Sha256: 1b1d7dcd5a62eb371471b83bf08c20307c72dab2bcacb42b73e34b93e7c45970
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Size: 1.94 KB
Versions: 9
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Stored size: 1.94 KB
Contents
# encoding: utf-8
module Mongoid
module Contextual
class None
include Enumerable
include Queryable
attr_reader :criteria, :klass
# Check if the context is equal to the other object.
#
# @example Check equality.
# context == []
#
# @param [ Array ] other The other array.
#
# @return [ true, false ] If the objects are equal.
#
# @since 4.0.0
def ==(other)
other.is_a?(None)
end
# Iterate over the null context. There are no documents to iterate over
# in this case.
#
# @example Iterate over the context.
# context.each do |doc|
# puts doc.name
# end
#
# @return [ Enumerator ] The enumerator.
#
# @since 4.0.0
def each
if block_given?
[].each { |doc| yield(doc) }
self
else
to_enum
end
end
# Do any documents exist for the context.
#
# @example Do any documents exist for the context.
# context.exists?
#
# @return [ true, false ] If the count is more than zero.
#
# @since 4.0.0
def exists?; false; end
# Create the new null context.
#
# @example Create the new context.
# Null.new(criteria)
#
# @param [ Criteria ] The criteria.
#
# @since 4.0.0
def initialize(criteria)
@criteria, @klass = criteria, criteria.klass
end
# Always returns nil.
#
# @example Get the last document.
# context.last
#
# @return [ nil ] Always nil.
#
# @since 4.0.0
def last; nil; end
# Always returns zero.
#
# @example Get the length of matching documents.
# context.length
#
# @return [ Integer ] Always zero.
#
# @since 4.0.0
def length
entries.length
end
alias :size :length
end
end
end
Version data entries
9 entries across 9 versions & 2 rubygems