Record store problem

[harshalpatil]

Hi..
Can anybody plz help me...
I have created an aplication..
For that i want save data on the data store..
I can see it on the emulator as well as on handset..
Bt when i restart the application, i can not see my data..
what will be the problem..
where data has been saved on handset...
How to get the path.. if anybody has any idea please tell me..
Thank You..

[sreekanthbellur]

are you calling the RecordStore.closeRecordStore() after adding the records to the recordstore (by calling addRecord)?

[nicenouman]

u dont need path to open record store all u need is the name of the record store. open ur record store like this and ur data will be there of course if u have stored it correctly. hereis a sample

RecordStore rs= RecordStore.openRecordStore("Your Record Store", true);
RecordEnumeration enumRecs = rs.enumerateRecords(null, null, false);

if(enumRecs.hasNextElement())
{
int recordStoreId = enumRecs.nextRecordId();
try
{
byte[] data = rs.getRecord(recordStoreId);
DataInputStream dis = new DataInputStream(new ByteArrayInputStream(data));

Name = dis.readUTF();
Address = dis.readUTF();
Gender = dis.readUTF();

} //end of try

catch(Exception e)
{
rs.closeRecordStore();
}// end of catch
}// end of if

rs.closeRecordStore();
}

[adilb]

Hi Harshal
It would be easy to figure out if u could post in your code and also would like to to know the device you are talking about.

Mean while u could check for--
1>what happens if u relaunch the app on emulator even if its not visible there then somethings wrong with the code else if it is visible then its an device issue
2>make sure before quitting your app that the recordstore was actually written
3>check for exceptions thrown while writting to recordstore.
4>As suggested above make sure u are closing the recordstore.

[harshalpatil]

are you calling the RecordStore.closeRecordStore() after adding the records to the recordstore (by calling addRecord)?

Hi Shrikanth..
i have created a record store ..
It's working fine..
it's adding records properly...
Bt i am not able to delete the records...
I hav called deleteRecord() bt not able to delete..
what will be the problem?

[harshalpatil]

u dont need path to open record store all u need is the name of the record store. open ur record store like this and ur data will be there of course if u have stored it correctly. hereis a sample

RecordStore rs= RecordStore.openRecordStore("Your Record Store", true);
RecordEnumeration enumRecs = rs.enumerateRecords(null, null, false);

if(enumRecs.hasNextElement())
{
int recordStoreId = enumRecs.nextRecordId();
try
{
byte[] data = rs.getRecord(recordStoreId);
DataInputStream dis = new DataInputStream(new ByteArrayInputStream(data));

Name = dis.readUTF();
Address = dis.readUTF();
Gender = dis.readUTF();

} //end of try

catch(Exception e)
{
rs.closeRecordStore();
}// end of catch
}// end of if

rs.closeRecordStore();
}

Hi nicenumen..

i have created a record store ..

It's working fine..

it's adding records properly...

Bt i am not able to delete the records...

I hav called deleteRecord() bt not able to delete..

what will be the problem?

[harshalpatil]

Hi Harshal
It would be easy to figure out if u could post in your code and also would like to to know the device you are talking about.

Mean while u could check for--
1>what happens if u relaunch the app on emulator even if its not visible there then somethings wrong with the code else if it is visible then its an device issue
2>make sure before quitting your app that the recordstore was actually written
3>check for exceptions thrown while writting to recordstore.
4>As suggested above make sure u are closing the recordstore.

Hi adilb...
I have created a record store..
and i could able to write and read the records from record store...
bt noe the problem is i m not able to delete the record from record store..
i have wriitten the deleteRecord(id) function..
Here is my function..

rs = RecordStore.openRecordStore("Inbox", true);

if (rs.getNumRecords() == MAX)
{
re = rs.enumerateRecords(null, null, false);
while (re.hasNextElement())
{
int id = re.nextRecordId();
if (id == 0)
{
rs.deleteRecord(id);
}
}

re.destroy();
}
rs.addRecord( array,0,array.length);
rs.closeRecordStore();
}
what will be the problem??
Thanks...

[ramupc]

DELETE FROM table-name [ WHERE search-condition ]

=====

You can do this using the DELETE command in the format DELETE Database$,Table$. This deletes the table, Table$, from the database, Database$. Note that to do this all of the views on the database, and hence the database itself, must be closed.
==

[nicenouman]

rs = RecordStore.openRecordStore("Inbox", true);

if (rs.getNumRecords() == MAX)
{
re = rs.enumerateRecords(null, null, false);
while (re.hasNextElement())
{
int id = re.nextRecordId();
if (id == 0) // change here
{
rs.deleteRecord(id);
}
}

re.destroy();
}
rs.addRecord( array,0,array.length);
rs.closeRecordStore();
}


you are deleting only one record having ID =0. infact that is the only record that will be deleted. after that u add another record this record will not have id 0. it will have a different ID.