Victor Woeltjen c17269ba8b [LinkService] Reorder/refactor validation
Reoder validation to consider the composition capability
first; refactor to express as a single expression to clarify
validation logic (explicitly say 'and' instead of implying
it with control flow.)

Based on feedback from nasa/openmctweb#98
2015-09-22 13:37:56 -07:00
..
2015-09-02 11:45:52 -07:00

Entanglement

Entanglement is the process of moving, copying, and linking domain objects in such a way that their relationships are impossible to discern.

This bundle provides move, copy, and link functionality. Acheiving a state of entanglement is left up to the end user.

Services implement logic

Each method (move, copy, link) is implemented as a service, and each service provides two functions: validate and perform.

validate(object, parentCandidate) returns true if the object can be move/copy/linked into the parentCandidate's composition.

perform(object, parentObject) move/copy/links the object into the parentObject's composition.

Actions implement user interactions

Actions are used to expose move/copy/link to the user. They prompt for input where necessary, and complete the actions.