package caqti

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Unified interface to relational database libraries

Install

Dune Dependency

github.com Readme Changelog Edit opam file Versions (21)

Authors

P

Petter A. Urkedal

Maintainers

P

paurkedal@gmail.com

Sources

caqti-0.10.2.tbz

sha256=d688bd22f6fde5be5a755900545fade0d5fdce6dbcb0b85770d02dad87c41e7c

md5=d18745a703da336054c0d27e78f8be8a

doc/caqti.v1/Caqti1_sigs/module-type-TUPLE/index.html

Module type `Caqti1_sigs.TUPLE`Source

Tuple decoding functions.

These functions extracts and decodes components from a returned tuple. The first argument is the index, starting from 0. The conversion performed are the inverse of the same named functions of PARAM, so the documentation is not repeated here.

Note! Calls to these functions are only valid during a callback from one of the query execution functions. Returning a partial call or embedding the call in a returned monad leads to undefined behaviour.

Sourcetype t

An abstract type for a tuple passed by a backend to callbacks during query execution.

Sourceval length : t -> int

Sourceval is_null : int -> t -> bool

Sourceval option : (int -> t -> 'a) -> int -> t -> 'a option

Sourceval bool : int -> t -> bool

Sourceval int : int -> t -> int

Sourceval int32 : int -> t -> int32

Sourceval int64 : int -> t -> int64

Sourceval float : int -> t -> float

Sourceval string : int -> t -> string

Sourceval bytes : int -> t -> bytes

Sourceval date_string : int -> t -> string

Sourceval date_tuple : int -> t -> int * int * int

Sourceval date_cl : int -> t -> CalendarLib.Date.t

Sourceval utc_float : int -> t -> float

Sourceval utc_string : int -> t -> string

Sourceval utc_cl : int -> t -> CalendarLib.Calendar.t