ReadDate problem for fields of POF enabled objects

Question

Hi,
We are facing this resetting of date variables of a POF enabled object to System Date any time when object is looked up from cache.
Here is the driver program that I use. Please help!!!
package com;
import java.util.ArrayList;
import java.util.Date;
import com.tangosol.net.CacheFactory;
import com.tangosol.net.NamedCache;
public class POFDates {
     public static void main(String[] args) {
//          create cache
          try {
               NamedCache testEntryCache = CacheFactory.getCache("TESTCACHE");
               Date myDate = new Date(System.currentTimeMillis());
               Date myDate1 = new Date(System.currentTimeMillis()+24*3600*1000);
               Date date1 =new Date(System.currentTimeMillis()+2*24*3600*1000);
               ArrayList potentialDates = new ArrayList();
               potentialDates.add(date1);
               Other other = new Other("FirstOther",myDate);
               Dates dates = new Dates("FirstMe",myDate,potentialDates,other);
               System.out.println("****Dates initialy set in cache***"+dates);
               testEntryCache.put("dates",dates);
               Dates retrivedDates = null;
               retrivedDates = (Dates) testEntryCache.get("dates");
               System.out.println("-----Dates retrieved first Time from Cache------"
                         + retrivedDates);
               for (int i = 0; i < 3; i++) {
                    Thread.sleep(3000);
                    retrivedDates = (Dates) testEntryCache.get("dates");
                    System.out.println("####Dates retrieved "+i+"th Time from Cache"
                              + retrivedDates);
          } catch (Exception e) {
               e.printStackTrace();
Output of the program is
****Dates initialy set in cache*** Dates.myDate = Wed Mar 31 22:40:58 CDT 2010<<< Dates.potentialDates = [Fri Apr 02 22:40:58 CDT 2010]<<< Dates.Other = Others' myDate:Wed Mar 31 22:40:58 CDT 2010<<<
-----Dates retrieved first Time from Cache------ Dates.myDate = Wed Mar 31 22:40:58 CDT 2010<<< Dates.potentialDates = [2010-04-02 22:40:58.473]<<< Dates.Other = Others' myDate:Wed Mar 31 22:40:58 CDT 2010<<<
2010-03-31 22:40:59.083/2.407 Oracle Coherence GE 3.5.2/463 <D5> (thread=TcpRingListener, member=2): TcpRing: connecting to member 1 using TcpSocket{State=STATE_OPEN, Socket=Socket[addr=/105.106.192.124,port=4347,localport=8089]}
####Dates retrieved 0th Time from Cache Dates.myDate = Wed Mar 31 22:41:01 CDT 2010<<< Dates.potentialDates = [2010-04-02 22:40:58.473]<<< Dates.Other = Others' myDate:Wed Mar 31 22:41:01 CDT 2010<<<
####Dates retrieved 1th Time from Cache Dates.myDate = Wed Mar 31 22:41:04 CDT 2010<<< Dates.potentialDates = [2010-04-02 22:40:58.473]<<< Dates.Other = Others' myDate:Wed Mar 31 22:41:04 CDT 2010<<<
####Dates retrieved 2th Time from Cache Dates.myDate = Wed Mar 31 22:41:07 CDT 2010<<< Dates.potentialDates = [2010-04-02 22:40:58.473]<<< Dates.Other = Others' myDate:Wed Mar 31 22:41:07 CDT 2010<<<
******************Dates Class is******************* Start
package com;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Date;
import java.util.Vector;
import com.tangosol.io.pof.PofReader;
import com.tangosol.io.pof.PofWriter;
import com.tangosol.io.pof.PortableObject;
public class Dates implements PortableObject {
     private String fname =null;
     private Date fmyDate=null;
     private ArrayList fpotentialDates=null;
     private Other otherWithDate=null;
     public Dates(String fname, Date fmyDate, ArrayList fpotentialDates, Other fothersDate) {
          super();
          this.fname = fname;
          this.fmyDate = fmyDate;
          this.fpotentialDates = fpotentialDates;
          this.otherWithDate = fothersDate;
     public Dates()
     public void readExternal(PofReader reader) throws IOException {
          fname = reader.readString(0);
          fmyDate = reader.readDate(1);
          fpotentialDates = (ArrayList<Date>)(reader.readCollection(2, new ArrayList<Date>()));
          otherWithDate = (Other)reader.readObject(3);
     public void writeExternal(PofWriter writer) throws IOException {
          writer.writeString(0, fname);
          writer.writeDate(1, fmyDate);
          writer.writeCollection(2, fpotentialDates);
          writer.writeObject(3, otherWithDate);
     * @return the myDate
     public Date getMyDate() {
          return fmyDate;
     * @param myDate the myDate to set
     public void setMyDate(Date myDate) {
          this.fmyDate = myDate;
     * @return the othersDate
     public Other getOthersDate() {
          return otherWithDate;
