I will get to it sometime within the next week. Have some higher priority
items to address first
Best
Lance
On Dec 3, 2012, at 3:17 AM, Frank Ding wrote:
> Hi Lance,
> Thanks for your clarification. I created the test case you requested and
> attached it in this email. Please review it. By the way, the new Oracle bug
> (internal id 2376620) submitted by me several days ago seems not having been
> reviewed. Could you also help me on this?
>
> Best regards,
> Frank
>
>
> On 11/30/2012 8:40 PM, Lance Andersen - Oracle wrote:
>> Hi Frank,
>>
>> Thank you for the email. No we do not want tests that require database
>> access in jtreg.
>>
>> What I was trying to say, albeit not probably as clear as it could have been
>> is that it would be helpful to provide a complete example and to use Java DB
>> as the database if it is a generic data access issue as while it is not a
>> required part of the Java SE specification, we do provide it with the Oracle
>> JDK so it makes it easier to test against for developers vs finding an
>> instance of DB2, Sybase or even Oracle to test against.
>>
>> Best
>> Lance
>> On Nov 30, 2012, at 12:26 AM, Frank Ding wrote:
>>
>>> Hi Lance,
>>> Sorry for late response and thanks for your comment. You mean I can write
>>> a jtreg test case that connects to Java DB? I can do that.
>>>
>>> Best regards,
>>> Frank
>>>
>>> On 11/13/2012 10:13 PM, Lance Andersen - Oracle wrote:
>>>> Hi Frank,
>>>>
>>>>
>>>> Thank you for the note
>>>> If you could in the future, please provide a complete test program to
>>>> repro the issue as it would save time with the reviews. Ideally if the
>>>> issue is not database specific it would be good to leverage Java DB as it
>>>> is included within Oracle JDK
>>>>
>>>> I will look at this sometime this week
>>>>
>>>> Best
>>>> Lance
>>>> On Nov 12, 2012, at 9:25 PM, Frank Ding wrote:
>>>>
>>>>> Hi Lance
>>>>> Thanks for your quick response. Please find the bug info below.
>>>>>
>>>>> The problem:
>>>>> When CachedRowSetImpl.acceptChanges() is called, incorrect number of
>>>>> conflicts, if any, is reported. The number of conflicts is the actual
>>>>> number of existing rows in database, which is the size of variable
>>>>> 'status' defined in CachedRowSetWriter.writeData(). It's not the
>>>>> conflict number that is supposed to be.
>>>>>
>>>>> Test case:
>>>>> The bug can be easily manifested in all SQL server environment. Here
>>>>> take PostgreSQL for example.
>>>>> 1. The sql script to create a table
>>>>> CREATE TABLE ressystem.roomdescription
>>>>> (
>>>>> roomdescription_id serial NOT NULL,
>>>>> roomdescription character varying NOT NULL,
>>>>> CONSTRAINT roomdescription_pkey PRIMARY KEY (roomdescription_id)
>>>>> )
>>>>>
>>>>> 2. Manually insert 3 rows
>>>>> (1, "Test 1")
>>>>> (2, "Test 2")
>>>>> (3, "Test 3")
>>>>>
>>>>> 3. Create a Java class that connects the established database and then
>>>>> execute the following code snippet.
>>>>> String query = "select roomdescription_id, roomdescription from
>>>>> ressystem.roomdescription";
>>>>> Object[] values = {2, "Test2"};
>>>>> rs.setCommand(query);
>>>>> rs.execute(conn);
>>>>> rs.moveToInsertRow();
>>>>> for(int i=0; i<values.length; i++) {
>>>>> rs.updateObject(i+1,values[i]);
>>>>> }
>>>>> rs.insertRow();
>>>>> rs.moveToCurrentRow();
>>>>> rs.acceptChanges(conn);
>>>>>
>>>>> 4. An exception occurs with following output.
>>>>> javax.sql.rowset.spi.SyncProviderException: 4conflicts while synchronizing
>>>>> at
>>>>> com.sun.rowset.internal.CachedRowSetWriter.writeData(CachedRowSetWriter.java:412)
>>>>> at
>>>>> com.sun.rowset.CachedRowSetImpl.acceptChanges(CachedRowSetImpl.java:880)
>>>>>
>>>>> 5. In fact, there is only one conflicting row but 4 were reported.
