Java.util.Date badly serialized to java.sql.Timestamp Coherence 3.5.2

Hi all,
I'm running into this odd behaviour.
I serialize java.util.Date objects to cache and when I read them back from cache, they appear to be java.sql.Timestamp types.
I've isolated a junit test for that.
Do you know why Coherence changes the type in the middle?
Regards
Harry.
import java.util.Date;
import org.junit.Assert;
import org.junit.Test;
import com.tangosol.io.Serializer;
import com.tangosol.io.pof.ConfigurablePofContext;
import com.tangosol.util.ExternalizableHelper;
public class DatePofSerialTest {
     @Test
     public void testCobdate() throws Exception {
          Date date=new Date();
          Serializer serial = new ConfigurablePofContext();//"coherence-pof-config.xml");
          Date date2=(Date)ExternalizableHelper.fromBinary(ExternalizableHelper.toBinary(date, serial), serial);
          System.out.println(serial +" -- Date to serailize ["+ date.getClass() + "]");
          System.out.println(serial +" -- Date from deserialize ["+ date2.getClass() + "]");
          Assert.assertEquals(date, date2);/* Of course this passes, as both refer to the same time (long)*/
{code}
This gives as output
{code:title=output |borderStyle=solid}
log4j:WARN No appenders could be found for logger (Coherence).
log4j:WARN Please initialize the log4j system properly.
com.tangosol.io.pof.ConfigurablePofContext {location=coherence-pof-config.xml} -- Date to serailize [class java.util.Date]
com.tangosol.io.pof.ConfigurablePofContext {location=coherence-pof-config.xml} -- Date from deserialize [class java.sql.Timestamp]
{code}

Hi Harry,
It looks like the same issue as ...
PofExtractor with java.util.Date results in ClassCastException
It was fixed in version 3.5.4.
Thanks

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What's wrong with java.util.Date type?

Hi!
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I've created my own dictionary with dateToSQL() method overridden.
Now it works fine. But it's a kind of strange. Oracle is used often and my
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"Alexey Maslov" <[email protected]> wrote in message
news:[email protected]...
Patric,
Thank you for response.
We're using Oracle 8.1.7 via OCI driver from Oracle 9.2.
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>
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news:[email protected]...
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Alexey Maslov wrote:
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But when I try to execute the statement above against the database
manually
everything works fine.
I'm absolutely desperate!
P.S. On 2.4.0 RC the operation invoking this database insert completes
fine.
"Alexey Maslov" wrote in message
news:[email protected]...
Hi!
When I try to persist object having field of type java.util.Date I
get
the
following SQL logged by Kodo with subsequent transaction rollback:
2002-11-14 15:03:35,099 INFO
[com.solarmetric.kodo.impl.jdbc.ee.ManagedConnecti
onFactoryImpl.supportcrm/kodo] INSERT INTOBILLY.TT_COMMENTS(COMMENT_TYPE,
TEXT,
CREATED_BY, ID, SUBJECT, CREATE_DATE, TT_MAIN_ID) VALUES (1, '1',
10,
>>>
279,
'1',
{ts '2002-11-14 15:03:35.059'}, 147)
When I change "{ts '2002-11-14 15:03:35.059'}" with
"TO_DATE('2002-11-14
15:03', 'YYYY-DD-MM HH24:MI')" in SQL editor
and execute it everything works fine.
What does "{ts '..'}" mean? Is it a SQL generation error?
Thank you in advance.
Best regards,
Alexey Maslov
Patrick Linskey [email protected]
SolarMetric Inc. http://www.solarmetric.com
Best regards,
Alexey Maslov

Java.sql.Date vs java.util.Date vs. java.util.Calendar

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I appreciate your help, but what I was hoping to accomplish was to have two constructors for my java.sql.Date subclass, one that took (int,int,int) and one that took ("yyyy-MM-dd"). From what I gather from your answers, you don't think it's possible. I would have to have a static instantiator method like:public static java.sql.Date createDate (int year, int month, int date) { ... } OR public static java.sql.Date createDate (String dateString) { ... }Is that correct?
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-G

How to change a date value from "java.util.Date" to "java.sql.Date"?

