diff options
Diffstat (limited to 'activerecord/lib/active_record/type')
18 files changed, 568 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/type/binary.rb b/activerecord/lib/active_record/type/binary.rb new file mode 100644 index 0000000000..3bf29b5026 --- /dev/null +++ b/activerecord/lib/active_record/type/binary.rb @@ -0,0 +1,40 @@ +module ActiveRecord + module Type + class Binary < Value # :nodoc: + def type + :binary + end + + def binary? + true + end + + def type_cast(value) + if value.is_a?(Data) + value.to_s + else + super + end + end + + def type_cast_for_database(value) + return if value.nil? + Data.new(super) + end + + class Data + def initialize(value) + @value = value + end + + def to_s + @value + end + + def hex + @value.unpack('H*')[0] + end + end + end + end +end diff --git a/activerecord/lib/active_record/type/boolean.rb b/activerecord/lib/active_record/type/boolean.rb new file mode 100644 index 0000000000..06dd17ed28 --- /dev/null +++ b/activerecord/lib/active_record/type/boolean.rb @@ -0,0 +1,19 @@ +module ActiveRecord + module Type + class Boolean < Value # :nodoc: + def type + :boolean + end + + private + + def cast_value(value) + if value == '' + nil + else + ConnectionAdapters::Column::TRUE_VALUES.include?(value) + end + end + end + end +end diff --git a/activerecord/lib/active_record/type/date.rb b/activerecord/lib/active_record/type/date.rb new file mode 100644 index 0000000000..d90a6069b7 --- /dev/null +++ b/activerecord/lib/active_record/type/date.rb @@ -0,0 +1,46 @@ +module ActiveRecord + module Type + class Date < Value # :nodoc: + def type + :date + end + + def klass + ::Date + end + + def type_cast_for_schema(value) + "'#{value.to_s(:db)}'" + end + + private + + def cast_value(value) + if value.is_a?(::String) + return if value.empty? + fast_string_to_date(value) || fallback_string_to_date(value) + elsif value.respond_to?(:to_date) + value.to_date + else + value + end + end + + def fast_string_to_date(string) + if string =~ ConnectionAdapters::Column::Format::ISO_DATE + new_date $1.to_i, $2.to_i, $3.to_i + end + end + + def fallback_string_to_date(string) + new_date(*::Date._parse(string, false).values_at(:year, :mon, :mday)) + end + + def new_date(year, mon, mday) + if year && year != 0 + ::Date.new(year, mon, mday) rescue nil + end + end + end + end +end diff --git a/activerecord/lib/active_record/type/date_time.rb b/activerecord/lib/active_record/type/date_time.rb new file mode 100644 index 0000000000..560d63c101 --- /dev/null +++ b/activerecord/lib/active_record/type/date_time.rb @@ -0,0 +1,33 @@ +module ActiveRecord + module Type + class DateTime < Value # :nodoc: + include TimeValue + + def type + :datetime + end + + private + + def cast_value(string) + return string unless string.is_a?(::String) + return if string.empty? + + fast_string_to_time(string) || fallback_string_to_time(string) + end + + # '0.123456' -> 123456 + # '1.123456' -> 123456 + def microseconds(time) + time[:sec_fraction] ? (time[:sec_fraction] * 1_000_000).to_i : 0 + end + + def fallback_string_to_time(string) + time_hash = ::Date._parse(string) + time_hash[:sec_fraction] = microseconds(time_hash) + + new_time(*time_hash.values_at(:year, :mon, :mday, :hour, :min, :sec, :sec_fraction, :offset)) + end + end + end +end diff --git a/activerecord/lib/active_record/type/decimal.rb b/activerecord/lib/active_record/type/decimal.rb new file mode 100644 index 0000000000..a9db51c6ba --- /dev/null +++ b/activerecord/lib/active_record/type/decimal.rb @@ -0,0 +1,25 @@ +module ActiveRecord + module Type + class Decimal < Value # :nodoc: + include Numeric + + def type + :decimal + end + + def type_cast_for_schema(value) + value.to_s + end + + private + + def cast_value(value) + if value.respond_to?