>>>>>
>>>>> Best regards,
>>>>> Frank
>>>>>
>>>>> On 11/9/2012 7:41 PM, Lance Andersen - Oracle wrote:
>>>>>> Frank,
>>>>>>
>>>>>> If you can please post the bug info here, I will take a look at your
>>>>>> patch
>>>>>>
>>>>>> Best
>>>>>> Lance
>>>>>> On Nov 8, 2012, at 10:01 PM, Frank Ding wrote:
>>>>>>
>>>>>>> Hi guys,
>>>>>>> We discovered a bug in CachedRowSetWriter.writeData method where
>>>>>>> incorrect number of conflicts is reported. I searched in Oracle bug
>>>>>>> database and no similar record was found. So I submitted a new one
>>>>>>> whose internal review ID is 2376620. A test case with code is
>>>>>>> illustrated in the bug submission that leverages PostgreSQL server but
>>>>>>> the issue is platform independent and easy to reproduce.
>>>>>>> I provided a patch review, available @
>>>>>>> http://cr.openjdk.java.net/~dingxmin/2376620/webrev.01/
>>>>>>> Is there anybody who is interested in patch and can also review bug
>>>>>>> 2376620? Your reply is appreciated.
>>>>>>>
>>>>>>> Best regards,
>>>>>>> Frank
>>>>>>>
>>>>>>>
>>>>>> Lance Andersen| Principal Member of Technical Staff | +1.781.442.2037
>>>>>> Oracle Java Engineering
>>>>>> 1 Network Drive
>>>>>> Burlington, MA 01803
>>>>>> [email protected]
>>>>>>
>>>>
>>>> Lance Andersen| Principal Member of Technical Staff | +1.781.442.2037
>>>> Oracle Java Engineering
>>>> 1 Network Drive
>>>> Burlington, MA 01803
>>>> [email protected]
>>>>
>>
>>
>> Lance Andersen| Principal Member of Technical Staff | +1.781.442.2037
>> Oracle Java Engineering
>> 1 Network Drive
>> Burlington, MA 01803
>> [email protected]
>>
>
/*
* Copyright (c) 2012 Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* Portions Copyright (c) 2012 IBM Corporation
*/
import com.sun.rowset.CachedRowSetImpl;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import javax.sql.rowset.CachedRowSet;
public class DerbyTest {
private static String DERBY_DB_FILE = "derbydb";
private static Connection getConnection() throws Exception {
String driver = "org.apache.derby.jdbc.EmbeddedDriver";
String url = "jdbc:derby:" + DERBY_DB_FILE + ";create=true";
Connection conn;
try {
Class.forName(driver);
conn = DriverManager.getConnection(url);
} catch (Exception e) {
throw e;
}
return conn;
}
private static void createTable(Connection conn) throws SQLException {
Statement statement = conn.createStatement();
try {
statement.execute("DROP TABLE mytable");
} catch (SQLException ex) {
// ignore exception when mytable doesn't exist
}
String createTableSQL = "CREATE TABLE mytable"
+ "(id INT NOT NULL PRIMARY KEY,"
+ "description VARCHAR(30) NOT NULL)";
statement.executeUpdate(createTableSQL);
statement.close();
}
private static void prepareData(Connection conn) throws SQLException {
Statement statement = conn.createStatement();
String insertTableData = "INSERT INTO mytable(id,description)"
+ "VALUES(1, 'r1')";
statement.executeUpdate(insertTableData);
insertTableData = "INSERT INTO mytable(id,description)"
+ "VALUES(2, 'r2')";
statement.executeUpdate(insertTableData);
statement.close();
}
private static void createConflict(Connection conn) throws SQLException {
CachedRowSet rs = new CachedRowSetImpl();
rs.setReadOnly(false);
String querySql = "SELECT id, description FROM mytable";
rs.setCommand(querySql);
rs.execute(conn);
rs.moveToInsertRow();
rs.updateObject(1, 2);
rs.updateObject(2, "new str");
rs.insertRow();
rs.moveToCurrentRow();
rs.acceptChanges(conn);
}
public static void main(String[] args) throws Exception {
Connection conn = getConnection();
createTable(conn);
prepareData(conn);
try {
createConflict(conn);
} catch (SQLException ex) {
String errMsg = ex.getMessage();
if (!errMsg.startsWith("1")) {
System.out.println("The conflict number should be 1 but now " +
"it is " + errMsg);
throw ex;
}
}
conn.close();
}
}
>
Lance Andersen| Principal Member of Technical Staff | +1.781.442.2037
Oracle Java Engineering
1 Network Drive
Burlington, MA 01803
[email protected]
