Support for skos:collection

gatsby-node.js

@@ -65,18 +65,18 @@ exports.onPreBootstrap = async ({createContentDigest, actions}) => {
   const ttlFiles = getTurtleFiles('./data', [])
   console.info(`Found these turtle files:`)
   ttlFiles.forEach(e => console.info(e))
-  ttlFiles.forEach(async f => {
+  for (const f of ttlFiles) {
     const ttlString = fs.readFileSync(f).toString()
     const doc = await jsonld.fromRDF(ttlString, { format: 'text/turtle' })
     const compacted = await jsonld.compact(doc, context.jsonld)
     await compacted['@graph'].forEach(graph => {
       const {
         narrower, narrowerTransitive, narrowMatch, broader, broaderTransitive,
         broadMatch, exactMatch, closeMatch, related, relatedMatch,
-        inScheme, topConceptOf, hasTopConcept, ...properties
+        inScheme, topConceptOf, hasTopConcept, member, ...properties
       } = graph
       const type = Array.isArray(properties.type)
-        ? properties.type.find(t => ['Concept', 'ConceptScheme'])
+        ? properties.type.find(t => ['Concept', 'ConceptScheme', 'Collection'])
         : properties.type
       const node = {
         ...properties,
@@ -99,14 +99,15 @@ exports.onPreBootstrap = async ({createContentDigest, actions}) => {
         internal: {
           contentDigest: createContentDigest(graph),
           type,
-        }
+        },
+        member___NODE: (member || []).map(member => member.id)
       }
       if (type === 'Concept') {
         Object.assign(node, {})
       }
-      ['Concept', 'ConceptScheme'].includes(type) && createNode(node)
+      ['Concept', 'ConceptScheme', 'Collection'].includes(type) && createNode(node)
     })
-  })
+  }
 }
 
 exports.sourceNodes = async ({ actions }) => {
@@ -115,7 +116,56 @@ exports.sourceNodes = async ({ actions }) => {
 }
 
 exports.createPages = async ({ graphql, actions: { createPage } }) => {
-  const actorUrlTemplate = urlTemplate.parse(process.env.ACTOR)
+
+  const memberOf = {}
+
+  // Build collection pages
+  const collections = await graphql(queries.allCollection(languages))
+  await Promise.all(collections.data.allCollection.edges.map(async ({ node: collection }) => {
+    const indexes = Object.fromEntries([...languages].map(l => {
+      const index = flexsearch.create({
+        tokenize: "full",
+      })
+      index.addMatcher({
+        '[Ää]': "a", // replaces all 'ä' to 'a'
+        '[Öö]': "o",
+        '[Üü]': "u",
+      })
+      return [l, index]
+    }))
+
+    // store collection membership for concepts
+    collection.member.forEach((m) => {
+      if (memberOf.hasOwnProperty(m.id)) {
+        memberOf[m.id].push(collection);
+      } else {
+        memberOf[m.id] = [collection];
+      }
+    })
+
+    const json = omitEmpty(Object.assign({}, collection, context.jsonld))
+    const jsonld = omitEmpty(Object.assign({}, collection, context.jsonld))
+    languages.forEach(language => createPage({
+      path: getFilePath(collection.id, `${language}.html`),
+      component: path.resolve(`./src/components/Collection.js`),
+      context: {
+        language,
+        languages: Array.from(languages),
+        node: collection,
+        baseURL: process.env.BASEURL || ''
+      }
+    }))
+    createData({
+      path: getFilePath(collection.id, 'json'),
+      data: JSON.stringify(json, null, 2)
+    })
+    createData({
+      path: getFilePath(collection.id, 'jsonld'),
+      data: JSON.stringify(jsonld, null, 2)
+    })
+    languages.forEach(language => indexes[language].add(collection.id, i18n(language)(collection.prefLabel)))
+  }))
+
   const conceptSchemes = await graphql(queries.allConceptScheme(languages))
 
