Struct Value

pub struct Value {
    pub type: Option<Type>,
    pub kind: Option<Kind>,
}

Value represents a dynamically typed value. The typed fields in Value are used as a transport encoding for the actual value (which may be of a more complex type). See the documentation of the Type message for more details.

Fields

type: Option<Type>

The verified Type of this Value, if it cannot be inferred.

Read results will never specify the encoding for type since the value will already have been decoded by the server. Furthermore, the type will be omitted entirely if it can be inferred from a previous response. The exact semantics for inferring type will vary, and are therefore documented separately for each read method.

When using composite types (Struct, Array, Map) only the outermost Value will specify the type. This top-level type will define the types for any nested Struct' fields, Arrayelements, orMapkey/value pairs. If a nestedValueprovides atype` on write, the request will be rejected with INVALID_ARGUMENT.

kind: Option<Kind>

Options for transporting values within the protobuf type system. A given kind may support more than one type and vice versa. On write, this is roughly analogous to a GoogleSQL literal.

The value is NULL if none of the fields in kind is set. If type is also omitted on write, we will infer it based on the schema.

Trait Implementations

impl Clone for Value

fn clone(&self) -> Value

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Value

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Value

fn default() -> Self

Returns the “default value” for a type.

impl Message for Value

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode(&self, buf: &mut impl BufMut) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message to a buffer.

fn encode_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message to a newly allocated buffer.

fn encode_length_delimited( &self, buf: &mut impl BufMut, ) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message with a length-delimiter to a buffer.

fn encode_length_delimited_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes an instance of the message from a buffer.

fn decode_length_delimited(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes a length-delimited instance of the message from the buffer.

fn merge(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.

impl PartialEq for Value

fn eq(&self, other: &Value) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Value