@GET
  @Path("/getmultiple/{types}")
  public XMLEntityMappings getMutlipleType(@PathParam("types") String types) throws Exception {

    XMLEntityMappings entityMaps = MetaSourceBuilder.createEmptyEntityMappings();
    Set<String> processed = new HashSet<>();
    String[] names = types.split(",");
    for (String typename : names) {
      if (processed.contains(typename)) {
        continue;
      }
      ClassAccessor accessor =
          JpaMapHelper.findClassAccessor(DynamicMetaSource.getEntityMaps(), typename);
      if (accessor == null) {
        continue;
      }
      JpaMapHelper.addClassAccessor(entityMaps, accessor);
      TableGeneratorMetadata meta =
          JpaMapHelper.retrieveTableGenerator(DynamicMetaSource.getEntityMaps(), accessor);
      if (meta != null) {
        entityMaps.getTableGenerators().add(meta);
      }
    }
    return entityMaps;
  }
  @GET
  @Path("/getsingle/{typename}")
  public XMLEntityMappings getSingleType(@PathParam("typename") String typename) throws Exception {

    XMLEntityMappings entityMaps = MetaSourceBuilder.createEmptyEntityMappings();
    ClassAccessor accessor =
        JpaMapHelper.findClassAccessor(DynamicMetaSource.getEntityMaps(), typename);
    if (accessor == null) {
      throw new HttpCodeException(
          Status.NO_CONTENT.getStatusCode(), "type " + typename + " is not found");
    }

    JpaMapHelper.addClassAccessor(entityMaps, accessor);
    TableGeneratorMetadata meta =
        JpaMapHelper.retrieveTableGenerator(DynamicMetaSource.getEntityMaps(), accessor);
    if (meta != null) {
      entityMaps.getTableGenerators().add(meta);
    }

    return entityMaps;
  }