Class: Mebla::ResultSet

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/mebla/result_set.rb

Overview

Represents a set of search results

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(response) ⇒ ResultSet

Creates a new result set from an elasticsearch response hash

Parameters:

  • response 


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# File 'lib/mebla/result_set.rb', line 14

def initialize(response)
  # Keep the query time
  @time = response['took'] 
  # Keep the facets      
  @facets = response['facets']
  # Keep the query total to check against the count 
  @total = response['hits']['total']       
  
  # Be efficient only query the database once
  model_ids = []
  
  # Collect results' ids
  response['hits']['hits'].each do |hit|
    model_class = hit['_type'].camelize.constantize        
    model_ids << [model_class]

    if model_class.embedded?
      model_class_collection = model_ids.assoc(model_class)
      # collect parent ids
      # [class, [parent_id, ids]]
      parent_id = hit['_source']['_parent']
      
      model_class_collection << [parent_id]
      
      model_class_collection.assoc(parent_id) << hit['_source']['id']
    else
      # collect ids
      # [class, ids]
      model_ids.assoc(model_class) << hit['_source']['id']
    end
  end
  
  # Cast the results into their appropriate classes
  @entries = []

  model_ids.each do |model_class_collection|          
    model_class = model_class_collection.first
    ids = model_class_collection.drop(1)

    unless model_class.embedded?
      # Retrieve the results from the database
      ids.each do |id|
        @entries << model_class.find(id)
      end
    else
      # Get the parent
      parent_class = model_class.embedded_parent
      access_method = model_class.embedded_as
      
      ids.each do |parent_id_collection|
        parent_id = parent_id_collection.first
        entries_ids = parent_id_collection.drop(1)
        
        parent = parent_class.find parent_id
        
        # Retrieve the results from the database
        entries_ids.each do |entry_id|
          @entries << parent.send(access_method.to_sym).find(entry_id)
        end
      end
    end
  end
        
  Mebla.log("WARNING: Index not synchronized with the database; index total hits: #{@total}, retrieved documents: #{self.count}", :warn) if @total != self.count
end

Instance Attribute Details

#entries ⇒ Object (readonly)

Returns the value of attribute entries.



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# File 'lib/mebla/result_set.rb', line 6

def entries
  @entries
end

#facets ⇒ Object (readonly)

Returns the value of attribute facets.



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# File 'lib/mebla/result_set.rb', line 6

def facets
  @facets
end

#time ⇒ Object (readonly)

Returns the value of attribute time.



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# File 'lib/mebla/result_set.rb', line 6

def time
  @time
end

#total ⇒ Object (readonly)

Returns the value of attribute total.



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# File 'lib/mebla/result_set.rb', line 6

def total
  @total
end

Instance Method Details

#[](index) ⇒ Object

Returns the item with the given index

Parameters:

  • index (Integer) 


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# File 'lib/mebla/result_set.rb', line 87

def [](index)
  @entries[index]
end

#each(&block) ⇒ Object

Iterates over the collection



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# File 'lib/mebla/result_set.rb', line 81

def each(&block)
  @entries.each(&block)
end