Started the refactoring work on couchrest.
* A server can have multiple defined available databases set to be used by documents (think DM repos) * A server can have a default database so documents can easily share the same db connection * Let a document class have a default database to use * Give access to a document uri * extracted some of the document features to a mixin
This commit is contained in:
Matt Aimonetti
Chris Anderson
parent
427122c98a
commit
d9fe6ba374
7 changed files with 392 additions and 240 deletions
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@ -37,6 +37,8 @@ module CouchRest
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autoload :FileManager, 'couchrest/helper/file_manager'
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autoload :Streamer, 'couchrest/helper/streamer'
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require File.join(File.dirname(__FILE__), 'couchrest', 'mixins')
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# The CouchRest module methods handle the basic JSON serialization
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# and deserialization, as well as query parameters. The module also includes
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# some helpers for tasks like instantiating a new Database or Server instance.
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@ -14,47 +14,20 @@ module CouchRest
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end
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class Document < Response
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include CouchRest::Mixins::Views
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attr_accessor :database
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# alias for self['_id']
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def id
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self['_id']
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@@database = nil
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# override the CouchRest::Model-wide default_database
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# This is not a thread safe operation, do not change the model
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# database at runtime.
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def self.use_database(db)
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@@database = db
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end
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# alias for self['_rev']
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def rev
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self['_rev']
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end
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# returns true if the document has never been saved
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def new_document?
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!rev
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end
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# Saves the document to the db using create or update. Also runs the :save
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# callbacks. Sets the <tt>_id</tt> and <tt>_rev</tt> fields based on
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# CouchDB's response.
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# If <tt>bulk</tt> is <tt>true</tt> (defaults to false) the document is cached for bulk save.
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def save(bulk = false)
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raise ArgumentError, "doc.database required for saving" unless database
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result = database.save_doc self, bulk
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result['ok']
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end
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# Deletes the document from the database. Runs the :delete callbacks.
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# Removes the <tt>_id</tt> and <tt>_rev</tt> fields, preparing the
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# document to be saved to a new <tt>_id</tt>.
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# If <tt>bulk</tt> is <tt>true</tt> (defaults to false) the document won't
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# actually be deleted from the db until bulk save.
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def destroy(bulk = false)
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raise ArgumentError, "doc.database required to destroy" unless database
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result = database.delete_doc(self, bulk)
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if result['ok']
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self['_rev'] = nil
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self['_id'] = nil
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end
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result['ok']
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def self.database
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@@database
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end
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# copies the document to a new id. If the destination id currently exists, a rev must be provided.
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@ -75,6 +48,23 @@ module CouchRest
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result['ok']
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end
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# Returns the CouchDB uri for the document
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def uri(append_rev = false)
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return nil if new_document?
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couch_uri = "http://#{database.uri}/#{CGI.escape(id)}"
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if append_rev == true
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couch_uri << "?rev=#{rev}"
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elsif append_rev.kind_of?(Integer)
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couch_uri << "?rev=#{append_rev}"
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end
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couch_uri
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end
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# Returns the document's database
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def database
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@database || self.class.database
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end
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# saves an attachment directly to couchdb
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def put_attachment(name, file, options={})
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raise ArgumentError, "doc.database required to put_attachment" unless database
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@ -97,6 +87,5 @@ module CouchRest
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result['ok']
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end
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end
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end
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@ -1,25 +1,62 @@
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module CouchRest
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class Server
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attr_accessor :uri, :uuid_batch_count
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def initialize server = 'http://127.0.0.1:5984', uuid_batch_count = 1000
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attr_accessor :uri, :uuid_batch_count, :available_databases
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def initialize(server = 'http://127.0.0.1:5984', uuid_batch_count = 1000)
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@uri = server
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@uuid_batch_count = uuid_batch_count
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end
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# List all databases on the server
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# Lists all "available" databases.
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# An available database, is a database that was specified
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# as avaiable by your code.
