# Copyright 2008 J. Chris Anderson
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
require "rubygems"
gem 'json'
require 'json'
gem 'rest-client'
require 'rest_client'
$:.unshift File.dirname(__FILE__) unless
$:.include?(File.dirname(__FILE__)) ||
$:.include?(File.expand_path(File.dirname(__FILE__)))
$COUCHREST_DEBUG ||= false
require 'couchrest/monkeypatches'
# = CouchDB, close to the metal
module CouchRest
VERSION = '0.23' unless self.const_defined?("VERSION")
autoload :Server, 'couchrest/core/server'
autoload :Database, 'couchrest/core/database'
autoload :Response, 'couchrest/core/response'
autoload :Document, 'couchrest/core/document'
autoload :Design, 'couchrest/core/design'
autoload :View, 'couchrest/core/view'
autoload :Model, 'couchrest/core/model'
autoload :Pager, 'couchrest/helper/pager'
autoload :FileManager, 'couchrest/helper/file_manager'
autoload :Streamer, 'couchrest/helper/streamer'
autoload :Upgrade, 'couchrest/helper/upgrade'
autoload :ExtendedDocument, 'couchrest/more/extended_document'
autoload :CastedModel, 'couchrest/more/casted_model'
require File.join(File.dirname(__FILE__), 'couchrest', 'mixins')
# The CouchRest module methods handle the basic JSON serialization
# and deserialization, as well as query parameters. The module also includes
# some helpers for tasks like instantiating a new Database or Server instance.
class << self
# extracted from Extlib
#
# Constantize tries to find a declared constant with the name specified
# in the string. It raises a NameError when the name is not in CamelCase
# or is not initialized.
#
# @example
# "Module".constantize #=> Module
# "Class".constantize #=> Class
def constantize(camel_cased_word)
unless /\A(?:::)?([A-Z]\w*(?:::[A-Z]\w*)*)\z/ =~ camel_cased_word
raise NameError, "#{camel_cased_word.inspect} is not a valid constant name!"
end
Object.module_eval("::#{$1}", __FILE__, __LINE__)
end
# extracted from Extlib
#
# Capitalizes the first word and turns underscores into spaces and strips _id.
# Like titleize, this is meant for creating pretty output.
#
# @example
# "employee_salary" #=> "Employee salary"
# "author_id" #=> "Author"
def humanize(lower_case_and_underscored_word)
lower_case_and_underscored_word.to_s.gsub(/_id$/, "").gsub(/_/, " ").capitalize
end
# todo, make this parse the url and instantiate a Server or Database instance
# depending on the specificity.
def new(*opts)
Server.new(*opts)
end
def parse url
case url
when /^http:\/\/(.*)\/(.*)\/(.*)/
host = $1
db = $2
docid = $3
when /^http:\/\/(.*)\/(.*)/
host = $1
db = $2
when /^http:\/\/(.*)/
host = $1
when /(.*)\/(.*)\/(.*)/
host = $1
db = $2
docid = $3
when /(.*)\/(.*)/
host = $1
db = $2
else
db = url
end
db = nil if db && db.empty?
{
:host => host || "127.0.0.1:5984",
:database => db,
:doc => docid
}
end
# set proxy for RestClient to use
def proxy url
RestClient.proxy = url
end
# ensure that a database exists
# creates it if it isn't already there
# returns it after it's been created
def database! url
parsed = parse url
cr = CouchRest.new(parsed[:host])
cr.database!(parsed[:database])
end
def database url
parsed = parse url
cr = CouchRest.new(parsed[:host])
cr.database(parsed[:database])
end
def put(uri, doc = nil)
payload = doc.to_json if doc
begin
JSON.parse(RestClient.put(uri, payload))
rescue Exception => e
if $COUCHREST_DEBUG == true
raise "Error while sending a PUT request #{uri}\npayload: #{payload.inspect}\n#{e}"
else
raise e
end
end
end
def get(uri)
begin
JSON.parse(RestClient.get(uri), :max_nesting => false)
rescue => e
if $COUCHREST_DEBUG == true
raise "Error while sending a GET request #{uri}\n: #{e}"
else
raise e
end
end
end
def post uri, doc = nil
payload = doc.to_json if doc
begin
JSON.parse(RestClient.post(uri, payload))
rescue Exception => e
if $COUCHREST_DEBUG == true
raise "Error while sending a POST request #{uri}\npayload: #{payload.inspect}\n#{e}"
else
raise e
end
end
end
def delete uri
JSON.parse(RestClient.delete(uri))
end
def copy uri, destination
JSON.parse(RestClient.copy(uri, {'Destination' => destination}))
end
def paramify_url url, params = {}
if params && !params.empty?
query = params.collect do |k,v|
v = v.to_json if %w{key startkey endkey}.include?(k.to_s)
"#{k}=#{CGI.escape(v.to_s)}"
end.join("&")
url = "#{url}?#{query}"
end
url
end
end # class << self
end
