57 lines
1.5 KiB
Ruby
57 lines
1.5 KiB
Ruby
# --
|
|
# Copyright (C) 2008-2010 10gen Inc.
|
|
#
|
|
# 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.
|
|
# ++
|
|
|
|
module Mongo
|
|
|
|
# WARNING: This class is part of a new, experimental GridFS API. Subject to change.
|
|
class Grid
|
|
DEFAULT_FS_NAME = 'fs'
|
|
|
|
def initialize(db, fs_name=DEFAULT_FS_NAME)
|
|
check_params(db)
|
|
@db = db
|
|
@files = @db["#{fs_name}.files"]
|
|
@chunks = @db["#{fs_name}.chunks"]
|
|
|
|
@chunks.create_index([['files_id', Mongo::ASCENDING], ['n', Mongo::ASCENDING]])
|
|
end
|
|
|
|
def put(data, filename, opts={})
|
|
file = GridIO.new(@files, @chunks, filename, 'w', false, opts=opts)
|
|
file.write(data)
|
|
file.close
|
|
file.files_id
|
|
end
|
|
|
|
def get(id)
|
|
GridIO.new(@files, @chunks, nil, 'r', false, :_id => id)
|
|
end
|
|
|
|
def delete(id)
|
|
@files.remove({"_id" => id})
|
|
@chunks.remove({"_id" => id})
|
|
end
|
|
|
|
private
|
|
|
|
def check_params(db)
|
|
if !db.is_a?(Mongo::DB)
|
|
raise MongoArgumentError, "db must be an instance of Mongo::DB."
|
|
end
|
|
end
|
|
end
|
|
end
|