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h2database
Commits
4c241336
提交
4c241336
authored
11月 20, 2010
作者:
Thomas Mueller
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
Improved date / time arithmetics.
上级
1114d838
隐藏空白字符变更
内嵌
并排
正在显示
3 个修改的文件
包含
144 行增加
和
34 行删除
+144
-34
Operation.java
h2/src/main/org/h2/expression/Operation.java
+105
-34
ValueTime.java
h2/src/main/org/h2/value/ValueTime.java
+24
-0
ValueTimestamp.java
h2/src/main/org/h2/value/ValueTimestamp.java
+15
-0
没有找到文件。
h2/src/main/org/h2/expression/Operation.java
浏览文件 @
4c241336
...
@@ -55,6 +55,7 @@ public class Operation extends Expression {
...
@@ -55,6 +55,7 @@ public class Operation extends Expression {
private
int
opType
;
private
int
opType
;
private
Expression
left
,
right
;
private
Expression
left
,
right
;
private
int
dataType
;
private
int
dataType
;
private
boolean
convertRight
=
true
;
public
Operation
(
int
opType
,
Expression
left
,
Expression
right
)
{
public
Operation
(
int
opType
,
Expression
left
,
Expression
right
)
{
this
.
opType
=
opType
;
this
.
opType
=
opType
;
...
@@ -64,37 +65,48 @@ public class Operation extends Expression {
...
@@ -64,37 +65,48 @@ public class Operation extends Expression {
public
String
getSQL
()
{
public
String
getSQL
()
{
String
sql
;
String
sql
;
switch
(
opType
)
{
if
(
opType
==
NEGATE
)
{
case
NEGATE:
// don't remove the space, otherwise it might end up some thing like
// don't remove the space, otherwise it might end up some thing like
// --1 which is a line remark
// --1 which is a line remark
sql
=
"- "
+
left
.
getSQL
();
sql
=
"- "
+
left
.
getSQL
();
break
;
}
else
{
// don't remove the space, otherwise it might end up some thing like
// --1 which is a line remark
sql
=
left
.
getSQL
()
+
" "
+
getOperationToken
()
+
" "
+
right
.
getSQL
();
}
return
"("
+
sql
+
")"
;
}
private
String
getOperationToken
()
{
switch
(
opType
)
{
case
NEGATE:
return
"-"
;
case
CONCAT:
case
CONCAT:
sql
=
left
.
getSQL
()
+
" || "
+
right
.
getSQL
();
return
"||"
;
break
;
case
PLUS:
case
PLUS:
sql
=
left
.
getSQL
()
+
" + "
+
right
.
getSQL
();
return
"+"
;
break
;
case
MINUS:
case
MINUS:
sql
=
left
.
getSQL
()
+
" - "
+
right
.
getSQL
();
return
"-"
;
break
;
case
MULTIPLY:
case
MULTIPLY:
sql
=
left
.
getSQL
()
+
" * "
+
right
.
getSQL
();
return
"*"
;
break
;
case
DIVIDE:
case
DIVIDE:
sql
=
left
.
getSQL
()
+
" / "
+
right
.
getSQL
();
return
"/"
;
break
;
default
:
default
:
throw
DbException
.
throwInternalError
(
"opType="
+
opType
);
throw
DbException
.
throwInternalError
(
"opType="
+
opType
);
}
}
return
"("
+
sql
+
")"
;
}
}
public
Value
getValue
(
Session
session
)
{
public
Value
getValue
(
Session
session
)
{
Value
l
=
left
.
getValue
(
session
).
convertTo
(
dataType
);
Value
l
=
left
.
getValue
(
session
).
convertTo
(
dataType
);
Value
r
=
right
==
null
?
null
:
right
.
getValue
(
session
).
convertTo
(
dataType
);
Value
r
;
if
(
right
==
null
)
{
r
=
null
;
}
else
{
r
=
right
.
getValue
(
session
);
if
(
convertRight
)
{
r
=
r
.
convertTo
(
dataType
);
}
}
switch
(
opType
)
{
switch
(
opType
)
{
case
NEGATE:
case
NEGATE:
return
l
==
ValueNull
.
INSTANCE
?
l
:
l
.
negate
();
return
l
==
ValueNull
.
INSTANCE
?
l
:
l
.
negate
();
...
@@ -180,28 +192,81 @@ public class Operation extends Expression {
...
@@ -180,28 +192,81 @@ public class Operation extends Expression {
}
else
{
}
else
{
dataType
=
Value
.
DECIMAL
;
dataType
=
Value
.
DECIMAL
;
}
}
}
else
if
(
l
==
Value
.
DATE
||
l
==
Value
.
TIMESTAMP
)
{
}
else
if
(
l
==
Value
.
DATE
||
l
==
Value
.
TIMESTAMP
||
l
==
Value
.
