Class: ROM::SQL::Schema::AttributesInferrer Private

Inherits:
Object
  • Object
show all
Extended by:
Dry::Core::ClassAttributes, Initializer
Defined in:
lib/rom/sql/schema/attributes_inferrer.rb

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Constant Summary collapse

CONSTRAINT_DB_TYPE =

This constant is part of a private API. You should avoid using this constant if possible, as it may be removed or be changed in the future.

'add_constraint'.freeze

Instance Method Summary collapse

Instance Method Details

#call(schema, gateway) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.


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# File 'lib/rom/sql/schema/attributes_inferrer.rb', line 22

def call(schema, gateway)
  dataset = schema.name.dataset

  columns = filter_columns(gateway.connection.schema(dataset))

  inferred = columns.map do |name, definition|
    type = type_builder.(**definition)

    attr_class.new(type.meta(source: schema.name), name: name) if type
  end.compact

  missing = columns.map(&:first) - inferred.map { |attr| attr.name }

  [inferred, missing]
end

#filter_columns(schema) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.


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# File 'lib/rom/sql/schema/attributes_inferrer.rb', line 46

def filter_columns(schema)
  schema.reject { |_, definition| definition[:db_type] == CONSTRAINT_DB_TYPE }
end

#with(new_options) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.


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# File 'lib/rom/sql/schema/attributes_inferrer.rb', line 41

def with(new_options)
  self.class.new(options.merge(new_options))
end