Class: Believer::EmptyResult

Inherits:
Query show all
Defined in:
lib/believer/empty_result.rb

Overview

class EmptyResult

DATA_METHODS = {
    :execute => [],
    :destroy_all => nil,
    :delete_all => 0,
    :to_a => [],
    :size => 0,
    :count => 0,
    :each => nil,
    :first => nil,
    :last => nil,
    :any? => false,
    :sort_by => nil,
    :loaded_objects => []
}
QUERY_METHODS = [:select, :where, :order, :limit]

DATA_METHODS.each do |method_name, return_val|
  define_method(method_name) do |*|
    return_val
  end
end

QUERY_METHODS.each do |method_name|
  define_method(method_name) do |*|
    self
  end
end

end

Constant Summary

Constants inherited from Query

Query::DEFAULT_FILTER_LIMIT

Instance Attribute Summary

Attributes inherited from Query

#filtering_allowed, #limit_to, #order_by, #record_class, #selects

Attributes inherited from Command

#consistency_level, #record_class

Instance Method Summary collapse

Methods inherited from Query

#allow_filtering, #initialize, #limit, #order, #pluck, #query_attributes, #select

Methods included from ActAsEnumerable

#any?, #first, included, #last

Methods included from Purging

#delete_all, #delete_all_chunked, #destroy_all

Methods included from Updating

#update_all

Methods included from Extending

#apply_modules, #extending

Methods inherited from FilterCommand

#query_attributes, #where, #wheres, #wheres=

Methods inherited from Command

#can_execute?, #command_name, #consistency, #execution_options, #execution_options=, #initialize, #override_execution_options, #query_attributes

Constructor Details

This class inherits a constructor from Believer::Query

Instance Method Details

#clone ⇒ Object 



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# File 'lib/believer/empty_result.rb', line 35

def clone
  self
end

#count ⇒ Object 



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# File 'lib/believer/empty_result.rb', line 51

def count
  0
end

#execute(name = nil) ⇒ Object 



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# File 'lib/believer/empty_result.rb', line 55

def execute(name = nil)
  []
end

#exists?(*args) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/believer/empty_result.rb', line 47

def exists?(*args)
  false
end

#to_a ⇒ Object 



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# File 'lib/believer/empty_result.rb', line 43

def to_a
  []
end

#to_cql ⇒ Object 



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# File 'lib/believer/empty_result.rb', line 39

def to_cql
  nil
end