Crate cufflink_pgcodec 

How a Postgres value becomes JSON and a JSON parameter becomes a Postgres value: one codec for the platform’s host functions, its data routes and the native test host, so the three cannot disagree.

Re-exports

pub use bind::bind;

pub use bind::coerce;

pub use bind::Bound;

pub use error::from_pg;

pub use error::server_message;

pub use numeric::NumericError;

pub use numeric::PgNumeric;

pub use row_json::base_type;

pub use row_json::check_columns_v2;

pub use row_json::column_to_json;

pub use row_json::column_to_json_v2;

pub use row_json::PgInterval;

Modules

bind

Prepare-then-coerce binding: Postgres reports each parameter’s type when the statement is prepared, and every tagged guest parameter is converted to exactly that type, losslessly, or refused with a message naming it.

error

A Postgres failure as a guest receives it: the structured DbError of db_call, and the text of the legacy calls.

numeric

Exact Postgres NUMERIC values: decimal text in, the binary wire format (base-10000 digits, weight, sign, display scale) out, and back, with NaN and the infinities. No precision is lost in either direction.

pooler

What sits between a pool and Postgres, and the guest statements a transaction pooler cannot carry.

render

A statement’s rows as a guest receives them.

roles

What the platform hands a service’s database role, read the same by its provisioning and by the native test host.

row_json

session

The settings statements run under on a session: the service’s schema first on the search path, the statement’s time bound, and the role it runs as. Whatever holds the session sends these texts, so the platform’s sessions, its migration executor and the native test host set up a session alike.

statement

What a guest’s statement is, judged by its leading keywords: whatever runs a guest’s SQL decides the same way how it may run.

tx

The rules of an interactive transaction, as a pure state machine: what an open or failed transaction admits, where it stands afterwards, and which savepoints it holds. Whatever holds the connection applies them.