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Administrator
h2database
Commits
0e597e68
提交
0e597e68
authored
11月 30, 2009
作者:
Thomas Mueller
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差异文件
Trigger that are called before a select statement are now supported.
上级
eab40a6c
显示空白字符变更
内嵌
并排
正在显示
6 个修改的文件
包含
44 行增加
和
11 行删除
+44
-11
Trigger.java
h2/src/main/org/h2/api/Trigger.java
+5
-0
Parser.java
h2/src/main/org/h2/command/Parser.java
+2
-0
Query.java
h2/src/main/org/h2/command/dml/Query.java
+6
-0
Select.java
h2/src/main/org/h2/command/dml/Select.java
+7
-0
SelectUnion.java
h2/src/main/org/h2/command/dml/SelectUnion.java
+5
-0
TriggerObject.java
h2/src/main/org/h2/schema/TriggerObject.java
+19
-11
没有找到文件。
h2/src/main/org/h2/api/Trigger.java
浏览文件 @
0e597e68
...
...
@@ -29,6 +29,11 @@ public interface Trigger {
*/
int
DELETE
=
4
;
/**
* The trigger is called for SELECT statements.
*/
int
SELECT
=
8
;
/**
* This method is called by the database engine once when initializing the
* trigger.
...
...
h2/src/main/org/h2/command/Parser.java
浏览文件 @
0e597e68
...
...
@@ -3707,6 +3707,8 @@ public class Parser {
typeMask
|=
Trigger
.
UPDATE
;
}
else
if
(
readIf
(
"DELETE"
))
{
typeMask
|=
Trigger
.
DELETE
;
}
else
if
(
readIf
(
"SELECT"
))
{
typeMask
|=
Trigger
.
SELECT
;
}
else
{
throw
getSyntaxError
();
}
...
...
h2/src/main/org/h2/command/dml/Query.java
浏览文件 @
0e597e68
...
...
@@ -177,6 +177,11 @@ public abstract class Query extends Prepared {
*/
public
abstract
void
updateAggregate
(
Session
s
)
throws
SQLException
;
/**
* Call the before triggers on all tables.
*/
public
abstract
void
fireBeforeSelectTriggers
()
throws
SQLException
;
public
boolean
isQuery
()
{
return
true
;
}
...
...
@@ -216,6 +221,7 @@ public abstract class Query extends Prepared {
}
public
ResultInterface
query
(
int
limit
)
throws
SQLException
{
fireBeforeSelectTriggers
();
if
(!
session
.
getDatabase
().
getOptimizeReuseResults
())
{
return
queryWithoutCache
(
limit
);
}
...
...
h2/src/main/org/h2/command/dml/Select.java
浏览文件 @
0e597e68
...
...
@@ -10,6 +10,7 @@ import java.sql.SQLException;
import
java.util.Arrays
;
import
java.util.HashMap
;
import
java.util.HashSet
;
import
org.h2.api.Trigger
;
import
org.h2.constant.ErrorCode
;
import
org.h2.constant.SysProperties
;
import
org.h2.engine.Constants
;
...
...
@@ -791,6 +792,12 @@ public class Select extends Query {
return
set
;
}
public
void
fireBeforeSelectTriggers
()
throws
SQLException
{
for
(
TableFilter
filter
:
filters
)
{
filter
.
getTable
().
fire
(
session
,
Trigger
.
SELECT
,
true
);
}
}
private
double
preparePlan
()
throws
SQLException
{
TableFilter
[]
topArray
=
topFilters
.
toArray
(
new
TableFilter
[
topFilters
.
size
()]);
for
(
TableFilter
t
:
topArray
)
{
...
...
h2/src/main/org/h2/command/dml/SelectUnion.java
浏览文件 @
0e597e68
...
...
@@ -353,4 +353,9 @@ public class SelectUnion extends Query {
return
null
;
}
public
void
fireBeforeSelectTriggers
()
throws
SQLException
{
left
.
fireBeforeSelectTriggers
();
right
.
fireBeforeSelectTriggers
();
}
}
h2/src/main/org/h2/schema/TriggerObject.java
浏览文件 @
0e597e68
...
...
@@ -20,6 +20,7 @@ import org.h2.message.Trace;
import
org.h2.result.Row
;
import
org.h2.table.Table
;
import
org.h2.util.ClassUtils
;
import
org.h2.util.StatementBuilder
;
import
org.h2.value.DataType
;
import
org.h2.value.Value
;
...
...
@@ -96,15 +97,19 @@ public class TriggerObject extends SchemaObjectBase {
* or after any rows have been processed, once for each statement.
*
* @param session the session
* @param type the trigger type
* @param beforeAction if this method is called before applying the changes
*/
public
void
fire
(
Session
session
,
boolean
beforeAction
)
throws
SQLException
{
if
(
rowBased
||
before
!=
beforeAction
)
{
public
void
fire
(
Session
session
,
int
type
,
boolean
beforeAction
)
throws
SQLException
{
if
(
rowBased
||
before
!=
beforeAction
||
(
typeMask
&
type
)
==
0
)
{
return
;
}
load
(
session
);
Connection
c2
=
session
.
createConnection
(
false
);
boolean
old
=
session
.
setCommitOrRollbackDisabled
(
true
);
boolean
old
=
false
;
if
(
type
!=
Trigger
.
SELECT
)
{
old
=
session
.
setCommitOrRollbackDisabled
(
true
);
}
Value
identity
=
session
.
getScopeIdentity
();
try
{
triggerCallback
.
fire
(
c2
,
null
,
null
);
...
...
@@ -113,9 +118,11 @@ public class TriggerObject extends SchemaObjectBase {
triggerClassName
,
e
.
toString
());
}
finally
{
session
.
setScopeIdentity
(
identity
);
if
(
type
!=
Trigger
.
SELECT
)
{
session
.
setCommitOrRollbackDisabled
(
old
);
}
}
}
private
Object
[]
convertToObjectList
(
Row
row
)
{
if
(
row
==
null
)
{
...
...
@@ -256,22 +263,23 @@ public class TriggerObject extends SchemaObjectBase {
}
public
String
getTypeNameList
()
{
St
ringBuilder
buff
=
new
String
Builder
();
St
atementBuilder
buff
=
new
Statement
Builder
();
if
((
typeMask
&
Trigger
.
INSERT
)
!=
0
)
{
buff
.
appendExceptFirst
(
", "
);
buff
.
append
(
"INSERT"
);
}
if
((
typeMask
&
Trigger
.
UPDATE
)
!=
0
)
{
if
(
buff
.
length
()
>
0
)
{
buff
.
append
(
", "
);
}
buff
.
appendExceptFirst
(
", "
);
buff
.
append
(
"UPDATE"
);
}
if
((
typeMask
&
Trigger
.
DELETE
)
!=
0
)
{
if
(
buff
.
length
()
>
0
)
{
buff
.
append
(
", "
);
}
buff
.
appendExceptFirst
(
", "
);
buff
.
append
(
"DELETE"
);
}
if
((
typeMask
&
Trigger
.
SELECT
)
!=
0
)
{
buff
.
appendExceptFirst
(
", "
);
buff
.
append
(
"SELECT"
);
}
return
buff
.
toString
();
}
...
...
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