couchrest_model/lib/couchrest/core/database.rb

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require 'cgi'
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require "base64"
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module CouchRest
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class Database
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attr_reader :server, :host, :name, :root
def initialize server, name
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@name = name
@server = server
@host = server.uri
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@root = "#{host}/#{name}"
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end
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def to_s
@root
end
def info
CouchRest.get @root
end
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def documents params = nil
url = CouchRest.paramify_url "#{@root}/_all_docs", params
CouchRest.get url
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end
def temp_view funcs, params = nil
url = CouchRest.paramify_url "#{@root}/_temp_view", params
JSON.parse(RestClient.post(url, funcs.to_json, {"Content-Type" => 'application/json'}))
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end
def view name, params = nil
url = CouchRest.paramify_url "#{@root}/_view/#{name}", params
CouchRest.get url
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end
# experimental
def search params = nil
url = CouchRest.paramify_url "#{@root}/_search", params
CouchRest.get url
end
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# experimental
def action action, params = nil
url = CouchRest.paramify_url "#{@root}/_action/#{action}", params
CouchRest.get url
end
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def get id
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slug = CGI.escape(id)
CouchRest.get "#{@root}/#{slug}"
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end
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def fetch_attachment doc, name
doc = CGI.escape(doc)
name = CGI.escape(name)
RestClient.get "#{@root}/#{doc}/#{name}"
end
# PUT or POST depending on presence of _id attribute
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def save doc
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if doc['_attachments']
doc['_attachments'] = encode_attachments(doc['_attachments'])
end
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if doc['_id']
slug = CGI.escape(doc['_id'])
CouchRest.put "#{@root}/#{slug}", doc
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else
begin
slug = doc['_id'] = @server.next_uuid
CouchRest.put "#{@root}/#{slug}", doc
rescue #old version of couchdb
CouchRest.post @root, doc
end
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end
end
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def bulk_save docs
ids, noids = docs.partition{|d|d['_id']}
uuid_count = [noids.length, @server.uuid_batch_count].max
noids.each do |doc|
nextid = @server.next_uuid(uuid_count) rescue nil
doc['_id'] = nextid if nextid
end
CouchRest.post "#{@root}/_bulk_docs", {:docs => docs}
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end
def delete doc
slug = CGI.escape(doc['_id'])
CouchRest.delete "#{@root}/#{slug}?rev=#{doc['_rev']}"
end
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def delete!
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CouchRest.delete @root
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end
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private
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def encode_attachments attachments
attachments.each do |k,v|
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next if v['stub']
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v['data'] = base64(v['data'])
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end
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attachments
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end
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def base64 data
Base64.encode64(data).gsub(/\s/,'')
end
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end
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end