(:to_d) + value.to_d + else + value.to_s.to_d + end + end + end + end +end diff --git a/activerecord/lib/active_record/type/decimal_without_scale.rb b/activerecord/lib/active_record/type/decimal_without_scale.rb new file mode 100644 index 0000000000..cabdcecdd7 --- /dev/null +++ b/activerecord/lib/active_record/type/decimal_without_scale.rb @@ -0,0 +1,11 @@ +require 'active_record/type/integer' + +module ActiveRecord + module Type + class DecimalWithoutScale < Integer # :nodoc: + def type + :decimal + end + end + end +end diff --git a/activerecord/lib/active_record/type/float.rb b/activerecord/lib/active_record/type/float.rb new file mode 100644 index 0000000000..42eb44b9a9 --- /dev/null +++ b/activerecord/lib/active_record/type/float.rb @@ -0,0 +1,19 @@ +module ActiveRecord + module Type + class Float < Value # :nodoc: + include Numeric + + def type + :float + end + + alias type_cast_for_database type_cast + + private + + def cast_value(value) + value.to_f + end + end + end +end diff --git a/activerecord/lib/active_record/type/hash_lookup_type_map.rb b/activerecord/lib/active_record/type/hash_lookup_type_map.rb new file mode 100644 index 0000000000..bf92680268 --- /dev/null +++ b/activerecord/lib/active_record/type/hash_lookup_type_map.rb @@ -0,0 +1,19 @@ +module ActiveRecord + module Type + class HashLookupTypeMap < TypeMap # :nodoc: + delegate :key?, to: :@mapping + + def lookup(type, *args) + @mapping.fetch(type, proc { default_value }).call(type, *args) + end + + def fetch(type, *args, &block) + @mapping.fetch(type, block).call(type, *args) + end + + def alias_type(type, alias_type) + register_type(type) { |_, *args| lookup(alias_type, *args) } + end + end + end +end diff --git a/activerecord/lib/active_record/type/integer.rb b/activerecord/lib/active_record/type/integer.rb new file mode 100644 index 0000000000..08477d1303 --- /dev/null +++ b/activerecord/lib/active_record/type/integer.rb @@ -0,0 +1,23 @@ +module ActiveRecord + module Type + class Integer < Value # :nodoc: + include Numeric + + def type + :integer + end + + alias type_cast_for_database type_cast + + private + + def cast_value(value) + case value + when true then 1 + when false then 0 + else value.to_i rescue nil + end + end + end + end +end diff --git a/activerecord/lib/active_record/type/mutable.rb b/activerecord/lib/active_record/type/mutable.rb new file mode 100644 index 0000000000..64cf4b9b93 --- /dev/null +++ b/activerecord/lib/active_record/type/mutable.rb @@ -0,0 +1,16 @@ +module ActiveRecord + module Type + module Mutable + def type_cast_from_user(value) + type_cast_from_database(type_cast_for_database(value)) + end + + # +raw_old_value+ will be the `_before_type_cast` version of the + # value (likely a string). +new_value+ will be the current, type + # cast value. + def changed_in_place?(raw_old_value, new_value) # :nodoc: + raw_old_value != type_cast_for_database(new_value) + end + end + end +end diff --git a/activerecord/lib/active_record/type/numeric.rb b/activerecord/lib/active_record/type/numeric.rb new file mode 100644 index 0000000000..137c9e4c99 --- /dev/null +++ b/activerecord/lib/active_record/type/numeric.rb @@ -0,0 +1,42 @@ +module ActiveRecord + module Type + module Numeric # :nodoc: + def number? + true + end + + def type_cast(value) + value = case value + when true then 1 + when false then 0 + when ::String then value.presence + else value + end + super(value) + end + + def changed?(old_value, _new_value, new_value_before_type_cast) # :nodoc: + # 0 => 'wibble' should mark as changed so numericality validations run + if nil_or_zero?