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7114aced
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7114aced
编写于
4月 23, 2018
作者:
T
tristaZero
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差异文件
get owner for star select item.
上级
a04c2a65
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
25 addition
and
11 deletion
+25
-11
sharding-core/src/main/java/io/shardingjdbc/core/parsing/parser/clause/SelectListClauseParser.java
...bc/core/parsing/parser/clause/SelectListClauseParser.java
+25
-11
未找到文件。
sharding-core/src/main/java/io/shardingjdbc/core/parsing/parser/clause/SelectListClauseParser.java
浏览文件 @
7114aced
...
...
@@ -83,7 +83,10 @@ public class SelectListClauseParser implements SQLClauseParser {
result
=
parseAggregationSelectItem
(
selectStatement
);
parseRestSelectItem
(
selectStatement
);
}
else
{
result
=
new
CommonSelectItem
(
SQLUtil
.
getExactlyValue
(
parseCommonSelectItem
(
selectStatement
)
+
parseRestSelectItem
(
selectStatement
)),
aliasExpressionParser
.
parseSelectItemAlias
());
SelectItem
selectItem
=
parseCommonOrStarSelectItem
(
selectStatement
);
result
=
selectItem
instanceof
StarSelectItem
?
selectItem
:
new
CommonSelectItem
(
SQLUtil
.
getExactlyValue
(
selectItem
.
getExpression
()
+
parseRestSelectItem
(
selectStatement
)),
aliasExpressionParser
.
parseSelectItemAlias
());
}
return
result
;
}
...
...
@@ -110,17 +113,13 @@ public class SelectListClauseParser implements SQLClauseParser {
return
new
StarSelectItem
(
Optional
.<
String
>
absent
());
}
private
boolean
isAggregationSelectItem
()
{
return
lexerEngine
.
equalAny
(
DefaultKeyword
.
MAX
,
DefaultKeyword
.
MIN
,
DefaultKeyword
.
SUM
,
DefaultKeyword
.
AVG
,
DefaultKeyword
.
COUNT
);
}
private
SelectItem
parseAggregationSelectItem
(
final
SelectStatement
selectStatement
)
{
AggregationType
aggregationType
=
AggregationType
.
valueOf
(
lexerEngine
.
getCurrentToken
().
getLiterals
().
toUpperCase
());
private
SelectItem
parseStarSelectItem
(
final
String
owner
)
{
lexerEngine
.
nextToken
();
return
new
AggregationSelectItem
(
aggregationType
,
lexerEngine
.
skipParentheses
(
selectStatement
),
aliasExpressionParser
.
parseSelectItemAlias
());
aliasExpressionParser
.
parseSelectItemAlias
();
return
new
StarSelectItem
(
Optional
.
fromNullable
(
owner
));
}
private
S
tring
parseCommon
SelectItem
(
final
SelectStatement
selectStatement
)
{
private
S
electItem
parseCommonOrStar
SelectItem
(
final
SelectStatement
selectStatement
)
{
String
literals
=
lexerEngine
.
getCurrentToken
().
getLiterals
();
int
position
=
lexerEngine
.
getCurrentToken
().
getEndPosition
()
-
literals
.
length
();
StringBuilder
result
=
new
StringBuilder
();
...
...
@@ -135,10 +134,24 @@ public class SelectListClauseParser implements SQLClauseParser {
}
result
.
append
(
lexerEngine
.
getCurrentToken
().
getLiterals
());
lexerEngine
.
nextToken
();
if
(
lexerEngine
.
equalAny
(
Symbol
.
STAR
))
{
return
parseStarSelectItem
(
literals
);
}
result
.
append
(
lexerEngine
.
getCurrentToken
().
getLiterals
());
lexerEngine
.
nextToken
();
}
return
result
.
toString
();
return
new
CommonSelectItem
(
result
.
toString
(),
Optional
.<
String
>
absent
());
}
private
boolean
isAggregationSelectItem
()
{
return
lexerEngine
.
equalAny
(
DefaultKeyword
.
MAX
,
DefaultKeyword
.
MIN
,
DefaultKeyword
.
SUM
,
DefaultKeyword
.
AVG
,
DefaultKeyword
.
COUNT
);
}
private
SelectItem
parseAggregationSelectItem
(
final
SelectStatement
selectStatement
)
{
AggregationType
aggregationType
=
AggregationType
.
valueOf
(
lexerEngine
.
getCurrentToken
().
getLiterals
().
toUpperCase
());
lexerEngine
.
nextToken
();
return
new
AggregationSelectItem
(
aggregationType
,
lexerEngine
.
skipParentheses
(
selectStatement
),
aliasExpressionParser
.
parseSelectItemAlias
());
}
private
String
parseRestSelectItem
(
final
SelectStatement
selectStatement
)
{
...
...
@@ -146,7 +159,8 @@ public class SelectListClauseParser implements SQLClauseParser {
while
(
lexerEngine
.
equalAny
(
Symbol
.
getOperators
()))
{
result
.
append
(
lexerEngine
.
getCurrentToken
().
getLiterals
());
lexerEngine
.
nextToken
();
result
.
append
(
parseCommonSelectItem
(
selectStatement
));
SelectItem
selectItem
=
parseCommonOrStarSelectItem
(
selectStatement
);
result
.
append
(
selectItem
.
getExpression
());
}
return
result
.
toString
();
}
...
...
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