Finish 0.5.2

.travis.yml

@@ -1,14 +1,17 @@
 language: ruby
 bundler_args: --without debug
 script: "bundle exec rspec spec"
-before_install: "gem update --system"
+before_install: 
+  - 'gem update --system --conservative || (gem i "rubygems-update:~>2.7" --no-document && update_rubygems)'
+  - 'gem update bundler --conservative'
 env:
   - CI=true
 rvm:
-  - 2.2
+  - 2.2.2
   - 2.3
   - 2.4
   - 2.5
+  - 2.6
   - jruby-9
   - rbx-3
 cache: bundler

CONTRIBUTING.md

@@ -6,7 +6,7 @@ Community contributions are essential for keeping Ruby RDF great. We want to kee
 
 This repository uses [Git Flow](https://github.com/nvie/gitflow) to manage development and release activity. All submissions _must_ be on a feature branch based on the _develop_ branch to ease staging and integration.
 
-* create or respond to an issue on the [Github Repository](http://github.com/ruby-rdf/rdf-reasoner/issues)
+* create or respond to an issue on the [Github Repository](https://githubhub.com/ruby-rdf/rdf-reasoner/issues)
 * Fork and clone the repo:
   `git clone git@github.com:your-username/rdf-reasoner.git`
 * Install bundle:
@@ -30,7 +30,7 @@ This repository uses [Git Flow](https://github.com/nvie/gitflow) to manage devel
   of thumb, additions larger than about 15 lines of code), we need an
   explicit [public domain dedication][PDD] on record from you.
 
-[YARD]:    http://yardoc.org/
-[YARD-GS]: http://rubydoc.info/docs/yard/file/docs/GettingStarted.md
-[PDD]:     http://lists.w3.org/Archives/Public/public-rdf-ruby/2010May/0013.html
+[YARD]:    https://yardoc.org/
+[YARD-GS]: https://rubydoc.info/docs/yard/file/docs/GettingStarted.md
+[PDD]:     https://lists.w3.org/Archives/Public/public-rdf-ruby/2010May/0013.html
 [pr]:      https://github.com/ruby-rdf/rdf-reasoner/compare/

Gemfile

@@ -1,4 +1,4 @@
-source "http://rubygems.org"
+source "https://rubygems.org"
 
 gemspec
 
@@ -23,8 +23,3 @@ group :debug do
   gem "redcarpet",      platforms: :ruby
   gem "byebug",         platforms: :mri
 end
-
-platforms :rbx do
-  gem 'rubysl', '~> 2.0'
-  gem 'rubinius', '~> 2.0'
-end

README.md

@@ -8,6 +8,7 @@ Reasons over RDFS/OWL vocabularies and schema.org to generate statements which a
 * Entail `rdfs:subPropertyOf` generating an array of terms which are ancestors of the subject.
 * Entail `rdfs:domain` and `rdfs:range` adding `rdf:type` assertions on the subject or object.
 * Inverse `rdfs:subClassOf` entailment, to find descendant classes of the subject term.
+* Inverse `rdfs:subPropertyOf` entailment, to find descendant properties of the subject term.
 * Entail `owl:equivalentClass` generating an array of terms equivalent to the subject.
 * Entail `owl:equivalentProperty` generating an array of terms equivalent to the subject.
 * `domainCompatible?` determines if a particular resource is compatible with the domain definition of a given predicate, based on the intersection of entailed subclasses with the property domain.
@@ -51,7 +52,7 @@ Domain and Range entailment include specific rules for schema.org vocabularies.
 
     RDF::Reasoner.apply(:rdfs)
     graph = RDF::Graph.load("etc/doap.ttl")
-    subj = RDF::URI("http://rubygems.org/gems/rdf-reasoner")
+    subj = RDF::URI("https://rubygems.org/gems/rdf-reasoner")
     RDF::Vocab::DOAP.name.domain_compatible?(subj, graph) # => true
 
 ### Determine if a resource is compatible with the ranges of a property
@@ -103,16 +104,16 @@ The `rdf` command-line interface is extended with `entail` and `lint` commands.
 
