Struct FuncJsonExtract 

pub struct FuncJsonExtract {
    pub base: Box<Expr>,
    pub path: Vec<String>,
    pub ty: Type,
}

Extracts the value at a key path from a document-stored value.

Produced when a query filters on a field inside a #[document] embed: User::FIELDS.preferences().theme() lowers to a JsonExtract over the preferences document column with path = ["theme"]. The SQL serializer renders it per dialect — col->'a'->>'b' on PostgreSQL, json_extract(col, '$.a.b') on SQLite / MySQL.

Fields

base: Box<Expr>

The document value to extract from — typically a column reference.

path: Vec<String>

The key path from the document root to the extracted field, in order.

ty: Type

The type of the extracted value (the leaf field’s type).

Trait Implementations

impl Clone for FuncJsonExtract

fn clone(&self) -> FuncJsonExtract

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FuncJsonExtract

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

Formats the value using the given formatter.

impl From<FuncJsonExtract> for Expr

fn from(value: FuncJsonExtract) -> Expr

Converts to this type from the input type.

impl From<FuncJsonExtract> for ExprFunc

fn from(value: FuncJsonExtract) -> ExprFunc

Converts to this type from the input type.

impl PartialEq for FuncJsonExtract

fn eq(&self, other: &FuncJsonExtract) -> 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 FuncJsonExtract