Class: SocialFramework::NetworkHelper::GraphStrategyDefault

Inherits:
GraphStrategy
  • Object
show all
Defined in:
app/helpers/social_framework/network_helper.rb

Overview

Represent the network on a Graph, with Vertices and Edges

Instance Attribute Summary

Attributes inherited from GraphStrategy

#depth, #network

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.get_instance(id, elements_factory) ⇒ Object

Get graph instance to user logged

Params:
id

Integer Id of the user logged

elements_factory

String Represent the factory class name to build

Returns Graph object



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# File 'app/helpers/social_framework/network_helper.rb', line 85

def self.get_instance(id, elements_factory)
  @@instances ||= {}
  
  if @@instances[id].nil?
    @@instances[id] = GraphStrategyDefault.new elements_factory
  end

  return @@instances[id]
end

Instance Method Details

#build(root, attributes = SocialFramework.attributes_to_build_graph, relationships = "all") ⇒ Object

Mount a graph from an user

Params:
root

User Root user to mount graph

attributes

Array Attributes will be added in vertex

relationships

Array labels to find relationships, can be multiple in array or just one in a simple String, default is “all” thats represents all relationships existing

Returns The graph mounted



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# File 'app/helpers/social_framework/network_helper.rb', line 109

def build(root, attributes = SocialFramework.attributes_to_build_graph, relationships = "all")
  @root = root
  @network.clear
  vertices = Array.new

  attributes_hash = mount_attributes(attributes, root)
  vertices << {vertex: @elements_factory.create_vertex(@root.id, @root.class, attributes_hash), depth: 1}

  until vertices.empty?
    pair = vertices.shift
    current_vertex = pair[:vertex]
    @network << current_vertex

    next if pair[:depth] == @depth or current_vertex.type == ModelFabric.get_class(SocialFramework.event_class)
    new_depth = pair[:depth] + 1

    edges = get_edges(current_vertex.id, relationships)

    edges.each do |edge|
      user = (edge.origin.id == current_vertex.id) ? edge.destiny : edge.origin

      add_vertex(vertices, current_vertex, new_depth, user, attributes, edge.label, edge.bidirectional)
    end

    events = get_events(current_vertex.id)
    events.each do |event|
      add_vertex(vertices, current_vertex, new_depth, event, attributes, "event", false)
    end
  end
end

#destroy(id) ⇒ Object

Destroy graph instance with id passed

Params:
id

Integer Id of the user logged

Returns Graph instance removed



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# File 'app/helpers/social_framework/network_helper.rb', line 99

def destroy(id)
  @@instances.delete(id)
end

#search(map, search_in_progress = false, elements_number = SocialFramework.elements_number_to_search) ⇒ Object

Search users with values specified in a map

Params:
map

Hash with keys and values to compare

search_in_progress

Boolean to continue if true or start a new search

elements_number

Integer to limit max search result

Returns Hash with users and events found



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# File 'app/helpers/social_framework/network_helper.rb', line 146

def search(map, search_in_progress = false, elements_number = SocialFramework.elements_number_to_search)
  return {users: @users_found, events: @events_found} if @finished_search and search_in_progress == true

  unless search_in_progress
    clean_vertices
    @network.first.color = :gray
    @queue << @network.first
  end

  if block_given? and search_in_progress
    @elements_number = yield @elements_number
  else
    @elements_number += elements_number
  end

  search_visit(map) unless @finished_search_in_graph
  search_in_database(map) if (@users_found.size + @events_found.size) < @elements_number and @finished_search_in_graph
  return {users: @users_found, events: @events_found}
end

#suggest_relationships(type_relationships = SocialFramework.relationship_type_to_suggest, amount_relationships = SocialFramework.amount_relationship_to_suggest) ⇒ Object

Suggest relationships to root

Params:
type_relationships

Array labels to find relationships, can be multiple in array or just one in a simple String

amount_relationships

Integer quantity of relationships to suggest a new relationship

Returns Array with users to suggestions



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# File 'app/helpers/social_framework/network_helper.rb', line 171

def suggest_relationships(type_relationships = SocialFramework.relationship_type_to_suggest,
  amount_relationships = SocialFramework.amount_relationship_to_suggest)

  travel_in_third_depth(type_relationships) do |destiny_edge|
    destiny_edge.destiny.visits = 0
  end

  suggestions = Array.new

  travel_in_third_depth(type_relationships) do |destiny_edge|
    destiny_edge.destiny.visits = destiny_edge.destiny.visits + 1

    if(destiny_edge.destiny.visits == amount_relationships and
      destiny_edge.destiny.id != @root.id and
      @network.first.edges.select { |e| e.destiny == destiny_edge.destiny }.empty?)
      
      suggestions << @root.class.find(destiny_edge.destiny.id)
    end
  end
  return suggestions
end