Class: Sohm::Set

Inherits:
BasicSet show all
Defined in:
lib/sohm.rb

Direct Known Subclasses

MutableSet

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from BasicSet

#[], #exists?, #ids, #include?, #sample, #size

Methods included from Collection

#each, #empty?, #fetch, #to_a, #to_json

Constructor Details

#initialize(key, namespace, model) ⇒ Set

Returns a new instance of Set.



413
414
415
416
417
 
# File 'lib/sohm.rb', line 413

def initialize(key, namespace, model)
  @key = key
  @namespace = namespace
  @model = model
end

Instance Attribute Details

#key ⇒ Object (readonly)

Returns the value of attribute key.



409
410
411
 
# File 'lib/sohm.rb', line 409

def key
  @key
end

#model ⇒ Object (readonly)

Returns the value of attribute model.



411
412
413
 
# File 'lib/sohm.rb', line 411

def model
  @model
end

#namespace ⇒ Object (readonly)

Returns the value of attribute namespace.



410
411
412
 
# File 'lib/sohm.rb', line 410

def namespace
  @namespace
end

Instance Method Details

#combine(dict) ⇒ Object

Perform an intersection between the existent set and the new set created by the union of the passed filters.

Example:

set = User.find(:status => "active")
set.combine(:name => ["John", "Jane"])

# The result will include all users with active status
# and with names "John" or "Jane".



456
457
458
 
# File 'lib/sohm.rb', line 456

def combine(dict)
  MultiSet.new(namespace, model, key).combine(dict)
end

#except(dict) ⇒ Object

Reduce the set using any number of filters.

Example:

set = User.find(:name => "John")
set.except(:country => "US")

# You can also do it in one line.
User.find(:name => "John").except(:country => "US")



442
443
444
 
# File 'lib/sohm.rb', line 442

def except(dict)
  MultiSet.new(namespace, model, key).except(dict)
end

#find(dict) ⇒ Object

Chain new fiters on an existing set.

Example:

set = User.find(:name => "John")
set.find(:age => 30)



426
427
428
429
430
 
# File 'lib/sohm.rb', line 426

def find(dict)
  MultiSet.new(
    namespace, model, Command[:sinterstore, key, *model.filters(dict)]
  )
end

#union(dict) ⇒ Object

Do a union to the existing set using any number of filters.

Example:

set = User.find(:name => "John")
set.union(:name => "Jane")

# You can also do it in one line.
User.find(:name => "John").union(:name => "Jane")



470
471
472
 
# File 'lib/sohm.rb', line 470

def union(dict)
  MultiSet.new(namespace, model, key).union(dict)
end