Class: Volt::Sql::Reconcile

Inherits:
Object
  • Object
show all
Defined in:
app/sql/lib/reconcile.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(adaptor, db) ⇒ Reconcile

Returns a new instance of Reconcile.



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# File 'app/sql/lib/reconcile.rb', line 17

def initialize(adaptor, db)
  @adaptor = adaptor
  @db = db
end

Instance Attribute Details

#db ⇒ Object (readonly)

Returns the value of attribute db.



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# File 'app/sql/lib/reconcile.rb', line 16

def db
  @db
end

Instance Method Details

#reconcile! ⇒ Object

reconcile takes the database from its current state to the state defined in the model classes with the field helper



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# File 'app/sql/lib/reconcile.rb', line 24

def reconcile!
  table_reconciles = []
  Volt::RootModels.model_classes.each do |model_class|
    table_reconciles << TableReconcile.new(@adaptor, @db, model_class)
  end

  # Make any missing tables
  table_reconciles.each(&:ensure_table)

  # Make sure the migrations are up to date first.
  Volt::MigrationRunner.new(@db).run

  # After the migrations, reconcile tables
  table_reconciles.each(&:run)

  # After the initial reconcile!, we add a listener for any new models
  # created, so we can reconcile them (in specs mostly)
  reset!
  @@listener = RootModels.on('model_created') do |model_class|
    # We do a full invalidate and wait for the next db access, because the
    # model_created gets called before the class is actually fully defined.
    # (ruby inherited limitation)
    @adaptor.invalidate_reconcile!
  end
end

#reset! ⇒ Object

Called to clear the listener



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# File 'app/sql/lib/reconcile.rb', line 52

def reset!
  if defined?(@@listener) && @@listener
    @@listener.remove
    @@listener = nil
  end
end