Struct Value 

pub struct Value(/* private fields */);

Value is a transparent wrapper around a protobuf value. It adds helper methods for accessing the underlying value.

Implementations

impl Value

pub fn kind(&self) -> Kind

Returns the kind of the value.

pub fn try_as_string(&self) -> Option<&str>

Returns the underlying string value if the kind is String.

pub fn as_string(&self) -> &str

Returns the underlying string value. Panics if the kind is not String.

pub fn try_as_bool(&self) -> Option<bool>

Returns the underlying bool value if the kind is Bool.

pub fn as_bool(&self) -> bool

Returns the underlying bool value. Panics if the kind is not Bool.

pub fn try_as_f64(&self) -> Option<f64>

Returns the underlying number value if the kind is Number.

pub fn as_f64(&self) -> f64

Returns the underlying number value. Panics if the kind is not Number.

pub fn try_as_struct(&self) -> Option<&Struct>

Returns the underlying struct value as a map of Values if the kind is Struct.

pub fn as_struct(&self) -> &Struct

Returns the underlying struct value. Panics if the kind is not Struct.

pub fn try_as_list(&self) -> Option<&List>

Returns the underlying list value as a vector of Values if the kind is List.

pub fn as_list(&self) -> &List

Returns the underlying list value. Panics if the kind is not List.

Trait Implementations

impl Clone for Value

fn clone(&self) -> Value

Returns a duplicate 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() -> Value

Returns the “default value” for a type.

impl FromValue for Value

fn from_value(value: &Value, _type: &Type) -> Result<Self, ConvertError>

Converts a Spanner value into the target Rust type, using the provided Spanner Type metadata for compatibility checks.

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

impl ToValue for Value

fn to_value(&self) -> Value

Encodes this Rust type as a Spanner Value.