Java Code Examples for org.bson.BsonWriter#writeNull()

private <S> void encodeValue(final BsonWriter writer, final EncoderContext encoderContext, final FieldModel<S> model,
                             final S propertyValue) {
    if (model.shouldSerialize(propertyValue)) {
        writer.writeName(model.getMappedName());
        if (propertyValue == null) {
            writer.writeNull();
        } else {
            try {
                encoderContext.encodeWithChildContext(model.getCachedCodec(), writer, propertyValue);
            } catch (CodecConfigurationException e) {
                throw new CodecConfigurationException(String.format("Failed to encode '%s'. Encoding '%s' errored with: %s",
                    morphiaCodec.getEntityModel().getName(), model.getMappedName(), e.getMessage()), e);
            }
        }
    }
}
 

@Override
protected void encodeStage(final BsonWriter writer, final Group group, final EncoderContext encoderContext) {
    writer.writeStartDocument();
    GroupId id = group.getId();
    if (id != null) {
        writer.writeName("_id");
        if(id.getDocument() != null) {
            id.getDocument().encode(getMapper(), writer, encoderContext);
        } else {
            id.getField().encode(getMapper(), writer, encoderContext);
        }
    } else {
        writer.writeNull("_id");
    }

    Fields<Group> fields = group.getFields();
    if(fields != null) {
        fields.encode(getMapper(), writer, encoderContext);
    }

    writer.writeEndDocument();
}
 

@Override
public void encode(final Mapper mapper, final BsonWriter writer, final EncoderContext encoderContext) {
    writer.writeStartDocument();
    writer.writeName(getOperation());
    if (operands.size() > 1) {
        writer.writeStartArray();
    }
    for (final Expression operand : operands) {
        if (operand != null) {
            ExpressionCodec.writeUnnamedExpression(mapper, writer, operand, encoderContext);
        } else {
            writer.writeNull();
        }
    }
    if (operands.size() > 1) {
        writer.writeEndArray();
    }
    writer.writeEndDocument();
}
 

@Override
public void encode(BsonWriter writer, T value, EncoderContext context) {
    if (value == null) {
        writer.writeNull();
    } else {
        writer.writeString(encodingMappings.get(value));
    }
}
 

@Override
public void encode(final BsonWriter writer, final Locale value, final EncoderContext encoderContext) {
    if (value == null) {
        writer.writeNull();
    } else {
        writer.writeString(value.toString());
    }
}
 

@Override
public void encode(final BsonWriter writer, final Collection<T> collection, final EncoderContext encoderContext) {
    writer.writeStartArray();
    for (final T value : collection) {
        if (value == null) {
            writer.writeNull();
        } else {
            codec.encode(writer, value, encoderContext);
        }
    }
    writer.writeEndArray();
}
 

@Override
public void encode(final BsonWriter writer, final Map<K, V> map, final EncoderContext encoderContext) {
    writer.writeStartDocument();
    for (final Entry<K, V> entry : map.entrySet()) {
        final K key = entry.getKey();
        writer.writeName((String) Conversions.convert(key, String.class));
        if (entry.getValue() == null) {
            writer.writeNull();
        } else {
            codec.encode(writer, entry.getValue(), encoderContext);
        }
    }
    writer.writeEndDocument();
}
 

protected void writeNamedValue(final String name, final Object named, final Mapper mapper, final BsonWriter writer,
                               final EncoderContext encoderContext) {
    writer.writeName(name);
    if (named != null) {
        Codec codec = mapper.getCodecRegistry().get(named.getClass());
        encoderContext.encodeWithChildContext(codec, writer, named);
    } else {
        writer.writeNull();
    }
}
 

protected void writeUnnamedValue(final Object value, final Mapper mapper, final BsonWriter writer,
                                 final EncoderContext encoderContext) {
    if (value != null) {
        Codec codec = mapper.getCodecRegistry().get(value.getClass());
        encoderContext.encodeWithChildContext(codec, writer, value);
    } else {
        writer.writeNull();
    }
}
 

@Override
public void encode(final BsonWriter writer, final T expression, final EncoderContext encoderContext) {
    if (expression != null) {
        expression.encode(mapper, writer, encoderContext);
    } else {
        writer.writeNull();
    }
}
 

@Override
public void encode(final Mapper mapper, final BsonWriter writer, final EncoderContext encoderContext) {
    if (getValue() != null) {
        Codec codec = mapper.getCodecRegistry().get(getValue().getClass());
        encoderContext.encodeWithChildContext(codec, writer, getValue());
    } else {
        writer.writeNull();
    }
}
 

static void write(BsonWriter writer, LocalDateTime value) {
    if (value == null) writer.writeNull();
    else writer.writeDateTime(value.atZone(ZoneId.systemDefault()).toInstant().toEpochMilli());
}
 

static void write(BsonWriter writer, ZonedDateTime value) {
    if (value == null) writer.writeNull();
    else writer.writeDateTime(value.toInstant().toEpochMilli());
}
 

protected void writeNull(BsonWriter writer, String name, Object value, EncoderContext ctx) {
  writer.writeNull();
}