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1 Reply Latest reply: May 19, 2012 11:59 AM by greybird RSS

cursor woes

938426 Newbie
Currently Being Moderated
hello all.

sorry for such a noob question ... but new to berkeley db je.

i am using the base api, and have basic db creation and insertion (serialized objects) working.

when i go to retrieve data, i can get single items just fine.

but when i try to make a cursor, and iterate though the cursor (say with getNext())
the first few records found seem to be ?garbage?

if i skip over them, with something like
int loop = 0;
while( myCursor.getNext( key, data, LockMode.DEFAULT ) == OperationStatus.SUCCESS ){

if( loop <= 2 ){
loop++;
continue;
}


// de-serialize here ...

}

then the de-serialize works great, and i am de-serializing all the items that i 'think' put 'in' (ass/u/ming i am not the one putting in the garbage).

without the skipover i get corrupted stream errors, i think the data value is null that i am passing into the
entryToObject().

mmm ... couple of hints

i am running in memory only mode.
i open the db(s) and env.
load the db.
try to read the db.
then close everything db(s), env, ect ...


well, any hints would be greatly appreciated

tia!

cheers

kjc.
  • 1. Re: cursor woes
    greybird Expert
    Currently Being Moderated
    Hi,

    You'll need to do a little more debugging and/or post the code that's doing the writing, serialization and deserialization.

    --mark                                                                                                                                                                                                                                                                                       

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