DBHASH_OPEN
NAME
dbhash_open - Open a database of type key/data.
SYNOPSIS
dbhash_open (file:string, [,mode:integer,bnum:integer]);
DESCRIPTION
This function is used to open a key/data(nosql) database. The advantage of a key/data database over a relationnal database is the speed.
The disavantage is that a key/data does not support SQL.
The following definitions could be used for key/data operation:
%define GDBM_READER 0; /* A reader. */
%define GDBM_WRITER 1; /* A writer. */
%define GDBM_WRCREAT 2; /* A writer. Create the db if needed. */
%define GDBM_NEWDB 3; /* A writer. Always create a new db. */
%define GDBM_FAST 0x10; /* Write fast! => No fsyncs. OBSOLETE. */
%define GDBM_SYNC 0x20; /* Sync operations to the disk. */
%define GDBM_NOLOCK 0x40; /* Don't do file locking operations. */
%define GDBM_INSERT 0; /* Never replace old data with new. */
%define GDBM_REPLACE 1; /* Always replace old data with new. */
PARAMETERS
- mode
- Specify mode. Default is GDBM_WRCREAT.
- bnum
- Block_size is the size of a single transfer from disk
to memory. This parameter is ignored unless the file is a new file. The minimum size is 512. If it is less than 512, dbm will use the stat block size for
the file system.
RETURN
- db
- Pointer to the database. Used for all other call
MODULES
To use this module, you must specify the following in /usr/local/website/site.conf:
Module hash {
Library : "/usr/local/lib/libsndbhash.so"
Init : "sndbhash_init"
}
EXAMPLES
hash = dbhash_open("/hash/test.db");
SEE ALSO
{{ include("includes/dbhash.sn") }}
AUTHOR
Written by Pierre Laplante, <laplante@sednove.com>
MODIFICATIONS
1.0 2015-02-09 21:24:14 laplante@sednove.com
Edit
