DBSequence¶

DBSequence Methods¶

DBSequence(db, flags=0)¶

Constructor. More info...

open(key, txn=None, flags=0)¶

Opens the sequence represented by the key. More info...

close(flags=0)¶

Close a DBSequence handle. More info...

initial_value(value)¶

Set the initial value for a sequence. This call is only effective when the sequence is being created. More info...

get(delta=1, txn=None, flags=0)¶

Returns the next available element in the sequence and changes the sequence value by delta. More info...

get_dbp()¶

Returns the DB object associated to the DBSequence. More info...

get_key()¶

Returns the key for the sequence. More info...

remove(txn=None, flags=0)¶

Removes the sequence from the database. This method should not be called if there are other open handles on this sequence. More info...

get_cachesize()¶

Returns the current cache size. More info...

set_cachesize(size)¶

Configure the number of elements cached by a sequence handle. More info...

get_flags()¶

Returns the current flags. More info...

set_flags(flags)¶

Configure a sequence. More info...

stat(flags=0)¶

Returns a dictionary of sequence statistics with the following keys:

wait	The number of times a thread of control was forced to wait on the handle mutex.
nowait	The number of times that a thread of control was able to obtain handle mutex without waiting.
current	The current value of the sequence in the database.
value	The current cached value of the sequence.
last_value	The last cached value of the sequence.
min	The minimum permitted value of the sequence.
max	The maximum permitted value of the sequence.
cache_size	The number of values that will be cached in this handle.
flags	The flags value for the sequence.

More info...

get_range()¶

Returns a tuple representing the range of values in the sequence. More info...

set_range((min, max))¶

Configure a sequence range. More info...