(old_value) && non_numeric_string?(new_value_before_type_cast) + # nil => '' should not mark as changed + old_value != new_value_before_type_cast.presence + else + super + end + end + + private + + def non_numeric_string?(value) + # 'wibble'.to_i will give zero, we want to make sure + # that we aren't marking int zero to string zero as + # changed. + value !~ /\A\d+\.?\d*\z/ + end + + def nil_or_zero?(value) + value.nil? || value == 0 + end + end + end +end diff --git a/activerecord/lib/active_record/type/serialized.rb b/activerecord/lib/active_record/type/serialized.rb new file mode 100644 index 0000000000..42bbed7103 --- /dev/null +++ b/activerecord/lib/active_record/type/serialized.rb @@ -0,0 +1,51 @@ +module ActiveRecord + module Type + class Serialized < SimpleDelegator # :nodoc: + include Mutable + + attr_reader :subtype, :coder + + def initialize(subtype, coder) + @subtype = subtype + @coder = coder + super(subtype) + end + + def type_cast_from_database(value) + if is_default_value?(value) + value + else + coder.load(super) + end + end + + def type_cast_for_database(value) + return if value.nil? + unless is_default_value?(value) + super coder.dump(value) + end + end + + def accessor + ActiveRecord::Store::IndifferentHashAccessor + end + + def init_with(coder) + @subtype = coder['subtype'] + @coder = coder['coder'] + __setobj__(@subtype) + end + + def encode_with(coder) + coder['subtype'] = @subtype + coder['coder'] = @coder + end + + private + + def is_default_value?(value) + value == coder.load(nil) + end + end + end +end diff --git a/activerecord/lib/active_record/type/string.rb b/activerecord/lib/active_record/type/string.rb new file mode 100644 index 0000000000..3b1554bd5a --- /dev/null +++ b/activerecord/lib/active_record/type/string.rb @@ -0,0 +1,23 @@ +module ActiveRecord + module Type + class String < Value # :nodoc: + def type + :string + end + + def text? + true + end + + private + + def cast_value(value) + case value + when true then "1" + when false then "0" + else value.to_s + end + end + end + end +end diff --git a/activerecord/lib/active_record/type/text.rb b/activerecord/lib/active_record/type/text.rb new file mode 100644 index 0000000000..26f980f060 --- /dev/null +++ b/activerecord/lib/active_record/type/text.rb @@ -0,0 +1,11 @@ +require 'active_record/type/string' + +module ActiveRecord + module Type + class Text < String # :nodoc: + def type + :text + end + end + end +end diff --git a/activerecord/lib/active_record/type/time.rb b/activerecord/lib/active_record/type/time.rb new file mode 100644 index 0000000000..41f7d97f0c --- /dev/null +++ b/activerecord/lib/active_record/type/time.rb @@ -0,0 +1,26 @@ +module ActiveRecord + module Type + class Time < Value # :nodoc: + include TimeValue + + def type + :time + end + + private + + def cast_value(value) + return value unless value.is_a?(::String) + return if value.empty? + + dummy_time_value = "2000-01-01 #{value}" + + fast_string_to_time(dummy_time_value) || begin + time_hash = ::Date._parse(dummy_time_value) + return if time_hash[:hour].nil? + new_time(*time_hash.values_at(:year, :mon, :mday, :hour, :min, :sec, :sec_fraction)) + end + end + end + end +end diff --git a/activerecord/lib/active_record/type/time_value.rb b/activerecord/lib/active_record/type/time_value.rb new file mode 100644 index 0000000000..d611d72dd4 --- /dev/null +++ b/activerecord/lib/active_record/type/time_value.rb @@ -0,0 +1,38 @@ +module ActiveRecord + module Type + module TimeValue # :nodoc: + def klass + ::Time + end + + def type_cast_for_schema(value) + "'#{value.to_s(:db)}'" + end + + private + + def new_time(year, mon, mday, hour, min, sec, microsec, offset = nil) + # Treat 0000-00-00 