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Berkeley DB: DbSequence
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DbSequence
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#include <db_cxx.h>
class DbSequence {
public:
DbSequence(Db *db, u_int32_t flags);
~DbSequence();
DB_SEQUENCE *DbSequence::get_DB();
const DB *DbSequence::get_const_DB() const;
static DbSequence *DbSequence::get_DbSequence(DB *db);
static const DbSequence *DbSequence::get_const_DbSequence(const DB *db);
...
};
Description: DbSequence
The DbSequence handle is the handle used to manipulate a
sequence object. A sequence object is stored in a record in a
database.
DbSequence handles are free-threaded if the DB_THREAD
flag is specified to the DbSequence::open method when the sequence is opened.
Once the DbSequence::close or DbSequence::remove methods are called, the
handle may not be accessed again, regardless of the method's return.
Each handle opened on a sequence may maintain a separate cache of values
which are returned to the application using the DbSequence::get method
either singly or in groups depending on its delta parameter.
The
constructor creates a
DbSequence object that serves as the handle for a sequence.
Calling the DbSequence::close or DbSequence::remove methods will discard the
handle.
Parameters
db- The db parameter is an open database handle which holds the
persistent data for the sequence. The database may be of any type,
but may not have been configured to support duplicate data items.
flags- The flags parameter is currently unused, and must be set to 0.
Class
DbSequence
See Also
Sequences and Related Methods
Copyright (c) 1996,2008 Oracle. All rights reserved.