# Eo / Web / Webview

## Overview

`eo.web.webview` is a small web-facing area of the codebase focused on view-specific wiring rather than shared business services. Based on the available child documentation, this package appears to host one self-contained webview flow that connects a bean, a logic entry point, and external UI/configuration artifacts.

The main responsibility of this module is to provide a stable contract for a specific screen or view path. The Java code itself is intentionally minimal, which suggests the real value of the module is in how it anchors XML and JSP integration points rather than in complex in-module processing.

## Sub-module Guide

### `ACA001SF`

[`ACA001SF`](.codewiki/eo/web/webview/ACA001SF.md) is the only documented child area under this parent. It appears to represent a single webview flow with two core classes:

- `ACA001SFBean` - a simple state holder for view data
- `ACA001SFLogic` - the execution hook invoked by the surrounding web framework

These two classes work together as a pair. The bean supplies data that can be rendered or passed around by the UI layer, while the logic class provides the named action point that the framework calls when the view is activated. In other words, the child module is not a set of independent sub-features; it is a coordinated unit where one class holds state and the other represents behavior.

The child documentation also indicates that this flow is referenced externally by XML configuration and JSP pages. That means `ACA001SF` functions less like a standalone library and more like an integration endpoint that other layers depend on.

## Key Patterns and Architecture

### View-flow wiring over business logic

This area appears to follow a thin-controller style webview pattern:

1. External configuration identifies the logic class.
2. The logic entry point is invoked by the framework.
3. A bean supplies the data visible to the JSP layer.
4. The JSP renders the view using that bean.

The child module’s implementation is intentionally sparse, so the architecture is more about consistent naming and binding than about in-package computation. That makes the package easy to reason about, but also means the surrounding framework conventions are critical.

### Bean plus logic pairing

The child page suggests a classic separation between state and execution:

- the bean carries a small amount of view state
- the logic class exposes the action method

This separation keeps the view contract explicit. It also makes the module easier to extend later, because new screen behavior can be added to the logic class without necessarily changing how the view state is represented.

### Minimal surface area

There is no evidence of deeper nesting, helper layers, or cross-module orchestration in the indexed material for this parent package. The design appears intentionally narrow: one flow, one bean, one logic entry point. That simplicity is useful in webview code because most of the complexity is often handled by the framework, templates, or configuration files.

## Dependencies and Integration

### External integration points

The child documentation identifies two external artifacts that depend on `ACA001SF`:

- `WEBGAMEN_FULL_ACA001.xml` - uses `ACA001SFBean` and `ACA001SFLogic`
- `FULL_ACA001010PJP.jsp` - uses `ACA001SFBean` and `ACA001SFLogic`

Those references show that the module sits at the boundary between backend execution and presentation. The XML likely wires the flow into the application runtime, while the JSP consumes the bean for rendering.

### Package-level dependencies

No package dependencies were resolved for `eo.web.webview`, and no source files were indexed directly for the parent package. As a result, the documented integration picture is mostly inferred from the child page and its referenced artifacts.

### Relationship to the rest of the system

This module appears to act as a named webview endpoint within the broader `Eo / Web` area. It does not expose shared utilities or reusable domain logic; instead, it provides a narrowly scoped contract that other layers can invoke or render.

## Mermaid Diagram

```mermaid
flowchart TD
Parent["eo.web.webview"] --> Child["ACA001SF"]
Child["ACA001SF"] --> Bean["ACA001SFBean"]
Child["ACA001SF"] --> Logic["ACA001SFLogic"]
Logic["ACA001SFLogic"] --> Bean["ACA001SFBean"]
XML["WEBGAMEN_FULL_ACA001.xml"] --> Logic
JSP["FULL_ACA001010PJP.jsp"] --> Bean
JSP["FULL_ACA001010PJP.jsp"] --> Logic
```

## Notes for Developers

- Changes in this area likely need coordinated updates across Java, XML, and JSP files because the module is name-driven.
- The child logic class currently appears to be an integration hook rather than a rich behavior container. If you add logic, verify the framework’s expectations for invocation, return handling, and error propagation.
- The bean is a simple state carrier. If additional view state is needed, expand it carefully so the presentation contract remains stable.
- Because the documented surface area is very small, even modest renames can have outsized impact on wiring. Treat class and package names as part of the public contract for the view flow.

## Summary

`eo.web.webview` is a small but important web integration area. Its documented child module, `ACA001SF`, shows a pattern where a bean and a logic class are paired to support a specific JSP-driven flow. The architecture appears to rely on external configuration and templates to do most of the work, while this package provides the stable Java-side entry points those artifacts need.