com.fasterxml.jackson.core.JsonGenerator#writeNull ( )源码实例Demo

下面列出了com.fasterxml.jackson.core.JsonGenerator#writeNull ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： aws-athena-query-federation 文件： SplitSerDe.java

@Override
protected void doSerialize(Split split, JsonGenerator jgen, SerializerProvider provider)
        throws IOException
{
    jgen.writeFieldName(SPILL_LOCATION_FIELD);
    spillLocationSerializer.serialize(split.getSpillLocation(), jgen, provider);

    jgen.writeFieldName(ENCRYPTION_KEY_FIELD);
    if (split.getEncryptionKey() != null) {
        encryptionKeySerializer.serialize(split.getEncryptionKey(), jgen, provider);
    }
    else {
        jgen.writeNull();
    }

    jgen.writeObjectFieldStart(PROPERTIES_FIELD);
    for (Map.Entry<String, String> entry : split.getProperties().entrySet()) {
        jgen.writeFieldName(entry.getKey());
        jgen.writeString(entry.getValue());
    }
    jgen.writeEndObject();
}

源代码2 项目： lams 文件： StringArraySerializer.java

@Override
public void serializeContents(String[] value, JsonGenerator gen, SerializerProvider provider)
    throws IOException
{
    final int len = value.length;
    if (len == 0) {
        return;
    }
    if (_elementSerializer != null) {
        serializeContentsSlow(value, gen, provider, _elementSerializer);
        return;
    }
    for (int i = 0; i < len; ++i) {
        String str = value[i];
        if (str == null) {
            gen.writeNull();
        } else {
            gen.writeString(value[i]);
        }
    }
}

源代码3 项目： kripton 文件： FloatBeanTable.java

/**
 * for attribute value2 serialization
 */
public static byte[] serializeValue2(Float[] value) {
  if (value==null) {
    return null;
  }
  KriptonJsonContext context=KriptonBinder.jsonBind();
  try (KriptonByteArrayOutputStream stream=new KriptonByteArrayOutputStream(); JacksonWrapperSerializer wrapper=context.createSerializer(stream)) {
    JsonGenerator jacksonSerializer=wrapper.jacksonGenerator;
    jacksonSerializer.writeStartObject();
    int fieldCount=0;
    if (value!=null)  {
      fieldCount++;
      int n=value.length;
      Float item;
      // write wrapper tag
      jacksonSerializer.writeFieldName("element");
      jacksonSerializer.writeStartArray();
      for (int i=0; i<n; i++) {
        item=value[i];
        if (item==null) {
          jacksonSerializer.writeNull();
        } else {
          jacksonSerializer.writeNumber(item);
        }
      }
      jacksonSerializer.writeEndArray();
    }
    jacksonSerializer.writeEndObject();
    jacksonSerializer.flush();
    return stream.toByteArray();
  } catch(Exception e) {
    e.printStackTrace();
    throw(new KriptonRuntimeException(e.getMessage()));
  }
}

源代码4 项目： kripton 文件： CharDaoImpl.java

/**
 * for param serializer2 serialization
 */
private byte[] serializer2(List<Short> value) {
  if (value==null) {
    return null;
  }
  KriptonJsonContext context=KriptonBinder.jsonBind();
  try (KriptonByteArrayOutputStream stream=new KriptonByteArrayOutputStream(); JacksonWrapperSerializer wrapper=context.createSerializer(stream)) {
    JsonGenerator jacksonSerializer=wrapper.jacksonGenerator;
    int fieldCount=0;
    jacksonSerializer.writeStartObject();
    if (value!=null)  {
      int n=value.size();
      Short item;
      // write wrapper tag
      jacksonSerializer.writeFieldName("element");
      jacksonSerializer.writeStartArray();
      for (int i=0; i<n; i++) {
        item=value.get(i);
        if (item==null) {
          jacksonSerializer.writeNull();
        } else {
          jacksonSerializer.writeNumber(item);
        }
      }
      jacksonSerializer.writeEndArray();
    }
    jacksonSerializer.writeEndObject();
    jacksonSerializer.flush();
    return stream.toByteArray();
  } catch(Exception e) {
    e.printStackTrace();
    throw(new KriptonRuntimeException(e.getMessage()));
  }
}