TIME
||
if
(
r
==
Value
.
INT
&&
(
opType
==
PLUS
||
opType
==
MINUS
))
{
r
==
Value
.
DATE
||
r
==
Value
.
TIMESTAMP
||
r
==
Value
.
TIME
)
{
// Oracle date add
if
(
opType
==
PLUS
)
{
Function
f
=
Function
.
getFunction
(
session
.
getDatabase
(),
"DATEADD"
);
if
(
r
!=
Value
.
getHigherOrder
(
l
,
r
))
{
f
.
setParameter
(
0
,
ValueExpression
.
get
(
ValueString
.
get
(
"DAY"
)));
// order left and right: INT < TIME < DATE < TIMESTAMP
if
(
opType
==
MINUS
)
{
swap
();
int
t
=
l
;
l
=
r
;
r
=
t
;
}
if
(
l
==
Value
.
INT
)
{
// Oracle date add
Function
f
=
Function
.
getFunction
(
session
.
getDatabase
(),
"DATEADD"
);
f
.
setParameter
(
0
,
ValueExpression
.
get
(
ValueString
.
get
(
"DAY"
)));
f
.
setParameter
(
1
,
left
);
f
.
setParameter
(
2
,
right
);
f
.
doneWithParameters
();
return
f
.
optimize
(
session
);
}
else
if
(
l
==
Value
.
TIME
&&
r
==
Value
.
TIME
)
{
dataType
=
Value
.
TIME
;
return
this
;
}
else
if
(
l
==
Value
.
TIME
)
{
dataType
=
Value
.
TIMESTAMP
;
return
this
;
}
}
else
if
(
opType
==
MINUS
)
{
if
((
l
==
Value
.
DATE
||
l
==
Value
.
TIMESTAMP
)
&&
r
==
Value
.
INT
)
{
// Oracle date subtract
Function
f
=
Function
.
getFunction
(
session
.
getDatabase
(),
"DATEADD"
);
f
.
setParameter
(
0
,
ValueExpression
.
get
(
ValueString
.
get
(
"DAY"
)));
right
=
new
Operation
(
NEGATE
,
right
,
null
);
right
=
new
Operation
(
NEGATE
,
right
,
null
);
right
=
right
.
optimize
(
session
);
right
=
right
.
optimize
(
session
);
f
.
setParameter
(
1
,
right
);
f
.
setParameter
(
2
,
left
);
f
.
doneWithParameters
();
return
f
.
optimize
(
session
);
}
else
if
(
l
==
Value
.
DATE
||
l
==
Value
.
TIMESTAMP
)
{
if
(
r
==
Value
.
TIME
)
{
dataType
=
Value
.
TIMESTAMP
;
return
this
;
}
else
if
(
r
==
Value
.
DATE
||
r
==
Value
.
TIMESTAMP
)
{
// Oracle date subtract
Function
f
=
Function
.
getFunction
(
session
.
getDatabase
(),
"DATEDIFF"
);
f
.
setParameter
(
0
,
ValueExpression
.
get
(
ValueString
.
get
(
"DAY"
)));
f
.
setParameter
(
1
,
right
);
f
.
setParameter
(
2
,
left
);
f
.
doneWithParameters
();
return
f
.
optimize
(
session
);
}
}
else
if
(
l
==
Value
.
TIME
&&
r
==
Value
.
TIME
)
{
dataType
=
Value
.
TIME
;
return
this
;
}
}
else
if
(
opType
==
MULTIPLY
)
{
if
(
l
==
Value
.
TIME
)
{
dataType
=
Value
.
TIME
;
convertRight
=
false
;
return
this
;
}
else
if
(
r
==
Value
.
TIME
)
{
swap
();
dataType
=
Value
.
TIME
;
convertRight
=
false
;
return
this
;
}
}
else
if
(
opType
==
DIVIDE
)
{
if
(
l
==
Value
.
TIME
)
{
dataType
=
Value
.
TIME
;
convertRight
=
false
;
return
this
;
}
}
f
.
setParameter
(
1
,
right
);
f
.
setParameter
(
2
,
left
);
f
.
doneWithParameters
();
return
f
.
optimize
(
session
);
}
else
if
(
opType
==
MINUS
&&
(
l
==
Value
.
DATE
||
l
==
Value
.
TIMESTAMP
))
{
// Oracle date subtract
Function
f
=
Function
.
getFunction
(
session
.
getDatabase
(),
"DATEDIFF"
);
f
.
setParameter
(
0
,
ValueExpression
.
get
(
ValueString
.
get
(
"DAY"
)));
f
.
setParameter
(
1
,
right
);
f
.
setParameter
(
2
,
left
);
f
.
doneWithParameters
();
return
f
.
optimize
(
session
);
}
}
throw
DbException
.
getUnsupportedException
(
DataType
.
getDataType
(
l
).
name
+
" "
+
getOperationToken
()
+
" "
+
DataType
.
getDataType
(
r
).
name
);
}
else
{
}
else
{
dataType
=
Value
.
getHigherOrder
(
l
,
r
);
dataType
=
Value
.
getHigherOrder
(
l
,
r
);
if
(
DataType
.
isStringType
(
dataType
)
&&
session
.
getDatabase
().
getMode
().
allowPlusForStringConcat
)
{
if
(
DataType
.
isStringType
(
dataType
)
&&
session
.
getDatabase
().
getMode
().
allowPlusForStringConcat
)
{
...