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# It allows to define common databases to use and reuse in your code
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def available_databases
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@available_databases ||= {}
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end
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# Adds a new available database and create it unless it already exists
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#
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# Example:
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#
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# @couch = CouchRest::Server.new
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# @couch.define_available_database(:default, "tech-blog")
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#
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def define_available_database(reference, db_name, create_unless_exists = true)
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available_databases[reference.to_sym] = create_unless_exists ? database!(db_name) : database(db_name)
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end
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# Checks that a database is set as available
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#
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# Example:
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#
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# @couch.available_database?(:default)
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#
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def available_database?(ref_or_name)
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ref_or_name.is_a?(Symbol) ? available_databases.keys.include?(ref_or_name) : available_databases.values.map{|db| db.name}.include?(ref_or_name)
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end
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def default_database=(name, create_unless_exists = true)
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define_available_database(:default, name, create_unless_exists = true)
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end
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def default_database
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available_databases[:default]
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end
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# Lists all databases on the server
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def databases
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CouchRest.get "#{@uri}/_all_dbs"
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end
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# Returns a CouchRest::Database for the given name
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def database name
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def database(name)
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CouchRest::Database.new(self, name)
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end
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# Creates the database if it doesn't exist
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def database! name
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def database!(name)
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create_db(name) rescue nil
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database name
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database(name)
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end
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# GET the welcome message
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@ -28,9 +65,9 @@ module CouchRest
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end
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# Create a database
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def create_db name
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def create_db(name)
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CouchRest.put "#{@uri}/#{name}"
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database name
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database(name)
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end
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# Restart the CouchDB instance
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@ -39,7 +76,7 @@ module CouchRest
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end
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# Retrive an unused UUID from CouchDB. Server instances manage caching a list of unused UUIDs.
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def next_uuid count = @uuid_batch_count
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def next_uuid(count = @uuid_batch_count)
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@uuids ||= []
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if @uuids.empty?
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@uuids = CouchRest.post("#{@uri}/_uuids?count=#{count}")["uuids"]
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3
lib/couchrest/mixins.rb
Normal file
3
lib/couchrest/mixins.rb
Normal file
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@ -0,0 +1,3 @@
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mixins_dir = File.join(File.dirname(__FILE__), 'mixins')
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require File.join(mixins_dir, 'views')
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59
lib/couchrest/mixins/views.rb
Normal file
59
lib/couchrest/mixins/views.rb
Normal file
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@ -0,0 +1,59 @@
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module CouchRest
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module Mixins
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module Views
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# alias for self['_id']
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def id
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self['_id']
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end
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# alias for self['_rev']
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def rev
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self['_rev']
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end
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# returns true if the document has never been saved
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def new_document?
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!rev
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end
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# Saves the document to the db using create or update. Also runs the :save
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# callbacks. Sets the <tt>_id</tt> and <tt>_rev</tt> fields based on
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# CouchDB's response.
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# If <tt>bulk</tt> is <tt>true</tt> (defaults to false) the document is cached for bulk save.
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def save(bulk = false)
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raise ArgumentError, "doc.database required for saving" unless database
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result = database.save_doc self, bulk
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result['ok']
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end
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# Deletes the document from the database. Runs the :delete callbacks.
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# Removes the <tt>_id</tt> and <tt>_rev</tt> fields, preparing the
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# document to be saved to a new <tt>_id</tt>.
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# If <tt>bulk</tt> is <tt>true</tt> (defaults to false) the document won't
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# actually be deleted from the db until bulk save.
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def destroy(bulk = false)
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raise ArgumentError, "doc.database required to destroy" unless database
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result = database.delete_doc(self, bulk)
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if result['ok']
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self['_rev'] = nil
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self['_id'] = nil
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end
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result['ok']
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end
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def copy(dest)
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raise ArgumentError, "doc.database required to copy" unless database
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result = database.copy_doc(self, dest)
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result['ok']
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end
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def move(dest)
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raise ArgumentError, "doc.database required to copy" unless database
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result = database.move_doc(self, dest)
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result['ok']
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end
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end
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end
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end
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@ -1,213 +1,241 @@
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require File.dirname(__FILE__) + '/../../spec_helper'
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describe CouchRest::Document, "[]=" do
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before(:each) do
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@doc = CouchRest::Document.new
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end
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it "should work" do
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@doc["enamel"].should == nil
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@doc["enamel"] = "Strong"
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@doc["enamel"].should == "Strong"
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end
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it "[]= should convert to string" do
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@doc["enamel"].should == nil
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@doc[:enamel] = "Strong"
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@doc["enamel"].should == "Strong"
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end
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it "should read as a string" do
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@doc[:enamel] = "Strong"
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@doc[:enamel].should == "Strong"
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end
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end
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class Video < CouchRest::Document; end
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describe CouchRest::Document, "new" do
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before(:each) do
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@doc = CouchRest::Document.new("key" => [1,2,3], :more => "values")
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end
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it "should create itself from a Hash" do
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@doc["key"].should == [1,2,3]
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@doc["more"].should == "values"
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end
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it "should not have rev and id" do
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@doc.rev.should be_nil
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@doc.id.should be_nil
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end
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it "should freak out when saving without a database" do
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lambda{@doc.save}.should raise_error(ArgumentError)
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end
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end
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# move to database spec
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describe CouchRest::Document, "saving using a database" do
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describe CouchRest::Document do
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before(:all) do
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@doc = CouchRest::Document.new("key" => [1,2,3], :more => "values")
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@db = reset_test_db!