源代码5 项目： kripton 文件： Bean64ATable.java

/**
 * for attribute valueSetString serialization
 */
public static byte[] serializeValueSetString(Set<String> value) {
  if (value==null) {
    return null;
  }
  KriptonJsonContext context=KriptonBinder.jsonBind();
  try (KriptonByteArrayOutputStream stream=new KriptonByteArrayOutputStream(); JacksonWrapperSerializer wrapper=context.createSerializer(stream)) {
    JsonGenerator jacksonSerializer=wrapper.jacksonGenerator;
    jacksonSerializer.writeStartObject();
    int fieldCount=0;
    if (value!=null)  {
      fieldCount++;
      // write wrapper tag
      jacksonSerializer.writeFieldName("element");
      jacksonSerializer.writeStartArray();
      for (String item: value) {
        if (item==null) {
          jacksonSerializer.writeNull();
        } else {
          jacksonSerializer.writeString(item);
        }
      }
      jacksonSerializer.writeEndArray();
    }
    jacksonSerializer.writeEndObject();
    jacksonSerializer.flush();
    return stream.toByteArray();
  } catch(Exception e) {
    e.printStackTrace();
    throw(new KriptonRuntimeException(e.getMessage()));
  }
}

源代码6 项目： FROST-Server 文件： TimeValueSerializer.java

@Override
public void serialize(TimeValue value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
    if (value.isEmpty()) {
        gen.writeNull();
    } else {
        gen.writeString(value.asISO8601());
    }
}

源代码7 项目： presto 文件： JsonUtil.java

@Override
public void writeJsonValue(JsonGenerator jsonGenerator, Block block, int position, ConnectorSession session)
        throws IOException
{
    if (block.isNull(position)) {
        jsonGenerator.writeNull();
    }
    else {
        float value = intBitsToFloat(toIntExact(REAL.getLong(block, position)));
        jsonGenerator.writeNumber(value);
    }
}

源代码8 项目： presto 文件： JsonUtil.java

@Override
public void writeJsonValue(JsonGenerator jsonGenerator, Block block, int position, ConnectorSession session)
        throws IOException
{
    if (block.isNull(position)) {
        jsonGenerator.writeNull();
    }
    else {
        double value = DOUBLE.getDouble(block, position);
        jsonGenerator.writeNumber(value);
    }
}

源代码9 项目： kripton 文件： BindAppPreferences.java

/**
 * for attribute stringList serialization
 */
protected String serializeStringList(List<String> value) {
  if (value==null) {
    return null;
  }
  KriptonJsonContext context=KriptonBinder.jsonBind();
  try (KriptonByteArrayOutputStream stream=new KriptonByteArrayOutputStream(); JacksonWrapperSerializer wrapper=context.createSerializer(stream)) {
    JsonGenerator jacksonSerializer=wrapper.jacksonGenerator;
    jacksonSerializer.writeStartObject();
    int fieldCount=0;
    if (value!=null)  {
      fieldCount++;
      int n=value.size();
      String item;
      // write wrapper tag
      jacksonSerializer.writeFieldName("stringList");
      jacksonSerializer.writeStartArray();
      for (int i=0; i<n; i++) {
        item=value.get(i);
        if (item==null) {
          jacksonSerializer.writeNull();
        } else {
          jacksonSerializer.writeString(item);
        }
      }
      jacksonSerializer.writeEndArray();
    }
    jacksonSerializer.writeEndObject();
    jacksonSerializer.flush();
    return stream.toString();
  } catch(Exception e) {
    e.printStackTrace();
    throw(new KriptonRuntimeException(e.getMessage()));
  }
}

源代码10 项目： Rosetta 文件： ContextualStoredAsJsonSerializer.java

protected void serializeAsString(T value, JsonGenerator gen, SerializerProvider provider) throws IOException {
  String res = serializeToString(value, getMapper(gen), provider);
  if ("null".equals(res)) {
    gen.writeNull();
  } else {
    gen.writeString(res);
  }
}

源代码11 项目： kripton 文件： Bean64Table.java

/**
 * for attribute valueLongList serialization
 */
public static byte[] serializeValueLongList(LinkedList<Long> value) {
  if (value==null) {
    return null;
  }
  KriptonJsonContext context=KriptonBinder.jsonBind();
  try (KriptonByteArrayOutputStream stream=new KriptonByteArrayOutputStream(); JacksonWrapperSerializer wrapper=context.createSerializer(stream)) {
    JsonGenerator jacksonSerializer=wrapper.jacksonGenerator;
    jacksonSerializer.writeStartObject();
    int fieldCount=0;
    if (value!=null)  {
      fieldCount++;
      int n=value.size();
      Long item;
      // write wrapper tag
      jacksonSerializer.writeFieldName("element");
      jacksonSerializer.writeStartArray();
      for (int i=0; i<n; i++) {
        item=value.get(i);
        if (item==null) {
          jacksonSerializer.writeNull();
        } else {
          jacksonSerializer.writeNumber(item);
        }
      }
      jacksonSerializer.writeEndArray();
    }
    jacksonSerializer.writeEndObject();
    jacksonSerializer.flush();
    return stream.toByteArray();
  } catch(Exception e) {
    e.printStackTrace();
    throw(new KriptonRuntimeException(e.getMessage()));
  }
}

