module Sequel::Dataset::Provenance

Constants

INTERNAL
RUBY_STDLIB
SEQUEL_LIB_PATH

Public Instance Methods

clone(opts = nil || (return self)) click to toggle source

Include provenance information when cloning datasets.

Calls superclass method
# File lib/sequel/extensions/provenance.rb, line 44
def clone(opts = nil || (return self))
  super(provenance_opts(opts))
end

Private Instance Methods

provenance_opts(opts) click to toggle source

Return a copy of opts with provenance information added.

# File lib/sequel/extensions/provenance.rb, line 86
def provenance_opts(opts)
  provenance = {source: provenance_source, keys: opts.keys.freeze}.freeze
  opts = opts.dup
  opts[:provenance] = ((@opts[:provenance] || EMPTY_ARRAY).dup << provenance).freeze
  opts
end
provenance_source() click to toggle source

Return the caller line for the provenance change. This skips Sequel itself and the standard library. Additional locations can be skipped using the :provenance_caller_ignore Dataset option.

# File lib/sequel/extensions/provenance.rb, line 96
def provenance_source
  ignore = db.opts[:provenance_caller_ignore]
  caller.find do |line|
    !(line.start_with?(SEQUEL_LIB_PATH) ||
      line.start_with?(RUBY_STDLIB) ||
      line.start_with?(INTERNAL) ||
      (ignore && line =~ ignore))
  end
end