 ## Dependencies
 
-* [Ruby](http://ruby-lang.org/) (>= 2.2.2)
-* [RDF.rb](http://rubygems.org/gems/rdf) (~> 3.0)
+* [Ruby](https://ruby-lang.org/) (>= 2.2.2)
+* [RDF.rb](https://rubygems.org/gems/rdf) (~> 3.0)
 
 ## Mailing List
 
-* <http://lists.w3.org/Archives/Public/public-rdf-ruby/>
+* <https://lists.w3.org/Archives/Public/public-rdf-ruby/>
 
 ## Authors
 
-* [Gregg Kellogg](http://github.com/gkellogg) - <http://greggkellogg.net/>
+* [Gregg Kellogg](https://githubhub.com/gkellogg) - <https://greggkellogg.net/>
 
 ## Contributing
 
@@ -132,17 +133,17 @@ The `rdf` command-line interface is extended with `entail` and `lint` commands.
 ## License
 
 This is free and unencumbered public domain software. For more information,
-see <http://unlicense.org/> or the accompanying {file:UNLICENSE} file.
-
-[Ruby]:             http://ruby-lang.org/
-[RDF]:              http://www.w3.org/RDF/
-[YARD]:             http://yardoc.org/
-[YARD-GS]:          http://rubydoc.info/docs/yard/file/docs/GettingStarted.md
-[PDD]:              http://lists.w3.org/Archives/Public/public-rdf-ruby/2010May/0013.html
-[SPARQL]:           http://en.wikipedia.org/wiki/SPARQL
-[SPARQL Query]:     http://www.w3.org/TR/2013/REC-sparql11-query-20130321/
-[SPARQL Entailment]:http://www.w3.org/TR/sparql11-entailment/
-[RDF 1.1]:          http://www.w3.org/TR/rdf11-concepts
-[RDF.rb]:           http://www.rubydoc.info/github/ruby-rdf/rdf/
-[RDF Schema]:       http://www.w3.org/TR/rdf-schema/
+see <https://unlicense.org/> or the accompanying {file:UNLICENSE} file.
+
+[Ruby]:             https://ruby-lang.org/
+[RDF]:              https://www.w3.org/RDF/
+[YARD]:             https://yardoc.org/
+[YARD-GS]:          https://rubydoc.info/docs/yard/file/docs/GettingStarted.md
+[PDD]:              https://lists.w3.org/Archives/Public/public-rdf-ruby/2010May/0013.html
+[SPARQL]:           https://en.wikipedia.org/wiki/SPARQL
+[SPARQL Query]:     https://www.w3.org/TR/2013/REC-sparql11-query-20130321/
+[SPARQL Entailment]:https://www.w3.org/TR/sparql11-entailment/
+[RDF 1.1]:          https://www.w3.org/TR/rdf11-concepts
+[RDF.rb]:           https://www.rubydoc.info/github/ruby-rdf/rdf/
+[RDF Schema]:       https://www.w3.org/TR/rdf-schema/
 [Rack]:             https://rack.github.io/

UNLICENSE

@@ -21,4 +21,4 @@ OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 OTHER DEALINGS IN THE SOFTWARE.
 
-For more information, please refer to <http://unlicense.org/>
+For more information, please refer to <https://unlicense.org/>

VERSION

@@ -1 +1 @@
-0.5.1
+0.5.2

etc/doap.ttl

@@ -7,9 +7,9 @@
 @prefix ex:   <http://example.org/> .
 @prefix xsd:  <http://www.w3.org/2001/XMLSchema#> .
 
