Hello all,

Win2003, VS2005, BerkeleyDb 4.4 recompiled with VS2005

I have some pretty simple code here based on the BerkeleyDb docs:

int main()
{
char *pathtoDb = "c:\\dev\\dbenv\\mydb.db";
char *description = "Grocery bill";
float money = 123.45;

Db mydb(NULL, 0);
mydb.set_error_stream(&std::cerr);
mydb.open(NULL, pathToDb, NULL, DB_BTREE, 0, 0);

Dbt key(&money, sizeof(float));
Dbt data(description, strlen(description) + 1);

try
{
int retcode = mydb.put(NULL, &key, &data, DB_NOOVERWRITE);
if ( DB_KEYEXIST == retcode )
db.err(retcode, "Duplicate key" );
}
catch ( DbException &e )
{
std::cout << "Error: " << e.what() << std::endl;
}
catch ( std::exception &e )
{
// output e.what()
}

mydb.close(0);
return (0);
}

mydb.db started off with no data in it. I run the app once and the call
to Db:ut() is 0. I run it twice so that the duplicate key exception
will be caught, but an unhandled exception is thrown "Access violation
writing location.."

Changing the "flags" parameter in Db:ut() from DB_NOOVERWRITE to 0
and the application runs fine. So I'm assuming the duplicate key
detection specified by DB_NOOVERWRITE is functioning correctly - and
that I can't catch the exception correctly.

Any help here is appreciated,
Ron

Did your database already exist? Or did you forget to add the DB_CREATE
flag to your call to DB->open?
-Joe




"ryoungdev (AT) gmail (DOT) com" <ryoungdev (AT) gmail (DOT) com> wrote:


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