00:00:00 as nil. + return if year.nil? || (year == 0 && mon == 0 && mday == 0) + + if offset + time = ::Time.utc(year, mon, mday, hour, min, sec, microsec) rescue nil + return unless time + + time -= offset + Base.default_timezone == :utc ? time : time.getlocal + else + ::Time.public_send(Base.default_timezone, year, mon, mday, hour, min, sec, microsec) rescue nil + end + end + + # Doesn't handle time zones. + def fast_string_to_time(string) + if string =~ ConnectionAdapters::Column::Format::ISO_DATETIME + microsec = ($7.to_r * 1_000_000).to_i + new_time $1.to_i, $2.to_i, $3.to_i, $4.to_i, $5.to_i, $6.to_i, microsec + end + end + end + end +end diff --git a/activerecord/lib/active_record/type/type_map.rb b/activerecord/lib/active_record/type/type_map.rb new file mode 100644 index 0000000000..88c5f9c497 --- /dev/null +++ b/activerecord/lib/active_record/type/type_map.rb @@ -0,0 +1,48 @@ +module ActiveRecord + module Type + class TypeMap # :nodoc: + def initialize + @mapping = {} + end + + def lookup(lookup_key, *args) + matching_pair = @mapping.reverse_each.detect do |key, _| + key === lookup_key + end + + if matching_pair + matching_pair.last.call(lookup_key, *args) + else + default_value + end + end + + def register_type(key, value = nil, &block) + raise ::ArgumentError unless value || block + + if block + @mapping[key] = block + else + @mapping[key] = proc { value } + end + end + + def alias_type(key, target_key) + register_type(key) do |sql_type, *args| + metadata = sql_type[/\(.*\)/, 0] + lookup("#{target_key}#{metadata}", *args) + end + end + + def clear + @mapping.clear + end + + private + + def default_value + @default_value ||= Value.new + end + end + end +end diff --git a/activerecord/lib/active_record/type/value.rb b/activerecord/lib/active_record/type/value.rb new file mode 100644 index 0000000000..875fb98c4b --- /dev/null +++ b/activerecord/lib/active_record/type/value.rb @@ -0,0 +1,78 @@ +module ActiveRecord + module Type + class Value # :nodoc: + attr_reader :precision, :scale, :limit + + # Valid options are +precision+, +scale+, and +limit+. + # They are only used when dumping schema. + def initialize(options = {}) + options.assert_valid_keys(:precision, :scale, :limit) + @precision = options[:precision] + @scale = options[:scale] + @limit = options[:limit] + end + + # The simplified type that this object represents. Subclasses + # must override this method. + def type; end + + def type_cast_from_database(value) + type_cast(value) + end + + def type_cast_from_user(value) + type_cast(value) + end + + def type_cast_for_database(value) + value + end + + def type_cast_for_schema(value) + value.inspect + end + + def text? + false + end + + def number? + false + end + + def binary? + false + end + + def klass # :nodoc: + end + + # +old_value+ will always be type-cast. + # +new_value+ will come straight from the database + # or from assignment, so it could be anything. Types + # which cannot typecast arbitrary values should override + # this method. + def changed?(old_value, new_value, _new_value_before_type_cast) # :nodoc: + old_value != new_value + end + + def changed_in_place?(*) # :nodoc: + false + end + + private + # Takes an input from the database, or from attribute setters, + # and casts it to a type appropriate for this object. This method + # should not be overriden by subclasses. Instead, override `cast_value`. + def type_cast(value) # :api: public + cast_value(value) unless value.nil? + end + + # Responsible for casting values from external sources to the appropriate + # type. Called by `type_cast` for all values except `nil`. + def cast_value(value) # :api: public + value + end + end + end +end |