Description:

Catacomb is a WebDAV repository module for use with the Apache WebDAV module,
mod_dav. Apache mod_dav parses WebDAV and DeltaV protocol requests into
operations on a repository providing persistent storage of resources and their
properties. The default repository for mod_dav is provided by a separate
module, mod_dav_fs, which stores resource bodies as files in the filesystem,
and stores properties in a (G)DBM database.

Catacomb provides a replacement for mod_dav_fs called mod_dav_repos that stores
resources and their properties in a relational database (MySQL). The primary
advantage of this approach is the searching capabilities of the database are
used to implement the DASL protocol. Additionally, the database allows
straightforward implementation of the versioning capabilities of the DeltaV
protocol.

By shifting to relational database technology, Catacomb is a platform that
contains important aspects of typical document management systems: the ability
to store large numbers of documents, and search over their metadata.
Furthermore, it is possible (via source code modification) to change the set of
predefined properties stored in the main schema of the relational database.
Properties in the main schema are faster to search.

This project is the first open source implementation of the DASL and
DeltaV(linear versioning) protocols. We plan on tracking the evolution of this
protocol.