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Versions: 13
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Stored size: 1.83 KB
Contents
module ActiveRecord
module ConnectionAdapters
module Sqlserver
module Showplan
class PrinterTable
cattr_accessor :max_column_width, :cell_padding
self.max_column_width = 50
self.cell_padding = 1
attr_reader :result
def initialize(result)
@result = result
end
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
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
def build_separator
'+' + @widths.map { |w| '-' * (w + (cell_padding * 2)) }.join('+') + '+'
end
def build_cells(items)
cells = []
items.each_with_index do |item, i|
cells << cast_item(item).ljust(@widths[i])
end
"| #{cells.join(' | ')} |"
end
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
end
end
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems