Mongrel: the eXist-db MongoDB extension
The Mongrel eXist-db extension provides xquery extension functions to access MongoDB database functions.
In addition to "regular" MongoDB operations the extension also provides GridFS functions to manage arbitrary sized documents that are stored in MongoDB.
Extensive documentation can be found on the Wiki. Downloads and release notes are on the GitHub Releases page.
Mongrel 0.6.1 requires eXist-db 3.0 (or newer).
The function namespaces are http://expath.org/ns/mongo and http://expath.org/ns/mongo/gridfs
This version supports XQuery 3.1 JSON structures.
The extension is based on the 2.x version of the official mongodb driver
The work is released AS-IS under the LGPL license.
Support on this extension is provided by weXsol, eXist Solutions GmbH, and Evolved Binary.