gerrit.onap Code Review - sdc.git/blob

   1 package org.openecomp.sdc.securityutil;
   2
   3 import com.fasterxml.jackson.annotation.JsonInclude;
   4 import com.fasterxml.jackson.databind.DeserializationFeature;
   5 import com.fasterxml.jackson.databind.ObjectMapper;
   6 import com.fasterxml.jackson.databind.SerializationFeature;
   7 import org.slf4j.Logger;
   8 import org.slf4j.LoggerFactory;
   9
  10 import java.io.IOException;
  11
  12 public class RepresentationUtils {
  13
  14     private static final Logger log = LoggerFactory.getLogger(RepresentationUtils.class.getName());
  15
  16     /**
  17      * Build JSON Representation of given Object
  18      *
  19      * @param elementToRepresent
  20      * @return
  21      * @throws IOException
  22      */
  23     public static <T> String toRepresentation(T elementToRepresent) throws IOException {
  24
  25         ObjectMapper mapper = new ObjectMapper();
  26         mapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
  27         mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
  28         return mapper.writeValueAsString(elementToRepresent);
  29     }
  30
  31     /**
  32      * Convert JSON representation to given class
  33      *
  34      * @param json
  35      * @param clazz
  36      * @param <T>
  37      * @return
  38      */
  39     public static <T> T fromRepresentation(String json, Class<T> clazz) {
  40         ObjectMapper mapper = new ObjectMapper();
  41         T object = null;
  42         mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
  43         mapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
  44         mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
  45         try {
  46             object = mapper.readValue(json, clazz);
  47         } catch (Exception e) {
  48             log.error("Error when parsing JSON of object of type {}", clazz.getSimpleName(), e);
  49         } // return null in case of exception
  50
  51         return object;
  52     }
  53 }