Java EntityProvider.readLink方法代码示例

import org.apache.olingo.odata2.api.ep.EntityProvider; //导入方法依赖的package包/类
public final UriInfo parseLink(final EdmEntitySet entitySet, final InputStream content, final String contentType)
    throws ODataJPARuntimeException {

  String uriString = null;
  UriInfo uri = null;
  try {
    uriString = EntityProvider.readLink(contentType, entitySet, content);
    ODataContext odataContext = context.getODataContext();
    final String svcRoot = odataContext.getPathInfo().getServiceRoot().toString();
    final String path =
        uriString.startsWith(svcRoot.toString()) ? uriString.substring(svcRoot.length()) : uriString;
    final List<PathSegment> pathSegment = getPathSegment(path);
    edm = getEdm();
    uri = UriParser.parse(edm, pathSegment, Collections.<String, String> emptyMap());
  } catch (ODataException e) {
    throw ODataJPARuntimeException.throwException(ODataJPARuntimeException.GENERAL.addContent(e.getMessage()), e);
  }
  return uri;
}
 

import org.apache.olingo.odata2.api.ep.EntityProvider; //导入方法依赖的package包/类
private Map<String, Object> parseLink(final EdmEntitySet entitySet, final InputStream content,
    final String contentType) throws ODataException {
  ODataContext context = getContext();
  final int timingHandle = context.startRuntimeMeasurement("EntityProvider", "readLink");

  final String uriString = EntityProvider.readLink(contentType, entitySet, content);

  context.stopRuntimeMeasurement(timingHandle);

  final Map<String, Object> targetKeys = parseLinkUri(entitySet, uriString);
  if (targetKeys == null) {
    throw new ODataBadRequestException(ODataBadRequestException.BODY);
  }
  return targetKeys;
}
 

import org.apache.olingo.odata2.api.ep.EntityProvider; //导入方法依赖的package包/类
@Override
public ODataResponse createEntityLink(PostUriInfo uri_info, InputStream content,
      String request_content_type, String content_type) throws ODataException
{
   // Target of the link to create
   //EdmEntitySet link_target_es = uri_info.getTargetEntitySet();

   // Gets the entityset containing the navigation link to `link_target_es`
   EdmEntitySet  target_es = getLinkFromES(new AdaptableUriInfo(uri_info));
   EdmEntityType target_et = target_es.getEntityType();

   // Check abilities and permissions
   if (!target_es.getName().equals(Model.USER.getName()))
   {
      throw new ODataException("EntitySet " + target_et.getName() + " cannot create links");
   }

   fr.gael.dhus.database.object.User current_user = Security.getCurrentUser();

   AbstractEntitySet<?> es = Model.getEntitySet(target_es.getName());
   if (!es.isAuthorized(current_user))
   {
      throw new NotAllowedException();
   }

   // Gets the affected entity
   String key = uri_info.getKeyPredicates().get(0).getLiteral();
   User user = new User(key);

   // Reads and parses the link
   String link = EntityProvider.readLink(content_type, target_es, content);
   link = link.trim(); // Olingo does not trim... resulting in a parse exception
   try
   {
      link = (new URI(link)).getPath();
      if (link == null || link.isEmpty())
      {
         throw new ExpectedException("Invalid link, path is empty");
      }
      // Gets the OData resource path
      Matcher matcher = RESOURCE_PATH_EXTRACTOR.matcher(link);
      if (matcher.find())
      {
         link = matcher.group(1);
      }
      else
      {
         throw new ExpectedException("Invalid link, path is malformed");
      }
   }
   catch (URISyntaxException e)
   {
      throw new ExpectedException(e.getMessage());
   }

   // Use Olingo's UriParser
   UriParser urip = RuntimeDelegate.getUriParser(getContext().getService().getEntityDataModel());
   List<PathSegment> path_segments = new ArrayList<>();
   StringTokenizer st = new StringTokenizer(link, "/");
   while (st.hasMoreTokens())
   {
      path_segments.add(UriParser.createPathSegment(st.nextToken(), null));
   }
   @SuppressWarnings("unchecked")
   UriInfo uilink = urip.parse(path_segments, Collections.EMPTY_MAP);

   // Creates link
   user.createLink(uilink);

   // Empty answer with HTTP code 204: no content
   return ODataResponse.newBuilder().build();
}
 

import org.apache.olingo.odata2.api.ep.EntityProvider; //导入方法依赖的package包/类
@Override
public ODataResponse createEntityLink(PostUriInfo uri_info, InputStream content,
      String request_content_type, String content_type) throws ODataException
{
   // Target of the link to create
   //EdmEntitySet link_target_es = uri_info.getTargetEntitySet();

   // Gets the entityset containing the navigation link to `link_target_es`
   EdmEntitySet  target_es = getLinkFromES(new AdaptableUriInfo(uri_info));
   EdmEntityType target_et = target_es.getEntityType();

   // Check abilities and permissions
   if (!target_es.getName().equals(Model.USER.getName()))
   {
      throw new ODataException("EntitySet " + target_et.getName() + " cannot create links");
   }

   fr.gael.dhus.database.object.User current_user = Security.getCurrentUser();

   AbstractEntitySet es = Model.getEntitySet(target_es.getName());
   if (!es.isAuthorized(current_user))
   {
      throw new NotAllowedException();
   }

   // Gets the affected entity
   String key = uri_info.getKeyPredicates().get(0).getLiteral();
   User user = new User(key);

   // Reads and parses the link
   String link = EntityProvider.readLink(content_type, target_es, content);
   link = link.trim(); // Olingo does not trim... resulting in a parse exception
   try
   {
      link = (new URI(link)).getPath();
      if (link == null || link.isEmpty())
      {
         throw new ExpectedException("Invalid link, path is empty");
      }
      // Gets the OData resource path
      Matcher matcher = RESOURCE_PATH_EXTRACTOR.matcher(link);
      if (matcher.find())
      {
         link = matcher.group(1);
      }
      else
      {
         throw new ExpectedException("Invalid link, path is malformed");
      }
   }
   catch (URISyntaxException e)
   {
      throw new ExpectedException(e.getMessage());
   }

   // Use Olingo's UriParser
   UriParser urip = RuntimeDelegate.getUriParser(getContext().getService().getEntityDataModel());
   List<PathSegment> path_segments = new ArrayList<>();
   StringTokenizer st = new StringTokenizer(link, "/");
   while (st.hasMoreTokens())
   {
      path_segments.add(UriParser.createPathSegment(st.nextToken(), null));
   }
   @SuppressWarnings("unchecked")
   UriInfo uilink = urip.parse(path_segments, Collections.EMPTY_MAP);

   // Creates link
   user.createLink(uilink);

   // Empty answer with HTTP code 204: no content
   return ODataResponse.newBuilder().build();
}