Class: Virsandra::WhereQuery

Inherits:
Query
  • Object
show all
Defined in:
lib/virsandra/queries/where_query.rb

Constant Summary collapse

OPERATOR_MAPPING = 
{
  :lt => "<",
  :gt => ">",
  :eq => "=",
  :lt_or_eq => "<=",
  :gt_or_eq => ">=",
  :in => "IN"
}

Instance Attribute Summary

Attributes inherited from Query

#row, #statement

Instance Method Summary collapse

Methods inherited from Query

#add, alter, delete, #execute, #fetch, #from, insert, #limit, #order, select, #to_s, #values, #where

Constructor Details

#initialize(clause) ⇒ WhereQuery

Returns a new instance of WhereQuery.



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# File 'lib/virsandra/queries/where_query.rb', line 12

def initialize(clause)
  @clause = clause
end

Instance Method Details

#+(where_query) ⇒ Object Also known as: merge 



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# File 'lib/virsandra/queries/where_query.rb', line 16

def +(where_query)
  if where_query.is_a?(self.class)
    @clause = [to_s, where_query.to_s.gsub(/^WHERE\s+/, "")].join(" AND ")
  else
    raise InvalidQuery.new("WhereQuery can be mereged only with other WhereQuery")
  end
end