class

Lmdb::Cursor

Inherits Lmdb::Base / Reference / Object

Constants

DUPE_OPS = [LibLmdb::CursorOp::MDB_FIRST_DUP, LibLmdb::CursorOp::MDB_LAST_DUP, LibLmdb::CursorOp::MDB_NEXT_DUP, LibLmdb::CursorOp::MDB_PREV_DUP, LibLmdb::CursorOp::MDB_GET_BOTH, LibLmdb::CursorOp::MDB_GET_BOTH_RANGE]

Constructors

new(transaction : Lmdb::Transaction, db : Lmdb::Database)

Source

Instance methods

##/**@brief Close a cursor handle. *

The cursor handle will be freed and must not be used again after this call.
Its transaction must still be live if it is a write-transaction.

count

current

database

del

Delete current key/data pair *

This function deletes the key/data pair to which the cursor refers.

Source

del_all

delete all of the data items for the current key.

  This flag may only be specified if the database was opened with #MDB_DUPSORT.

Source

find(key : Lmdb::KeyTypes, val : Lmdb::ValTypes)

Source

find(key : Lmdb::KeyTypes)

Source

find_ge(key : Lmdb::KeyTypes, val : Lmdb::ValTypes)

This version of the call seeks the value that's greater or equal to the one given FOR THE EXACT KEY. It only looks for the records with the key specified. Only for #MDB_DUPSORT */

Source

find_ge(key : Lmdb::KeyTypes)

Position at first key greater than or equal to specified key.

Source

first

Move to the first key in the database Returns false result if database is empty

Source

first_dup

Source

get_op(key : Lmdb::KeyTypes, data : Lmdb::ValTypes, operation = LibLmdb::CursorOp::None)

Source

last