Expand and compact @container: @index where value is a graph.

Author: gkellogg

lib/json/ld/compact.rb

@@ -201,7 +201,7 @@ def compact(element, property: nil)
                 # Do not compact using vocabulary-relative, which is not valid for @id
                 compacted_item[al] = context.compact_iri(expanded_item['@id'], vocab: false, quiet: true).to_s
               end
-              if expanded_item.has_key?('@index')
+              if expanded_item.has_key?('@index') && container != '@index'
                 key = context.compact_iri('@index', vocab: true, quiet: true)
                 compacted_item[key] = expanded_item['@index']
               end

spec/compact_spec.rb

@@ -495,6 +495,37 @@
 
     context "@container: @index" do
       {
+        "named graph": {
+          input: %([
+            {
+              "@id": "http://example.com/graphTest",
+              "http://example.org/container": [{
+                "@graph": [{"http://example.org/input": [{"@value": "de"}]}],
+                "@index": "de"
+              }, {
+                "@graph": [{"http://example.org/input": [{"@value": "en"}]}],
+                "@index": "en"
+              }]
+            }
+          ]),
+          context: %({
+            "@context": {
+              "@vocab": "http://example.org/",
+              "container": {"@container": "@index"}
+            }
+          }),
+          output: %({
+            "@context": {
+              "@vocab": "http://example.org/",
+              "container": {"@container": "@index"}
+            },
+            "@id": "http://example.com/graphTest",
+            "container": {
+              "en": {"@graph": [{"input": "en"}]},
+              "de": {"@graph": [{"input": "de"}]}
+            }
+          })
+        },
         "compact-0029" => {
           input: %([{
              "@id": "http://example.com/article",
@@ -1642,6 +1673,7 @@ def run_compact(params)
     input = ::JSON.parse(input) if input.is_a?(String)
     output = ::JSON.parse(output) if output.is_a?(String)
     context = ::JSON.parse(context) if context.is_a?(String)
+    context = context['@context'] if context.has_key?('@context')
     pending params.fetch(:pending, "test implementation") unless input
     if params[:exception]
       expect {JSON::LD::API.compact(input, context, params.merge(logger: logger))}.to raise_error(params[:exception])

spec/expand_spec.rb

@@ -483,6 +483,31 @@
             }
           ]
         },
+        "graph" => {
+          input: %({
+            "@context": {
+              "@vocab": "http://example.org/",
+              "container": {"@container": "@index"}
+            },
+            "@id": "http://example.com/graphTest",
+            "container": {
+              "en": {"@graph": {"input": "en"}},
+              "de": {"@graph": {"input": "de"}}
+            }
+          }),
+          output: %([
+            {
+              "@id": "http://example.com/graphTest",
+              "http://example.org/container": [{
+                "@graph": [{"http://example.org/input": [{"@value": "de"}]}],
+                "@index": "de"
+              }, {
+                "@graph": [{"http://example.org/input": [{"@value": "en"}]}],
+                "@index": "en"
+              }]
+            }
+          ])
+        },
       }.each do |title, params|
         it(title) {run_expand params}
       end