class CreateEngrelTables

# File lib/generators/templates/create_engrel_tables.rb, line 42
def self.down
  drop_table :engrel_sentences
  drop_table :engrel_prepositional_phrases
end

# File lib/generators/templates/create_engrel_tables.rb, line 2
def self.up
  create_table :engrel_sentences, :force => true do |t|
    t.column :subject_id, "BIGINT"
    t.column :subject_type, :string 

    t.column :direct_object_id, "BIGINT"
    t.column :direct_object_type, :string 

    t.enum :verb
    t.string :direct_object_data

    t.datetime :created_at
    t.datetime :updated_at
  end     

  add_index :engrel_sentences, :direct_object_id, :name => "direct_object_index"
  add_index :engrel_sentences, :subject_id, :name => "subject_index"
  add_index :engrel_sentences, :verb, :name => "verb_index"
  change_column :engrel_sentences, :id, 'BIGINT NOT NULL AUTO_INCREMENT'  # For big IDs like Facebook

  create_table :engrel_prepositional_phrases, :force => true do |t|
    t.references :sentence

    t.enum :preposition
    t.enum :modifier

    t.column :indirect_object_id, "BIGINT"
    t.column :indirect_object_type, :string

    t.string :indirect_object_data

    t.datetime :created_at
    t.datetime :updated_at
  end

  add_index :engrel_prepositional_phrases, :indirect_object_id, :name => "indirect_object_index"
  add_index :engrel_prepositional_phrases, :preposition, :name => "preposition_index"
  change_column :engrel_prepositional_phrases, :id, 'BIGINT NOT NULL AUTO_INCREMENT'
end