class Perpetuity::Postgres::QueryAttribute
Attributes
name[R]
Public Class Methods
new(name)
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# File lib/perpetuity/postgres/query_attribute.rb, line 9 def initialize name @name = name end
Public Instance Methods
any?()
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# File lib/perpetuity/postgres/query_attribute.rb, line 33 def any? QueryExpression.new count, :>, 0 end
count()
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# File lib/perpetuity/postgres/query_attribute.rb, line 29 def count SQLFunction.new('json_array_length', self) end
id()
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# File lib/perpetuity/postgres/query_attribute.rb, line 41 def id QueryAttribute.new "#{name}->'__metadata__'->>'id'" end
in(collection)
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# File lib/perpetuity/postgres/query_attribute.rb, line 21 def in collection QueryExpression.new self, :in, collection end
nil?()
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# File lib/perpetuity/postgres/query_attribute.rb, line 25 def nil? QueryExpression.new self, :==, nil end
none?()
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# File lib/perpetuity/postgres/query_attribute.rb, line 37 def none? QueryExpression.new count, :==, 0 end
to_db()
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# File lib/perpetuity/postgres/query_attribute.rb, line 49 def to_db (self != nil).to_db end
to_s()
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# File lib/perpetuity/postgres/query_attribute.rb, line 45 def to_s name.to_s end