dbInit {filehash} | R Documentation |
Simple file-based hash table
Description
Interface for creating and initializing a simple file-based hash table
Usage
dbCreate(db, ...)
dbInit(db, ...)
## S4 method for signature 'ANY'
dbCreate(db, type = NULL, ...)
## S4 method for signature 'ANY'
dbInit(db, type = NULL, ...)
Arguments
db |
name of database or a database object |
type |
type of database format. If missing, the default type will be used |
... |
other arguments passed to methods |
Details
dbCreate
creates the necessary files or directory for the
database. If those files already exist nothing is done.
dbInit
takes a database name and returns an object
inheriting from class "filehash"
.
The type
argument specifies the format in which the database
should be stored on the disk. If not specified, the default
type will be used (as specified by filehashOption
).
Value
dbCreate
returns TRUE
upon success and FALSE
in
the event of an error. dbInit
returns an object
inheriting from class "filehash"
Note
The function dbInitialize
has been deprecated. Use
dbInit
instead.
Author(s)
Roger D. Peng
See Also
See filehash-class
more information and examples and
filehashOption
for setting the default database type.