Re: Timestamp problems

Barry,
the problem is that hibernate does this mapping.
I have the data stored as date and wan't to get the Calendar type, this one
will mapped to timestamp.
For my understanding it should be no problem to convert a date to timestamp
and back. The date should always be the same, shouldn't it ?
Both represent a Calendar Date.

peter

Barry Lind wrote:
> Peter,
>
> I looked at the sample program you sent (thanks for the test program, it
> makes it much easier to understand). From what I can tell the driver is
> working correctly.
>
> The data type of the column datum that you create is 'date'. Since a
> 'date' does not store any time information the rest of the behavior you
> see is related to this fact.
>
> So why are you using setTimestamp/getTimestamp when the data type is
> date? You should be using setDate/getDate.
>
> If I either change the data type to 'timestamp' in your program, or use
> getDate/setDate with the 'date' data type everything works as I would
> expect.
>
> The fact that you are mixing dates and timestamps I think is causing
> your problems. However I believe the driver is functioning correctly
> givin what your code is actually doing.
>
> thanks,
> --Barry
>
> Peter Katzmann wrote:
>
>> Hello Attached is the example with the same error and here is a small
>> database log:
>> 2003-02-07 14:32:32 [17354] LOG: connection received:
>> host=192.168.2.11 port=33900
>> 2003-02-07 14:32:32 [17354] LOG: connection authorized:
>> user=postgres database=achievo
>> 2003-02-07 14:32:32 [17354] LOG: query: set datestyle to 'ISO';
>> select version(), case when pg_encoding_to_char(1) = 'SQL_ASCII' then
>> 'UNKNOWN' else getdatabaseencoding() end;
>> 2003-02-07 14:32:32 [17354] LOG: query: create temp table tmp (
>> datum date, idx int)
>> 2003-02-07 14:32:32 [17354] LOG: query: insert into tmp
>> Values('2003-02-07 13:32:31.668000000+00', 0)
>> 2003-02-07 14:32:32 [17354] LOG: query: insert into tmp
>> Values('2003-02-07 13:32:31.913000000+00', 1)
>> 2003-02-07 14:32:32 [17354] LOG: query: insert into tmp
>> Values('2003-02-07 13:32:31.916000000+00', 2)
>> 2003-02-07 14:32:32 [17354] LOG: query: insert into tmp
>> Values('2003-02-07 13:32:31.919000000+00', 3)
>> 2003-02-07 14:32:32 [17354] LOG: query: insert into tmp
>> Values('2003-02-07 13:32:31.921000000+00', 4)
>> 2003-02-07 14:32:32 [17354] LOG: query: insert into tmp
>> Values('2003-02-07 13:32:31.923000000+00', 5)
>> 2003-02-07 14:32:32 [17354] LOG: query: insert into tmp
>> Values('2003-02-07 13:32:31.926000000+00', 6)
>> 2003-02-07 14:32:32 [17354] LOG: query: insert into tmp
>> Values('2003-02-07 13:32:31.928000000+00', 7)
>> 2003-02-07 14:32:32 [17354] LOG: query: insert into tmp
>> Values('2003-02-07 13:32:31.939000000+00', 8)
>> 2003-02-07 14:32:32 [17354] LOG: query: insert into tmp
>> Values('2003-02-07 13:32:31.941000000+00', 9)
>> 2003-02-07 14:32:32 [17354] LOG: query: select * from tmp
>> 2003-02-07 14:32:32 [17354] LOG: query: update tmp set
>> datum='2003-02-06 23:00:00.000000000+00' where idx=0
>> 2003-02-07 14:32:32 [17354] LOG: query: update tmp set
>> datum='2003-02-06 23:00:00.000000000+00' where idx=1
>> 2003-02-07 14:32:32 [17354] LOG: query: update tmp set
>> datum='2003-02-06 23:00:00.000000000+00' where idx=2
>> 2003-02-07 14:32:32 [17354] LOG: query: update tmp set
>> datum='2003-02-06 23:00:00.000000000+00' where idx=3
>> 2003-02-07 14:32:32 [17354] LOG: query: update tmp set
>> datum='2003-02-06 23:00:00.000000000+00' where idx=4
>> 2003-02-07 14:32:32 [17354] LOG: query: update tmp set
>> datum='2003-02-06 23:00:00.000000000+00' where idx=5
>> 2003-02-07 14:32:32 [17354] LOG: query: update tmp set
>> datum='2003-02-06 23:00:00.000000000+00' where idx=6
>> 2003-02-07 14:32:32 [17354] LOG: query: update tmp set
>> datum='2003-02-06 23:00:00.000000000+00' where idx=7
>> 2003-02-07 14:32:32 [17354] LOG: query: update tmp set
>> datum='2003-02-06 23:00:00.000000000+00' where idx=8
>> 2003-02-07 14:32:32 [17354] LOG: query: update tmp set
>> datum='2003-02-06 23:00:00.000000000+00' where idx=9
>>
>>
>> Barry Lind wrote:
>>
>>> Peter,
>>>
>>> When you say you tried with the current version what do you mean?
>>> Specifically have you tried the latest 7.3 build from
>>> jdbc.postgresql.org? There were some recent bug fixes in this area
>>> that I think may fix your problem.
>>>
>>> If the current code still has this problem, can you submit a test
>>> case that we can compile and run that demonstrates the problem?
>>>
>>> thanks,
>>> --Barry
>>>
>>>
>>> Peter Katzmann wrote:
>>>
>>>> High,
>>>> i' currently working with hibernate. They represent Calendar types as
>>>> timestamps. During prepareStatement and setTimestamp the data
>>>> generated for
