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(require 'ruby-mode)

(add-to-list 'auto-mode-alist
             '("\\.\\(?:cap\\|gemspec\\|irbrc\\|gemrc\\|rake\\|rb\\|ru\\|thor\\)\\'" . ruby-mode))

;; Ruby mode                                                         
(add-hook 'ruby-mode-hook 'robe-mode)
(add-hook 'ruby-mode-hook 'company-mode)
(add-hook 'ruby-mode-hook 'electric-pair-mode)

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tjohnson@hopper:~/src/hyrax$ bundle exec rake engine_cart:regenerate
Removing sample rails app
      create  
/home/tjohnson/.rbenv/versions/2.5.3/lib/ruby/2.5.0/fileutils.rb:122: warning: conflicting chdir during another chdir block
      create  README.md
      create  Rakefile
      create  config.ru
      create  .gitignore
      create  Gemfile
         run  git init from "."

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class MyActor < Hyrax::Actors::AbstractActor
  def create(env)
    titlilze(env, attribute: :title) && next_actor.create(env)
  end
  
  private
  
    def titlize(env, attribute:)
      env.attributes[:attribute] = env.attributes[:attribute].map(&:titlize)
    end

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class Circle
  def intialize
    @circle = self
  end
end

require 'active_support/core_ext/object/json'

Circle.new.as_json
# SystemStackError: stack level too deep

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Running RuboCop...
Inspecting 531 files
...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

531 files inspected, no offenses detected
      create  
      create  README.md
      create  Rakefile
      create  config.ru
      create  .gitignore

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Done generating test app
rake aborted!
Failed to execute solr create: 
ERROR: 
Core 'hydra-test' already exists!
Checked core existence using Core API command:
http://localhost:53179/solr/admin/cores?action=STATUS&core=hydra-test

. Further information may be available in /tmp/solr-6.3.0/logs
/home/tjohnson/src/hydra/curation_concerns/Rakefile:24:in `block (2 levels) in <top (required)>'

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require 'rdf'
require 'rdf/spec'

statements = RDF::Spec.quads
statements.extend(RDF::Enumerable, RDF::Queryable)

statements.count # => 95

pattern = RDF::Query::Pattern.new(nil, nil, nil, graph_name: false)

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[package]
name = "hello_server"
version = "0.1.0"
authors = ["Tom Johnson <n0reply@uw.edu>"]

[dependencies]
hyper        = "~0.9.7"
log          = "*"
env_logger   = "*"

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Threading

While our new RDF::Repository implementation theoretically improves the concurrency story for RDF.rb, it isn't, in itself, thread safe. The underlying data representation may be purely functional, but the Repository itself is swimming in shared mutable state. Specifically, we have the potential for a data race during execution of code like @data = data; and, more generally, for race conditions wherever our changes depend on previous reads. Notably, this affects #transaction, as demonstrated in the following snippet:

require 'rdf'
repo = RDF::Repository.new

threads = []
err_count = 0

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require 'rdf/turtle'
require 'json/ld'

g = RDF::Graph.load('http://json-ld.org/test-suite/reports/ruby-earl.ttl')
File.open('ruby-earl.json', 'w') { |file| file.write(g.dump(:jsonld, standard_prefixes: true)) }
File.open('ruby-earl.nt', 'w') { |file| file.write(g.dump(:ntriples)) }