Hi all,
How to change a date value from "java.util.Date" to "java.sql.Date"?
I m still confusing what's the difference between them.....
thanks
Regards,
Kin

Thanks
but my sql statement can only accept the format (yyyy-MM-dd)
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Java.sql.Date and java.util.Date - class loaded first in the classpath

I had two jar files which has java.util.Date and java.sql.Date class file. i want to know whether which class is loaded first in the classpath...
I like to change the order of loading the class at runtime...
Is there is any way to change the order of loading of class...
I may have different version of jar files for example xerces,xercesImpl. some of the code uses xerces ,some of the code uses xercesImpl..i had common classes.
I like to load the class with the same name according to the order i need..
Can we do all these in Run time ?????

I had two jar files which has java.util.Date and
java.sql.Date class file. i want to know whether
which class is loaded first in the classpath...
I like to change the order of loading the class at
runtime...
Is there is any way to change the order of loading of
class...
I may have different version of jar files for example
xerces,xercesImpl. some of the code uses xerces ,some
of the code uses xercesImpl..i had common classes.
I like to load the class with the same name according
to the order i need..
Can we do all these in Run time ?????That is meaningless.
The classes you are referring to are part of the Java API. Third party jars have no impact on that. And you can't change to the order because java.sql.Data is derived from java.util.Date. So the second must load before the first.
And if you have two jar files with those classes in them (and not classes that use them) then you either should already know how to use them or you should stop trying to do whatever you are doing because it isn't going to work.

Cannot convert from java.util.Date to java.sql.Date

In the below code am trying to get the current date and 60 days prior date:
Date todayDate;
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<%@page
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Thanks.
Edited by: MiltonDetroja on May 22, 2009 11:03 AM

Shows up following error msg:
Type mismatch: cannot convert from java.util.Date to java.sql.Date
I don't think this exception is thrown from the portion of code you have shown. As clearly specified in exception message, you cannot cast an instance of java.util.Date to java.sql.Date. you will need to do something like this
java.util.Date today = new java.util.Date();
long t = today.getTime();
java.sql.Date dt = new java.sql.Date(t);

Java.util.Date and java.sql.Date

when i am trying to displaying date in my jsp page errors occurs saying that java.util.date and java.sql.date are matching..
i have some sql statements which i need to execute in the page.so i cant delete that import sql statement.
so what is the solution for this.
i want to display the date as 19th april 2003....in the jsp page.
thank u

You should use full names.
java.util.Date date;
java.sql.Date sdate;
..And it may be a good idea to delete one of the two "import" declaration of packages.

Convert java.sql.Date to java.util.Date

How do i convert a java.sql.Date to java.util.Date ?
SimpleDateFormat formatter = new SimpleDateFormat ("dd/MM/yy HH:mm");
Date received=myresultset.getDate(1);
String utildate = formatter.format(received);
<%=utildate%>
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14/03/04 00:00
Ideas ?

There is simple way to do this job...
java.util.Date utilDate = new java.util.Date();
java.sql.Data sqlDate = new java.sql.Date(utilDate.getTime())
Enjoy Coding ! ! ! ! !

(Again) java.util.Date vs java.sql.Date

Hi there,
(Again) Im trying to understand the EXACT difference between
java.util.Date vs java.sql.Date.
Googling, I can see that this is a very "popular" subject, but I still
cannot figure out it exactly.
Many writers claim that java.sql.Date only stores the DATE part (yyyy-
mm-dd) but not the TIME part (hh:MM:ss) of a Date/Time value, but that
I can easily disprove:
java.util.Date ud = new java.util.Date(); java.sql.Date sd = new java.sql.Date(ud.getTime()); System.out.println(DateFormatUtils. format(ud, "yyyy-MM-dd HH:mm:ss.SSS")); System.out.println(DateFormatUtils. format(sd, "yyyy-MM-dd HH:mm:ss.SSS"));
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And the official API documentation, really looks more confusing than
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Most importantly: WHY does JDBC need to distinguish between them?
And, here again: *"a java.sql.Date instance must be 'normalized' by*
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What does that mean exactly? Apparently, the constructor doesnt
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point with this type, java.sql.Date?
Very greatful, if you can help me clarify this, once and for all.
TIA,

And the official API documentation, really looks more confusing than helpful to me:The problem is that you need to understand SQL as well as Java for this to make sense. It's not the Java API's job to tell you how your SQL database works - there's a myriad of subtle differences even when the DB is compliant with the SQL spec.
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java.util.Date suffers from a number of deficiencies. java.util.Calendar was supposed to address them but didn't really succeed. The JodaTime library is rather better, but it's all a lot more complicated than you might expect - partly because time management really is a much harder problem than it appears at first glance - there are timezones, leap years, leap seconds, the difference between astronomical and atomic time, and so on and so forth.