-<http://rubygems.org/gems/rdf-reasoner> a doap:Project, earl:TestSubject, earl:Software ;
+<https://rubygems.org/gems/rdf-reasoner> a doap:Project, earl:TestSubject, earl:Software ;
   doap:name          "RDF::Reasoner" ;
-  doap:homepage      <http://ruby-rdf.github.com/rdf-reasoner> ;
+  doap:homepage      <https://ruby-rdf.github.com/rdf-reasoner> ;
   doap:license       <http://creativecommons.org/licenses/publicdomain/> ;
   doap:shortdesc     "RDFS/OWL/Schema.org Reasoner for RDF.rb."@en ;
   doap:description   """
@@ -25,14 +25,14 @@
                      <http://www.w3.org/TR/rdf-schema/> ;
   doap:category      <http://dbpedia.org/resource/Resource_Description_Framework>,
                      <http://dbpedia.org/resource/Ruby_(programming_language)> ;
-  doap:download-page <http://rubygems.org/gems/rdf-reasoner> ;
+  doap:download-page <https://rubygems.org/gems/rdf-reasoner> ;
   doap:mailing-list  <http://lists.w3.org/Archives/Public/public-rdf-ruby/> ;
-  doap:bug-database  <http://github.com/ruby-rdf/rdf-reasoner/issues> ;
-  doap:blog          <http://greggkellogg.net/> ;
-  doap:developer     <http://greggkellogg.net/foaf#me> ;
-  doap:maintainer    <http://greggkellogg.net/foaf#me> ;
-  doap:documenter    <http://greggkellogg.net/foaf#me> ;
-  foaf:maker         <http://greggkellogg.net/foaf#me> ;
+  doap:bug-database  <https://githubhub.com/ruby-rdf/rdf-reasoner/issues> ;
+  doap:blog          <https://greggkellogg.net/> ;
+  doap:developer     <https://greggkellogg.net/foaf#me> ;
+  doap:maintainer    <https://greggkellogg.net/foaf#me> ;
+  doap:documenter    <https://greggkellogg.net/foaf#me> ;
+  foaf:maker         <https://greggkellogg.net/foaf#me> ;
   dc:title           "RDF::Reasoner" ;
   dc:description     """
     Reasons over RDFS/OWL vocabularies to generate statements which are
@@ -42,8 +42,8 @@
     SPARQL Entailment Regimes.
   """@en ;
   dc:date            "2014-06-01"^^xsd:date ;
-  dc:creator         <http://greggkellogg.net/foaf#me> ;
-  dc:isPartOf        <http://rubygems.org/gems/rdf> .
+  dc:creator         <https://greggkellogg.net/foaf#me> ;
+  dc:isPartOf        <https://rubygems.org/gems/rdf> .
 
-<http://greggkellogg.net/foaf#me> a foaf:Person, foaf:Agent, dc:Agent;
+<https://greggkellogg.net/foaf#me> a foaf:Person, foaf:Agent, dc:Agent;
    foaf:name        "Gregg Kellogg".

lib/rdf/reasoner.rb

@@ -7,7 +7,7 @@ module RDF
   # RDFS/OWL reasonsing for RDF.rb.
   #
   # @see http://www.w3.org/TR/2013/REC-sparql11-entailment-20130321/
-  # @author [Gregg Kellogg](http://greggkellogg.net/)
+  # @author [Gregg Kellogg](https://greggkellogg.net/)
   module Reasoner
     require 'rdf/reasoner/format'
     autoload :OWL,     'rdf/reasoner/owl'

lib/rdf/reasoner/format.rb

@@ -5,7 +5,7 @@ module RDF::Reasoner
   # @example Obtaining an LD Patch format class
   #     RDF::Format.for(:reasoner)           #=> RDF::Reasoner::Format
   #
-  # @see http://www.w3.org/TR/ldpatch/
+  # @see https://www.w3.org/TR/ldpatch/
   class Format < RDF::Format
 
     ##

lib/rdf/reasoner/rdfs.rb

@@ -34,6 +34,20 @@ def subPropertyOf_cache
       @@subPropertyOf_cache ||= RDF::Util::Cache.new(-1)
     end
 
+    ##
+    # @return [RDF::Util::Cache]
+    # @private
+    def subProperty_cache
+      @@subProperty_cache ||= RDF::Util::Cache.new(-1)
+    end
+
+    ##
+    # @return [RDF::Util::Cache]
+    # @private
+    def descendant_property_cache
+      @@descendant_property_cache ||= RDF::Util::Cache.new(-1)
+    end
+
     ##
     # For a Term: yield or return inferred subClassOf relationships by recursively applying to named super classes to get a complete set of classes in the ancestor chain of this class
     # For a Statement: if predicate is `rdf:types`, yield or return inferred statements having a subClassOf relationship to the type of this statement
@@ -139,6 +153,50 @@ def _entail_subPropertyOf
       end
     end
 
