntelliJ IDEA.
   * User: pvsubrah
   * Date: 5/22/13
   * Time: 10:32 AM
   * To change this template use File | Settings | File Templates.
   */
  public class XmlContentHandler {
      private XMLInputFactory xmlInputFactory;
      private static final Logger LOG             = LoggerFactory.getLogger(XmlContentHandler.class);
      public Object unmarshalXMLContent(Class clazz, String content) {
          Object unmarshaledObject = null;
          try {
              JAXBContext jaxbContext = JAXBContextFactory.getJAXBContextForClass(clazz);
              Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();
              XMLInputFactory xmlInputFactory = getXmlInputFactory();
              XMLStreamReader xmlStreamReader = xmlInputFactory.createXMLStreamReader(new StringReader(content));
              unmarshaledObject = jaxbUnmarshaller.unmarshal(xmlStreamReader);
          } catch (Exception e) {
              LOG.error(e.getMessage(), e);
          }
          if (unmarshaledObject instanceof JAXBElement) {
              return ((JAXBElement) unmarshaledObject).getValue();
          }
          return unmarshaledObject;
      }
  
      public String marshalToJSON(Object object) throws JAXBException, IOException {
          ObjectMapper objectMapper = new ObjectMapper();
          return objectMapper.defaultPrettyPrintingWriter().writeValueAsString(object);
      }
  
      private XMLInputFactory getXmlInputFactory() {
          if (null == xmlInputFactory) {
              xmlInputFactory = XMLInputFactory.newInstance();
          }
          return xmlInputFactory;
      }
  }