class ActiveRecord::ConnectionAdapters::SQLServer::Showplan::PrinterTable
Attributes
Public Class Methods
Source
# File lib/active_record/connection_adapters/sqlserver/showplan/printer_table.rb, line 14 def initialize(result) @result = result end
Public Instance Methods
Source
# File lib/active_record/connection_adapters/sqlserver/showplan/printer_table.rb, line 18 def pp @widths = compute_column_widths @separator = build_separator pp = [] pp << @separator pp << build_cells(result.columns) pp << @separator result.rows.each do |row| pp << build_cells(row) end pp << @separator pp.join("\n") + "\n" end
Private Instance Methods
Source
# File lib/active_record/connection_adapters/sqlserver/showplan/printer_table.rb, line 49 def build_cells(items) cells = [] items.each_with_index do |item, i| cells << cast_item(item).ljust(@widths[i]) end "| #{cells.join(' | ')} |" end
Source
# File lib/active_record/connection_adapters/sqlserver/showplan/printer_table.rb, line 45 def build_separator "+" + @widths.map { |w| "-" * (w + (cell_padding * 2)) }.join("+") + "+" end
Source
# File lib/active_record/connection_adapters/sqlserver/showplan/printer_table.rb, line 57 def cast_item(item) case item when NilClass then "NULL" when Float then item.to_s.to(9) else item.to_s.truncate(max_column_width) end end
Source
# File lib/active_record/connection_adapters/sqlserver/showplan/printer_table.rb, line 34 def compute_column_widths [].tap do |computed_widths| result.columns.each_with_index do |column, i| cells_in_column = [column] + result.rows.map { |r| cast_item(r[i]) } computed_width = cells_in_column.map(&:length).max final_width = computed_width > max_column_width ? max_column_width : computed_width computed_widths << final_width end end end