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0af519aa
编写于
8月 23, 2012
作者:
A
Alexey Milovidov
浏览文件
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电子邮件补丁
差异文件
dbms: development [#CONV-2944].
上级
b220d5d2
变更
5
隐藏空白更改
内联
并排
Showing
5 changed file
with
90 addition
and
4 deletion
+90
-4
dbms/include/DB/DataTypes/DataTypeTuple.h
dbms/include/DB/DataTypes/DataTypeTuple.h
+35
-0
dbms/include/DB/DataTypes/IDataTypeDummy.h
dbms/include/DB/DataTypes/IDataTypeDummy.h
+1
-1
dbms/include/DB/Functions/FunctionsMiscellaneous.h
dbms/include/DB/Functions/FunctionsMiscellaneous.h
+49
-2
dbms/include/DB/Interpreters/Set.h
dbms/include/DB/Interpreters/Set.h
+1
-1
dbms/src/Functions/FunctionsLibrary.cpp
dbms/src/Functions/FunctionsLibrary.cpp
+4
-0
未找到文件。
dbms/include/DB/DataTypes/DataTypeTuple.h
0 → 100644
浏览文件 @
0af519aa
#pragma once
#include <DB/DataTypes/IDataTypeDummy.h>
namespace
DB
{
/** Тип данных - кортеж.
* Используется только как промежуточный вариант при вычислении выражений.
*/
class
DataTypeTuple
:
public
IDataTypeDummy
{
private:
DataTypes
elems
;
public:
DataTypeTuple
(
DataTypes
elems_
)
:
elems
(
elems_
)
{}
std
::
string
getName
()
const
{
std
::
stringstream
s
;
s
<<
"Tuple("
;
for
(
DataTypes
::
const_iterator
it
=
elems
.
begin
();
it
!=
elems
.
end
();
++
it
)
s
<<
(
it
==
elems
.
begin
()
?
""
:
", "
)
<<
(
*
it
)
->
getName
();
s
<<
")"
;
return
s
.
str
();
}
SharedPtr
<
IDataType
>
clone
()
const
{
return
new
DataTypeTuple
(
elems
);
}
};
}
dbms/include/DB/DataTypes/IDataTypeDummy.h
浏览文件 @
0af519aa
...
...
@@ -14,7 +14,7 @@ namespace DB
class
IDataTypeDummy
:
public
IDataType
{
private:
void
throwNoSerialization
()
void
throwNoSerialization
()
const
{
throw
Exception
(
"Serialization is not implemented for data type "
+
getName
(),
ErrorCodes
::
NOT_IMPLEMENTED
);
}
...
...
dbms/include/DB/Functions/FunctionsMiscellaneous.h
浏览文件 @
0af519aa
...
...
@@ -8,11 +8,13 @@
#include <DB/DataTypes/DataTypeFixedString.h>
#include <DB/DataTypes/DataTypeDate.h>
#include <DB/DataTypes/DataTypeDateTime.h>
#include <DB/DataTypes/DataTypeTuple.h>
#include <DB/Columns/ColumnString.h>
#include <DB/Columns/ColumnFixedString.h>
#include <DB/Columns/ColumnConst.h>
#include <DB/Columns/ColumnVector.h>
#include <DB/Columns/ColumnSet.h>
#include <DB/Columns/ColumnTuple.h>
#include <DB/Functions/IFunction.h>
...
...
@@ -358,9 +360,54 @@ public:
if
(
!
column_set
)
throw
Exception
(
"Second argument for function '"
+
getName
()
+
"' must be Set."
,
ErrorCodes
::
ILLEGAL_COLUMN
);
/// Столбцы, которые проверяются на принадлежность множеству.
ColumnNumbers
left_arguments
;
block
.
getByPosition
(
result
).
column
=
dynamic_cast
<
const
IColumnConst
&>
(
argument
).
convertToFullColumn
();
/// Первый аргумент может быть tuple или одиночным столбцом.
const
ColumnTuple
*
tuple
=
dynamic_cast
<
const
ColumnTuple
*>
(
&*
block
.
getByPosition
(
arguments
[
0
]).
column
);
if
(
tuple
)
{
/// Находим в блоке столбцы из tuple.
const
Block
&
tuple_elems
=
tuple
->
getData
();
size_t
tuple_size
=
tuple_elems
.
columns
();
for
(
size_t
i
=
0
;
i
<
tuple_size
;
++
i
)
left_arguments
.
push_back
(
block
.
getPositionByName
(
tuple_elems
.
getByPosition
(
i
).
name
));
}
else
left_arguments
.
push_back
(
arguments
[
0
]);
column_set
->
getData
()
->
execute
(
block
,
left_arguments
,
result
);
}
};
class
FunctionTuple
:
public
IFunction
{
public:
/// Получить имя функции.
String
getName
()
const
{
return
"tuple"
;
}
/// Получить тип результата по типам аргументов. Если функция неприменима для данных аргументов - кинуть исключение.
DataTypePtr
getReturnType
(
const
DataTypes
&
arguments
)
const
{
if
(
arguments
.
size
()
<
2
)
throw
Exception
(
"Function tuple requires at least two arguments."
,
ErrorCodes
::
NUMBER_OF_ARGUMENTS_DOESNT_MATCH
);
return
new
DataTypeTuple
(
arguments
);
}
/// Выполнить функцию над блоком.
void
execute
(
Block
&
block
,
const
ColumnNumbers
&
arguments
,
size_t
result
)
{
Block
tuple_block
;
for
(
ColumnNumbers
::
const_iterator
it
=
arguments
.
begin
();
it
!=
arguments
.
end
();
++
it
)
tuple_block
.
insert
(
block
.
getByPosition
(
*
it
));
block
.
getByPosition
(
result
).
column
=
new
ColumnTuple
(
tuple_block
);
}
};
...
...
dbms/include/DB/Interpreters/Set.h
浏览文件 @
0af519aa
...
...
@@ -64,7 +64,7 @@ struct Set
/** Для указанных столбцов блока проверить принадлежность их значений множеству.
* Записать результат в столбец в позиции result.
*/
void
execute
(
Block
&
block
,
const
ColumnNumbers
&
arguments
,
size_t
result
)
;
void
execute
(
Block
&
block
,
const
ColumnNumbers
&
arguments
,
size_t
result
)
const
{
/* TODO */
}
};
typedef
SharedPtr
<
Set
>
SetPtr
;
...
...
dbms/src/Functions/FunctionsLibrary.cpp
浏览文件 @
0af519aa
...
...
@@ -114,6 +114,10 @@ namespace FunctionsLibrary
(
"toTypeName"
,
new
FunctionToTypeName
)
(
"blockSize"
,
new
FunctionBlockSize
)
(
"materialize"
,
new
FunctionMaterialize
)
(
"tuple"
,
new
FunctionTuple
)
(
"in"
,
new
FunctionIn
)
(
"notIn"
,
new
FunctionIn
(
true
))
;
return
res
;
...
...
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