源代码12 项目： katharsis-framework 文件： NullableSerializer.java

@Override
public void serialize(Nullable<Object> value, JsonGenerator gen, SerializerProvider serializers) throws IOException, JsonProcessingException {
	if (value.isPresent()) {
		Object object = value.get();
		if (object == null) {
			gen.writeNull();
		} else {
			gen.writeObject(object);
		}
	}
}

源代码13 项目： kripton 文件： Bean64Table.java

/**
 * for attribute valueSetString serialization
 */
public static byte[] serializeValueSetString(Set<String> value) {
  if (value==null) {
    return null;
  }
  KriptonJsonContext context=KriptonBinder.jsonBind();
  try (KriptonByteArrayOutputStream stream=new KriptonByteArrayOutputStream(); JacksonWrapperSerializer wrapper=context.createSerializer(stream)) {
    JsonGenerator jacksonSerializer=wrapper.jacksonGenerator;
    jacksonSerializer.writeStartObject();
    int fieldCount=0;
    if (value!=null)  {
      fieldCount++;
      // write wrapper tag
      jacksonSerializer.writeFieldName("element");
      jacksonSerializer.writeStartArray();
      for (String item: value) {
        if (item==null) {
          jacksonSerializer.writeNull();
        } else {
          jacksonSerializer.writeString(item);
        }
      }
      jacksonSerializer.writeEndArray();
    }
    jacksonSerializer.writeEndObject();
    jacksonSerializer.flush();
    return stream.toByteArray();
  } catch(Exception e) {
    e.printStackTrace();
    throw(new KriptonRuntimeException(e.getMessage()));
  }
}

源代码14 项目： olingo-odata4 文件： JsonSerializer.java

protected void primitiveValue(final JsonGenerator jgen, final EdmTypeInfo typeInfo, final Object value)
    throws IOException, EdmPrimitiveTypeException {

  final EdmPrimitiveTypeKind kind = typeInfo == null ?
      EdmTypeInfo.determineTypeKind(value) :
      typeInfo.getPrimitiveTypeKind();

  if (value == null) {
    jgen.writeNull();
  } else if (kind == EdmPrimitiveTypeKind.Boolean) {
    jgen.writeBoolean((Boolean) value);
  } else if (kind == null) {
    if (serverMode) {
      throw new EdmPrimitiveTypeException("The primitive type could not be determined.");
    } else {
      jgen.writeString(value.toString()); // This might not be valid OData.
    }
  } else {
    // TODO: add facets
    final String serialized = EdmPrimitiveTypeFactory.getInstance(kind)
        .valueToString(value, null, null, Constants.DEFAULT_PRECISION, Constants.DEFAULT_SCALE, null);

    if (isIEEE754Compatible && (kind == EdmPrimitiveTypeKind.Int64 || kind == EdmPrimitiveTypeKind.Decimal)
        || !NUMBER_TYPES.contains(kind)) {
      jgen.writeString(serialized);
    } else {
      jgen.writeNumber(serialized);
    }
  }
}

源代码15 项目： kripton 文件： LoggerSettingsBindMap.java

@Override
public int serializeOnJackson(LoggerSettings object, JsonGenerator jacksonSerializer) throws
    Exception {
  jacksonSerializer.writeStartObject();
  int fieldCount=0;

  // Serialized Field:

  // field appenders (mapped with "appenders")
  if (object.appenders!=null)  {
    fieldCount++;
    int n=object.appenders.size();
    LoggerAppenderSettings item;
    // write wrapper tag
    jacksonSerializer.writeFieldName("appenders");
    jacksonSerializer.writeStartArray();
    for (int i=0; i<n; i++) {
      item=object.appenders.get(i);
      if (item==null) {
        jacksonSerializer.writeNull();
      } else {
        loggerAppenderSettingsBindMap.serializeOnJackson(item, jacksonSerializer);
      }
    }
    jacksonSerializer.writeEndArray();
  }

  // field level (mapped with "level")
  if (object.level!=null)  {
    fieldCount++;
    jacksonSerializer.writeStringField("level", object.level.toString());
  }

