Concepts

Four Concepts: Topic / Message / Tag / Label

• Topic
  • Contains 0 or n messages
  • Administrator(s) of Topic can create Topic inside it
• Message
  • Consists of text, tags and labels
  • Can not be deleted or modified (by default)
  • Is limited in characters (topic setting)
  • Is always attached to one topic
• Tag
  • Within the message content
  • Can not be added after message creation (by default)
• Label
  • Can be added or removed freely
  • Have a color

Think about messages as plain information pieces, their meaning are contextualized through microservices using those messages and views you plug on their topics.

Users, Groups and Administrators

• Group
  • Managed by an administrator(s): adding or removing users from the group
  • Without prior authorization, a group or user has no access to topics
  • A group or a user can be read-only or read-write on a topic
• Administrator(s)
  • First user created is an administrator
  • Tat Administrator: all configuration access
  • On Group(s): can add/remove member(s)
  • On Topic(s): can create sub-topics, update rights parameters and default view

Some rules and rules exception

• Deleting a message is possible in the private topics, or can be granted on other topic
• Modification of a message is possible in private topics, or can be granted on other topic
• The default length of a message is 140 characters, this limit can be modified by topic
• A date creation of a message can be explicitly set by a system user
• message.dateCreation and message.dateUpdate are in timestamp format, ex:
  • 1436912447: 1436912447 seconds
  • 1436912447.345678: 1436912447 seconds and 345678 milliseconds

FAQ

What about attachment (sound, image, etc…) ? Tat Engine stores only text. Use other application, like Plik to upload file and store URL on Tat.