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8d0eb4de
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Dapper
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8d0eb4de
编写于
5月 02, 2011
作者:
S
simon.cropp
浏览文件
操作
浏览文件
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电子邮件补丁
差异文件
avoid some casting by more use of generics
上级
18c01151
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
10 addition
and
14 deletion
+10
-14
Dapper/SqlMapper.cs
Dapper/SqlMapper.cs
+10
-14
未找到文件。
Dapper/SqlMapper.cs
浏览文件 @
8d0eb4de
...
...
@@ -400,22 +400,22 @@ private static CacheInfo GetCacheInfo(object param, Identity identity)
// dynamic is passed in as Object ... by c# design
if
(
typeof
(
T
)
==
typeof
(
object
)
||
typeof
(
T
)
==
typeof
(
ExpandoObject
))
{
oDeserializer
=
GetDynamicDeserializer
(
reader
,
startBound
,
length
,
returnNullIfFirstMissing
);
return
GetDynamicDeserializer
<
T
>
(
reader
,
startBound
,
length
,
returnNullIfFirstMissing
);
}
else
if
(
typeof
(
T
).
IsClass
&&
typeof
(
T
)
!=
typeof
(
string
))
{
oDeserializer
=
GetClassDeserializer
<
T
>(
reader
,
startBound
,
length
,
returnNullIfFirstMissing
:
returnNullIfFirstMissing
);
return
GetClassDeserializer
<
T
>(
reader
,
startBound
,
length
,
returnNullIfFirstMissing
:
returnNullIfFirstMissing
);
}
else
{
oDeserializer
=
GetStructDeserializer
<
T
>(
reader
);
return
GetStructDeserializer
<
T
>(
reader
);
}
var
deserializer
=
(
Func
<
IDataReader
,
T
>)
oDeserializer
;
return
deserializer
;
}
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
)
{
var
colNames
=
new
List
<
string
>();
...
...
@@ -429,7 +429,7 @@ private static object GetDynamicDeserializer(IDataRecord reader, int startBound
colNames
.
Add
(
reader
.
GetName
(
i
));
}
Func
<
IDataReader
,
ExpandoObject
>
rval
=
return
r
=>
{
IDictionary
<
string
,
object
>
row
=
new
ExpandoObject
();
...
...
@@ -442,15 +442,14 @@ private static object GetDynamicDeserializer(IDataRecord reader, int startBound
row
[
colName
]
=
tmp
;
if
(
returnNullIfFirstMissing
&&
first
&&
tmp
==
null
)
{
return
null
;
return
default
(
T
)
;
}
i
++;
first
=
false
;
}
return
(
ExpandoObject
)
row
;
return
(
T
)
row
;
};
return
rval
;
}
[
Browsable
(
false
),
EditorBrowsable
(
EditorBrowsableState
.
Never
)]
[
Obsolete
(
"This method is for internal usage only"
,
true
)]
...
...
@@ -648,11 +647,9 @@ 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
;
deserializer
=
r
=>
return
r
=>
{
var
val
=
r
.
GetValue
(
0
);
if
(
val
==
DBNull
.
Value
)
...
...
@@ -661,7 +658,6 @@ private static object GetStructDeserializer<T>(IDataReader reader)
}
return
(
T
)
val
;
};
return
deserializer
;
}
public
static
Func
<
IDataReader
,
T
>
GetClassDeserializer
<
T
>(
IDataReader
reader
,
int
startBound
=
0
,
int
length
=
-
1
,
bool
returnNullIfFirstMissing
=
false
)
...
...
@@ -796,7 +792,7 @@ public IEnumerable<T> Read<T>()
if
(
reader
==
null
)
throw
new
ObjectDisposedException
(
GetType
().
Name
);
if
(
consumed
)
throw
new
InvalidOperationException
(
"Each grid can only be iterated once"
);
var
identity
=
new
Identity
(
sql
,
connection
,
typeof
(
T
),
null
);
var
deserializer
=
SqlMapper
.
GetDeserializer
<
T
>(
identity
,
reader
);
var
deserializer
=
GetDeserializer
<
T
>(
identity
,
reader
);
consumed
=
true
;
return
ReadDeferred
(
gridIndex
,
deserializer
);
}
...
...
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