Class: Stone::Query

Inherits:
Object
  • Object
show all
Defined in:
lib/stone/query.rb

Overview

Represents a single query condition

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(field, op) ⇒ Query

Returns a new instance of Query.



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# File 'lib/stone/query.rb', line 7

def initialize(field,op)
  self.field = field
  self.op = case op
              when :gt
                ".>"
              when :lt
                ".<"
              when :gte
                ".>="
              when :lte
                ".<="
              when :includes
                ".include?"
              when :matches
                ".=~"
              when :equals
                ".=="
              when :not
                ".!="
              end
end

Instance Attribute Details

#field ⇒ Object

Returns the value of attribute field.



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# File 'lib/stone/query.rb', line 5

def field
  @field
end

#op ⇒ Object

Returns the value of attribute op.



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# File 'lib/stone/query.rb', line 5

def op
  @op
end

Instance Method Details

#expression_for(arg) ⇒ Object

Builds an expression from the conditions given during first or all

Parameters

arg

Some conditional argument



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# File 'lib/stone/query.rb', line 32

def expression_for(arg)
  if arg.is_a? String
    "#{self.field}#{self.op}('#{arg}')"
  elsif arg.is_a? Regexp
    "#{self.field}#{self.op}(#{arg.inspect})"
  elsif arg.is_a? Date
    "#{self.field}#{self.op}(DateTime.parse(\"#{arg}\"))"
  else
    "#{self.field}#{self.op}(#{arg})"        
  end
end