Ferret File System/v0.1/SQL/entry

About

• Purpose: base table for files, folders, and possibly other types of directory entries

fields

• ID_Volume is the volume on which the directory entry appears.
  • NULL if volume is unknown -- e.g. we might not know what volume a remote Samba share is on. Not sure if this will be used.
• Name is not the full path, just the entry's filename (including any .ext). If it is the root folder of a volume (ID_Parent IS NULL), then Name should not be included when constructing a path or filespec. Name must always be non-null, so this value is filled with something meaningless like "" if it is a root folder.

history

• 2016-02-27 started
• 2017-12-03 Inode, didSeek

SQL

CREATE TABLE `entry` (
  `ID`          INT NOT NULL AUTO_INCREMENT,
  `ID_Volume`   INT DEFAULT NULL      COMMENT "volume on which this entry appears; NULL = unknown",
  `ID_Parent`   INT DEFAULT NULL      COMMENT "parent folder; NULL = filesystem root",
  `ID_Link`     INT DEFAULT NULL      COMMENT "NOT NULL = this is a link to another entry whose ID is ID_Link",
  `Inode`       INT DEFAULT NULL      COMMENT "inode number (if available)",
  `Name`        VARCHAR(255) NOT NULL COMMENT "filesystem's name for the entry",
  `WhenCreated` DATETIME DEFAULT NULL COMMENT "entry's creation timestamp, where available",
  `WhenChanged` DATETIME DEFAULT NULL COMMENT "entry's modification timestamp, where available",
  `didSeek`     BOOL DEFAULT FALSE    COMMENT "TRUE = looked for this entry in the filesystem",
  `didFind`     BOOL DEFAULT FALSE    COMMENT "TRUE = was found on most recent scan",
  `didRead`     BOOL DEFAULT FALSE    COMMENT "TRUE = filesystem allowed read access on last scan attempt",
  PRIMARY KEY(`ID`)
)
ENGINE = INNODB;