Enum Value 

pub enum Value {
    Null,
    Bool(bool),
    Int(i64),
    Float(f64),
    String(String),
    Bytes(Vec<u8>),
    List(Vec<Value>),
    Map(BTreeMap<String, Value>),
}

Variants

Null

Bool(bool)

Int(i64)

Float(f64)

String(String)

Bytes(Vec<u8>)

List(Vec<Value>)

Map(BTreeMap<String, Value>)

Implementations

impl Value

pub fn to_plain_json(&self) -> Value

Convert to the plain, untagged JSON shape used for a schema Json column’s on-disk representation (cratestack#162): an empty map becomes {}, a list becomes [...], Value::Null becomes null — never Value’s own derived, externally-tagged wire format ({"Map": {}}), which stays reserved for the typed/wire contexts that need the exact variant back (auth claims, audit payloads, RPC error details).

Value::Bytes has no native JSON representation, so it is base64-encoded into a JSON string. That direction is lossy on the way back: Value::from_plain_json has no way to tell a base64-looking string from an ordinary one, so it always decodes JSON strings as Value::String. Callers that need Bytes to round-trip losslessly should use a Bytes column, not Json.

pub fn from_plain_json(json: Value) -> Value

Inverse of Value::to_plain_json: parse a plain JSON value — cratestack’s own past writes, legacy rows, or data written by any other JSON producer — into a Value. Every JSON number that fits in an i64 decodes as Value::Int; everything else numeric decodes as Value::Float. Never produces Value::Bytes — see the round-trip caveat on Value::to_plain_json.

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<(), Error>

Formats the value using the given formatter.

impl Default for Value

Default is required by every generated model struct since #51 (column projection): non-selected fields hold T::default() so the returned Projection<T> is constructable without re-fetching. Value::Null is the natural identity — JSON columns surfacing as cratestack::Value default to “no payload” until the next read.

fn default() -> Value

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Value

fn deserialize<__D>( __deserializer: __D, ) -> Result<Value, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl IntoSqlValue for Value

fn into_sql_value(self) -> SqlValue

impl PartialEq for Value

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Value

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Value