sortedByOrder

Sorts the elements by their Order: a topological sort of the before/after constraints, breaking ties by Order.value and then by input order.

• before = [X::class] places the element before every element whose class is X; after = [X::class] after every such element. A constraint naming a class that is not in the collection is ignored.

• Among the elements whose constraints are satisfied, the one with the lowest value comes first; equal values keep their input order. Without constraints this is a stable sort by value.

• Constraints that form a cycle fail fast with an IllegalStateException that names the cycle.

Example usage:

@Order(1)
class FirstProcessor

@Order(2, before = [ThirdProcessor::class])
class SecondProcessor

@Order(3)
class ThirdProcessor

val processors = listOf(ThirdProcessor(), FirstProcessor(), SecondProcessor())
val sorted = processors.sortedByOrder()
// Result: [FirstProcessor, SecondProcessor, ThirdProcessor]

Type Parameters

See also

Throws