Class: ActiveRecord::ConnectionAdapters::ColumnWithIdentity
- Defined in:
- lib/active_record/connection_adapters/sqlserver_adapter.rb
Overview
:nodoc:
Instance Attribute Summary collapse
-
#identity ⇒ Object
readonly
Returns the value of attribute identity.
-
#is_special ⇒ Object
readonly
Returns the value of attribute is_special.
-
#scale ⇒ Object
readonly
Returns the value of attribute scale.
Attributes inherited from Column
#default, #limit, #name, #type
Instance Method Summary collapse
- #binary_to_string(value) ⇒ Object
- #cast_to_datetime(value) ⇒ Object
- #cast_to_time(value) ⇒ Object
-
#initialize(name, default, sql_type = nil, is_identity = false, scale_value = 0) ⇒ ColumnWithIdentity
constructor
A new instance of ColumnWithIdentity.
- #simplified_type(field_type) ⇒ Object
-
#string_to_binary(value) ⇒ Object
These methods will only allow the adapter to insert binary data with a length of 7K or less because of a SQL Server statement length policy.
- #type_cast(value) ⇒ Object
Methods inherited from Column
Constructor Details
#initialize(name, default, sql_type = nil, is_identity = false, scale_value = 0) ⇒ ColumnWithIdentity
Returns a new instance of ColumnWithIdentity.
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 44 def initialize(name, default, sql_type = nil, is_identity = false, scale_value = 0) super(name, default, sql_type) @identity = is_identity @is_special = sql_type =~ /text|ntext|image/i ? true : false @scale = scale_value end |
Instance Attribute Details
#identity ⇒ Object (readonly)
Returns the value of attribute identity.
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 42 def identity @identity end |
#is_special ⇒ Object (readonly)
Returns the value of attribute is_special.
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 42 def is_special @is_special end |
#scale ⇒ Object (readonly)
Returns the value of attribute scale.
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 42 def scale @scale end |
Instance Method Details
#binary_to_string(value) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 112 def binary_to_string(value) value.gsub(/(%00|%01|%02|%03)/) do case $1 when "%00" then "\r" when "%01" then "\n" when "%02\0" then "\0" when "%03" then "\x1a" end end end |
#cast_to_datetime(value) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 87 def cast_to_datetime(value) if value.is_a?(Time) if value.year != 0 and value.month != 0 and value.day != 0 return value else return Time.mktime(2000, 1, 1, value.hour, value.min, value.sec) rescue nil end end return cast_to_time(value) if value.is_a?(Date) or value.is_a?(String) rescue nil value end |
#cast_to_time(value) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 78 def cast_to_time(value) return value if value.is_a?(Time) time_array = ParseDate.parsedate(value) time_array[0] ||= 2000 time_array[1] ||= 1 time_array[2] ||= 1 Time.send(Base.default_timezone, *time_array) rescue nil end |
#simplified_type(field_type) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 51 def simplified_type(field_type) case field_type when /int|bigint|smallint|tinyint/i then :integer when /float|double|decimal|money|numeric|real|smallmoney/i then @scale == 0 ? :integer : :float when /datetime|smalldatetime/i then :datetime when /timestamp/i then :timestamp when /time/i then :time when /text|ntext/i then :text when /binary|image|varbinary/i then :binary when /char|nchar|nvarchar|string|varchar/i then :string when /bit/i then :boolean end end |
#string_to_binary(value) ⇒ Object
These methods will only allow the adapter to insert binary data with a length of 7K or less because of a SQL Server statement length policy.
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 101 def string_to_binary(value) value.gsub(/(\r|\n|\0|\x1a)/) do case $1 when "\r" then "%00" when "\n" then "%01" when "\0" then "%02" when "\x1a" then "%03" end end end |
#type_cast(value) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 65 def type_cast(value) return nil if value.nil? || value =~ /^\s*null\s*$/i case type when :string then value when :integer then value == true || value == false ? value == true ? '1' : '0' : value.to_i when :float then value.to_f when :datetime then cast_to_datetime(value) when :timestamp then cast_to_time(value) when :time then cast_to_time(value) else value end end |