Class: Riddle::Client::Filter

Inherits:
Object
  • Object
show all
Defined in:
lib/riddle/client/filter.rb

Overview

Used for querying Sphinx.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(attribute, values, exclude = false) ⇒ Filter

Attribute name, values (which can be an array or a range), and whether the filter should be exclusive.



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# File 'lib/riddle/client/filter.rb', line 9

def initialize(attribute, values, exclude=false)
  @attribute, @values, @exclude = attribute, values, exclude
end

Instance Attribute Details

#attribute ⇒ Object

Returns the value of attribute attribute.



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# File 'lib/riddle/client/filter.rb', line 5

def attribute
  @attribute
end

#exclude ⇒ Object

Returns the value of attribute exclude.



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# File 'lib/riddle/client/filter.rb', line 5

def exclude
  @exclude
end

#values ⇒ Object

Returns the value of attribute values.



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# File 'lib/riddle/client/filter.rb', line 5

def values
  @values
end

Instance Method Details

#exclude? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/riddle/client/filter.rb', line 13

def exclude?
  self.exclude
end

#query_message ⇒ Object

Returns the message for this filter to send to the Sphinx service



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# File 'lib/riddle/client/filter.rb', line 18

def query_message
  message = Message.new
  
  message.append_string self.attribute
  case self.values
  when Range
    if self.values.first.is_a?(Float) && self.values.last.is_a?(Float)
      message.append_int FilterTypes[:float_range]
      message.append_floats self.values.first, self.values.last
    else
      message.append_int FilterTypes[:range]
      message.append_ints self.values.first, self.values.last
    end
  when Array
    message.append_int FilterTypes[:values]
    message.append_int self.values.length
    # using to_f is a hack from the php client - to workaround 32bit
    # signed ints on x32 platforms
    message.append_ints *self.values.collect { |val| val.to_f }
  end
  message.append_int self.exclude? ? 1 : 0
  
  message.to_s
end