Berkeley DB: DbSequence
Description: Berkeley DB: An embedded database programmatic toolkit.
Keywords: embedded,database,programmatic,toolkit,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,Java,C,C++

### DbSequence |

`

###

    #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`

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