     * @param othersDate the othersDate to set
     public void setOthersDate(Other othersDate) {
          this.otherWithDate = othersDate;
     * @return the potentialDates
     public ArrayList getPotentialDates() {
          return fpotentialDates;
     * @param potentialDates the potentialDates to set
     public void setPotentialDates(ArrayList potentialDates) {
          this.fpotentialDates = potentialDates;
     public String toString()
          StringBuffer lBuffer = new StringBuffer();
     lBuffer.append(" Dates.myDate = "+fmyDate+"<<<");
     lBuffer.append(" Dates.potentialDates = "+fpotentialDates+"<<<");
     lBuffer.append(" Other = "+otherWithDate+"<<<");
     return lBuffer.toString();
     public int hashCode() {
          final int PRIME = 31;
          int result = 1;
          result = PRIME * result + ((fmyDate == null) ? 0 : fmyDate.hashCode());
          result = PRIME * result + ((fname == null) ? 0 : fname.hashCode());
          result = PRIME * result + ((otherWithDate == null) ? 0 : otherWithDate.hashCode());
          return result;
     public boolean equals(Object obj) {
          if (this == obj)
               return true;
          if (obj == null)
               return false;
          if (getClass() != obj.getClass())
               return false;
          final Dates other = (Dates) obj;
          if (fmyDate == null) {
               if (other.fmyDate != null)
                    return false;
          } else if (!fmyDate.equals(other.fmyDate))
               return false;
          if (fname == null) {
               if (other.fname != null)
                    return false;
          } else if (!fname.equals(other.fname))
               return false;
          if (otherWithDate == null) {
               if (other.otherWithDate != null)
                    return false;
          } else if (!otherWithDate.equals(other.otherWithDate))
               return false;
          return true;
******************Dates Class is******************* End
******************Other Class is******************* Start
package com;
import java.io.IOException;
import java.util.Date;
import com.tangosol.io.pof.PofReader;
import com.tangosol.io.pof.PofWriter;
import com.tangosol.io.pof.PortableObject;
public class Other implements PortableObject {
     private String fname =null;
     private Date fmyDate=null;
     public Other(String fname, Date fmyDate) {
          super();
          this.fname = fname;
          this.fmyDate = fmyDate;
     public Other()
     public Other(Date myDate) {
          super();
          this.fmyDate = myDate;
     public void readExternal(PofReader reader) throws IOException {
          fname = reader.readString(0);
          fmyDate = reader.readDate(1);
     public void writeExternal(PofWriter writer) throws IOException {
          writer.writeString(0, fname);
          writer.writeDate(1, fmyDate);
     public Date getMyDate() {
          return fmyDate;
     public void setMyDate(Date myDate) {
          this.fmyDate = myDate;
     public String toString()
          StringBuffer lBuffer = new StringBuffer();
          lBuffer.append("Others' myDate:"+fmyDate);
          return lBuffer.toString();
     public int hashCode() {
          final int PRIME = 31;
          int result = 1;
          result = PRIME * result + ((fmyDate == null) ? 0 : fmyDate.hashCode());
          result = PRIME * result + ((fname == null) ? 0 : fname.hashCode());
          return result;
     public boolean equals(Object obj) {
          if (this == obj)
               return true;
          if (obj == null)
               return false;
          if (getClass() != obj.getClass())
               return false;
          final Other other = (Other) obj;
          if (fmyDate == null) {
               if (other.fmyDate != null)
                    return false;
          } else if (!fmyDate.equals(other.fmyDate))
               return false;
          if (fname == null) {
               if (other.fname != null)
                    return false;
          } else if (!fname.equals(other.fname))
               return false;
          return true;
     public String getFname() {
          return fname;
     public void setFname(String fname) {
          this.fname = fname;
Thanks,
Tarun
Edited by: user1228154 on Mar 31, 2010 8:54 PM

Answer 1

Dave,
Thanks for your reply, I had put a work around by converting to long during read/write of dates to POF Stream.
Using ReadRawDate too , I will ultimately need to convert back to Java Date as caller's of the class consume Java Date.
Please advise if there are any pros/cons of using readLong Vs readRawDate.
Regards,
Tarun Jindal