# Eo / Ejb

## Overview

The `eo.ejb` package is an EJB (Enterprise Java Bean) subpackage that provides the enterprise-tier infrastructure for this area of the codebase. It organizes stateless or stateful session beans that serve as the business logic layer, exposing application capabilities to remote or local callers through standardized EJB interfaces.

This appears to be part of a larger Jakarta EE / Java EE application where EJBs act as the server-side component model for business services. The module itself is currently a container for child sub-packages that implement specific domain functionality.

## Sub-module Guide

### cbs

The `cbs` sub-package sits directly under `eo.ejb` and appears to represent EJB components in the CBS (likely Core Banking System or Central Business Service) domain. This sub-package organizes the enterprise beans that implement business operations specific to the CBS context.

A `cbsmsg` sub-package is anticipated in the wiki structure, suggesting a messaging-focused sub-component for CBS-related communication may be planned or partially implemented. However, no source files or documentation for `cbsmsg` exist on disk yet.

### How sub-modules relate

Within `eo.ejb`, the sub-modules each own a vertical slice of business capability at the EJB layer. `cbs` handles the core domain logic, while the anticipated `cbsmsg` sub-module would appear to handle message-oriented interactions for that domain (e.g., processing CBS-related messages or events). The relationship suggests a split between synchronous business operations (`cbs`) and asynchronous or messaging-driven workflows (`cbsmsg`), though the messaging layer has not yet materialized in the code index.

```
flowchart LR
    EJB["EJB Parent Package"]
    CBS["CBS Sub-package"]
    CBSMSG["CBS Messaging Sub-package (anticipated)"]
    EJB --> CBS
    EJB --> CBSMSG
```

## Key Patterns and Architecture

No architectural patterns are currently visible in the index because no Java source files have been indexed for the `eo.ejb` package or its sub-modules. Once source files become available, this section will be expanded to cover:

- EJB component types (stateless, stateful, singleton session beans)
- Transaction management and boundary patterns
- Session facade or other EJB-specific architectural patterns
- Data flows between sub-modules

## Dependencies and Integration

No package dependencies or cross-module relationships have been resolved for this module. When source files are indexed, dependency graphs and integration points will be documented here.

## Notes for Developers

- **No source files indexed.** This package currently has no indexed Java source files, classes, interfaces, or methods. Development work here should ensure that new Java source files are added to the index so they can be documented and analyzed.
- **CBS domain identification.** The `cbs` sub-package name strongly suggests a connection to a Core Banking System or Central Business Service domain. New developers should confirm the exact meaning of "CBS" in this project's context to understand the business scope.
- **Anticipated cbsmsg module.** The wiki structure references a `cbsmsg` sub-module, which likely deals with CBS-related messaging or message handling. If this module is being developed, ensure it is added to the index alongside the rest of the `eo.ejb` tree.
- **EJB-level scope.** Because this package operates at the EJB tier, beans here typically serve as the server-side business entry points. Developers should be familiar with the EJB lifecycle, dependency injection (`@Inject`, `@EJB`), and transaction management annotations used in the broader application.