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h2database
Commits
c9e8941a
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c9e8941a
authored
1月 30, 2012
作者:
Thomas Mueller
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差异文件
TriggerAdapter: in "before" triggers, values can be changed using the ResultSet.updateX methods.
上级
c34aff38
显示空白字符变更
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正在显示
3 个修改的文件
包含
80 行增加
和
6 行删除
+80
-6
changelog.html
h2/src/docsrc/html/changelog.html
+8
-1
TriggerAdapter.java
h2/src/main/org/h2/tools/TriggerAdapter.java
+38
-1
TestTriggersConstraints.java
h2/src/test/org/h2/test/db/TestTriggersConstraints.java
+34
-4
没有找到文件。
h2/src/docsrc/html/changelog.html
浏览文件 @
c9e8941a
...
...
@@ -18,7 +18,14 @@ Change Log
<h1>
Change Log
</h1>
<h2>
Next Version (unreleased)
</h2>
<ul><li>
The script created by SCRIPT DROP did not always work if multiple views
<ul><li>
TriggerAdapter: in "before" triggers, values can be changed using the ResultSet.updateX methods.
</li><li>
Creating a table with column data type NULL now works (even if not very useful).
</li><li>
ALTER TABLE ALTER COLUMN no longer copies the data for widening conversions
(for example if only the precision was increased) unless necessary.
</li><li>
Multi-threaded kernel: concurrently running an online backup
and updating the database resulted in a broken (transactionally incorrect)
backup file in some cases.
</li><li>
The script created by SCRIPT DROP did not always work if multiple views
existed that depend on each other.
</li><li>
MathUtils.getSecureRandom could log a warning to System.err in case
the /dev/random is very slow, and the System.getProperties().toString()
...
...
h2/src/main/org/h2/tools/TriggerAdapter.java
浏览文件 @
c9e8941a
...
...
@@ -17,6 +17,33 @@ import org.h2.api.Trigger;
*/
public
abstract
class
TriggerAdapter
implements
Trigger
{
/**
* The schema name.
*/
protected
String
schemaName
;
/**
* The name of the trigger.
*/
protected
String
triggerName
;
/**
* The name of the table.
*/
protected
String
tableName
;
/**
* Whether the fire method is called before or after the operation is
* performed.
*/
protected
boolean
before
;
/**
* The trigger type: INSERT, UPDATE, DELETE, SELECT, or a combination (a bit
* field).
*/
protected
int
type
;
private
SimpleResultSet
oldResultSet
,
newResultSet
;
private
TriggerRowSource
oldSource
,
newSource
;
...
...
@@ -33,7 +60,8 @@ public abstract class TriggerAdapter implements Trigger {
* @param tableName the name of the table
* @param before whether the fire method is called before or after the
* operation is performed
* @param type the operation type: INSERT, UPDATE, or DELETE
* @param type the operation type: INSERT, UPDATE, DELETE, SELECT, or a
* combination (this parameter is a bit field)
*/
public
void
init
(
Connection
conn
,
String
schemaName
,
String
triggerName
,
String
tableName
,
...
...
@@ -52,6 +80,11 @@ public abstract class TriggerAdapter implements Trigger {
oldResultSet
.
addColumn
(
column
,
dataType
,
precision
,
scale
);
newResultSet
.
addColumn
(
column
,
dataType
,
precision
,
scale
);
}
this
.
schemaName
=
schemaName
;
this
.
triggerName
=
triggerName
;
this
.
tableName
=
tableName
;
this
.
before
=
before
;
this
.
type
=
type
;
}
/**
...
...
@@ -112,6 +145,10 @@ public abstract class TriggerAdapter implements Trigger {
* fire(Connection conn, Object[] oldRow, Object[] newRow) method.
* ResultSet.next does not need to be called (and calling it has no effect;
* it will always return true).
* <p>
* For "before" triggers, the new values of the new row may be changed
* using the ResultSet.updateX methods.
* </p>
*
* @param conn a connection to the database
* @param oldRow the old row, or null if no old row is available (for
...
...
h2/src/test/org/h2/test/db/TestTriggersConstraints.java
浏览文件 @
c9e8941a
...
...
@@ -121,19 +121,25 @@ public class TestTriggersConstraints extends TestBase implements Trigger {
stat
.
execute
(
"drop table if exists test"
);
stat
.
execute
(
"create table test(id int)"
);
stat
.
execute
(
"create table message(name varchar)"
);
stat
.
execute
(
"create trigger test_insert
after
insert, update, delete on test "
+
stat
.
execute
(
"create trigger test_insert
before
insert, update, delete on test "
+
"for each row call \""
+
TestTriggerAdapter
.
class
.
getName
()
+
"\""
);
stat
.
execute
(
"insert into test values(1)"
);
ResultSet
rs
;
rs
=
stat
.
executeQuery
(
"select * from test"
);
rs
.
next
();
assertEquals
(
10
,
rs
.
getInt
(
1
));
stat
.
execute
(
"update test set id = 2"
);
rs
=
stat
.
executeQuery
(
"select * from test"
);
rs
.
next
();
assertEquals
(
20
,
rs
.
getInt
(
1
));
stat
.
execute
(
"delete from test"
);
ResultSet
rs
;
rs
=
stat
.
executeQuery
(
"select * from message"
);
assertTrue
(
rs
.
next
());
assertEquals
(
"+1;"
,
rs
.
getString
(
1
));
assertTrue
(
rs
.
next
());
assertEquals
(
"-1;+2;"
,
rs
.
getString
(
1
));
assertEquals
(
"-1
0
;+2;"
,
rs
.
getString
(
1
));
assertTrue
(
rs
.
next
());
assertEquals
(
"-2;"
,
rs
.
getString
(
1
));
assertEquals
(
"-2
0
;"
,
rs
.
getString
(
1
));
assertFalse
(
rs
.
next
());
stat
.
execute
(
"drop table test, message"
);
conn
.
close
();
...
...
@@ -182,6 +188,30 @@ public class TestTriggersConstraints extends TestBase implements Trigger {
if
(
newRow
!=
null
)
{
buff
.
append
(
"+"
).
append
(
newRow
.
getString
(
"id"
)).
append
(
';'
);
}
if
(!
"TEST_INSERT"
.
equals
(
triggerName
))
{
throw
new
RuntimeException
(
"Wrong trigger name: "
+
triggerName
);
}
if
(!
"TEST"
.
equals
(
tableName
))
{
throw
new
RuntimeException
(
"Wrong table name: "
+
tableName
);
}
if
(!
"PUBLIC"
.
equals
(
schemaName
))
{
throw
new
RuntimeException
(
"Wrong schema name: "
+
schemaName
);
}
if
(
type
!=
(
Trigger
.
INSERT
|
Trigger
.
UPDATE
|
Trigger
.
DELETE
))
{
throw
new
RuntimeException
(
"Wrong type: "
+
type
);
}
if
(
newRow
!=
null
)
{
if
(
oldRow
==
null
)
{
if
(
newRow
.
getInt
(
1
)
!=
1
)
{
throw
new
RuntimeException
(
"Expected: 1 got: "
+
newRow
.
getString
(
1
));
}
}
else
{
if
(
newRow
.
getInt
(
1
)
!=
2
)
{
throw
new
RuntimeException
(
"Expected: 2 got: "
+
newRow
.
getString
(
1
));
}
}
newRow
.
updateInt
(
1
,
newRow
.
getInt
(
1
)
*
10
);
}
conn
.
createStatement
().
execute
(
"insert into message values('"
+
buff
.
toString
()
+
"')"
);
}
...
...
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