+    ##
+    # For a Term: yield or return inferred subProperty relationships
+    # by recursively applying to named subproperties to get a complete
+    # set of properties in the descendant chain of this property
+    #
+    # For a Statement: this is a no-op, as it's not useful in this context
+    # @private
+
+    def _entail_subProperty
+      case self
+      when RDF::URI, RDF::Node
+        unless property?
+          yield self if block_given?
+          return Array(self)
+        end
+
+        terms = descendant_property_cache[self] ||= (
+          Array(self.subProperty).map do |c|
+            c._entail_subProperty rescue c
+          end.flatten + Array(self)).compact
+
+        terms.each {|t| yield t } if block_given?
+        terms
+      else []
+      end
+    end
+
+    ##
+    # Get the immediate subproperties of this property.
+    #
+    # This iterates over terms defined in the vocabulary of this term,
+    # as well as the vocabularies imported by this vocabulary.
+    # @return [Array<RDF::Vocabulary::Term>]
+    def subProperty
+      raise RDF::Reasoner::Error,
+        "#{self} Can't entail subProperty" unless property?
+      vocabs = [self.vocab] + self.vocab.imported_from
+      subProperty_cache[self] ||= vocabs.map do |v|
+        Array(v.properties).select do |p|
+          p.property? && Array(p.subPropertyOf).include?(self)
+        end
+      end.flatten.compact
+    end
+
     ##
     # For a Statement: yield or return inferred statements having an rdf:type of the domain of the statement predicate
     # @todo Should be able to entail owl:unionOf, which is a BNode. This should be allowed, and also add BNode values of that node, recursively, similar to SPARQL concise_bounded_description.uu
@@ -303,6 +361,7 @@ def self.included(mod)
       mod.add_entailment :subClassOf, :_entail_subClassOf
       mod.add_entailment :subClass, :_entail_subClass
       mod.add_entailment :subPropertyOf, :_entail_subPropertyOf
+      mod.add_entailment :subProperty, :_entail_subProperty
       mod.add_entailment :domain, :_entail_domain
       mod.add_entailment :range, :_entail_range
     end
@@ -319,4 +378,4 @@ def self.included(mod)
 
   # Extend Mutable with these methods
   ::RDF::Mutable.send(:include, RDFS)
-end
+end

rdf-reasoner.gemspec

@@ -6,7 +6,7 @@ Gem::Specification.new do |gem|
   gem.date               = File.mtime('VERSION').strftime('%Y-%m-%d')
 
   gem.name               = "rdf-reasoner"
-  gem.homepage           = "http://github.com/gkellogg/rdf-reasoner"
+  gem.homepage           = "https://githubhub.com/gkellogg/rdf-reasoner"
   gem.license            = 'Unlicense'
   gem.summary            = "RDFS/OWL Reasoner for RDF.rb"
 
@@ -16,7 +16,6 @@ Gem::Specification.new do |gem|
   gem.platform           = Gem::Platform::RUBY
   gem.files              = %w(AUTHORS README.md UNLICENSE VERSION) + Dir.glob('lib/**/*.rb')
   gem.require_paths      = %w(lib)
-  gem.has_rdoc           = false
   gem.description        = %(Reasons over RDFS/OWL vocabularies to generate statements
                              which are entailed based on base RDFS/OWL rules along with
                              vocabulary information. It can also be used to ask specific
@@ -32,10 +31,9 @@ Gem::Specification.new do |gem|
 
   gem.add_development_dependency 'rdf-spec',        '~> 3.0'
   gem.add_development_dependency 'rdf-turtle',      '~> 3.0'
-  #gem.add_development_dependency 'json-ld',         '~> 3.0'
-  gem.add_development_dependency 'json-ld',         '>= 2.2', '< 4.0'
+  gem.add_development_dependency 'json-ld',         '~> 3.0'
   gem.add_development_dependency 'equivalent-xml',  '~> 0.6'
-  gem.add_development_dependency 'rspec',           '~> 3.7'
-  gem.add_development_dependency 'yard' ,           '~> 0.9.12'
+  gem.add_development_dependency 'rspec',           '~> 3.8'
+  gem.add_development_dependency 'yard' ,           '~> 0.9.19'
   gem.post_install_message       = nil
 end

