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Simple.Extensions/Simple.Extensions.Npgsql/NpgsqlRepository.cs at main · blckmn/Simple.Extensions · GitHub
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NpgsqlRepository.cs
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NpgsqlRepository.cs
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using
System
;
using
System
.
Collections
.
Generic
;
using
System
.
Data
;
using
System
.
Data
.
Common
;
using
System
.
Threading
.
Tasks
;
using
Npgsql
;
namespace
Simple
.
Extensions
.
Npgsql
{
public
class
NpgsqlRepository
{
public
string
ConnectionString
{
get
;
set
;
}
protected
NpgsqlConnection
CreateConnection
(
)
{
if
(
string
.
IsNullOrWhiteSpace
(
ConnectionString
)
)
{
throw
new
ArgumentException
(
nameof
(
ConnectionString
)
)
;
}
return
new
NpgsqlConnection
(
ConnectionString
)
;
}
public
async
Task
Transaction
(
Func
<
NpgsqlTransaction
,
Task
>
paramAction
)
{
using
(
var
connection
=
CreateConnection
(
)
)
{
await
connection
.
OpenAsync
(
)
;
using
(
var
transaction
=
connection
.
BeginTransaction
(
IsolationLevel
.
Serializable
)
)
{
await
paramAction
(
transaction
)
;
await
transaction
.
CommitAsync
(
)
;
}
}
}
public
async
Task
<
T
>
GetRecord
<
T
>
(
string
sql
,
Func
<
DbDataReader
,
T
>
resultFunc
)
{
return
await
GetRecord
(
sql
,
null
,
resultFunc
)
;
}
public
async
Task
<
T
>
GetRecord
<
T
>
(
string
sql
,
Action
<
NpgsqlParameterCollection
>
paramAction
,
Func
<
DbDataReader
,
T
>
resultFunc
)
{
if
(
resultFunc
==
null
)
{
throw
new
ArgumentNullException
(
nameof
(
resultFunc
)
)
;
}
using
(
var
connection
=
CreateConnection
(
)
)
{
await
connection
.
OpenAsync
(
)
;
using
(
var
command
=
new
NpgsqlCommand
(
sql
,
connection
)
)
{
paramAction
?
.
Invoke
(
command
.
Parameters
)
;
using
(
var
reader
=
await
command
.
ExecuteReaderAsync
(
)
)
{
return
await
reader
.
ReadAsync
(
)
?
resultFunc
(
reader
)
:
default
;
}
}
}
}
public
async
Task
<
T
>
GetRecord
<
T
>
(
string
sql
,
Action
<
NpgsqlParameterCollection
>
paramAction
,
Func
<
DbDataReader
,
T
>
resultFunc
,
NpgsqlTransaction
transaction
)
{
if
(
resultFunc
==
null
)
{
throw
new
ArgumentNullException
(
nameof
(
resultFunc
)
)
;
}
if
(
transaction
==
null
)
{
return
await
GetRecord
(
sql
,
paramAction
,
resultFunc
)
;
}
using
(
var
command
=
new
NpgsqlCommand
(
sql
,
transaction
.
Connection
,
transaction
)
)
{
paramAction
?
.
Invoke
(
command
.
Parameters
)
;
using
(
var
reader
=
await
command
.
ExecuteReaderAsync
(
)
)
{
return
await
reader
.
ReadAsync
(
)
?
resultFunc
.
Invoke
(
reader
)
:
default
;
}
}
}
public
async
Task
<
List
<
T
>
>
GetRecords
<
T
>
(
string
sql
,
Func
<
DbDataReader
,
T
>
resultFunc
)
{
return
await
GetRecords
(
sql
,
null
,
resultFunc
)
;
}
public
async
Task
<
List
<
T
>
>
GetRecords
<
T
>
(
string
sql
,
Action
<
NpgsqlParameterCollection
>
paramAction
,
Func
<
DbDataReader
,
T
>
resultFunc
)
{
if
(
resultFunc
==
null
)
{
throw
new
ArgumentNullException
(
nameof
(
resultFunc
)
)
;
}
using
(
var
connection
=
CreateConnection
(
)
)
{
await
connection
.
OpenAsync
(
)
;
using
(
var
command
=
new
NpgsqlCommand
(
sql
,
connection
)
)
{
paramAction
?
.
Invoke
(
command
.
Parameters
)
;
using
(
var
reader
=
command
.
ExecuteReader
(
)
)
{
var
result
=
new
List
<
T
>
(
)
;
while
(
await
reader
.
ReadAsync
(
)
)
{
result
.
Add
(
resultFunc
.
Invoke
(
reader
)
)
;
}
return
result
;
}
}
}
}
public
async
Task
<
long
>
NonQuery
(
string
sql
,
Action
<
NpgsqlParameterCollection
>
paramAction
,
NpgsqlTransaction
transaction
=
null
)
{
if
(
transaction
!=
null
)
{
using
(
var
command
=
new
NpgsqlCommand
(
sql
,
transaction
.
Connection
,
transaction
)
)
{
paramAction
?
.
Invoke
(
command
.
Parameters
)
;
return
await
command
.
ExecuteNonQueryAsync
(
)
;
}
}
using
(
var
connection
=
CreateConnection
(
)
)
{
await
connection
.
OpenAsync
(
)
;
using
(
var
command
=
new
NpgsqlCommand
(
sql
,
connection
)
)
{
paramAction
?
.
Invoke
(
command
.
Parameters
)
;
return
await
command
.
ExecuteNonQueryAsync
(
)
;
}
}
}
public
async
Task
<
T
>
Scalar
<
T
>
(
string
sql
,
Action
<
NpgsqlParameterCollection
>
paramAction
=
null
)
where
T
:
class
{
using
(
var
connection
=
CreateConnection
(
)
)
{
await
connection
.
OpenAsync
(
)
;
using
(
var
command
=
new
NpgsqlCommand
(
sql
,
connection
)
)
{
paramAction
?
.
Invoke
(
command
.
Parameters
)
;
return
(
await
command
.
ExecuteScalarAsync
(
)
as
T
)
;
}
}
}
}
}
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