Software: Apache/2.0.54 (Unix) mod_perl/1.99_09 Perl/v5.8.0 mod_ssl/2.0.54 OpenSSL/0.9.7l DAV/2 FrontPage/5.0.2.2635 PHP/4.4.0 mod_gzip/2.0.26.1a 

uname -a: Linux snow.he.net 4.4.276-v2-mono-1 #1 SMP Wed Jul 21 11:21:17 PDT 2021 i686 

uid=99(nobody) gid=98(nobody) groups=98(nobody) 

Safe-mode: OFF (not secure)

/usr/doc/db-3.3.11/ref/upgrade.3.0/   drwxr-xr-x
Free 318.36 GB of 458.09 GB (69.5%)
                            Encoder    Tools    Proc.    FTP brute    Sec.    SQL    PHP-code    Update    Feedback    Self remove    Logout    

Viewing file:     db_cxx.html (3.1 KB)      -rw-r--r--

Berkeley DB Reference Guide: Upgrading Berkeley DB Applications

Release 3.0: the Db class for C++ and Java

The static Db::open method and the DbInfo class have been removed in the Berkeley DB 3.0 release. The way to open a database file is to use the new Db constructor with two arguments, followed by set_XXX methods to configure the Db object, and finally a call to the new (nonstatic) Db::open(). In comparing the Berkeley DB 3.0 release open method with the 2.X static open method, the second argument is new. It is a database name, which can be null. The DbEnv argument has been removed, as the environment is now specified in the constructor. The open method no longer returns a Db, since it operates on one.

Here's a C++ example opening a Berkeley DB database using the 2.X interface:

// Note: by default, errors are thrown as exceptions
Db *table;
Db::open("lookup.db", DB_BTREE, DB_CREATE, 0644, dbenv, 0, &table);

In the Berkeley DB 3.0 release, this code would be written as:

// Note: by default, errors are thrown as exceptions
Db *table = new Db(dbenv, 0);
table->open("lookup.db", NULL, DB_BTREE, DB_CREATE, 0644);

Here's a Java example opening a Berkeley DB database using the 2.X interface:

// Note: errors are thrown as exceptions
Db table = Db.open("lookup.db", Db.DB_BTREE, Db.DB_CREATE, 0644, dbenv, 0);

In the Berkeley DB 3.0 release, this code would be written as:

// Note: errors are thrown as exceptions
Db table = new Db(dbenv, 0);
table.open("lookup.db", null, Db.DB_BTREE, Db.DB_CREATE, 0644);

Note that if the dbenv argument is null, the database will not exist within an environment.

Copyright Sleepycat Software