@Override
  public boolean isEmpty(SerializerProvider prov, Map<?, ?> value) {
    if (value.isEmpty()) {
      return true;
    }

    // 05-Nove-2015, tatu: Simple cases are cheap, but for recursive
    //   emptiness checking we actually need to see if values are empty as well.
    Object supp = _suppressableValue;
    if ((supp == null) && !_suppressNulls) {
      return false;
    }
    JsonSerializer<Object> valueSer = _valueSerializer;
    final boolean checkEmpty = (MARKER_FOR_EMPTY == supp);
    if (valueSer != null) {
      for (Object elemValue : value.values()) {
        if (elemValue == null) {
          if (_suppressNulls) {
            continue;
          }
          return false;
        }
        if (checkEmpty) {
          if (!valueSer.isEmpty(prov, elemValue)) {
            return false;
          }
        } else if ((supp == null) || !supp.equals(value)) {
          return false;
        }
      }
      return true;
    }
    // But if not statically known, try this:
    for (Object elemValue : value.values()) {
      if (elemValue == null) {
        if (_suppressNulls) {
          continue;
        }
        return false;
      }
      try {
        valueSer = _findSerializer(prov, elemValue);
      } catch (JsonMappingException e) { // Ugh... can not just throw as-is, so...
        // 05-Nov-2015, tatu: For now, probably best not to assume empty then
        return false;
      }
      if (checkEmpty) {
        if (!valueSer.isEmpty(prov, elemValue)) {
          return false;
        }
      } else if ((supp == null) || !supp.equals(value)) {
        return false;
      }
    }
    return true;
  }
Esempio n. 2
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 @Override
 public void serialize(Map<?, ?> value, JsonGenerator jgen, SerializerProvider provider)
     throws IOException, JsonGenerationException {
   jgen.writeStartObject();
   if (!value.isEmpty()) {
     if (provider.isEnabled(SerializationFeature.ORDER_MAP_ENTRIES_BY_KEYS)) {
       value = _orderEntries(value);
     }
     if (_valueSerializer != null) {
       serializeFieldsUsing(value, jgen, provider, _valueSerializer);
     } else {
       serializeFields(value, jgen, provider);
     }
   }
   jgen.writeEndObject();
 }
Esempio n. 3
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 @Override
 public void serializeWithType(
     Map<?, ?> value, JsonGenerator jgen, SerializerProvider provider, TypeSerializer typeSer)
     throws IOException, JsonGenerationException {
   typeSer.writeTypePrefixForObject(value, jgen);
   if (!value.isEmpty()) {
     if (provider.isEnabled(SerializationFeature.ORDER_MAP_ENTRIES_BY_KEYS)) {
       value = _orderEntries(value);
     }
     if (_valueSerializer != null) {
       serializeFieldsUsing(value, jgen, provider, _valueSerializer);
     } else {
       serializeFields(value, jgen, provider);
     }
   }
   typeSer.writeTypeSuffixForObject(value, jgen);
 }
 @Override
 public void serialize(Map<?, ?> value, JsonGenerator gen, SerializerProvider provider)
     throws IOException {
   gen.writeStartObject(value);
   if (!value.isEmpty()) {
     if (_sortKeys || provider.isEnabled(SerializationFeature.ORDER_MAP_ENTRIES_BY_KEYS)) {
       value = _orderEntries(value, gen, provider);
     }
     PropertyFilter pf;
     if ((_filterId != null) && (pf = findPropertyFilter(provider, _filterId, value)) != null) {
       serializeFilteredFields(value, gen, provider, pf, _suppressableValue);
     } else if ((_suppressableValue != null) || _suppressNulls) {
       serializeOptionalFields(value, gen, provider, _suppressableValue);
     } else if (_valueSerializer != null) {
       serializeFieldsUsing(value, gen, provider, _valueSerializer);
     } else {
       serializeFields(value, gen, provider);
     }
   }
   gen.writeEndObject();
 }
 @Override
 public void serializeWithType(
     Map<?, ?> value, JsonGenerator gen, SerializerProvider provider, TypeSerializer typeSer)
     throws IOException {
   typeSer.writeTypePrefixForObject(value, gen);
   // [databind#631]: Assign current value, to be accessible by custom serializers
   gen.setCurrentValue(value);
   if (!value.isEmpty()) {
     if (_sortKeys || provider.isEnabled(SerializationFeature.ORDER_MAP_ENTRIES_BY_KEYS)) {
       value = _orderEntries(value, gen, provider);
     }
     PropertyFilter pf;
     if ((_filterId != null) && (pf = findPropertyFilter(provider, _filterId, value)) != null) {
       serializeFilteredFields(value, gen, provider, pf, _suppressableValue);
     } else if ((_suppressableValue != null) || _suppressNulls) {
       serializeOptionalFields(value, gen, provider, _suppressableValue);
     } else if (_valueSerializer != null) {
       serializeFieldsUsing(value, gen, provider, _valueSerializer);
     } else {
       serializeFields(value, gen, provider);
     }
   }
   typeSer.writeTypeSuffixForObject(value, gen);
 }
Esempio n. 6
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 @Override
 public boolean isEmpty(Map<?, ?> value) {
   return (value == null) || value.isEmpty();
 }