@@ -218,6 +283,12 @@ public class Operation extends Expression {
...
@@ -218,6 +283,12 @@ public class Operation extends Expression {
return
this
;
return
this
;
}
}
private
void
swap
()
{
Expression
temp
=
left
;
left
=
right
;
right
=
temp
;
}
public
void
setEvaluatable
(
TableFilter
tableFilter
,
boolean
b
)
{
public
void
setEvaluatable
(
TableFilter
tableFilter
,
boolean
b
)
{
left
.
setEvaluatable
(
tableFilter
,
b
);
left
.
setEvaluatable
(
tableFilter
,
b
);
if
(
right
!=
null
)
{
if
(
right
!=
null
)
{
...
...
h2/src/main/org/h2/value/ValueTime.java
浏览文件 @
4c241336
...
@@ -117,4 +117,28 @@ public class ValueTime extends Value {
...
@@ -117,4 +117,28 @@ public class ValueTime extends Value {
return
other
instanceof
ValueTime
&&
value
.
equals
(((
ValueTime
)
other
).
value
);
return
other
instanceof
ValueTime
&&
value
.
equals
(((
ValueTime
)
other
).
value
);
}
}
public
Value
add
(
Value
v
)
{
Time
t
=
new
Time
(
value
.
getTime
()
+
v
.
getTime
().
getTime
());
return
ValueTime
.
get
(
t
);
}
public
Value
subtract
(
Value
v
)
{
Time
t
=
new
Time
(
value
.
getTime
()
-
v
.
getTime
().
getTime
());
return
ValueTime
.
get
(
t
);
}
public
Value
multiply
(
Value
v
)
{
long
zeroTime
=
ValueTime
.
get
(
new
Time
(
0
)).
getDate
().
getTime
();
long
t
=
value
.
getTime
()
-
zeroTime
;
t
=
(
long
)
(
t
*
v
.
getDouble
())
+
zeroTime
;
return
ValueTime
.
get
(
new
Time
(
t
));
}
public
Value
divide
(
Value
v
)
{
long
zeroTime
=
ValueTime
.
get
(
new
Time
(
0
)).
getDate
().
getTime
();
long
t
=
value
.
getTime
()
-
zeroTime
;
t
=
(
long
)
(
t
/
v
.
getDouble
())
+
zeroTime
;
return
ValueTime
.
get
(
new
Time
(
t
));
}
}
}
h2/src/main/org/h2/value/ValueTimestamp.java
浏览文件 @
4c241336
...
@@ -9,6 +9,7 @@ package org.h2.value;
...
@@ -9,6 +9,7 @@ package org.h2.value;
import
java.math.BigDecimal
;
import
java.math.BigDecimal
;
import
java.sql.PreparedStatement
;
import
java.sql.PreparedStatement
;
import
java.sql.SQLException
;
import
java.sql.SQLException
;
import
java.sql.Time
;
import
java.sql.Timestamp
;
import
java.sql.Timestamp
;
import
java.util.Calendar
;
import
java.util.Calendar
;
...
@@ -180,4 +181,18 @@ public class ValueTimestamp extends Value {
...
@@ -180,4 +181,18 @@ public class ValueTimestamp extends Value {
return
other
instanceof
ValueTimestamp
&&
value
.
equals
(((
ValueTimestamp
)
other
).
value
);
return
other
instanceof
ValueTimestamp
&&
value
.
equals
(((
ValueTimestamp
)
other
).
value
);
}
}
public
Value
add
(
Value
v
)
{
long
zeroTime
=
ValueTime
.
get
(
new
Time
(
0
)).
getDate
().
getTime
();
long
t
=
value
.
getTime
()
-
zeroTime
+
v
.
getTimestamp
().
getTime
();
Timestamp
ts
=
new
Timestamp
(
t
);
return
ValueTimestamp
.
get
(
ts
);
}
public
Value
subtract
(
Value
v
)
{
long
zeroTime
=
ValueTime
.
get
(
new
Time
(
0
)).
getDate
().
getTime
();
long
t
=
value
.
getTime
()
+
zeroTime
-
v
.
getTimestamp
().
getTime
();
Timestamp
ts
=
new
Timestamp
(
t
);
return
ValueTimestamp
.
get
(
ts
);
}
}
}
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