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@resp = @db.save_doc(@doc)
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end
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it "should apply the database" do
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@doc.database.should == @db
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end
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it "should get id and rev" do
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@doc.id.should == @resp["id"]
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@doc.rev.should == @resp["rev"]
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end
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end
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describe CouchRest::Document, "bulk saving" do
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before :all do
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@db = reset_test_db!
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@couch = CouchRest.new
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@db = @couch.database!(TESTDB)
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end
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it "should use the document bulk save cache" do
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doc = CouchRest::Document.new({"_id" => "bulkdoc", "val" => 3})
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doc.database = @db
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doc.save(true)
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lambda { doc.database.get(doc["_id"]) }.should raise_error(RestClient::ResourceNotFound)
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doc.database.bulk_save
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doc.database.get(doc["_id"])["val"].should == doc["val"]
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end
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end
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describe "getting from a database" do
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before(:all) do
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@db = reset_test_db!
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@resp = @db.save_doc({
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"key" => "value"
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})
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@doc = @db.get @resp['id']
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end
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it "should return a document" do
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@doc.should be_an_instance_of(CouchRest::Document)
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end
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it "should have a database" do
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@doc.database.should == @db
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end
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it "should be saveable and resavable" do
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@doc["more"] = "keys"
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@doc.save
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@db.get(@resp['id'])["more"].should == "keys"
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@doc["more"] = "these keys"
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@doc.save
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@db.get(@resp['id'])["more"].should == "these keys"
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end
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end
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describe "destroying a document from a db" do
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before(:all) do
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@db = reset_test_db!
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@resp = @db.save_doc({
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"key" => "value"
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})
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@doc = @db.get @resp['id']
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end
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it "should make it disappear" do
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@doc.destroy
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lambda{@db.get @resp['id']}.should raise_error
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end
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it "should error when there's no db" do
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@doc = CouchRest::Document.new("key" => [1,2,3], :more => "values")
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lambda{@doc.destroy}.should raise_error(ArgumentError)
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end
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end
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describe "destroying a document from a db using bulk save" do
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before(:all) do
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@db = reset_test_db!
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@resp = @db.save_doc({
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"key" => "value"
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})
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@doc = @db.get @resp['id']
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end
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it "should defer actual deletion" do
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@doc.destroy(true)
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@doc['_id'].should == nil
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@doc['_rev'].should == nil
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lambda{@db.get @resp['id']}.should_not raise_error
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@db.bulk_save
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lambda{@db.get @resp['id']}.should raise_error
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end
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end
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describe "copying a document" do
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before :each do
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@db = reset_test_db!