   conceptSchemes.errors && console.error(conceptSchemes.errors)
@@ -151,6 +201,7 @@ exports.createPages = async ({ graphql, actions: { createPage } }) => {
             language,
             languages: Array.from(languages),
             node: concept,
+            collections: memberOf.hasOwnProperty(concept.id) ? memberOf[concept.id] : [],
             baseURL: process.env.BASEURL || ''
           }
         }))

src/components/Collection.js

@@ -0,0 +1,26 @@
+/** @jsx jsx */
+import { jsx } from '@emotion/react'
+import { Link } from 'gatsby'
+import { i18n, getFilePath } from '../common'
+import JsonLink from './JsonLink'
+
+const Collection = ({ pageContext: { node: collection, language, baseURL } }) => (
+  <div className="content block">
+    <h1>{i18n(language)(collection.prefLabel)}</h1>
+    <h2>{collection.id}</h2>
+    <JsonLink to={baseURL + getFilePath(collection.id, "json")} />
+      <ul>
+        {
+          collection.member.map((member) => (
+            <li key={member.id}>
+              <Link to={getFilePath(member.id, `${language}.html`)}>
+                {i18n(language)(member.prefLabel)}
+              </Link>
+            </li>
+          ))
+        }
+        </ul>
+  </div>
+)
+
+export default Collection

src/components/Concept.js

@@ -6,7 +6,7 @@ import JsonLink from './JsonLink'
 
 import { i18n, getDomId, getFilePath } from '../common'
 
-const Concept = ({ pageContext: { node: concept, language, baseURL } }) => (
+const Concept = ({ pageContext: { node: concept, language, collections, baseURL } }) => (
   <div className="content block" id={getDomId(concept.id)}>
     <h1>
       {concept.notation &&
@@ -140,6 +140,20 @@ const Concept = ({ pageContext: { node: concept, language, baseURL } }) => (
         </ul>
       </div>
     )}
+      {collections && collections.length > 0 && (
+        <div className="collections">
+            <h3>in Collections</h3>
+            <ul>
+                {collections.map((collection) => (
+                  <li key={collection.id}>
+                      <Link to={getFilePath(collection.id, `${language}.html`)}>
+                          {i18n(language)(collection.prefLabel)}
+                      </Link>
+                  </li>
+                ))}
+            </ul>
+        </div>
+      )}
   </div>
 )
 

src/queries.js

@@ -1,3 +1,25 @@
+module.exports.allCollection = (languages) => `
+{
+  allCollection {
+    edges {
+      node {
+        id
+        type
+        prefLabel {
+            ${[...languages].join(' ')}
+        }
+        member {
+          id
+          prefLabel {
+            ${[...languages].join(' ')}
+          }
+        }
+      }
+    }
+  }
+}
+`
+
 module.exports.allConcept = (inScheme, languages) => `
   {
     allConcept(

src/templates/App.js

@@ -13,7 +13,7 @@ import SEO from '../components/seo'
 import { style } from '../styles/concepts.css.js'
 
 const App = ({pageContext, children}) => {
-  const conceptSchemeId = pageContext.node.type === 'ConceptScheme'
+  const conceptSchemeId = (pageContext.node.type === 'ConceptScheme' || pageContext.node.type === 'Collection')
     ? pageContext.node.id
     : pageContext.node.inScheme.id
   const [index, setIndex] = useState(FlexSearch.create())
@@ -28,7 +28,7 @@ const App = ({pageContext, children}) => {
         const idx = FlexSearch.create()
         // add custom matcher to match umlaute at beginning of string
         idx.addMatcher({
-          '[Aä]': "a", // replaces all 'ä' to 'a'
+          '[Ää]': "a", // replaces all 'ä' to 'a'
           '[Öö]': "o",
           '[Üü]': "u",
         })

src/types.js

@@ -1,4 +1,11 @@
 module.exports = (languages) => `
+
+  type Collection implements Node {
+    type: String,
+    prefLabel: LanguageMap,
+    member: [Concept] @link(from: "member___NODE")
+  }
+
   type ConceptScheme implements Node {
     type: String,
     title: LanguageMap,