Module: Chimera::Indexes::InstanceMethods

Defined in:
lib/chimera/indexes.rb

Overview

ClassMethods

Instance Method Summary collapse

Instance Method Details

#add_to_all_index ⇒ Object 



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# File 'lib/chimera/indexes.rb', line 172

def add_to_all_index
  self.class.connection(:redis).lpush(self.class.key_for_all_index, self.id)
end

#check_index_constraints ⇒ Object 



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# File 'lib/chimera/indexes.rb', line 113

def check_index_constraints
  self.class.defined_indexes.each do |name, props|
    case props[:type]
    when :unique then
      if val = @attributes[name.to_sym] and !val.blank?
        index_key = self.class.key_for_index(:unique, name,val.to_s)
        if k = self.class.connection(:redis).get(index_key)
          if k.to_s != self.id.to_s
            raise(Chimera::Error::UniqueConstraintViolation, val)
          end
        end
      end # if val
    end # case
  end
end

#create_indexes ⇒ Object 



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# File 'lib/chimera/indexes.rb', line 129

def create_indexes
  add_to_all_index
  self.class.defined_indexes.each do |name, props|
    case props[:type]
    when :find then
      if val = @attributes[name.to_sym] and !val.blank?
        index_key = self.class.key_for_index(:find, name, val.to_s)
        self.class.connection(:redis).sadd(index_key, self.id)
      end
    when :unique then
      if val = @attributes[name.to_sym] and !val.blank?
        index_key = self.class.key_for_index(:unique, name,val.to_s)
        if self.class.connection(:redis).exists(index_key)
          raise(Chimera::Error::UniqueConstraintViolation, val)
        else
          self.class.connection(:redis).set(index_key, self.id)
        end
      end
    when :search then
      if val = @attributes[name.to_sym] and !val.blank?
        val.to_s.split(" ").each do |word|
          word = word.downcase.stem
          next if Chimera::Indexes::SEARCH_EXCLUDE_LIST.include?(word)
          index_key = self.class.key_for_index(:search, name, word)
          self.class.connection(:redis).sadd(index_key, self.id)
        end
      end
    end
  end
  create_geo_indexes
end

#destroy_indexes ⇒ Object 



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# File 'lib/chimera/indexes.rb', line 85

def destroy_indexes
  remove_from_all_index
  self.class.defined_indexes.each do |name, props|
    case props[:type]
    when :find then
      if val = @orig_attributes[name.to_sym] and !val.blank?
        index_key = self.class.key_for_index(:find, name,val.to_s)
        self.class.connection(:redis).srem(index_key, self.id)
      end
    when :unique then
      if val = @orig_attributes[name.to_sym] and !val.blank?
        index_key = self.class.key_for_index(:unique, name,val.to_s)
        self.class.connection(:redis).del(index_key)
      end
    when :search then
      if val = @orig_attributes[name.to_sym] and !val.blank?
        val.to_s.split(" ").each do |word|
          word = word.downcase.stem
          next if Chimera::Indexes::SEARCH_EXCLUDE_LIST.include?(word)
          index_key = self.class.key_for_index(:search, name, word)
          self.class.connection(:redis).srem(index_key, self.id)
        end
      end
    end
  end
  destroy_geo_indexes
end

#remove_from_all_index ⇒ Object 



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# File 'lib/chimera/indexes.rb', line 168

def remove_from_all_index
  self.class.connection(:redis).lrem(self.class.key_for_all_index, 0, self.id)
end

#update_indexes ⇒ Object 



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# File 'lib/chimera/indexes.rb', line 161

def update_indexes
  destroy_indexes
  destroy_geo_indexes
  create_indexes
  create_geo_indexes
end