]po[ Gantt Editor Scheduler

The "scheduler" algorithm is the 2nd iteration of a scheduling algorithm that has the purpose to move Gantt activitites in the Gantt Editor so that all constraints are met.

Constraints

Supported constraints (2019-03-21):

  • Duration = Work / Resources: This constraint determines the duration of a task if work and resources are defined.
  • Only Finish-to-Start constraints are supported.
  • FS constraints can be applied between activities and summary tasks
  • Summary tasks should move with the contained activities

Constraints not yet supported:

  • Start-to-start, Start-to-Finish and Finish-to-Finish will be supported later
  • Resource Calendar: The Gantt Editor currently calculates hard-coded with 8 hours per day from 9:00 to 17:00.

Scheduling Algorithm

  • Create a list of leaf activities that have to predecessors
  • For each activity:
  • Calculate the length of the activity
  • Calculate a list of all successors
  • For each successor:
  • Fix the start_date so that the successor starts after the activity
  • Calculate the length of the successor
  • Add the successor to the list of activities

 

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