Class: ActiveRecord::ConnectionAdapters::JdbcColumn

Inherits:
Column
  • Object
show all
Defined in:
lib/arjdbc/jdbc/column.rb

Overview

The base class for all of JdbcAdapter's returned columns. Instances of JdbcColumn will get extended with "column-spec" modules (similar to how JdbcAdapter gets spec modules in) if the adapter spec module provided a column_selector (matcher) method for it's database specific type.

See Also:

Direct Known Subclasses

OracleColumn, SQLite3Column

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.column_types ⇒ Hash

Returns the available column types

Returns:

  • (Hash) —

    of (matcher, block) pairs



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# File 'lib/arjdbc/jdbc/column.rb', line 22

def self.column_types
  types = {}
  for mod in ::ArJdbc.modules
    if mod.respond_to?(:column_selector)
      sel = mod.column_selector # [ matcher, block ]
      types[ sel[0] ] = sel[1]
    end
  end
  types
end

Instance Method Details

#default_value(value) ⇒ Object

Similar to ActiveRecord's extract_value_from_default(default).

Returns:

  • default value for a column (possibly extracted from driver value)



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# File 'lib/arjdbc/jdbc/column.rb', line 18

def default_value(value); value; end