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8ecd21cf
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Dapper
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体验新版 GitCode,发现更多精彩内容 >>
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8ecd21cf
编写于
5月 11, 2011
作者:
S
simon.cropp
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
avoid some casting by more use of generics
上级
c17a5454
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
13 addition
and
25 deletion
+13
-25
Dapper/SqlMapper.cs
Dapper/SqlMapper.cs
+13
-25
未找到文件。
Dapper/SqlMapper.cs
浏览文件 @
8ecd21cf
...
@@ -375,24 +375,17 @@ private static CacheInfo GetCacheInfo(object param, Identity identity)
...
@@ -375,24 +375,17 @@ private static CacheInfo GetCacheInfo(object param, Identity identity)
private
static
Func
<
IDataReader
,
T
>
GetDeserializer
<
T
>(
Identity
identity
,
IDataReader
reader
,
int
startBound
=
0
,
int
length
=
-
1
,
bool
returnNullIfFirstMissing
=
false
)
private
static
Func
<
IDataReader
,
T
>
GetDeserializer
<
T
>(
Identity
identity
,
IDataReader
reader
,
int
startBound
=
0
,
int
length
=
-
1
,
bool
returnNullIfFirstMissing
=
false
)
{
{
object
oDeserializer
;
// dynamic is passed in as Object ... by c# design
// dynamic is passed in as Object ... by c# design
if
(
typeof
(
T
)
==
typeof
(
object
)
||
typeof
(
T
)
==
typeof
(
FastExpando
))
if
(
typeof
(
T
)
==
typeof
(
object
)
||
typeof
(
T
)
==
typeof
(
FastExpando
))
{
oDeserializer
=
GetDynamicDeserializer
(
reader
,
startBound
,
length
,
returnNullIfFirstMissing
);
}
else
if
(
typeof
(
T
).
IsClass
&&
typeof
(
T
)
!=
typeof
(
string
))
{
{
oDeserializer
=
GetClassDeserializer
<
T
>(
reader
,
startBound
,
length
,
returnNullIfFirstMissing
:
returnNullIfFirstMissing
);
return
GetDynamicDeserializer
<
T
>(
reader
,
startBound
,
length
,
returnNullIfFirstMissing
);
}
}
else
if
(
typeof
(
T
).
IsClass
&&
typeof
(
T
)
!=
typeof
(
string
))
{
{
oDeserializer
=
GetStructDeserializer
<
T
>(
reader
);
return
GetClassDeserializer
<
T
>(
reader
,
startBound
,
length
,
returnNullIfFirstMissing
);
}
}
return
GetStructDeserializer
<
T
>(
reader
);
var
deserializer
=
(
Func
<
IDataReader
,
T
>)
oDeserializer
;
return
deserializer
;
}
}
private
class
FastExpando
:
DynamicObject
private
class
FastExpando
:
DynamicObject
...
@@ -401,9 +394,7 @@ private class FastExpando : DynamicObject
...
@@ -401,9 +394,7 @@ private class FastExpando : DynamicObject
public
static
FastExpando
Attach
(
IDictionary
<
string
,
object
>
data
)
public
static
FastExpando
Attach
(
IDictionary
<
string
,
object
>
data
)
{
{
FastExpando
expando
=
new
FastExpando
();
return
new
FastExpando
{
data
=
data
};
expando
.
data
=
data
;
return
expando
;
}
}
public
override
bool
TrySetMember
(
SetMemberBinder
binder
,
object
value
)
public
override
bool
TrySetMember
(
SetMemberBinder
binder
,
object
value
)
...
@@ -418,14 +409,14 @@ public override bool TryGetMember(GetMemberBinder binder, out object result)
...
@@ -418,14 +409,14 @@ public override bool TryGetMember(GetMemberBinder binder, out object result)
}
}
}
}
private
static
object
GetDynamicDeserializer
(
IDataRecord
reader
,
int
startBound
=
0
,
int
length
=
-
1
,
bool
returnNullIfFirstMissing
=
false
)
private
static
Func
<
IDataReader
,
T
>
GetDynamicDeserializer
<
T
>
(
IDataRecord
reader
,
int
startBound
=
0
,
int
length
=
-
1
,
bool
returnNullIfFirstMissing
=
false
)
{
{
if
(
length
==
-
1
)
if
(
length
==
-
1
)
{
{
length
=
reader
.
FieldCount
-
startBound
;
length
=
reader
.
FieldCount
-
startBound
;
}
}
Func
<
IDataReader
,
FastExpando
>
rval
=
return
r
=>
r
=>
{
{
IDictionary
<
string
,
object
>
row
=
new
Dictionary
<
string
,
object
>(
length
);
IDictionary
<
string
,
object
>
row
=
new
Dictionary
<
string
,
object
>(
length
);
...
@@ -436,13 +427,13 @@ private static object GetDynamicDeserializer(IDataRecord reader, int startBound
...
@@ -436,13 +427,13 @@ private static object GetDynamicDeserializer(IDataRecord reader, int startBound
row
[
r
.
GetName
(
i
)]
=
tmp
;
row
[
r
.
GetName
(
i
)]
=
tmp
;
if
(
returnNullIfFirstMissing
&&
i
==
startBound
&&
tmp
==
null
)
if
(
returnNullIfFirstMissing
&&
i
==
startBound
&&
tmp
==
null
)
{
{
return
null
;
return
default
(
T
)
;
}
}
}
}
return
FastExpando
.
Attach
(
row
);
//we know this is an object so it will not box
return
(
T
)(
object
)
FastExpando
.
Attach
(
row
);
};
};
return
rval
;
}
}
[
Browsable
(
false
),
EditorBrowsable
(
EditorBrowsableState
.
Never
)]
[
Browsable
(
false
),
EditorBrowsable
(
EditorBrowsableState
.
Never
)]
[
Obsolete
(
"This method is for internal usage only"
,
true
)]
[
Obsolete
(
"This method is for internal usage only"
,
true
)]
...
@@ -640,11 +631,9 @@ private static int ExecuteCommand(IDbConnection cnn, IDbTransaction tranaction,
...
@@ -640,11 +631,9 @@ private static int ExecuteCommand(IDbConnection cnn, IDbTransaction tranaction,
}
}
}
}
private
static
object
GetStructDeserializer
<
T
>(
IDataReader
reader
)
private
static
Func
<
IDataReader
,
T
>
GetStructDeserializer
<
T
>(
IDataReader
reader
)
{
{
Func
<
IDataReader
,
T
>
deserializer
=
null
;
return
r
=>
deserializer
=
r
=>
{
{
var
val
=
r
.
GetValue
(
0
);
var
val
=
r
.
GetValue
(
0
);
if
(
val
==
DBNull
.
Value
)
if
(
val
==
DBNull
.
Value
)
...
@@ -653,7 +642,6 @@ private static object GetStructDeserializer<T>(IDataReader reader)
...
@@ -653,7 +642,6 @@ private static object GetStructDeserializer<T>(IDataReader reader)
}
}
return
(
T
)
val
;
return
(
T
)
val
;
};
};
return
deserializer
;
}
}
public
static
Func
<
IDataReader
,
T
>
GetClassDeserializer
<
T
>(
IDataReader
reader
,
int
startBound
=
0
,
int
length
=
-
1
,
bool
returnNullIfFirstMissing
=
false
)
public
static
Func
<
IDataReader
,
T
>
GetClassDeserializer
<
T
>(
IDataReader
reader
,
int
startBound
=
0
,
int
length
=
-
1
,
bool
returnNullIfFirstMissing
=
false
)
...
...
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