Class: Ion::Indices::Text

Inherits:
Ion::Index show all
Defined in:
lib/ion/indices/text.rb

Direct Known Subclasses

Metaphone, Number

Instance Attribute Summary

Attributes inherited from Ion::Index

#name, #options

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Ion::Index

del, #initialize

Constructor Details

This class inherits a constructor from Ion::Index

Class Method Details

.deindex(record) ⇒ Object 



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# File 'lib/ion/indices/text.rb', line 23

def self.deindex(record)
  super
  refs = references_key(record)
  refs.smembers.each do |key|
    Ion.redis.zrem(key, record.id)
    Ion.redis.del(key)  if Ion.redis.zrange(key,0,0).nil?
  end
end

Instance Method Details

#index(record) ⇒ Object 



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# File 'lib/ion/indices/text.rb', line 11

def index(record)
  super
  words = index_words(value_for(record).to_s)
  refs  = references_key(record)

  words.each do |word|
    k = index_key[word]
    refs.sadd k
    k.zadd 1, record.id
  end
end

#index_words(str) ⇒ Object 



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# File 'lib/ion/indices/text.rb', line 3

def index_words(str)
  Stringer.keywords str
end

#search(what, args = {}) ⇒ Object 



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# File 'lib/ion/indices/text.rb', line 32

def search(what, args={})
  super
  words   = search_words(what)
  keys    = words.map { |word| index_key[word] }

  w = keys.map { 0 }; w[0] = 1
  Ion.intersect keys, weights: w
end

#search_words(str) ⇒ Object 



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# File 'lib/ion/indices/text.rb', line 7

def search_words(str)
  index_words str
end