Class: Matching::RedisIndex

Inherits:
Object
  • Object
show all
Defined in:
lib/matching/redis_index.rb

Instance Method Summary collapse

Constructor Details

#initialize(db_num = 8) ⇒ RedisIndex

Returns a new instance of RedisIndex.



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# File 'lib/matching/redis_index.rb', line 6

def initialize(db_num=8)
  @redis = Redis.new
  @redis.select(db_num)
  @redis.flushdb
end

Instance Method Details

#get(attr, val) ⇒ Object

Return an array of object ids for a given attribute and value



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# File 'lib/matching/redis_index.rb', line 20

def get(attr, val)
  str_ids = @redis.smembers("#{attr}:#{val}")
  (str_ids.any? ? str_ids.map { |a| a.to_i } : nil)
end

#put(attr, val, id) ⇒ Object

Add a value to the index for a given attribute and object id



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# File 'lib/matching/redis_index.rb', line 13

def put(attr, val, id)
  unless val.nil?
    @redis.sadd("#{attr}:#{val}",id)
  end
end