instance method translate_exception

# File activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb, line 626
        def translate_exception(exception, message:, sql:, binds:)
          # SQLite 3.8.2 returns a newly formatted error message:
          #   UNIQUE constraint failed: *table_name*.*column_name*
          # Older versions of SQLite return:
          #   column *column_name* is not unique
          if exception.message.match?(/(column(s)? .* (is|are) not unique|UNIQUE constraint failed: .*)/i)
            RecordNotUnique.new(message, sql: sql, binds: binds, connection_pool: @pool)
          elsif exception.message.match?(/(.* may not be NULL|NOT NULL constraint failed: .*)/i)
            NotNullViolation.new(message, sql: sql, binds: binds, connection_pool: @pool)
          elsif exception.message.match?(/FOREIGN KEY constraint failed/i)
            InvalidForeignKey.new(message, sql: sql, binds: binds, connection_pool: @pool)
          elsif exception.message.match?(/called on a closed database/i)
            ConnectionNotEstablished.new(exception, connection_pool: @pool)
          else
            super
          end
        end