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Hi,
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22/11/2006 16:34:59 org.jdesktop.dataset.provider.sql.SQLCommand getUpdateStatement
WARNING: Problem with update SQL statement null
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===========
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===========
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Even if I set myJDatepicker.getDate()
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java.sql.Date and java.sql.Timestamp inherit from java.util.Date. So converting from java.sql.Date or java.sql.Timestamp to java.util.Date is easy, you don't have to do anything.
To convert a java.util.Date to a java.sql.Timestamp, do something like this:
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Convert java.util.Timestamp to a formatted java.util.date

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Hi,
I am trying to convert a java.util.TimeStamp date
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I was trying to convert the TimeStamp using
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need
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A java.sql.Timestamp extends java.util.Date. So if you've a Timestamp, then you can use it as you would a java.util.Date. If you want a String, then as you say use SimpleDateFormat with the appropriate format string.
Good Luck
Lee

Cannot find symbl method update Date(int,java.util.Date)

I get following error
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* @version 1.00 2008/7/18
// Class GuestDataBean makes a database connection and supports
// inserting and retrieving data from the database.
package com.deitel.jhtp6.jsp.beans;
import java.sql.SQLException;
import javax.sql.rowset.CachedRowSet;
import java.util.ArrayList;
import com.sun.rowset.CachedRowSetImpl; // CachedRowSet implementation
import java.sql.*;
public class GuestDataBean
   private CachedRowSet rowSet;
   // construct TitlesBean object
   public GuestDataBean() throws Exception
      // load the MySQL driver
      Class.forName( "org.gjt.mm.mysql.Driver" );
      // specify properties of CachedRowSet
      rowSet = new CachedRowSetImpl();
      rowSet.setUrl( "jdbc:mysql://localhost:3306/virsarmedia" );
      rowSet.setUsername( "root" );
      rowSet.setPassword( "" );
       // obtain list of titles
      rowSet.setCommand(
         "SELECT firstName, lastName, email,date,message FROM guest" );
      rowSet.execute();
   } // end GuestDataBean constructor
   // return an ArrayList of GuestBeans
   public ArrayList< GuestBean > getGuestList() throws SQLException
      ArrayList< GuestBean > guestList = new ArrayList< GuestBean >();
      rowSet.beforeFirst(); // move cursor before the first row
      // get row data
      while ( rowSet.next() )
         GuestBean guest = new GuestBean();
         guest.setFirstName( rowSet.getString( 1 ) );
         guest.setLastName( rowSet.getString( 2 ) );
         guest.setEmail( rowSet.getString( 3 ) );
         guest.setDate( rowSet.getDate( 4 ) );
         guest.setMessage( rowSet.getString( 5 ) );
         guestList.add( guest );
      } // end while
      return guestList;
   } // end method getGuestList
   // insert a guest in guestbook database
   public void addGuest( GuestBean guest ) throws SQLException
      rowSet.moveToInsertRow(); // move cursor to the insert row
      // update the three columns of the insert row
      rowSet.updateString( 1, guest.getFirstName() );
      rowSet.updateString( 2, guest.getLastName() );
      rowSet.updateString( 3, guest.getEmail() );
      rowSet.updateDate( 4, guest.getDate() );
      rowSet.updateString( 5, guest.getMessage() );
      rowSet.insertRow(); // insert row to rowSet
      rowSet.moveToCurrentRow(); // move cursor to the current row
      rowSet.commit(); // propagate changes to database
   } // end method addGuest
} // end class GuestDataBean

