# Repository Overview

Welcome to this repository. It appears to be a small Java web application fixture centered on servlet and JavaServer Faces style wiring rather than on heavy business logic. The codebase includes a request-encoding filter, an application context listener, a Faces servlet hook, and a simple web-view module with a bean and companion logic class. Most of the interesting behavior seems to live in XML deployment descriptors and view configuration rather than inside the Java classes themselves.

## Overview

This project appears to define the structural pieces of a classic Java web application. The main purpose is to connect container-level entry points, lifecycle hooks, and page-specific view logic through class names referenced in configuration. In the current source snapshot, most classes are minimal or empty, so the repository is best understood as a wiring example or fixture for web-tier integration.

The most visible concerns are:

- servlet container integration through `FacesServlet`
- request filtering through `X33JVRequestEncodingSjisFilter`
- application lifecycle anchoring through `X33AppContextListener`
- a small page-specific module under `eo.web.webview.ACA001SF`

## Technology Stack

The detected stack is intentionally lightweight and mostly standard Java web technology:

- **Java Servlet API** - used by `X33JVRequestEncodingSjisFilter` and implied by the web application structure
- **JavaServer Faces / JSF** - suggested by `javax.faces.webapp.FacesServlet` and `faces-config.xml` references
- **XML deployment descriptors** - `web.xml`, `web-full.xml`, and other config files appear to drive wiring
- **JSP-based view integration** - the `ACA001SF` module is referenced from JSP and XML configuration

No well-known higher-level framework was clearly identified from import analysis. That suggests the repository is either very small, heavily configuration-driven, or intentionally reduced for fixture purposes.

## Architecture

At a high level, the repository appears to use container-managed entry points and configuration-based linking between modules. The servlet container loads the filter, listener, and Faces servlet from deployment descriptors, then delegates into the page-specific `ACA001SF` view logic when the relevant screen is invoked.

```mermaid
flowchart TD
webXml["web.xml"] --> FacesServlet["FacesServlet"]
webXml --> X33AppContextListener["X33AppContextListener"]
webXml --> X33JVRequestEncodingSjisFilter["X33JVRequestEncodingSjisFilter"]
webFullXml["web-full.xml"] --> FacesServlet
webFullXml --> X33JVRequestEncodingSjisFilter
webFullXml --> ACA001SFBean["ACA001SFBean"]
webFullXml --> ACA001SFLogic["ACA001SFLogic"]
FacesServlet --> ACA001SFBean
FacesServlet --> ACA001SFLogic
X33AppContextListener --> X33ListenerPackage["com.fujitsu.futurity.web.x33.listener"]
X33JVRequestEncodingSjisFilter --> FilterChain["FilterChain"]
```

This diagram reflects the main relationships visible in the source references. The configuration files appear to be the true integration layer, while the Java classes provide the named hooks those files need.

## Module Guide

### `com.fujitsu.futurity.web.x33.filter`

This module appears to contain a servlet filter used in the request pipeline. Its single class, `X33JVRequestEncodingSjisFilter`, implements the Servlet API `Filter` interface and is referenced from both `web.xml` and `web-full.xml`. The class currently behaves as a pass-through filter: it calls `chain.doFilter(req, res)` and does not modify request encoding or response state. The name suggests it may have been intended to normalize Shift_JIS request handling, but that behavior is not implemented in the checked-in code.

### `com.fujitsu.futurity.web.x33.listener`

This module appears to reserve a place for application lifecycle hooks. It contains `X33AppContextListener`, which is referenced from `web.xml` but currently has no fields, methods, or interfaces. In practical terms, the class acts as a placeholder that can later be expanded into startup or shutdown logic for the web application.

### `eo.web.webview.ACA001SF`

This module appears to represent one screen or feature area in the web layer. It contains `ACA001SFBean`, a tiny bean with a single `value` property, and `ACA001SFLogic`, an executable entry point with an `execute()` method. The class pair is referenced from XML and JSP configuration, which suggests they serve as the page-facing state and controller/logic hook for the `ACA001SF` view. A second `ACA001SFLogic` source copy exists in an `xml-unresolved-fqn` fixture tree, indicating this module is also used for resolution or wiring tests.

### `javax.faces.webapp`

This module appears to provide the JSF servlet entry point. It contains `FacesServlet`, which is referenced by both `web.xml` and `web-full.xml`. The class body is empty in the fixture, but its presence is important because it anchors the Faces runtime to the container and gives the application a standard JSF request-handling target.

## Getting Started

If you are new to the repository, a good reading order is:

1. **`web.xml` and `web-full.xml`** - these appear to be the main wiring files and show how the application is assembled.
2. **`javax.faces.webapp.FacesServlet`** - start here to understand the web entry point the container uses.
3. **`com.fujitsu.futurity.web.x33.filter.X33JVRequestEncodingSjisFilter`** - review this to see how requests are intercepted before reaching the rest of the app.
4. **`com.fujitsu.futurity.web.x33.listener.X33AppContextListener`** - inspect this as the application lifecycle hook, even though it is currently empty.
5. **`eo.web.webview.ACA001SF.ACA001SFBean` and `ACA001SFLogic`** - read these together to understand the page-specific module that appears to back the `ACA001SF` view.

The most useful mindset here is to follow the configuration first and the code second. Because the repository appears to rely heavily on external XML wiring, the class names and package paths are part of the contract.

If you are extending the project, the likely entry points are the filter, listener, and Faces servlet references in the deployment descriptors. If you are investigating behavior, check whether the missing logic lives in configuration or in another source tree rather than assuming it should be present in these Java files.