Vocabulary spec: Add property 'previousVersions'

2 files changed, 42 insertions, 3 deletions

diff --git a/rdf/context.jsonld b/rdf/context.jsonld
index e42b6ff..53559bb 100644
--- a/rdf/context.jsonld
+++ b/rdf/context.jsonld
@@ -17,12 +17,19 @@
         "earlyItems": {
             "@id": "forge:earlyItems",
             "@type": "@id" },
+        "previousVersions": {
+            "@id": "forge:previousVersions",
+            "@type": "@id",
+            "@container": "@list" },
         "assignedTo": {
             "@id": "forge:assignedTo",
             "@type": "@id" },
         "isResolved": {
             "@id": "forge:isResolved",
             "@type": "xsd:boolean" },
+        "resolvedBy": {
+            "@id": "forge:resolvedBy",
+            "@type": "@id" },
         "dependsOn": {
             "@id": "forge:dependsOn",
             "@type": "@id" },
@@ -59,9 +66,6 @@
         "ref": {
             "@id": "forge:ref",
             "@type": "xsd:string" },
-        "resolvedBy": {
-            "@id": "forge:resolvedBy",
-            "@type": "@id" },
         "team": {
             "@id": "forge:team",
             "@type": "@id" },
diff --git a/spec/vocabulary.md b/spec/vocabulary.md
index 8b79325..6740e0d 100644
--- a/spec/vocabulary.md
+++ b/spec/vocabulary.md
@@ -297,6 +297,41 @@ examle, if `items` lists items in reverse chronogical order, then so does
 }
 ```
 
+## previousVersions {#prop-previousversions}
+
+**URI:** `https://forgefed.peers.community/ns#previousVersions`
+
+**Notes** Specifies the previous versions of the subject, as an ordered list in
+reverse chronological order.
+
+**Domain:** [Object][]
+
+**Range:** `rdf:List` of objects of the same `@type` as the subject
+
+**Functional:** Yes
+
+**Inverse of:** (None)
+
+**Example:**
+
+```json
+{
+    "@context": [
+        "https://www.w3.org/ns/activitystreams",
+        "https://forgefed.peers.community/ns"
+    ],
+    "id": "https://dev.example/aviva/notes/107",
+    "type": "Note",
+    "attributedTo": "https://dev.example/aviva",
+    "content": "I agree!",
+    "previousVersions": [
+       "https://dev.example/aviva/notes/107_old_version",
+       "https://dev.example/aviva/notes/107_very_old_version",
+       "https://dev.example/aviva/notes/107_ancient_version"
+    ]
+}
+```
+
 ## assignedTo {#prop-assignedto}
 
 **URI:** `https://forgefed.peers.community/ns#assignedTo`