Created
June 14, 2020 17:45
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FSharpDapperWrapper
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namespace FSharpDapperWrapper | |
open System.Data | |
module DapperFSharp = | |
open System.Data.SqlClient | |
open Dapper | |
let dbQuery<'Result> (query: string) (connection: SqlConnection): Async<'Result seq> = | |
connection.QueryAsync<'Result>(query) |> Async.AwaitTask | |
let dbQueryMultiple (query: string) (connection: SqlConnection): Async<SqlMapper.GridReader> = | |
connection.QueryMultipleAsync(query) |> Async.AwaitTask | |
let dbParametrizedQueryMultiple (query: string) (param: obj) (connection: SqlConnection): Async<SqlMapper.GridReader> = | |
connection.QueryMultipleAsync(query, param) |> Async.AwaitTask | |
let dbParamatrizedQuery<'Result> (query: string) (param: obj) (connection: SqlConnection): Async<'Result seq> = | |
connection.QueryAsync<'Result>(query, param) |> Async.AwaitTask | |
let dbParamatrizedExecute (sql: string) (param: obj) (connection: SqlConnection) = | |
connection.ExecuteAsync(sql, param) | |
|> Async.AwaitTask | |
|> Async.Ignore | |
let createSqlConnection connectionString = | |
OptionHandler.RegisterTypes() | |
async { | |
let connection = new SqlConnection(connectionString) | |
if connection.State <> ConnectionState.Open then do! connection.OpenAsync() |> Async.AwaitTask | |
return connection | |
} | |
type Dapper.SqlMapper.GridReader with | |
member reader.Read<'a>() = reader.ReadAsync<'a>() |> Async.AwaitTask | |
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namespace FSharpDapperWrapper | |
open Dapper | |
open System | |
type OptionHandler<'T> () = | |
inherit SqlMapper.TypeHandler<option<'T>> () | |
override __.SetValue (param, value) = | |
let valueOrNull = | |
match value with | |
| Some x -> box x | |
| None -> null | |
param.Value <- valueOrNull | |
override __.Parse value = | |
if Object.ReferenceEquals(value, null) || value = box DBNull.Value | |
then None | |
else Some (value :?> 'T) | |
module OptionHandler = | |
let RegisterTypes () = | |
SqlMapper.AddTypeHandler (OptionHandler<bool>()) | |
SqlMapper.AddTypeHandler (OptionHandler<byte>()) | |
SqlMapper.AddTypeHandler (OptionHandler<sbyte>()) | |
SqlMapper.AddTypeHandler (OptionHandler<int16>()) | |
SqlMapper.AddTypeHandler (OptionHandler<uint16>()) | |
SqlMapper.AddTypeHandler (OptionHandler<int32>()) | |
SqlMapper.AddTypeHandler (OptionHandler<uint32>()) | |
SqlMapper.AddTypeHandler (OptionHandler<int64>()) | |
SqlMapper.AddTypeHandler (OptionHandler<uint64>()) | |
SqlMapper.AddTypeHandler (OptionHandler<single>()) | |
SqlMapper.AddTypeHandler (OptionHandler<float>()) | |
SqlMapper.AddTypeHandler (OptionHandler<double>()) | |
SqlMapper.AddTypeHandler (OptionHandler<decimal>()) | |
SqlMapper.AddTypeHandler (OptionHandler<char>()) | |
SqlMapper.AddTypeHandler (OptionHandler<string>()) | |
SqlMapper.AddTypeHandler (OptionHandler<Guid>()) | |
SqlMapper.AddTypeHandler (OptionHandler<DateTime>()) | |
SqlMapper.AddTypeHandler (OptionHandler<DateTimeOffset>()) | |
SqlMapper.AddTypeHandler (OptionHandler<TimeSpan>()) | |
SqlMapper.AddTypeHandler (OptionHandler<DateTimeOffset>()) | |
SqlMapper.AddTypeHandler (OptionHandler<obj>()) |
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