spec/rdfs_spec.rb

@@ -137,6 +137,61 @@
     end
   end
 
+  # XXX this is cribbed from :subClass
+  describe :subProperty do
+    {
+      RDF::Vocab::DC.relation => %w(conformsTo hasFormat hasPart hasVersion
+        isFormatOf isPartOf isReferencedBy isReplacedBy isRequiredBy
+        isVersionOf references relation replaces requires source).map {
+        |t| RDF::Vocab::DC[t] } + %w(derived_from djmix_of mashup_of medley_of
+      remaster_of remix_of sampled_version_of).map {|t| RDF::Vocab::MO[t] },
+      RDF::Vocab::SIOC.space_of => %w(host_of).map {|t| RDF::Vocab::SIOC[t] },
+    }.each do |prop, entails|
+      context prop.pname do
+        describe RDF::Vocabulary::Term do
+          specify {
+            expect(prop.entail(:subProperty).map(&:pname)).to include(
+              *entails.map(&:pname))}
+          specify {
+            expect {|b| prop.entail(:subProperty, &b)
+            }.to yield_control.at_least(entails.length)}
+        end
+
+        # XXX all of these can probably be rolled up too
+
+        stmt = RDF::Statement(RDF::URI('a'), prop, RDF::Literal(true))
+
+        describe RDF::Statement do
+          subject {stmt}
+          let(:results) {entails.map {|r|
+              RDF::Statement(RDF::URI("a"), r, RDF::Literal(true))}}
+          specify {expect(subject.entail(:subProperty)).to be_empty}
+          specify {expect(subject.entail(:subProperty)).to all(be_inferred)}
+          specify {expect {|b|
+              subject.entail(:subProperty, &b)}.not_to yield_control}
+        end
+
+        describe RDF::Enumerable do
+          subject {[stmt].extend(RDF::Enumerable)}
+          specify {
+            expect(subject.entail(:subProperty)).to be_a(RDF::Enumerable)}
+          specify {expect(subject.entail(:subProperty).to_a).to be_empty}
+          specify {
+            expect {|b| subject.entail(:subProperty, &b)}.not_to yield_control}
+        end
+
+        describe RDF::Mutable do
+          subject {RDF::Graph.new << stmt}
+          let(:results) {subject.dup}
+          specify {expect(subject.entail(:subProperty)).to be_a(RDF::Graph)}
+          specify {expect(
+            subject.entail(:subProperty)).to be_equivalent_graph(results)}
+          specify {expect(subject.entail!(:subProperty)).to equal subject}
+        end
+      end
+    end
+  end unless ENV['CI']
+
   describe :domain do
     {
       RDF::Vocab::FOAF.account => [RDF::Vocab::FOAF.Agent],

spec/readme_spec.rb

@@ -25,7 +25,7 @@
     it "Determine if a resource is compatible with the domains of a property" do
       RDF::Reasoner.apply(:rdfs)
       graph = RDF::Graph.load("etc/doap.ttl")
-      subj = RDF::URI("http://rubygems.org/gems/rdf-reasoner")
+      subj = RDF::URI("https://rubygems.org/gems/rdf-reasoner")
       expect(RDF::Vocab::DOAP.name).to be_domain_compatible(subj, graph)
     end
 
@@ -40,7 +40,7 @@
       RDF::Reasoner.apply(:owl)
       graph = RDF::Graph.load("etc/doap.ttl")
       graph.entail!(:equivalentClass)
-      expect(graph).to have_statement(RDF::Statement(RDF::URI("http://greggkellogg.net/foaf#me"), RDF.type, RDF::Vocab::DC.Agent))
+      expect(graph).to have_statement(RDF::Statement(RDF::URI("https://greggkellogg.net/foaf#me"), RDF.type, RDF::Vocab::DC.Agent))
     end
 
     it "Yield all entailed statements for all entailment methods" do