DevFoundry/.devfoundry/references/asp-classic-framework.md

ASP Classic Framework Reference — RouteKit Classic ASP

All new ASP Classic / VB6 web applications in this workspace are built on the RouteKit Classic ASP MVC framework (source: https://onefortheroadgit.sytes.net/dcovington/asp-classic-unified-framework.git). Do not hand-roll a routing/DAL/error-handling scheme when this framework already provides one — use it, and only extend it inside app/ (never modify core/).

Directory Layout

public/              # IIS site root — Default.asp (front controller), web.config
core/                # Framework internals — do not modify
  autoload_core.asp  # loads all core libraries
  router.wsc         # route matching
  mvc.asp            # MVC_Dispatcher_Class — resolves route, validates controller/action against the whitelist, dispatches
  databaseConnection.asp  # DatabaseConnection_Class — ADODB.Connection factory (Access/SQL Server/ODBC)
  lib.DAL.asp         # DAL() singleton — Database_Class initialized from GetAppSetting("ConnectionString")
  lib.ErrorHandler.asp    # ErrorHandler_Class — dev vs prod error display + flat-file logging
  lib.Migrations.asp  # Migrator_Class — schema_migrations table, Up/Down migrations, transactional
  lib.ControllerRegistry.asp  # controller/action name-format + whitelist validation
  helpers.asp         # GetAppSetting(), QuoteValue, FormatDateForSql, etc.
app/
  controllers/        # one *_Class per controller + autoload_controllers.asp
  views/<Controller>/  # one .asp view per action; app/views/shared/ for header/footer
  models/             # generated POBOs
  repositories/       # generated repository classes
db/
  migrations/         # timestamped *.asp migration files (YYYYMMDDHHMMSS_description.asp)
  webdata.accdb        # the Access database (dev default)
scripts/              # code generators, run via cscript
tests/                # dev-only aspunit harness — separate IIS app, sibling to public/

Adding a Feature (always in this order)

1. cscript //nologo scripts\generateMigration.vbs create_my_table → edit the generated db/migrations/<ts>_create_my_table.asp, implementing Migration_Up(migration) / Migration_Down(migration) using MigrationContext_Class helpers (CreateTable, AddColumn, DropColumn, CreateIndex, ExecuteSQL).
2. cscript //nologo scripts\GenerateRepo.vbs /table:my_table /pk:id → move generated POBO/repository into app/models/ and app/repositories/.
3. cscript //nologo scripts\generateController.vbs MyController "Index;Show(id);Create;Store" → move into app/controllers/.
4. Wire up: register in core/lib.ControllerRegistry.asp, include from app/controllers/autoload_controllers.asp, add routes in public/Default.asp, add views under app/views/MyController/.
5. cscript //nologo scripts\runMigrations.vbs status (and up) to apply pending migrations — never hand-edit webdata.accdb's schema outside a migration file.

Database Access

• Never open an ADODB.Connection directly in a controller/view. Use DAL() (core/lib.DAL.asp), which wraps DatabaseConnection() (core/databaseConnection.asp) and is initialized once per request from GetAppSetting("ConnectionString") in public/web.config.
• Connection lifetime is one HTTP request — DAL__Singleton and DatabaseConnection__Singleton are page-scope Dim variables, not Application-scoped. Never cache a DAL()/connection reference in Session or Application scope; each request must acquire and release its own.
• Parameterize all queries; use QuoteValue() (core/helpers.asp) for any value that must be inlined into dynamic SQL, and FormatDateForSql() for date literals.
• Schema changes go through Migrator_Class (core/lib.Migrations.asp) only, run via scripts/runMigrations.vbs. ApplyMigration/RollbackMigration already wrap each migration in BeginTransaction/CommitTransaction/RollbackTransaction.

Concurrency (multi-session Access writes)

This app is a web app where multiple ASP sessions read/write the same .accdb concurrently (see .devfoundry/rules/database-sql.md for the general rule). In this framework specifically:

• Keep connections request-scoped as above — never hold one open across requests, which is what causes most Access lock contention.
• Wrap any multi-statement write sequence in a transaction via DAL()/Migrator_Class-style BeginTransaction/CommitTransaction/RollbackTransaction so partial writes can't leave the .accdb in a locked, half-written state.
• Run runMigrations.vbs (structural changes) during a maintenance window with no concurrent user traffic — the migration's own transaction protects the schema, but table-locking under structural DDL can still starve concurrent user requests.

Error Handling & Logging

• Use ErrorHandler_Class (core/lib.ErrorHandler.asp) — ErrorHandler().HandleError(context, Err) or ErrorHandler().CheckAndHandle(context). It already branches on GetAppSetting("Environment") (detailed HTML in Development, generic message in Production).
• Flat-file logging is controlled by public/web.config appSettings: EnableErrorLogging (true/false) and ErrorLogPath (absolute path). Set both per environment in .devfoundry/references/environments.md once known for this project — do not invent a different logging mechanism.
• core/mvc.asp's dispatcher already wraps controller-action execution and calls its own dispatch-error handler; new controllers do not need to duplicate top-level On Error Resume Next around the whole action unless doing something the dispatcher doesn't cover.

Testing (TDD harness)

• The framework ships a dev-only aspunit harness under tests/, run as a separate IIS application (sibling to public/, parent paths enabled). See TESTING.md in the framework repo for full setup.
• Test types: tests/unit/ (deterministic helpers/registry), tests/component/ (controller/object with controlled setup), tests/integration/ (router/dispatch, config, rendered-output smoke tests).
• A new test page includes ../aspunit/Lib/ASPUnit.asp and ../bootstrap.asp, registers a module via ASPUnit.AddModule(...), calls ASPUnit.Run(), and must be added to tests/test-manifest.asp (manifest is manual, no auto-discovery).
• Run via the browser runner (run-all.asp inside the tests/ IIS app) or tests\run-tests.cmd. Because a real test harness exists, the TDD rule in .devfoundry/rules/general.md applies literally here — write the failing aspunit test first, confirm it fails, then implement.

Configuration

• All project settings live in public/web.config <appSettings> (ConnectionString, Environment, EnableErrorLogging, ErrorLogPath, plus UI/cache settings) and are read via GetAppSetting(key) (core/helpers.asp), which caches per-key in Application scope after first read.
• Never hardcode a connection string, log path, or environment flag inside a controller/view/migration — always read it via GetAppSetting.