# Eo

## Overview

`Eo` appears to be a web-facing area of the codebase whose visible responsibility is to support configuration-driven screen wiring. The available documentation for its child area suggests that this package is not centered on rich domain logic, but on providing the classes and contracts that a framework, XML configuration, and JSP pages use together at runtime.

In other words, `Eo` seems to represent the boundary between framework dispatch and presentation. The code that matters most here is not necessarily the business logic itself, but the small set of classes that external resources reference to move data from request handling into the view layer.

## Sub-module Guide

### [Eo / Web](.codewiki/eo/web.md)

`web` is the only documented child area for `Eo`, and it defines the system behavior observed in this analysis.

That child documentation describes a very compact web flow:

- `ACA001SFLogic` acts as the execution-side entry point.
- `ACA001SFBean` acts as the view-side data carrier.
- XML configuration files wire those classes into the application flow.
- A JSP view reads the bean to render the response.

The important relationship is that `ACA001SFLogic` and `ACA001SFBean` are not just two unrelated classes. They appear to be paired integration artifacts: one is invoked by the framework to perform the screen action, and the other is exposed to the view so the JSP can render output. The parent package therefore looks like a namespace for web integration concerns, while the child documents the concrete runtime wiring.

Because there are no other indexed child pages, source files, or package dependencies at the parent level, `web` effectively defines the whole documented shape of `Eo` in this code analysis.

## Key Patterns and Architecture

### Configuration-first web wiring

The strongest architectural signal is that the package appears to rely on XML and JSP references rather than direct Java-to-Java orchestration. The documented classes are consumed from multiple external configuration files and a JSP, which suggests a declarative framework integration model.

### Thin action hook and minimal view model

The child page describes `ACA001SFLogic.execute()` as empty and `ACA001SFBean` as a minimal read-only bean with a single string value. That combination suggests the package is intentionally lightweight. It appears to exist primarily to satisfy framework contracts and to provide a stable handoff object for the presentation layer.

### End-to-end request-to-view flow

A reasonable reading of the system is:

1. XML configuration selects the logic and bean classes.
2. The framework instantiates or resolves `ACA001SFLogic`.
3. `execute()` runs as the action hook.
4. `ACA001SFBean` is made available to the view layer.
5. The JSP reads the bean value through `getValue()` and renders the output.

```mermaid
flowchart TD
Config["XML configuration"] --> Logic["ACA001SFLogic"]
Config --> Bean["ACA001SFBean"]
Logic --> Execute["execute()"]
Bean --> Value["getValue()"]
Jsp["JSP view"] --> Bean
```

This appears to make `Eo` less of a general-purpose library and more of a framework binding layer that keeps dispatch, state exposure, and rendering aligned.

## Dependencies and Integration

The available analysis did not resolve package-level dependencies or import patterns for `Eo` itself. The integration points are instead visible through the child module's references to external XML and JSP resources.

### Referenced integration points from the child module

The child documentation names the following resources as consumers of the `web` classes:

- `WEBGAMEN_FULL_ACA001.xml` uses `ACA001SFBean` and `ACA001SFLogic`
- `faces-config.xml` uses `ACA001SFBean`
- `WEBGAMEN_ACA001010PJP.xml` uses `ACA001SFBean` and `ACA001SFLogic`
- `x33S_ACA001.xml` uses `ACA001SFBean` and `ACA001SFLogic`
- `FULL_ACA001010PJP.jsp` uses `ACA001SFBean`
- `external-refs.xml` uses `ACA001SFLogic`

### What this implies about the broader system

- The package appears to be strongly coupled to framework configuration.
- Class names and method signatures are likely part of a public integration contract.
- Changes here may break runtime wiring even if the Java code still compiles.
- External XML and JSP resources likely carry much of the real integration logic.

## Notes for Developers

- Treat the classes under `web` as integration contracts, not isolated implementation details.
- If you rename classes, move packages, or alter public methods, verify every XML and JSP reference that mentions them.
- The empty `execute()` method suggests behavior may be intentionally delegated elsewhere. Before adding logic, confirm whether the surrounding framework expects the class to stay minimal.
- `ACA001SFBean` is described as read-only in the child page, so changing its shape may affect reflective binding or view assumptions.
- Since this package analysis shows no other documented children, preserve the configuration-first style unless the web architecture is being intentionally redesigned.

## Relationship Summary

- `Eo` is the parent web integration area.
- `web` defines the documented screen-level wiring for the package.
- `ACA001SFLogic` provides the runtime entry point.
- `ACA001SFBean` carries data into the view layer.
- XML resources connect the runtime hook and bean to the application.
- JSP views consume the bean to render the response.

Overall, `Eo` appears to be a compact web-layer package whose main job is to keep configuration, execution, and presentation synchronized around a small set of framework-bound classes.