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@resp = @db.save_doc({'key' => 'value'})
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@docid = 'new-location'
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@doc = @db.get(@resp['id'])
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end
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describe "to a new location" do
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describe "[]=" do
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before(:each) do
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@doc = CouchRest::Document.new
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end
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it "should work" do
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@doc.copy @docid
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newdoc = @db.get(@docid)
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newdoc['key'].should == 'value'
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@doc["enamel"].should == nil
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@doc["enamel"] = "Strong"
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@doc["enamel"].should == "Strong"
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end
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it "should fail without a database" do
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lambda{CouchRest::Document.new({"not"=>"a real doc"}).copy}.should raise_error(ArgumentError)
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it "[]= should convert to string" do
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@doc["enamel"].should == nil
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@doc[:enamel] = "Strong"
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@doc["enamel"].should == "Strong"
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end
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it "should read as a string" do
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@doc[:enamel] = "Strong"
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@doc[:enamel].should == "Strong"
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end
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end
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describe "to an existing location" do
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before :each do
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@db.save_doc({'_id' => @docid, 'will-exist' => 'here'})
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end
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it "should fail without a rev" do
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lambda{@doc.copy @docid}.should raise_error(RestClient::RequestFailed)
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end
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it "should succeed with a rev" do
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@to_be_overwritten = @db.get(@docid)
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@doc.copy "#{@docid}?rev=#{@to_be_overwritten['_rev']}"
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newdoc = @db.get(@docid)
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newdoc['key'].should == 'value'
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end
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it "should succeed given the doc to overwrite" do
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@to_be_overwritten = @db.get(@docid)
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@doc.copy @to_be_overwritten
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newdoc = @db.get(@docid)
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newdoc['key'].should == 'value'
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end
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end
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end
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describe "MOVE existing document" do
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before :each do
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@db = reset_test_db!
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@resp = @db.save_doc({'key' => 'value'})
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@docid = 'new-location'
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@doc = @db.get(@resp['id'])
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end
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describe "to a new location" do
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it "should work" do
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@doc.move @docid
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newdoc = @db.get(@docid)
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newdoc['key'].should == 'value'
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lambda {@db.get(@resp['id'])}.should raise_error(RestClient::ResourceNotFound)
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describe "default database" do
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it "should be set using use_database on the model" do
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Video.new.database.should be_nil
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Video.use_database @db
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Video.new.database.should == @db
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Video.use_database nil
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end
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it "should fail without a database" do
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lambda{CouchRest::Document.new({"not"=>"a real doc"}).move}.should raise_error(ArgumentError)
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lambda{CouchRest::Document.new({"_id"=>"not a real doc"}).move}.should raise_error(ArgumentError)
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it "should be overwritten by instance" do
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db = @couch.database('test')
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article = Video.new
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article.database.should be_nil
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article.database = db
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article.database.should_not be_nil
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||||
article.database.should == db
|
||||
end
|
||||
end
|
||||
describe "to an existing location" do
|
||||
|
||||
describe "new" do
|
||||
before(:each) do
|
||||
@doc = CouchRest::Document.new("key" => [1,2,3], :more => "values")
|
||||
end
|
||||
it "should create itself from a Hash" do
|
||||
@doc["key"].should == [1,2,3]
|
||||
@doc["more"].should == "values"
|
||||
end
|
||||
it "should not have rev and id" do
|
||||
@doc.rev.should be_nil
|
||||
@doc.id.should be_nil
|
||||
end
|
||||
it "should freak out when saving without a database" do
|
||||
lambda{@doc.save}.should raise_error(ArgumentError)
|
||||
end
|
||||
end
|
||||
|
||||
# move to database spec
|
||||
describe "saving using a database" do
|
||||
before(:all) do
|
||||
@doc = CouchRest::Document.new("key" => [1,2,3], :more => "values")
|
||||
@db = reset_test_db!
|
||||
@resp = @db.save_doc(@doc)
|
||||
end
|
||||
it "should apply the database" do
|
||||
@doc.database.should == @db
|
||||
end
|
||||
it "should get id and rev" do
|
||||
@doc.id.should == @resp["id"]
|
||||
@doc.rev.should == @resp["rev"]
|
||||
end
|
||||
end
|
||||
|
||||
describe "bulk saving" do
|
||||
before :all do
|
||||
@db = reset_test_db!
|
||||
end
|
||||
|
||||
it "should use the document bulk save cache" do
|
||||
doc = CouchRest::Document.new({"_id" => "bulkdoc", "val" => 3})
|
||||
doc.database = @db
|
||||
doc.save(true)
|
||||
lambda { doc.database.get(doc["_id"]) }.should raise_error(RestClient::ResourceNotFound)
|
||||
doc.database.bulk_save
|
||||
doc.database.get(doc["_id"])["val"].should == doc["val"]
|
||||
end
|
||||
end
|
||||
|
||||
describe "getting from a database" do
|
||||
before(:all) do
|
||||
@db = reset_test_db!
