Apache !CouchDB is a document-oriented database that can be queried and indexed in a !MapReduce fashion using JavaScript. With Emacs special file name handling, we can open, edit and save !CouchDB document as normal file.

* [[couchdb-document.el]] implement basic file operation on a couchdb document, depend on below "org-json.el".
* [[org-json.el]] translate a couchdb document(json object) to/from a org file.
* [[couchdb-document-text.el]] use couchdb to save text files.

Filename to document map: 
  
  "/couchdb:host#port:/db/docid" => document with 'docid' in data base 'db' of couchdb server 'host:port'.
  "/couchdb:host:/db/docid"      => 'port' is optional if it is `couchdb-document-port'(default 5984).
  "/couchdb:/db/docid"           => 'host' is also optional if it is `couchdb-document-host'(default '127.0.0.1).


Usage of couchdb-document-text

  (require 'couchdb-document-text)
  (find-file "/couchdb:/db/aaa.txt")
  ;; write something, then C-x C-s

  ;; or 
  (find-file "/couchdb:/db/xxx.org.gpg")
  ;; write something, then C-x C-s

If couchdb-document.el is loaded before tramp.el, `file-name-handler-alist' will then changed by tramp and Emacs will try to use tramp to load couchdb document, so it's necessary to call `couchdb-document-register-file-name-handler' after load tramp.el, a typical config will looks like below:

  (require 'tramp)
  (when (featurep 'couchdb-document)
    (couchdb-document-register-file-name-handler))


Unsupportted features:
* revision: alway open the last revision of the document.
* attatchment: attatchment are not support, using `find-file' to open a couchdb document will cause unexpected result.
* dired: `insert-directory' of couchdb document are not implemented, so it not works with dired.