Ferreteria/v0.42/sql/node

About

• table purpose: root for all data
• record purpose: a thing that has values
• Module: Template:L/version

Concept

Every node

• is a record in the node table
• can have zero or more leafs
  • There's generally no point to having zero, but no reason to forbid it.
• can have a (node) type which points to a handler-class
  • so that when we're looking at a group of unspecified nodes, we know how to handle each one

History

• 2017-03-12 started
• 2017-04-09 decided there really should be a WhenMade timestamp; can always remove later
• 2017-08-05 renamed Class to Type for consistency with tf_leaf: records use "types", code maps these to "classes"
• 2020-01-16 redesigning for v0.4 (copied from Ferreteria/sql/tf node)
• 2020-01-23 copying from v0.41 to v0.42 essentially unaltered

Fields

• Type: name of node type; code should know how to map these to node-handler classes

SQL

CREATE TABLE `node` (
  `ID`       INT(4)       NOT NULL AUTO_INCREMENT,
  `Type`     VARCHAR(255) NOT NULL COMMENT "name of node type",
  `WhenMade` DATETIME     NOT NULL DEFAULT CURRENT_TIMESTAMP,
  PRIMARY KEY(`ID`)
) ENGINE=InnoDB;