|
||||
@resp = @db.save_doc({
|
||||
"key" => "value"
|
||||
})
|
||||
@doc = @db.get @resp['id']
|
||||
end
|
||||
it "should return a document" do
|
||||
@doc.should be_an_instance_of(CouchRest::Document)
|
||||
end
|
||||
it "should have a database" do
|
||||
@doc.database.should == @db
|
||||
end
|
||||
it "should be saveable and resavable" do
|
||||
@doc["more"] = "keys"
|
||||
@doc.save
|
||||
@db.get(@resp['id'])["more"].should == "keys"
|
||||
@doc["more"] = "these keys"
|
||||
@doc.save
|
||||
@db.get(@resp['id'])["more"].should == "these keys"
|
||||
end
|
||||
end
|
||||
|
||||
describe "destroying a document from a db" do
|
||||
before(:all) do
|
||||
@db = reset_test_db!
|
||||
@resp = @db.save_doc({
|
||||
"key" => "value"
|
||||
})
|
||||
@doc = @db.get @resp['id']
|
||||
end
|
||||
it "should make it disappear" do
|
||||
@doc.destroy
|
||||
lambda{@db.get @resp['id']}.should raise_error
|
||||
end
|
||||
it "should error when there's no db" do
|
||||
@doc = CouchRest::Document.new("key" => [1,2,3], :more => "values")
|
||||
lambda{@doc.destroy}.should raise_error(ArgumentError)
|
||||
end
|
||||
end
|
||||
|
||||
|
||||
describe "destroying a document from a db using bulk save" do
|
||||
before(:all) do
|
||||
@db = reset_test_db!
|
||||
@resp = @db.save_doc({
|
||||
"key" => "value"
|
||||
})
|
||||
@doc = @db.get @resp['id']
|
||||
end
|
||||
it "should defer actual deletion" do
|
||||
@doc.destroy(true)
|
||||
@doc['_id'].should == nil
|
||||
@doc['_rev'].should == nil
|
||||
lambda{@db.get @resp['id']}.should_not raise_error
|
||||
@db.bulk_save
|
||||
lambda{@db.get @resp['id']}.should raise_error
|
||||
end
|
||||
end
|
||||
|
||||
describe "copying a document" do
|
||||
before :each do
|
||||
@db.save_doc({'_id' => @docid, 'will-exist' => 'here'})
|
||||
@db = reset_test_db!
|
||||
@resp = @db.save_doc({'key' => 'value'})
|
||||
@docid = 'new-location'
|
||||
@doc = @db.get(@resp['id'])
|
||||
end
|
||||
it "should fail without a rev" do
|
||||
lambda{@doc.move @docid}.should raise_error(RestClient::RequestFailed)
|
||||
lambda{@db.get(@resp['id'])}.should_not raise_error
|
||||
describe "to a new location" do
|
||||
it "should work" do
|
||||
@doc.copy @docid
|
||||
newdoc = @db.get(@docid)
|
||||
newdoc['key'].should == 'value'
|
||||
end
|
||||
it "should fail without a database" do
|
||||
lambda{CouchRest::Document.new({"not"=>"a real doc"}).copy}.should raise_error(ArgumentError)
|
||||
end
|
||||
end
|
||||
it "should succeed with a rev" do
|
||||
@to_be_overwritten = @db.get(@docid)
|
||||
@doc.move "#{@docid}?rev=#{@to_be_overwritten['_rev']}"
|
||||
newdoc = @db.get(@docid)
|
||||
newdoc['key'].should == 'value'
|
||||
lambda {@db.get(@resp['id'])}.should raise_error(RestClient::ResourceNotFound)
|
||||
describe "to an existing location" do
|
||||
before :each do
|
||||
@db.save_doc({'_id' => @docid, 'will-exist' => 'here'})
|
||||
end
|
||||
it "should fail without a rev" do
|
||||
lambda{@doc.copy @docid}.should raise_error(RestClient::RequestFailed)
|
||||
end
|
||||
it "should succeed with a rev" do
|
||||
@to_be_overwritten = @db.get(@docid)
|
||||
@doc.copy "#{@docid}?rev=#{@to_be_overwritten['_rev']}"
|
||||
newdoc = @db.get(@docid)
|
||||
newdoc['key'].should == 'value'
|
||||
end
|
||||
it "should succeed given the doc to overwrite" do
|
||||
@to_be_overwritten = @db.get(@docid)
|
||||
@doc.copy @to_be_overwritten
|
||||
newdoc = @db.get(@docid)
|
||||
newdoc['key'].should == 'value'
|
||||
end
|
||||
end
|
||||
it "should succeed given the doc to overwrite" do
|
||||
@to_be_overwritten = @db.get(@docid)
|
||||
@doc.move @to_be_overwritten
|
||||
newdoc = @db.get(@docid)
|
||||
newdoc['key'].should == 'value'
|
||||
lambda {@db.get(@resp['id'])}.should raise_error(RestClient::ResourceNotFound)
|
||||
end
|
||||
|
||||
describe "MOVE existing document" do
|
||||
before :each do
|
||||
@db = reset_test_db!
