Sha256: a6c0c4a3f366f3e0056fb443a8c97e427368fc40583b9f3267d168c4d3501cca
Contents?: true
Size: 1.29 KB
Versions: 17
Compression:
Stored size: 1.29 KB
Contents
module Sequel
# A dataset represents an SQL query, or more generally, an abstract
# set of rows in the database. Datasets
# can be used to create, retrieve, update and delete records.
#
# Query results are always retrieved on demand, so a dataset can be kept
# around and reused indefinitely (datasets never cache results):
#
# my_posts = DB[:posts].filter(:author => 'david') # no records are retrieved
# my_posts.all # records are retrieved
# my_posts.all # records are retrieved again
#
# Most dataset methods return modified copies of the dataset (functional style), so you can
# reuse different datasets to access data:
#
# posts = DB[:posts]
# davids_posts = posts.filter(:author => 'david')
# old_posts = posts.filter('stamp < ?', Date.today - 7)
# davids_old_posts = davids_posts.filter('stamp < ?', Date.today - 7)
#
# Datasets are Enumerable objects, so they can be manipulated using any
# of the Enumerable methods, such as map, inject, etc.
#
# For more information, see the {"Dataset Basics" guide}[link:files/doc/dataset_basics_rdoc.html].
class Dataset
extend Metaprogramming
include Metaprogramming
include Enumerable
end
require(%w"query actions features graph prepared_statements misc mutation sql", 'dataset')
end
Version data entries
17 entries across 17 versions & 2 rubygems