Class: Dgrid::API::Workspace::Backup

Inherits:
Object
  • Object
show all
Includes:
SetMembersFromHash
Defined in:
lib/dgrid/api/workspace.rb

Direct Known Subclasses

Backup_0_1

Class Method Summary collapse

Instance Method Summary collapse

Methods included from SetMembersFromHash

#change_string_keys_to_symbol_keys, #set_members_from_hash, #split_hash

Constructor Details

#initialize(workspace = nil) ⇒ Backup

Returns a new instance of Backup.



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# File 'lib/dgrid/api/workspace.rb', line 192

def initialize(workspace = nil)
  raise "Backup is a pure virtual class.  Use Backup.create instead of Backup.new" unless self.class != Backup
  hashify_all_members(workspace) unless workspace.nil?
end

Class Method Details

.backed_up_classes ⇒ Object 



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# File 'lib/dgrid/api/workspace.rb', line 218

def self.backed_up_classes
  self.entity_classes
end

.create(workspace) ⇒ Object 



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# File 'lib/dgrid/api/workspace.rb', line 206

def self.create(workspace)
  self.current_valid_backup_class.new(workspace)
end

.current_valid_backup_class ⇒ Object 



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# File 'lib/dgrid/api/workspace.rb', line 197

def self.current_valid_backup_class
  # Backup_0_1
  Backup_0_2
end

.entity_classes ⇒ Object 



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# File 'lib/dgrid/api/workspace.rb', line 210

def self.entity_classes 
  raise "Pure Virtual self.entity_classes needs to be overridden in #{self.class.name}"
end

.migrate(backup_of_wrong_class) ⇒ Object 



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# File 'lib/dgrid/api/workspace.rb', line 235

def self.migrate(backup_of_wrong_class)
  raise "Cannot migrate anything to class #{self.name}" unless self.predecessor
  backup_of_predecessor_class = (backup_of_wrong_class.class == self.predecessor) ? backup_of_wrong_class : self.predecessor.migrate(backup_of_wrong_class)
  migrated = self.new
  migrated.migrate_from_predecessor(backup_of_predecessor_class)
  migrated
end

Instance Method Details

#backed_up_classes ⇒ Object 



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# File 'lib/dgrid/api/workspace.rb', line 222

def backed_up_classes
  self.class.backed_up_classes
end

#current_valid_backup_class ⇒ Object 



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# File 'lib/dgrid/api/workspace.rb', line 202

def current_valid_backup_class
  self.class.current_valid_backup_class
end

#entity_classes ⇒ Object 



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# File 'lib/dgrid/api/workspace.rb', line 214

def entity_classes
  self.class.entity_classes
end

#migrate_from_predecessor(predecessor) ⇒ Object 



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# File 'lib/dgrid/api/workspace.rb', line 243

def migrate_from_predecessor(predecessor)
  raise "Pure Virtual migrate_from_predecessor needs to be overridden in #{self.class.name}"
end

#restore_into(workspace) ⇒ Object 



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# File 'lib/dgrid/api/workspace.rb', line 226

def restore_into(workspace)
  if self.class == current_valid_backup_class
    do_restore(workspace)
  else
    restorable_backup = current_valid_backup_class.migrate(self)
    restorable_backup.restore_into(workspace)
  end
end