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h2database
Commits
16894c19
提交
16894c19
authored
3月 05, 2011
作者:
Thomas Mueller
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差异文件
Issue 291: Allow org.h2.value.Value as FUNCTION ALIAS params and return value.
上级
446add93
隐藏空白字符变更
内嵌
并排
正在显示
4 个修改的文件
包含
35 行增加
和
4 行删除
+35
-4
changelog.html
h2/src/docsrc/html/changelog.html
+2
-1
features.html
h2/src/docsrc/html/features.html
+2
-1
FunctionAlias.java
h2/src/main/org/h2/engine/FunctionAlias.java
+10
-2
TestFunctions.java
h2/src/test/org/h2/test/db/TestFunctions.java
+21
-0
没有找到文件。
h2/src/docsrc/html/changelog.html
浏览文件 @
16894c19
...
...
@@ -18,7 +18,8 @@ Change Log
<h1>
Change Log
</h1>
<h2>
Next Version (unreleased)
</h2>
<ul><li>
Issue 265: Linked tables: auto-reconnect if the backside connection is lost
<ul><li>
Issue 291: Allow org.h2.value.Value as FUNCTION ALIAS params and return value.
</li><li>
Issue 265: Linked tables: auto-reconnect if the backside connection is lost
(workaround for the MySQL problem that disconnects after 8 hours of inactivity).
</li><li>
Linked tables: the index conditions was sometimes not used when querying the remote database.
</li><li>
Issue 294: OSGi: the versions were missing in manifest package exports.
...
...
h2/src/docsrc/html/features.html
浏览文件 @
16894c19
...
...
@@ -1475,11 +1475,12 @@ to use <code>java.lang.Integer</code> instead.
</p>
<p>
SQL types are mapped to Java classes and vice-versa as in the JDBC API. For details, see
<a
href=
"datatypes.html"
>
Data Types
</a>
.
There are
two
special cases:
<code>
java.lang.Object
</code>
is mapped to
There are
a few
special cases:
<code>
java.lang.Object
</code>
is mapped to
<code>
OTHER
</code>
(a serialized object). Therefore,
<code>
java.lang.Object
</code>
can not be used
to match all SQL types (matching all SQL types is not supported). The second special case is
<code>
Object[]
</code>
:
arrays of any class are mapped to
<code>
ARRAY
</code>
.
Objects of type
<code>
org.h2.value.Value
</code>
(the internal value class) are passed through without conversion.
</p>
<h3>
Functions That Require a Connection
</h3>
...
...
h2/src/main/org/h2/engine/FunctionAlias.java
浏览文件 @
16894c19
...
...
@@ -349,8 +349,13 @@ public class FunctionAlias extends SchemaObjectBase {
}
int
type
=
DataType
.
getTypeFromClass
(
paramClass
);
Value
v
=
args
[
a
].
getValue
(
session
);
v
=
v
.
convertTo
(
type
);
Object
o
=
v
.
getObject
();
Object
o
;
if
(
Value
.
class
.
isAssignableFrom
(
paramClass
))
{
o
=
v
;
}
else
{
v
=
v
.
convertTo
(
type
);
o
=
v
.
getObject
();
}
if
(
o
==
null
)
{
if
(
paramClass
.
isPrimitive
())
{
if
(
columnList
)
{
...
...
@@ -401,6 +406,9 @@ public class FunctionAlias extends SchemaObjectBase {
}
catch
(
Exception
e
)
{
throw
DbException
.
convert
(
e
);
}
if
(
Value
.
class
.
isAssignableFrom
(
method
.
getReturnType
()))
{
return
(
Value
)
returnValue
;
}
Value
ret
=
DataType
.
convertToValue
(
session
,
returnValue
,
dataType
);
return
ret
.
convertTo
(
dataType
);
}
finally
{
...
...
h2/src/test/org/h2/test/db/TestFunctions.java
浏览文件 @
16894c19
...
...
@@ -29,6 +29,7 @@ import org.h2.test.TestBase;
import
org.h2.tools.SimpleResultSet
;
import
org.h2.util.IOUtils
;
import
org.h2.util.New
;
import
org.h2.value.Value
;
/**
* Tests for user defined functions and aggregates.
...
...
@@ -63,10 +64,30 @@ public class TestFunctions extends TestBase implements AggregateFunction {
testAggregate
();
testFunctions
();
testFileRead
();
testValue
();
deleteDb
(
"functions"
);
IOUtils
.
deleteRecursive
(
TEMP_DIR
,
true
);
}
private
void
testValue
()
throws
SQLException
{
Connection
conn
=
getConnection
(
"functions"
);
Statement
stat
=
conn
.
createStatement
();
ResultSet
rs
;
stat
.
execute
(
"create alias TO_CHAR for \""
+
getClass
().
getName
()
+
".toChar\""
);
rs
=
stat
.
executeQuery
(
"call TO_CHAR(TIMESTAMP '2001-02-03 04:05:06', 'format')"
);
rs
.
next
();
assertEquals
(
"2001-02-03 04:05:06.0"
,
rs
.
getString
(
1
));
stat
.
execute
(
"drop alias TO_CHAR"
);
conn
.
close
();
}
public
static
Value
toChar
(
Value
...
args
)
{
if
(
args
.
length
==
0
)
{
return
null
;
}
return
args
[
0
].
convertTo
(
Value
.
STRING
);
}
private
void
testDefaultConnection
()
throws
SQLException
{
Connection
conn
=
getConnection
(
"functions;DEFAULT_CONNECTION=TRUE"
);
Statement
stat
=
conn
.
createStatement
();
...
...
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