class Sequel::ToDot

  1. lib/sequel/extensions/to_dot.rb
Parent: Sequel

Methods

Public Class

  1. new
  2. output

Public Instance

  1. output

Classes and Modules

  1. Sequel::ToDot::DatasetMethods

Constants

TO_DOT_OPTIONS = [:with, :distinct, :select, :from, :join, :where, :group, :having, :compounds, :order, :limit, :offset, :lock].freeze  

The option keys that should be included in the dot output.

Public Class methods

new (ds)

Given a Dataset, parse the internal structure to generate a dataset visualization.

[show source] 
# File lib/sequel/extensions/to_dot.rb, line 32
def initialize(ds)
  @i = 0
  @stack = [@i]
  @dot = ["digraph G {", "0 [label=\"self\"];"]
  v(ds, "")
  @dot << "}"
end
output (ds)

Given a Dataset, return a string in dot format that will generate a visualization of the dataset.

[show source] 
# File lib/sequel/extensions/to_dot.rb, line 26
def self.output(ds)
  new(ds).output
end

Public Instance methods

output ()

Output the dataset visualization as a string in dot format.

[show source] 
# File lib/sequel/extensions/to_dot.rb, line 41
def output
  @dot.join("\n")
end