Module: SimpleAttributeMapper

Defined in:
lib/simple_attribute_mapper.rb,
lib/simple_attribute_mapper/map.rb,
lib/simple_attribute_mapper/mapper.rb,
lib/simple_attribute_mapper/version.rb,
lib/simple_attribute_mapper/configuration.rb,
lib/simple_attribute_mapper/un_mappable_error.rb,
lib/simple_attribute_mapper/configuration_error.rb,
lib/simple_attribute_mapper/duplicate_mapping_error.rb

Defined Under Namespace

Classes: Configuration, ConfigurationError, DuplicateMappingError, Map, Mapper, UnMappableError

Constant Summary collapse

VERSION = 
"0.0.3"

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.configuration ⇒ Object

Returns the value of attribute configuration.



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# File 'lib/simple_attribute_mapper.rb', line 11

def configuration
  @configuration
end

Class Method Details

.configure {|configuration| ... } ⇒ Object

Yields:



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# File 'lib/simple_attribute_mapper.rb', line 14

def self.configure
  self.configuration ||= Configuration.new
  yield(configuration)
end

.from(source_class) ⇒ Object 



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# File 'lib/simple_attribute_mapper.rb', line 19

def self.from(source_class)
  Map.new(source_class)
end

.map(source_instance, target_class) ⇒ Object 



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# File 'lib/simple_attribute_mapper.rb', line 23

def self.map(source_instance, target_class)
  mapper_for(source_instance, target_class).map(source_instance, target_class)
end

.map_attributes(source_instance, target_instance) ⇒ Object 



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# File 'lib/simple_attribute_mapper.rb', line 27

def self.map_attributes(source_instance, target_instance)
  mapper_for(source_instance, target_instance.class).map_attributes(source_instance, target_instance)
end

.mapper_for(source_instance, target_class) ⇒ Object 



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# File 'lib/simple_attribute_mapper.rb', line 31

def self.mapper_for(source_instance, target_class)
  if self.configuration.maps.length == 0
    raise ConfigurationError.new("There are no mappings configured, check the documentation for configuration steps")
  end

  mappings = configuration.find_mapping(source_instance.class, target_class)
  if mappings.length == 0
    raise ConfigurationError.new("There are no mappings configured for '#{source_instance.class}' -> '#{target_class}'")
  end

  Mapper.new(mappings[0].mappings)
end