  jacksonSerializer.writeEndObject();
  return fieldCount;
}

源代码16 项目： kripton 文件： BeanBeanTable.java

/**
 * for attribute value2 serialization
 */
public static byte[] serializeValue2(BeanInner[] value) {
  if (value==null) {
    return null;
  }
  KriptonJsonContext context=KriptonBinder.jsonBind();
  try (KriptonByteArrayOutputStream stream=new KriptonByteArrayOutputStream(); JacksonWrapperSerializer wrapper=context.createSerializer(stream)) {
    JsonGenerator jacksonSerializer=wrapper.jacksonGenerator;
    jacksonSerializer.writeStartObject();
    int fieldCount=0;
    if (value!=null)  {
      fieldCount++;
      int n=value.length;
      BeanInner item;
      // write wrapper tag
      jacksonSerializer.writeFieldName("element");
      jacksonSerializer.writeStartArray();
      for (int i=0; i<n; i++) {
        item=value[i];
        if (item==null) {
          jacksonSerializer.writeNull();
        } else {
          beanInnerBindMap.serializeOnJackson(item, jacksonSerializer);
        }
      }
      jacksonSerializer.writeEndArray();
    }
    jacksonSerializer.writeEndObject();
    jacksonSerializer.flush();
    return stream.toByteArray();
  } catch(Exception e) {
    e.printStackTrace();
    throw(new KriptonRuntimeException(e.getMessage()));
  }
}

源代码17 项目： kripton 文件： Bean64Table.java

/**
 * for attribute valueStringArray serialization
 */
public static byte[] serializeValueStringArray(String[] value) {
  if (value==null) {
    return null;
  }
  KriptonJsonContext context=KriptonBinder.jsonBind();
  try (KriptonByteArrayOutputStream stream=new KriptonByteArrayOutputStream(); JacksonWrapperSerializer wrapper=context.createSerializer(stream)) {
    JsonGenerator jacksonSerializer=wrapper.jacksonGenerator;
    jacksonSerializer.writeStartObject();
    int fieldCount=0;
    if (value!=null)  {
      fieldCount++;
      int n=value.length;
      String item;
      // write wrapper tag
      jacksonSerializer.writeFieldName("element");
      jacksonSerializer.writeStartArray();
      for (int i=0; i<n; i++) {
        item=value[i];
        if (item==null) {
          jacksonSerializer.writeNull();
        } else {
          jacksonSerializer.writeString(item);
        }
      }
      jacksonSerializer.writeEndArray();
    }
    jacksonSerializer.writeEndObject();
    jacksonSerializer.flush();
    return stream.toByteArray();
  } catch(Exception e) {
    e.printStackTrace();
    throw(new KriptonRuntimeException(e.getMessage()));
  }
}

源代码18 项目： sailfish-core 文件： JsonMessageConverter.java

private static void handleValue(Object value, IFieldStructure structure, JsonGenerator generator) throws IOException {
    generator.writeFieldName("value");

    if(value == null) {
        generator.writeNull();
        return;
    }

    if(value instanceof List<?>) {
        generator.writeStartArray();

        for(Object element : (List<?>)value) {
            if(element == null) {
                continue;
            }

            generator.writeStartObject();
            generator.writeStringField("type", getValueClass(element, structure));
            handleValue(element, structure, generator);
            generator.writeEndObject();
        }

        generator.writeEndArray();
    } else if(value instanceof IMessage) {
        convert((IMessage)value, structure, generator);
    } else if(value instanceof LocalDate || value instanceof LocalTime || value instanceof LocalDateTime) {
        generator.writeString(formatTemporal((TemporalAccessor)value));
    } else if(value instanceof Character) {
        generator.writeString(value.toString());
    } else {
        generator.writeObject(value);
    }

    if(structure != null && structure.isEnum()) {
        String alias = null;

        for(IAttributeStructure attribute : structure.getValues().values()) {
            if(attribute.getCastValue().equals(value)) {
                alias = attribute.getName();
                break;
            }
        }

        if(alias != null) {
            generator.writeStringField("alias", alias);
        }
    }
}

源代码19 项目： kripton 文件： Bean01BindMap.java

@Override
public int serializeOnJackson(Bean01 object, JsonGenerator jacksonSerializer) throws Exception {
  jacksonSerializer.writeStartObject();
  int fieldCount=0;

  // Serialized Field:

  // field id (mapped with "id")
  if (object.getId()!=null)  {
    fieldCount++;
    jacksonSerializer.writeNumberField("id", object.getId());
  }

  // field temp (mapped with "temp")
  if (object.temp!=null)  {
    fieldCount++;
    int n=object.temp.size();
    String item;
    // write wrapper tag
    jacksonSerializer.writeFieldName("temp");
    jacksonSerializer.writeStartArray();
    for (int i=0; i<n; i++) {
      item=object.temp.get(i);
      if (item==null) {
        jacksonSerializer.writeNull();
      } else {
        jacksonSerializer.writeString(item);
      }
    }
    jacksonSerializer.writeEndArray();
  }

  // field text (mapped with "text")
  if (object.getText()!=null)  {
    fieldCount++;
    jacksonSerializer.writeStringField("text", object.getText());
  }

  jacksonSerializer.writeEndObject();
  return fieldCount;
}

源代码20 项目： dropbox-sdk-java 文件： StoneSerializers.java

@Override
public void serialize(Void value, JsonGenerator g) throws IOException, JsonGenerationException {
    g.writeNull();
}