Module: DataMapper::Adapters::DataObjectsAdapter::Migration

Includes:
SQL
Included in:
DataMapper::Adapters::DataObjectsAdapter
Defined in:
lib/gems/dm-core-0.9.7/lib/dm-core/adapters/data_objects_adapter.rb

Overview

TODO: move to dm-more/dm-migrations

Defined Under Namespace

Modules: ClassMethods, SQL

Instance Method Summary collapse

Instance Method Details

#create_model_storage(repository, model) ⇒ Object

TODO: move to dm-more/dm-migrations



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# File 'lib/gems/dm-core-0.9.7/lib/dm-core/adapters/data_objects_adapter.rb', line 453

def create_model_storage(repository, model)
  return false if storage_exists?(model.storage_name(repository.name))

  execute(create_table_statement(repository, model))

  (create_index_statements(repository, model) + create_unique_index_statements(repository, model)).each do |sql|
    execute(sql)
  end

  true
end

#destroy_model_storage(repository, model) ⇒ Object

TODO: move to dm-more/dm-migrations



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# File 'lib/gems/dm-core-0.9.7/lib/dm-core/adapters/data_objects_adapter.rb', line 466

def destroy_model_storage(repository, model)
  execute(drop_table_statement(repository, model))
  true
end

#transaction_primitive ⇒ Object

TODO: move to dm-more/dm-transactions



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# File 'lib/gems/dm-core-0.9.7/lib/dm-core/adapters/data_objects_adapter.rb', line 472

def transaction_primitive
  DataObjects::Transaction.create_for_uri(@uri)
end

#upgrade_model_storage(repository, model) ⇒ Object

TODO: move to dm-more/dm-migrations



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# File 'lib/gems/dm-core-0.9.7/lib/dm-core/adapters/data_objects_adapter.rb', line 432

def upgrade_model_storage(repository, model)
  table_name = model.storage_name(repository.name)

  if success = create_model_storage(repository, model)
    return model.properties(repository.name)
  end

  properties = []

  model.properties(repository.name).each do |property|
    schema_hash = property_schema_hash(repository, property)
    next if field_exists?(table_name, schema_hash[:name])
    statement = alter_table_add_column_statement(table_name, schema_hash)
    execute(statement)
    properties << property
  end

  properties
end