>>>> the query has a modified date. The date is something original:
>>>>
>>>>
>>>> insert into hours ( entrydate, activitydate, remark, time, userid,
>>>> checked,
>>>> phaseid, activityid, zkub, id ) values '2003-02-06
>>>> 11:11:29.338000000+00',
>>>> '2003-02-06 11:11:29.338000000+00', 'öfölsdajklö', 120, 'pk1057',
>>>> 'f', null,
>>>> null, null, 12747 )
>>>>
>>>>
>>>> And this will be aftter the data was read back, the checked flag
>>>> changed and
>>>> wrote back
>>>>
>>>> update hours set entrydate = '2003-02-05 23:00:00.000000000+00',
>>>> activitydate
>>>> = '2003-02-05 23:00:00.000000000+00', remark = 'öfölsdajklö', time =
>>>> 120,
>>>> userid = 'pk1057', checked = 't', phaseid = 5, activityid = 3, zkub
>>>> = ' '
>>>> where id = 12747
>>>>
>>>> First occured the problem with postgres 7.2 so i updated to a
>>>> current version,
>>>> but no go either.
>>>>
>>>>
>>>> peter
>>>>
>>>>
>>>>
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>>>> broadcast)---------------------------
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>>>>
>>>> http://www.postgresql.org/users-lounge/docs/faq.html
>>>>
>>>>
>>>
>>>
>>>
>>>
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>>
>>
>>
>> ------------------------------------------------------------------------
>>
>> /*
>> * TryOut.java
>> *
>> * Created on 7. Februar 2003, 13:36
>> */
>>
>> import java.sql.*;
>>
>>
>> /**
>> *
>> * @author root
>> */
>> public class TryOut {
>> private java.sql.Connection dbConnection = null;
>> /** Die URL zur Datenbank */
>> private String dbURL = null;
>> /** Der Datenbank-Banutzer */
>> private String dbUser = null;
>> /** Das Password des Datenbank-Benutzers */
>> private String dbPasswd = null;
>> /***********************
>> * simple table of the form
>> *
>> *
>> * /** Creates a new instance of TryOut */
>> public TryOut() {
>> }
>> /**
>> * @param args the command line arguments
>> */
>> public static void main(String[] args) {
>> TryOut tr = new TryOut();
>> tr.doIt();
>> }
>> private void doIt() {
>> try {
>> Class.forName("org.postgresql.Driver");
>>
>> dbConnect("jdbc:postgresql://kontor.thiesen.de:5432/achievo?charSet=ISO-8859-15",
>> "postgres", "postgres");
>> Statement state = dbConnection.createStatement();
>> state.execute("create temp table tmp ( datum date, idx int)");
>> PreparedStatement st1 = dbConnection.prepareStatement("insert
>> into tmp Values(?, ?)");
>> PreparedStatement st2 = dbConnection.prepareStatement("update
>> tmp set datum=? where idx=?");
>> for (int i = 0; i < 10; i++) {
>> st1.setInt(2, i);
>> st1.setTimestamp(1,new Timestamp(new
>> java.util.Date().getTime()));
>> st1.execute();
>> }
>> ResultSet rs = state.executeQuery("select * from tmp");
>> for (int i = 0; i < 10; i++) {
>> rs.absolute(i+1);
>> st2.setTimestamp(1, new Timestamp(rs.getDate(1).getTime()));
>> st2.setInt(2, i);
>> st2.execute();
>> }
>> dbConnection.close();
>> } catch (Exception e) {
>> e.printStackTrace();
>> }
>> }
>> /* Oeffnet die Datenbankverbindung
>> *
>> * @param dbUrl die JDBC-RessourcenURL
>> * @param dbUser dbUser
>> * @param dbPasswd
>> *
>> * @exception SQLException noch Fragen?
>> */
>> public void dbConnect(String dbURL, String dbUsr, String dbPwd) {
>> this.dbURL = dbURL;
>> this.dbUser = dbUsr;
>> this.dbPasswd = dbPwd;
>> dbConnect();
>> }
>> /**
>> * Oeffnet die Datenbankverbindung
>> *
>> * @param dbUrl die JDBC-RessourcenURL
>> * @param dbUser dbUser
>> * @param dbPasswd
>> *
>> * @exception SQLException noch Fragen?
>> */
>> private void dbConnect() {
>> /* Verbindung zur Datenbank aufbauen */
>> // getMainSession().getDebug().message(this,
>> "DriverManager.getConnection() "+dbURL+" "+dbUser+" ********");
>> System.out.println( "DriverManager.getConnection() "+dbURL+"
>> "+dbUser+" ********");
>> try {
>> this.dbConnection = DriverManager.getConnection(dbURL, dbUser,
>> dbPasswd);
>> } catch (SQLException se) {
>> se.printStackTrace();
>> }
>> try {
>> DatabaseMetaData dmd = dbConnection.getMetaData();
>> String dbi = new String();
>> dbi = dbi.concat("--- database:
>> "+dmd.getDatabaseProductName()+"\n");
>> dbi = dbi.concat("--- databse version:
>> "+dmd.getDatabaseProductVersion()+"\n");
>> dbi = dbi.concat("--- JDBC driver name:
>> "+dmd.getDriverName()+"\n");
>> dbi = dbi.concat("--- JDBC driver version:
>> "+dmd.getDriverVersion());
>> //getMainSession().getDebug().message(this, "Database
>> Info:\n"+dbi);
>> System.out.println( "Database Info:\n"+dbi);
>> } catch (SQLException se) {
>> se.printStackTrace();
>> }
>> }
>> }
>
>
>
>
>
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--
Thiesen hardware & software GmbH | P. Katzmann
Bereichsleiter SW Entwicklung | p(dot)katzmann(at)thiesen(dot)com
Im Tiegel 9 | www.thiesen.com
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