# Eo / Web / Webview

## Overview

The `eo.web.webview` module is a web-facing subpackage that serves as a structural anchor for webview screens within the application. It follows a traditional JSP-based MVC pattern (resembling Struts 1.x), where each screen is composed of three collaborating pieces:

- **A bean** — a plain Java object that carries view-scoped data and is accessed by the JSP via Expression Language (EL).
- **A logic class** — an action-style controller whose `execute()` method handles the request, populates the bean, and returns a result string.
- **An XML config file** — maps request paths to the bean and logic classes, and a JSP view template renders the page using the populated bean.

At present, the module is minimal. Classes are thin placeholders with no active business logic, suggesting this is scaffolding for future development or a generated fixture kept in place as a structural template. The module does not contain any indexed source files, classes, or methods in the current codebase, meaning the actual implementation likely resides in companion files (such as the XML config and JSP views) that are not part of the Java class index.

## Sub-module Guide

### ACA001SF

`ACA001SF` is the sole documented child module under `eo.web.webview`. It implements a stubbed webview screen with the following components:

| Component | Role |
|-----------|------|
| `ACA001SFBean` | Data carrier bean holding a single `String value` property |
| `ACA001SFLogic` | Controller class with an empty `execute()` stub |
| `WEBGAMEN_FULL_ACA001.xml` | XML config mapping the request path to the bean and logic |
| `FULL_ACA001010PJP.jsp` | JSP view that renders the page using bean properties |

**Relationship to the broader module**: `ACA001SF` is a self-contained unit — it does not depend on or extend any other classes within `eo.web.webview`, and no other sub-modules exist in the current index. It appears to be a template that demonstrates the standard three-tier structure expected for each screen in this package. New screens would follow this same pattern: create a bean, create a logic class, wire them via XML config, and author the JSP.

### Naming Convention

The `ACA001SF` name follows a scheme:
- **ACA** — likely denotes a domain or screen area.
- **001** — a sequence number.
- **SF** — possibly denotes a screen or frame type.

This naming convention can serve as a guide when adding new screens to the module.

## Key Patterns and Architecture

### MVC Trio Pattern

Every screen in this module (as exemplified by `ACA001SF`) follows a three-component pattern:

```mermaid
flowchart TD
    A["XML Config
(REQ mapping)"] --> B["Bean
(data carrier)"]
    A --> C["Logic
(execute)"]
    D["JSP View
(rendering)"] --> B
    D --> C
```

1. **XML Config** — Acts as the router. It maps a request path to the bean class, the logic class, and the target JSP view. This is likely Struts-style action configuration.
2. **Logic.execute()** — The action entry point. When a request arrives, the framework instantiates the logic class and calls `execute()`. This method is expected to populate the bean and return a result string (e.g., `"SUCCESS"` or `"FAILURE"`). Currently empty.
3. **Bean** — A POJO holding view-scoped data. JSPs access bean properties via standard JavaBean getters, making them available as EL expressions (e.g., `${value}`).
4. **JSP View** — Renders the final HTML. It reads from the bean to display dynamic data and may invoke the logic indirectly through the framework.

### Design Observations

- **Thin scaffolding**: The logic `execute()` method is a no-op, and the bean only carries one property. This is intentional scaffolding — the structure is in place so new screens can be added by following the same template.
- **Bean convention**: Use standard JavaBean getter/setter naming. Any new fields added to the bean will be automatically accessible in JSPs via EL.
- **Empty dependency footprint**: No external package dependencies are declared. This module is intentionally lightweight and relies on the broader application framework (Struts or similar) for wiring.

## Dependencies and Integration

### Internal (within eo.web.webview)

No other sub-modules or classes exist in the current index, so `ACA001SF` stands alone.

### Inbound Dependencies

| Dependency | Relationship |
|------------|-------------|
| `WEBGAMEN_FULL_ACA001.xml` | Wires `ACA001SFBean` and `ACA001SFLogic` together; likely defines the Struts action mapping |
| `FULL_ACA001010PJP.jsp` | Consumes both bean and logic via the framework; renders the page |

### Outbound Dependencies

None declared. The classes themselves do not reference external packages.

### Framework Context

The overall architecture (XML-configured actions, `execute()` entry point, JSP views with EL binding) strongly suggests a **Struts 1.x** or similar MVC framework. For specifics on action mappings, scope management, and framework conventions, consult the broader application architecture documentation.

## Notes for Developers

- **Before implementing logic**: Review surrounding modules in `eo.web.webview` for conventions on how action logic is structured, how beans are scoped, and how results are routed.
- **Adding a new screen**: Follow the `ACA001SF` template — create a bean with any required fields (with getters/setters), create a logic class with an `execute()` method, wire them in XML config, and author the JSP.
- **Bean fields**: Remember to provide both `get` and `set` methods for any new fields so they are accessible in JSP EL expressions.
- **Naming**: Use the existing convention (`ACA` prefix + sequence number + type suffix) when naming new sub-packages to maintain consistency with the broader application structure.
- **Current state**: This module is effectively a structural placeholder. No business logic is implemented yet. Treat it as a template rather than a fully functional feature.