Expand a definition into the instance-shaped table

One row per (element, task) for multi-instance tasks, one row per task with `element = NA` for the rest. This is what the instance store's events are folded onto and what the task lists show; the definition itself never grows.

Usage

expand_instance(process, elements = character(), instance = "instance")

Arguments

process

A wide process table (the definition).

elements

Character vector of element ids (e.g. units), or a data frame whose first column holds them plus any grouping columns (e.g. `region`) to carry along.

instance

Instance id.

Value

A data frame with the definition columns plus `instance`, `element` and the instance columns `assignee`, `due`, `status`. The sub-process containers are gone – they are structure, not work – and each row carries its resolved dimension in `per`, so the expanded table answers "what does this repeat over" without the definition beside it.