sdnr/wireless-transport/code-Carbon-SR1/apps/devicemanager/impl/src/main/java/org/opendaylight/mwtn/base/database/JsonMapperBase.java

   1 /*********************************************************************************
   2  *  Copyright © 2015, highstreet technologies GmbH
   3  *  All rights reserved!
   4  *
   5  *  http://www.highstreet-technologies.com/
   6  *
   7  *  The reproduction, transmission or use of this document or its contents is not
   8  *  permitted without express written authority. Offenders will be liable for
   9  *  damages. All rights, including rights created by patent grant or registration
  10  *  of a utility model or design, are reserved. Technical modifications possible.
  11  *  Technical specifications and features are binding only insofar as they are
  12  *  specifically and expressly agreed upon in a written contract.
  13  *
  14  *  @author: Martin Skorupski [martin@skorupski.de]
  15  *********************************************************************************/
  16 package org.opendaylight.mwtn.base.database;
  17
  18 import java.io.IOException;
  19 import java.io.StringWriter;
  20 import java.util.List;
  21
  22 import org.slf4j.Logger;
  23 import org.slf4j.LoggerFactory;
  24
  25 import com.fasterxml.jackson.annotation.JsonAutoDetect.Visibility;
  26 import com.fasterxml.jackson.annotation.PropertyAccessor;
  27 import com.fasterxml.jackson.core.JsonGenerationException;
  28 import com.fasterxml.jackson.core.JsonGenerator.Feature;
  29 import com.fasterxml.jackson.databind.DeserializationFeature;
  30 import com.fasterxml.jackson.databind.JsonMappingException;
  31 import com.fasterxml.jackson.databind.ObjectMapper;
  32 import com.fasterxml.jackson.databind.SerializationFeature;
  33
  34 /**
  35  * This class is used to define default for JSON Serialization and Deserialization for the project at a single place
  36  */
  37 public class JsonMapperBase extends ObjectMapper {
  38
  39     private static final long serialVersionUID = 1L;
  40     private static final Logger LOG = LoggerFactory.getLogger(JsonMapperBase.class);
  41
  42     public JsonMapperBase() {
  43
  44         setVisibility(PropertyAccessor.ALL, Visibility.NONE);
  45         setVisibility(PropertyAccessor.FIELD, Visibility.ANY);
  46
  47         // Deserialization
  48         configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
  49         configure(DeserializationFeature.READ_UNKNOWN_ENUM_VALUES_AS_NULL, true);
  50
  51         // Serialization
  52         configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
  53         getFactory().configure(Feature.ESCAPE_NON_ASCII, true);
  54     }
  55
  56
  57     public String objectToJson( Object object ) {
  58         String res = null;
  59
  60         try {
  61
  62             StringWriter stringEmp = new StringWriter();
  63             writeValue(stringEmp, object);
  64             res = stringEmp.toString();
  65             stringEmp.close();
  66
  67         } catch (JsonGenerationException e) {
  68             LOG.debug(e.toString());
  69         } catch (JsonMappingException e) {
  70             LOG.debug(e.toString());
  71         } catch (IOException e) {
  72             LOG.debug(e.toString());
  73         } catch (Exception e) {
  74             LOG.debug(e.toString());
  75         }
  76
  77         return res;
  78     }
  79
  80     public String objectListToJson( List<? extends Object> objectList ) {
  81         String res = null;
  82
  83         try {
  84
  85             StringWriter stringEmp = new StringWriter();
  86             writeValue(stringEmp, objectList);
  87             res = stringEmp.toString();
  88             stringEmp.close();
  89
  90         } catch (JsonGenerationException e) {
  91             LOG.debug(e.toString());
  92         } catch (JsonMappingException e) {
  93             LOG.debug(e.toString());
  94         } catch (IOException e) {
  95             LOG.debug(e.toString());
  96         } catch (Exception e) {
  97             LOG.debug(e.toString());
  98         }
  99
 100         return res;
 101     }
 102
 103 }