Ferret File System/v0.1/SQL/folder

About

fields

• ID_Volume is the volume on which the folder appears.
  • NULL if volume is unknown -- e.g. we might not know what volume a remote Samba share is on
• Name is not the full path, just the folder's filename. If it is the root folder of a volume (ID_Parent IS NULL), then Name should not be included as part of the path; drive letters and such are set in Mappings. Name must always be non-null, so this value is filled with something meaningless like "." if it is a root folder. (Maybe we'll put the volume name in there later.)
• noScan is for blacklisting folders whose contents we really don't want to track, such as temp and trash areas which may become full of frequently-changing but useless clutter, or areas where things that aren't really files are kept (e.g. "/dev")
• FirstFound and LastFound may need to be NULL for root folders. It's not clear why this happens (perhaps they were manually created -- but the code should have time-stamped them -- but possibly this was just an oversight, and wouldn't happen with production code).

history

• 2013-06-30 Added ID_Volume field as part of general schema redesign.

SQL

<mysql>CREATE TABLE `folders` (

 `ID`          INT NOT NULL AUTO_INCREMENT,
 `ID_Parent`   INT DEFAULT NULL      COMMENT "parent folder; NULL = filesystem root",
 `ID_Volume`   INT DEFAULT NULL      COMMENT "volume on which this folder appears; NULL = unknown",
 `Name`        VARCHAR(255) NOT NULL COMMENT "filesystem's name for the folder",
 `Descr`       VARCHAR(255) DEFAULT NULL COMMENT "description for human consumption (optional; mainly for local roots)",
 `WhenCreated` DATETIME DEFAULT NULL COMMENT "folder's creation timestamp, where available",
 `WhenChanged` DATETIME DEFAULT NULL COMMENT "folder's modification timestamp, where available",
 `FirstFound`  DATETIME DEFAULT NULL COMMENT "time/date when folder was first found during a scan",
 `LastFound`   DATETIME DEFAULT NULL COMMENT "time/date when folder was most recently found during a scan",
 `isFound`     BOOL DEFAULT FALSE    COMMENT "TRUE = was found on most recent scan",
 `noScan`      BOOL DEFAULT FALSE    COMMENT "TRUE = for whatever reason, don't bother scanning inside this folder",
 `wasDenied`   BOOL DEFAULT FALSE    COMMENT "TRUE = filesystem did not allow access on last scan attempt",
 `isRecur`     BOOL DEFAULT FALSE    COMMENT "TRUE = this folder is a repeat of a parent folder, probably due to a recursive link",
 PRIMARY KEY(`ID`)

) ENGINE = MYISAM;</mysql>