Pass CouchDB version to view server
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Key: COUCHDB-1164
URL: https://issues.apache.org/jira/browse/COUCHDB-1164
Project: CouchDB
Issue Type: New Feature
Components: JavaScript View Server
Reporter: Alexander Shorin
Imagine that I'm developer of some view server. I'd like to create view server
which covers most of CouchDB releases. Each new CouchDB release brings new
features, improvements and API changes, some times backward-incompatible (as
for 0.9->0.10->0.11->0.11.1) . However, I couldn't solve this task due to there
is not way to know about CouchDB version and API that I have to implement. So
there are three ways that I have:
1. develop only "bleeding edge" view server that support only latest version
2. make separate branch per version
3. keep "all in one" and pass version as command line argument.
First one makes to forgot about old releases, second is supporting hell. Last
one is more effective, but requires to keep in mind changing argument on server
update.
So there is actually no way to make great view server such as javascript/erlang
one with "wide" CouchDB versions support. Without that support using and
developing couchapps for ruby/python/clojure/others view servers is quite
unpromising.
This issue could be an improvement of COUCHDB-904 by using next scenario:
CouchDB pass "version" command to view server with additional value of CouchDB
version and excepts that view server return his version back. That would be
something like "version exchange".
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