RepoFoundry/docs/uc-002/dcd.md

Design Class Diagram

Metadata

Key	Value
ID	DCD-003
CrossReference	DM-003, SD-002, DICT-001, UC-002, DCD-001

Version History

Date	Status	Author	Reviewer	Change	Commit
2026-10-07	Deprecated	Jens Tirsvad Nielsen	S02	Default configuration files: --config and --env, else ./config.env and ./.env in the working folder, else the checkout's	0ab5006
2026-10-07	Accepted	Jens Tirsvad Nielsen	S02	.env is optional (as in UC-001 extension 2b): only config.env is required; a .env found nowhere means the token is asked	24f1507

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Purpose and Scope

Covers UC-002. Adds the classes that start the script through a command link. ProjectCreator, Configuration and Run are the classes of DCD-001 and change only as stated under Method Traceability. The consolidated diagram is DCD-002.

Diagram

@startuml
class Launcher {
  +resolveCheckout(invocation : Path) : Checkout
  +currentFolder() : WorkingFolder
  +locateConfigFiles(configPath : Path [0..1], envPath : Path [0..1], checkout : Checkout, workingFolder : WorkingFolder) : ConfigFiles
  +startFromWorkingFolder(configPath : Path [0..1], envPath : Path [0..1]) : PromptSet
}
class Checkout {
  -path : Path
  +configFile() : Path
  +envFile() : Path [0..1]
}
class WorkingFolder {
  -path : Path
  +configFile() : Path [0..1]
  +envFile() : Path [0..1]
}
class ConfigFiles {
  -configFile : Path
  -envFile : Path [0..1]
}
class ProjectCreator {
  +startProjectCreation(workingFolder : WorkingFolder, configFiles : ConfigFiles) : PromptSet
}
class Run
Launcher "1" --> "1" ProjectCreator : starts
Launcher ..> Checkout : creates
Launcher ..> WorkingFolder : creates
Launcher ..> ConfigFiles : creates
Run "1" *-- "1" ConfigFiles
Run "1" *-- "1" Checkout
Run "1" *-- "1" WorkingFolder
@enduml

Class Table

Class	Refines (Domain Model concept)	Responsibility	Attributes	Operations
Launcher	Command Link (the object that follows it)	Follows the command link to the checkout, takes the folder the Maintainer stands in, chooses the two configuration files, and starts the run.	none	resolveCheckout, currentFolder, locateConfigFiles, startFromWorkingFolder
Checkout	Checkout	Names the folder that holds the script's own files and the default config.env and .env.	path	configFile, envFile
WorkingFolder	Working Folder	Names the base of the default directory of the new project and the files it may hold.	path	configFile, envFile
ConfigFiles	none (system concept of [OC-002])	Carries the two files chosen for the Configuration; envFile is absent when no credentials file was found.	configFile, envFile	none

The concept Command Link has no class: it is a link the Maintainer makes with the shell, and the system only follows it.

Method Traceability

Method signature	Operation Contract / SD message
Launcher.startFromWorkingFolder(configPath, envPath) : PromptSet	SD-002 startFromWorkingFolder; P1, P6
Launcher.resolveCheckout(invocation) : Checkout	SD-002 resolveCheckout(invocation); P2
Launcher.currentFolder() : WorkingFolder	SD-002 currentFolder(); P3
Launcher.locateConfigFiles(configPath, envPath, checkout, workingFolder) : ConfigFiles	SD-002 locateConfigFiles(...); P5
WorkingFolder.configFile() : Path [0..1], WorkingFolder.envFile() : Path [0..1]	SD-002 locateConfigFiles; P5
Checkout.configFile() : Path, Checkout.envFile() : Path	SD-002 locateConfigFiles; P5
ProjectCreator.startProjectCreation(workingFolder, configFiles) : PromptSet	SD-002 startProjectCreation; P4, P6, P7. Replaces the signature of DCD-001 by adding workingFolder and configFiles

Pattern Annotations

Pattern	Classes	Rationale
Controller	Launcher	One class takes the system operation of UC-002
Information Expert	Launcher, Checkout	The launcher knows the invocation; the checkout knows where its files are

Dependency Check

Launcher depends on ProjectCreator, Checkout, WorkingFolder and ConfigFiles; none of them depends on Launcher, so no cycle is added.

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