PostgreSQL.Binary.Data

Models of supported data structures according to the serialisation format.

Documentation

type Array = (Vector ArrayDimension, Vector Content, Bool, OID)

A representation of a data serializable to the PostgreSQL array binary format.

Consists of a vector of dimensions, a vector of encoded elements, a flag specifying, whether it contains any nulls, and an oid.

type ArrayDimension = (Word32, Word32)

A width and a lower bound.

Currently the lower bound is only allowed to have a value of 1.

type Content = Maybe ByteString

An encoded value. Nothing if it represents a NULL.

type OID = Word32

A Postgres OID of a type.

type Composite = Vector (OID, Content)

A representation of a composite Postgres data (Record or Row).

type HStore = Vector (ByteString, Content)

HStore.

type UUID = (Word32, Word32, Word32, Word32)

The four components of UUID.

type Numeric = (Int16, Word16, Vector Int16)

Representation of the PostgreSQL Numeric encoding.

Consists of the following components:

• Point index
• Sign code
• Components