|
||||
@resp = @db.save_doc({'key' => 'value'})
|
||||
@docid = 'new-location'
|
||||
@doc = @db.get(@resp['id'])
|
||||
end
|
||||
describe "to a new location" do
|
||||
it "should work" do
|
||||
@doc.move @docid
|
||||
newdoc = @db.get(@docid)
|
||||
newdoc['key'].should == 'value'
|
||||
lambda {@db.get(@resp['id'])}.should raise_error(RestClient::ResourceNotFound)
|
||||
end
|
||||
it "should fail without a database" do
|
||||
lambda{CouchRest::Document.new({"not"=>"a real doc"}).move}.should raise_error(ArgumentError)
|
||||
lambda{CouchRest::Document.new({"_id"=>"not a real doc"}).move}.should raise_error(ArgumentError)
|
||||
end
|
||||
end
|
||||
describe "to an existing location" do
|
||||
before :each do
|
||||
@db.save_doc({'_id' => @docid, 'will-exist' => 'here'})
|
||||
end
|
||||
it "should fail without a rev" do
|
||||
lambda{@doc.move @docid}.should raise_error(RestClient::RequestFailed)
|
||||
lambda{@db.get(@resp['id'])}.should_not raise_error
|
||||
end
|
||||
it "should succeed with a rev" do
|
||||
@to_be_overwritten = @db.get(@docid)
|
||||
@doc.move "#{@docid}?rev=#{@to_be_overwritten['_rev']}"
|
||||
newdoc = @db.get(@docid)
|
||||
newdoc['key'].should == 'value'
|
||||
lambda {@db.get(@resp['id'])}.should raise_error(RestClient::ResourceNotFound)
|
||||
end
|
||||
it "should succeed given the doc to overwrite" do
|
||||
@to_be_overwritten = @db.get(@docid)
|
||||
@doc.move @to_be_overwritten
|
||||
newdoc = @db.get(@docid)
|
||||
newdoc['key'].should == 'value'
|
||||
lambda {@db.get(@resp['id'])}.should raise_error(RestClient::ResourceNotFound)
|
||||
end
|
||||
end
|
||||
end
|
||||
end
|
||||
|
|
|
|||
34
spec/couchrest/core/server_spec.rb
Normal file
34
spec/couchrest/core/server_spec.rb
Normal file
|
|
@ -0,0 +1,34 @@
|
|||
require File.dirname(__FILE__) + '/../../spec_helper'
|
||||
|
||||
describe CouchRest::Server do
|
||||
|
||||
before(:all) do
|
||||
@couch = CouchRest::Server.new
|
||||
end
|
||||
|
||||
after(:all) do
|
||||
@couch.available_databases.each do |ref, db|
|
||||
db.delete!
|
||||
end
|
||||
end
|
||||
|
||||
describe "available databases" do
|
||||
it "should let you add more databases" do
|
||||
@couch.available_databases.should be_empty
|
||||
@couch.define_available_database(:default, "cr-server-test-db")
|
||||
@couch.available_databases.keys.should include(:default)
|
||||
end
|
||||
|
||||
it "should verify that a database is available" do
|
||||
@couch.available_database?(:default).should be_true
|
||||
@couch.available_database?("cr-server-test-db").should be_true
|
||||
@couch.available_database?(:matt).should be_false
|
||||
end
|
||||
|
||||
it "should let you set a default database" do
|
||||
@couch.default_database = 'cr-server-test-default-db'
|
||||
@couch.available_database?(:default).should be_true
|
||||
end
|
||||
end
|
||||
|
||||
end
|
||||
Loading…
Reference in a new issue