# Javax / Faces / Webapp

## Overview

The `javax.faces.webapp` package appears to provide the web-layer entry point for JavaServer Faces integration. In this fixture, the package is centered on `FacesServlet`, which is the servlet hook referenced by the application deployment descriptors. That makes this module the boundary between the servlet container and the Faces runtime, even though the source here is intentionally minimal.

## Key Classes and Interfaces

### [FacesServlet](full-fixture-codebase/src/java/javax/faces/webapp/FacesServlet.java:2)

`FacesServlet` is the only class present in this package. The implementation in this fixture is empty, but its role is still important: it serves as the servlet type that `web.xml` and `web-full.xml` point to when wiring the application into the container.

Because the class has no methods or fields in the captured source, there is no internal request-processing logic to describe here. In a fuller implementation, this would typically be the servlet responsible for receiving incoming JSF requests and delegating them into the Faces lifecycle. Based on the references in the deployment descriptors, this class is treated as an integration point rather than a general-purpose utility.

## How It Works

At a high level, the flow is configuration-driven:

1. The application deployment descriptors reference `FacesServlet`.
2. The servlet container uses that class name to locate and instantiate the servlet.
3. Requests mapped to that servlet would be routed through the Faces web entry point.

In this fixture, the class body is empty, so the code itself does not define the request flow. The important design signal is the external wiring: the package exists so the web application can declare a Faces servlet entry point in XML.

## Data Model

There are no data model, DTO, or entity classes in this package.

## Dependencies and Integration

This module is tightly integrated with the application deployment descriptors:

- [web.xml](web.xml) uses `FacesServlet`
- [web-full.xml](web-full.xml) uses `FacesServlet`

That means the package is not consumed through helper classes or internal APIs in this fixture. Instead, it is consumed through container configuration, which is typical for servlet-based frameworks.

## Notes for Developers

- `FacesServlet` is the package’s primary extension point in this fixture.
- The source file is intentionally minimal, so behavior is defined externally by container configuration rather than by local implementation details.
- When changing servlet wiring, keep the XML references in sync with the class name and package path.

## Relationships

```mermaid
flowchart TD
Module["javax.faces.webapp"] --> FacesServlet["FacesServlet"]
WebXml["web.xml"] --> FacesServlet
WebFullXml["web-full.xml"] --> FacesServlet
```