module Sequel::Dataset::NullDataset

  1. lib/sequel/extensions/null_dataset.rb

Methods

Public Instance

  1. columns
  2. delete
  3. each
  4. fetch_rows
  5. insert
  6. truncate
  7. update

Protected Instance

  1. _import

Public Instance methods

columns()

Create a new dataset from the dataset (which won't be nulled) to get the columns if they aren't already cached.

[show source]
   # File lib/sequel/extensions/null_dataset.rb
53 def columns
54   if cols = _columns
55     return cols
56   end
57   self.columns = db.dataset.clone(@opts).columns
58 end
delete()

Return 0 without sending a database query.

[show source]
   # File lib/sequel/extensions/null_dataset.rb
61 def delete
62   0
63 end
each()

Return self without sending a database query, never yielding.

[show source]
   # File lib/sequel/extensions/null_dataset.rb
66 def each
67   self
68 end
fetch_rows(sql)

Return nil without sending a database query, never yielding.

[show source]
   # File lib/sequel/extensions/null_dataset.rb
71 def fetch_rows(sql)
72   nil
73 end
insert(*)

Return nil without sending a database query.

[show source]
   # File lib/sequel/extensions/null_dataset.rb
76 def insert(*)
77   nil
78 end
truncate()

Return nil without sending a database query.

[show source]
   # File lib/sequel/extensions/null_dataset.rb
81 def truncate
82   nil
83 end
update(v=OPTS)

Return 0 without sending a database query.

[show source]
   # File lib/sequel/extensions/null_dataset.rb
86 def update(v=OPTS)
87   0
88 end

Protected Instance methods

_import(columns, values, opts)

Return nil without sending a database query.

[show source]
   # File lib/sequel/extensions/null_dataset.rb
93 def _import(columns, values, opts)
94   nil
95 end