# Root

## Overview

The root area appears to be a high-level namespace that gathers several web-facing integration layers under one umbrella. Based on the child documentation, it is not a business-logic package in itself. Instead, it seems to represent the top-level coordination point for application entry into the servlet container, view rendering, and JSF-facing wiring.

Taken together, the sub-modules suggest a system where the application is assembled through container configuration and framework contracts rather than through one large internal API. Each child area owns a different edge of that integration surface: one handles servlet lifecycle hooks, one handles screen-level view wiring, and one provides the Faces servlet entry point.

## Sub-module Guide

### `com.fujitsu.futurity`

This child namespace appears to provide the application-specific servlet integration layer. Its documented focus is on web startup/shutdown behavior and request interception. The key pieces are a context listener and a request filter, which are wired through deployment descriptors such as `web.xml` and `web-full.xml`.

The relationship inside this area is lifecycle plus request flow:

- the listener reacts to container startup and shutdown
- the filter intercepts individual requests before they reach the target servlet or next filter

That means `com.fujitsu.futurity` seems to own container-level behavior for the application as a whole, while leaving the actual business or page logic to downstream components.

### `eo.web`

This child namespace appears to be the screen and view wiring area for the Eo application. The documented `eo.web.webview` module contains a small bean and a logic class that work together as a framework contract rather than as a broad domain API.

The relationship here is configuration-driven:

- external XML configuration selects the logic class
- `ACA001SFLogic.execute()` is the framework entry point
- `ACA001SFBean` supplies the presentation state for rendering
- JSP and XML files outside the package bind those pieces together

So `eo.web` looks like the place where screen implementations are made visible to the wider web stack. Its child module is not isolated; it is dependent on naming consistency and external configuration to function correctly.

### `javax.faces`

This child namespace appears to represent the Faces integration boundary. The documented `javax.faces.webapp` package exposes `FacesServlet`, which deployment descriptors reference to hand control from the servlet container into JSF processing.

That makes this area the formal web-entry point for Faces support. In contrast to the application-specific modules above, `javax.faces` appears to be more framework-facing than business-facing: it provides the servlet hook that other configuration can target.

### How the sub-modules relate

The three child areas appear to occupy adjacent layers of the same web application stack:

- `com.fujitsu.futurity` manages application container integration and request interception
- `eo.web` manages screen-level logic and presentation wiring
- `javax.faces` manages Faces servlet entry and JSF handoff

They do not appear to depend heavily on one another in the captured index, but they likely cooperate through deployment descriptors and runtime mapping. In other words, they are different integration surfaces within the same broader web system rather than tightly coupled internal libraries.

```mermaid
flowchart TD
Root["Root"] --> ComFujitsu["com.fujitsu.futurity"]
Root --> EoWeb["eo.web"]
Root --> JavaxFaces["javax.faces"]
ComFujitsu --> ComWeb["com.fujitsu.futurity.web.x33"]
ComWeb --> WebXml["web.xml and web-full.xml"]
WebXml --> AppListener["X33AppContextListener"]
WebXml --> EncodingFilter["X33JVRequestEncodingSjisFilter"]
EoWeb --> Webview["eo.web.webview"]
Webview --> Logic["ACA001SFLogic"]
Webview --> Bean["ACA001SFBean"]
JavaxFaces --> FacesWebapp["javax.faces.webapp"]
FacesWebapp --> FacesServlet["FacesServlet"]
```

## Key Patterns and Architecture

Several patterns repeat across the sub-modules.

- **Container-driven wiring** — deployment descriptors and external configuration appear to control most runtime behavior.
- **Thin integration layers** — each child module exposes a small surface: a filter and listener, a logic and bean pair, or a servlet entry point.
- **Separation of responsibilities** — lifecycle handling, request filtering, screen execution, and JSF bootstrapping are split across different namespaces.
- **Naming-sensitive contracts** — the Java symbols matter because XML and JSP files refer to them directly.

This appears to be a legacy-friendly architecture where the framework and container hold most of the orchestration. The Java packages provide the stable hooks the container needs, while the real behavior is activated through configuration and runtime mapping. That makes the system easy to wire, but also sensitive to name changes and descriptor drift.

## Dependencies and Integration

The captured evidence suggests that the main integration points are external to the root package itself.

### Visible integration points

- `com.fujitsu.futurity.web.x33` is wired through `web.xml` and `web-full.xml`
- `eo.web.webview` is bound through XML configuration and JSP files such as `WEBGAMEN_FULL_ACA001.xml`, `faces-config.xml`, `WEBGAMEN_ACA001010PJP.xml`, `x33S_ACA001.xml`, `FULL_ACA001010PJP.jsp`, and `external-refs.xml`
- `javax.faces.webapp` exposes `FacesServlet` for servlet-container integration

### What this suggests

The root area appears to connect to the rest of the system primarily through deployment-time configuration and framework conventions rather than through direct package-level coupling. The web container is a major consumer of these modules, and each child area seems to provide a different hook into that container-managed lifecycle.

No indexed source files, classes, package dependencies, or cross-module relationships were captured for the root module itself. That means the overview is necessarily synthesized from the child pages, which point to a system assembled from servlet hooks, JSF entry points, and XML/JSP bindings.

## Notes for Developers

- Treat this area as integration infrastructure, not domain logic.
- Changes to Java class names or package locations can require coordinated updates in XML, JSP, or servlet descriptors.
- The child modules appear to be coupled more by configuration than by direct code references, so review all wiring files when making changes.
- If you are debugging startup or rendering issues, check the listener, filter, servlet mappings, and XML view bindings together rather than in isolation.
- This overview is intentionally conservative: some conclusions are inferred from package names and wiring patterns, so the phrase "This appears to..." should be read literally where used.
- If the codebase grows new child modules here, update this page to explain how they fit into the existing container, view, and Faces integration layers.