pgx 2.2 · OCaml Package

type v

v is opaque because the exact contents depend on Postgres types, so you could have two v's with the same value but different internal data representation, for example if you did a SELECT 'a'::bytea vs SELECT 'a'::varchar, the internal representation will be different, but the actual data if you use to_binary or to_string will be the same.

val compare_v : v -> v -> int

val sexp_of_v : v -> Sexplib0.Sexp.t

type t = v option

include Ppx_compare_lib.Comparable.S with type t := t

val compare : t Base__Ppx_compare_lib.compare

val sexp_of_t : t -> Sexplib0.Sexp.t

exception Conversion_failure of string

val required : ('a -> 'b) -> 'a option -> 'b

val opt : ('a -> t) -> 'a option -> t

val null : t

val of_binary : string -> t

val to_binary_exn : t -> string

val to_binary : t -> string option

val of_bool : bool -> t

val to_bool_exn : t -> bool

val to_bool : t -> bool option

val of_float : float -> t

val to_float_exn : t -> float

val to_float : t -> float option

type hstore = (string * string option) list

val compare_hstore : hstore -> hstore -> int

val sexp_of_hstore : hstore -> Sexplib0.Sexp.t

val of_hstore : hstore -> t

val to_hstore_exn : t -> hstore

val to_hstore : t -> hstore option

type inet = Ipaddr.t * int

val compare_inet : inet -> inet -> int

val sexp_of_inet : inet -> Sexplib0.Sexp.t

val of_inet : inet -> t

val to_inet_exn : t -> inet

val to_inet : t -> inet option

val of_int : int -> t

val to_int_exn : t -> int

val to_int : t -> int option

val of_int32 : int32 -> t

val to_int32_exn : t -> int32

val to_int32 : t -> int32 option

val of_int64 : int64 -> t

val to_int64_exn : t -> int64

val to_int64 : t -> int64 option

val of_list : t list -> t

val to_list_exn : t -> t list

val to_list : t -> t list option

type point = float * float

val compare_point : point -> point -> int

val sexp_of_point : point -> Sexplib0.Sexp.t

val of_point : point -> t

val to_point_exn : t -> point

val to_point : t -> point option

val of_string : string -> t

val to_string_exn : t -> string

val to_string : t -> string option

val unit : t

val to_unit_exn : t -> unit

val to_unit : t -> unit option

type uuid = Uuidm.t

val compare_uuid : uuid -> uuid -> int

val sexp_of_uuid : uuid -> Sexplib0.Sexp.t

val of_uuid : uuid -> t

val to_uuid_exn : t -> uuid

val to_uuid : t -> uuid option

val convert_failure : ?hint:string -> string -> string -> _

convert_failure type_ str raises Convert_failure with a useful error message. Add ~hint if there's additional info you can give the user about the error.

package pgx