d365fo-class-analysis

name	d365fo-class-analysis
description	Use when user asks about D365FO classes, class hierarchies, CoC extensions, or event handlers. "what classes handle purchase invoice posting", "who extends SalesFormLetter", "CoC extensions on PurchFormLetter_Invoice", "class hierarchy for SalesLineType", "event handlers for SalesTable insert", "which class handles ledger posting", "find all extensions of VendInvoiceInfoTable", "what event subscribers exist for CustTable", "how many customizations are on PurchFormLetter"
license	MIT
metadata	{"version":"1.0"}

D365FO Class Analysis

Search and analyze classes, Chain of Command extensions, and event handler subscriptions across all models in the D365FO index.

When to use

• User asks which class handles a specific business process (posting, validation, calculation)
• User asks about class hierarchies or base class chains
• User wants to find all CoC (Chain of Command) extensions on a class
• User wants to find Data Event Handler subscriptions on a table or class
• User is assessing the customization footprint before an upgrade or refactoring
• User wants to understand which custom models touch a specific standard class

Workflow

1. Find candidate classes. Call search_classes(keywords) with business-process terms (e.g., "purchase invoice post", "sales order validation").

2. Get class details. Call get_class_info(className) on the top 1-3 matches to get the method list, base class, interfaces, and which model the class belongs to.

3. Check CoC extensions. Call find_coc_extensions(className) to discover all Chain of Command extension classes across all models in the index.

4. Check event handlers. Call find_event_subscribers(className) to list Data Event Handler subscriptions for the table or class.

5. Summarize with the tables below, highlighting which classes are extended and in which custom models.

Output Format

Class search results

Class	Base Class	Module	Model	Method Count
PurchFormLetter_Invoice	PurchFormLetter	ApplicationSuite	ApplicationSuite	42

CoC Extensions

Extension Class	Extending Model	Extended Methods
PurchFormLetter_Invoice_MyExt	MyCustomModel	run, validate
PurchFormLetter_Invoice_ISVExt	ISVModel	postRun

Event Subscriptions (Data Event Handlers)

Subscriber Class	Subscriber Method	Event	Model
MyEventHandler	onPurchInvoicePosted	Inserted	MyCustomModel

Notes

• Use the CoC extension count to assess upgrade risk: zero extensions = safe; multiple extensions = coordinate with model owners before changing the class.
• If find_coc_extensions returns extensions in the same model as the question originator, show those first — they are most relevant.
• For posting classes, also check run(), post(), and validate() method overrides in the CoC chain.
• If the user asks about a table's methods (not a standalone class), route to the d365fo-table-search skill and use get_table_methods there.