cdmlib-remote/src/main/java/eu/etaxonomy/cdm/remote/view/RdfView.java

   1 // $Id$
   2 package eu.etaxonomy.cdm.remote.view;
   3
   4 import java.util.HashMap;
   5 import java.util.Map;
   6
   7 import javax.servlet.http.HttpServletRequest;
   8 import javax.servlet.http.HttpServletResponse;
   9 import javax.xml.transform.stream.StreamResult;
  10
  11 import net.sf.dozer.util.mapping.MapperIF;
  12
  13 import org.springframework.beans.factory.annotation.Autowired;
  14 import org.springframework.oxm.Marshaller;
  15 import org.springframework.web.servlet.view.AbstractView;
  16
  17 import com.ibm.lsid.MetadataResponse;
  18 import com.ibm.lsid.http.HTTPConstants;
  19
  20 import eu.etaxonomy.cdm.model.common.CdmBase;
  21 import eu.etaxonomy.cdm.model.taxon.Taxon;
  22 import eu.etaxonomy.cdm.remote.dto.tdwg.BaseThing;
  23 import eu.etaxonomy.cdm.remote.dto.tdwg.voc.TaxonConcept;
  24 import eu.etaxonomy.remote.dto.rdf.Rdf;
  25
  26 /**
  27  * View class which takes a MetadataResponse and returns the Source for serialization
  28  * @author ben
  29  * @see javax.xml.transform.Source
  30  * @see com.ibm.lsid.MetadataResponse
  31  */
  32 public class RdfView extends AbstractView {
  33
  34         private Marshaller marshaller;
  35
  36         private MapperIF mapper;
  37
  38         private Map<Class<? extends CdmBase>,Class<? extends BaseThing>> classMap = new HashMap<Class<? extends CdmBase>,Class<? extends BaseThing>>();
  39
  40         public RdfView() {
  41                 classMap.put(Taxon.class, TaxonConcept.class);
  42         }
  43
  44         @Autowired
  45         public void setMarshaller(Marshaller marshaller) {
  46                 this.marshaller = marshaller;
  47         }
  48
  49         @Autowired
  50         public void setMapper(MapperIF mapper) {
  51                 this.mapper = mapper;
  52         }
  53
  54         @Override
  55         protected void renderMergedOutputModel(Map model,HttpServletRequest request, HttpServletResponse response)
  56                         throws Exception {
  57                 MetadataResponse metadataResponse = (MetadataResponse)model.get("metadataResponse");
  58                 if(metadataResponse.getExpires() != null) {
  59                     response.setHeader(HTTPConstants.EXPIRES_HEADER, HTTPConstants.HTTP_DATE_FORMAT.format(metadataResponse.getExpires()));
  60                 }
  61
  62                 CdmBase object = (CdmBase)metadataResponse.getValue();
  63                 Class clazz = classMap.get(object.getClass());
  64                 Rdf rdf = new Rdf();
  65                 rdf.addThing((BaseThing)mapper.map(object, clazz));
  66                 marshaller.marshal(rdf, new StreamResult(response.getOutputStream()));
  67         }
  68
  69 }