100 lines
3.2 KiB
Ruby
100 lines
3.2 KiB
Ruby
|
class CouchRest
|
||
|
|
|
||
|
|
module Commands
|
||
|
|
|
||
|
|
module Push
|
||
|
|
|
||
|
|
def self.run(options)
|
||
|
|
directory = options[:directory]
|
||
|
|
database = options[:trailing_args].first
|
||
|
|
|
||
|
|
fm = CouchRest::FileManager.new(database)
|
||
|
|
fm.loud = options[:loud]
|
||
|
|
puts "Pushing views from directory #{directory} to database #{fm.db}"
|
||
|
|
fm.push_views(directory)
|
||
|
|
end
|
||
|
|
|
||
|
|
def self.help
|
||
|
|
helpstring = <<-GEN
|
||
|
|
|
||
|
|
== Pushing views with Couchview ==
|
||
|
|
|
||
|
|
Usage: couchview push directory dbname
|
||
|
|
|
||
|
|
Couchview expects a specific filesystem layout for your CouchDB views (see
|
||
|
|
example below). It also supports advanced features like inlining of library
|
||
|
|
code (so you can keep DRY) as well as avoiding unnecessary document
|
||
|
|
modification.
|
||
|
|
|
||
|
|
Couchview also solves a problem with CouchDB's view API, which only provides
|
||
|
|
access to the final reduce side of any views which have both a map and a
|
||
|
|
reduce function defined. The intermediate map results are often useful for
|
||
|
|
development and production. CouchDB is smart enough to reuse map indexes for
|
||
|
|
functions duplicated across views within the same design document.
|
||
|
|
|
||
|
|
For views with a reduce function defined, Couchview creates both a reduce view
|
||
|
|
and a map-only view, so that you can browse and query the map side as well as
|
||
|
|
the reduction, with no performance penalty.
|
||
|
|
|
||
|
|
== Example ==
|
||
|
|
|
||
|
|
couchview push foo-project/bar-views baz-database
|
||
|
|
|
||
|
|
This will push the views defined in foo-project/bar-views into a database
|
||
|
|
called baz-database. Couchview expects the views to be defined in files with
|
||
|
|
names like:
|
||
|
|
|
||
|
|
foo-project/bar-views/my-design/viewname-map.js
|
||
|
|
foo-project/bar-views/my-design/viewname-reduce.js
|
||
|
|
foo-project/bar-views/my-design/noreduce-map.js
|
||
|
|
|
||
|
|
Pushed to => http://localhost:5984/baz-database/_design/my-design
|
||
|
|
|
||
|
|
And the design document:
|
||
|
|
{
|
||
|
|
"views" : {
|
||
|
|
"viewname-map" : {
|
||
|
|
"map" : "### contents of view-name-map.js ###"
|
||
|
|
},
|
||
|
|
"viewname-reduce" : {
|
||
|
|
"map" : "### contents of view-name-map.js ###",
|
||
|
|
"reduce" : "### contents of view-name-reduce.js ###"
|
||
|
|
},
|
||
|
|
"noreduce-map" : {
|
||
|
|
"map" : "### contents of noreduce-map.js ###"
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
Couchview will create a design document for each subdirectory of the views
|
||
|
|
directory specified on the command line.
|
||
|
|
|
||
|
|
== Library Inlining ==
|
||
|
|
|
||
|
|
Couchview can optionally inline library code into your views so you only have
|
||
|
|
to maintain it in one place. It looks for any files named lib.* in your
|
||
|
|
design-doc directory (for doc specific libs) and in the parent views directory
|
||
|
|
(for project global libs). These libraries are only inserted into views which
|
||
|
|
include the text
|
||
|
|
|
||
|
|
//include-lib
|
||
|
|
|
||
|
|
or
|
||
|
|
|
||
|
|
#include-lib
|
||
|
|
|
||
|
|
Couchview is a result of scratching my own itch. I'd be happy to make it more
|
||
|
|
general, so please contact me at jchris@grabb.it if you'd like to see anything
|
||
|
|
added or changed.
|
||
|
|
|
||
|
|
GEN
|
||
|
|
helpstring.gsub(/^ /, '')
|
||
|
|
end
|
||
|
|
|
||
|
|
end
|
||
|
|
|
||
|
|
|
||
|
|
end
|
||
|
|
|
||
|
|
end
|