This isn't a JSP question, it better belongs in the JavaProgramming, or JDBC forums.
But the problem is because the updateDate method uses a java.sql.Date object and you are giving it a java.util.Date object. You have to convert from java.util.Date to java.sql.Date. See: [the api for java.sql.Date|http://java.sun.com/javase/6/docs/api/java/sql/Date.html] .
Edited by: stevejluke on Jul 21, 2008 5:43 PM

Oracle Timestamp and java.util.date

Greetings,
【Enviroment】
oracle 10g Express
jdbc 10.2.0.1.0 thin driver
windows Xp professinal
【problem】
I fetched a value of timestamp.
And I faced An Error that "java.sql.SQLException: Cannot set lastup_dt: incompatible types."
We define data type of lastup_dt is timestamp on Oracle.
And We define the data type of lastup_dt of javaBean is java.util.date.
And Ocurr SQLException at result = rsh.handle(rs);
How Can I avoid it?
public Object query(Connection conn, String sql, Object[] params,
ResultSetHandler rsh) throws SQLException {
PreparedStatement stmt = null;
ResultSet rs = null;
Object result = null;
try {
stmt = this.prepareStatement(conn, sql);
this.fillStatement(stmt, params);
rs = this.wrap(stmt.executeQuery());
result = rsh.handle(rs);
} catch (SQLException e) {
this.rethrow(e, sql, params);
} finally {
try {
close(rs);
} finally {
close(stmt);
return result;
Any help I appreciate it.
Thank you.

As long as you have the long representation of the time you can create a new java.util.Date:
new java.util.Date(ts.getTime())

How to insert java.util.Date to Oracle by OraclePrepaidStatement

Hi all,
I am trying to insert the date data to oracle a lot. But all of them works wrong???
Here's a code:
package main;
import oracle.jdbc.driver.*;
import oracledb.OraCon;
import java.text.SimpleDateFormat;
public class inmain {
      * @param args
     public static void main(String[] args)
          OraCon conn = new OraCon();
          conn.alloc();
          String sql = "insert into test(c_Date, c_Float, c_Int, c_String) values (?,?,?,?)";
          java.text.SimpleDateFormat MMddyyyyHHmmss = new SimpleDateFormat("MM/dd/yyyy HH:mm:ss");
          try
               OraclePreparedStatement ps = (OraclePreparedStatement)conn.oraconnection.prepareStatement(sql);
               String date = "12/12/2006 17:33:01";
               java.util.Date ud = MMddyyyyHHmmss.parse(date);
               java.sql.Date dd = new java.sql.Date(ud.getTime());
               float ff = Integer.parseInt("1");
               ps.setDate(1, dd);
               ps.setFloat(2, ff);
               ps.setInt(3, 4);
               ps.setString(4, "This is test");
               ps.executeUpdate();
          catch(Exception e)
               e.printStackTrace();
}Then I select from the table.
select to_char(test.C_DATE, 'yyyy-MM-dd HH24:mi:ss')
from test
Its result is:
2006-12-12 00:00:00
I wanna to show 2006-12-12 17:33:01.
How?

Dear NiallMcG,
Thank you very much, It now works fine.
package main;
import oracle.jdbc.driver.*;
import oracledb.OraCon;
import java.sql.Timestamp;
import java.text.SimpleDateFormat;
public class inmain {
      * @param args
     public static void main(String[] args)
          OraCon conn = new OraCon();
          conn.alloc();
          String sql = "insert into test(c_Date, c_Float, c_Int, c_String) values (?,?,?,?)";
          java.text.SimpleDateFormat MMddyyyyHHmmss = new SimpleDateFormat("MM/dd/yyyy HH:mm:ss");
          try
               OraclePreparedStatement ps = (OraclePreparedStatement)conn.oraconnection.prepareStatement(sql);
               String date = "12/12/2006 17:33:01";
               java.util.Date ud = MMddyyyyHHmmss.parse(date);
               float ff = Integer.parseInt("1");
               Timestamp ts = new java.sql.Timestamp(ud.getTime());
               ps.setTimestamp(1,ts);
               ps.setFloat(2, ff);
               ps.setInt(3, 4);
               ps.setString(4, "This is test");
               ps.executeUpdate();
          catch(Exception e)
               e.printStackTrace();
          conn.release();
}

Java.util.Date badly serialized to java.sql.Timestamp Coherence 3.5.2

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