0.67.0

CHANGELOG.md

@@ -1,3 +1,28 @@
+## [0.66.1](https://gitlab.com/openstapps/core/compare/v0.66.0...v0.66.1) (2022-05-27)
+
+
+
+# [0.66.0](https://gitlab.com/openstapps/core/compare/v0.65.1...v0.66.0) (2022-05-11)
+
+
+### Features
+
+* add geo filter envelope support ([484be6a](https://gitlab.com/openstapps/core/commit/484be6a890d743601efa5d40d33ea2c619f3126d))
+
+
+
+## [0.65.1](https://gitlab.com/openstapps/core/compare/v0.65.0...v0.65.1) (2022-04-04)
+
+
+
+# [0.65.0](https://gitlab.com/openstapps/core/compare/v0.64.0...v0.65.0) (2022-04-04)
+
+
+
+# [0.64.0](https://gitlab.com/openstapps/core/compare/v0.63.0...v0.64.0) (2022-03-21)
+
+
+
 # [0.63.0](https://gitlab.com/openstapps/core/compare/v0.62.0...v0.63.0) (2022-01-24)
 
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@openstapps/core",
-  "version": "0.64.0",
+  "version": "0.67.0",
   "description": "StAppsCore - Generalized model of data",
   "keywords": [
     "Model",
@@ -18,7 +18,7 @@
     "changelog": "conventional-changelog -p angular -i CHANGELOG.md -s -r 0 && git add CHANGELOG.md && git commit -m 'docs: update changelog'",
     "check-configuration": "openstapps-configuration",
     "compile": "rimraf lib && tsc",
-    "documentation": "typedoc --name \"@openstapps/core\" --includeVersion --out docs --readme README.md --listInvalidSymbolLinks src",
+    "documentation": "typedoc --name \"@openstapps/core\" --includeVersion --out docs --readme README.md --listInvalidSymbolLinks --entryPointStrategy expand src",
     "pack": "openstapps-core-tools pack",
     "postversion": "npm run changelog",
     "prepublishOnly": "npm ci && npm run build",
@@ -45,39 +45,39 @@
     "Wieland Schöbl"
   ],
   "dependencies": {
-    "@openstapps/core-tools": "0.29.0",
+    "@openstapps/core-tools": "0.30.1",
     "@types/geojson": "1.0.6",
     "@types/json-patch": "0.0.30",
-    "@types/json-schema": "7.0.10",
-    "@types/node": "14.18.3",
-    "fast-clone": "1.5.13",
+    "@types/json-schema": "7.0.11",
+    "@types/node": "14.18.18",
     "fast-deep-equal": "3.1.3",
     "http-status-codes": "2.2.0",
     "json-patch": "0.7.0",
     "json-schema": "0.4.0",
+    "rfdc": "1.3.0",
     "ts-optchain": "0.1.8"
   },
   "devDependencies": {
-    "@openstapps/configuration": "0.29.0",
-    "@openstapps/es-mapping-generator": "0.0.4",
-    "@openstapps/logger": "0.8.0",
+    "@openstapps/configuration": "0.29.1",
+    "@openstapps/es-mapping-generator": "0.1.0",
+    "@openstapps/logger": "0.8.1",
     "@testdeck/mocha": "0.2.0",
-    "@types/chai": "4.3.0",
-    "@types/lodash": "4.14.180",
-    "@types/mocha": "9.1.0",
+    "@types/chai": "4.3.1",
+    "@types/lodash": "4.14.182",
+    "@types/mocha": "9.1.1",
     "@types/rimraf": "3.0.2",
     "chai": "4.3.6",
     "conditional-type-checks": "1.0.5",
     "conventional-changelog-cli": "2.2.2",
     "lodash": "4.17.21",
-    "mocha": "9.2.2",
+    "mocha": "10.0.0",
     "nyc": "15.1.0",
     "rimraf": "3.0.2",
     "source-map-support": "0.5.21",
     "surge": "0.23.1",
-    "ts-node": "10.7.0",
+    "ts-node": "10.8.0",
     "tslint": "6.1.3",
-    "typedoc": "0.21.6",
+    "typedoc": "0.22.15",
     "typescript": "4.3.5"
   },
   "nyc": {

src/protocol/search/filters/geo.ts

@@ -13,7 +13,7 @@
  * this program. If not, see <https://www.gnu.org/licenses/>.
  */
 // tslint:disable-next-line:no-implicit-dependencies
-import {Polygon} from 'geojson';
+import {Polygon, Position} from 'geojson';
 import {SCThingsField} from '../../../meta';
 import {SCSearchAbstractFilter, SCSearchAbstractFilterArguments} from '../filter';
 
@@ -29,6 +29,24 @@ export interface SCGeoFilter extends SCSearchAbstractFilter<SCGeoFilterArguments
   type: 'geo';
 }
 
+/**
+ * A rectangular geo shape, representing the top-left and bottom-right corners
+ *
+ * This is an extension of the Geojson type
+ * http://geojson.org/geojson-spec.html
+ */
+export interface Envelope {
+  /**
+   * The top-left and bottom-right corners of the bounding box
+   */
+  coordinates: [Position, Position];
+
+  /**
+   * The type of the geometry
+   */
+  type: 'envelope';
+}
+
 /**
  * Arguments for filter instruction by geo data
  */
@@ -41,7 +59,7 @@ export interface SCGeoFilterArguments extends SCSearchAbstractFilterArguments {
   /**
    * Geo data to check up on
    */
-  shape: Polygon;
+  shape: Polygon | Envelope;
 
   /**
    * Spatial relation between the provided shape and the shape of the field.

src/things/abstract/academic-degree.ts

@@ -61,13 +61,13 @@ export class SCAcademicDegreeMeta
    */
   fieldTranslations = {
     de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.de,
+      ...new SCThingMeta().fieldTranslations.de,
       academicDegree: 'Abschlussgrad',
       academicDegreewithField: 'Abschlussbezeichnung',
       academicDegreewithFieldShort: 'Abschlussbezeichnung (kurz)',
     },
     en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.en,
+      ...new SCThingMeta().fieldTranslations.en,
       academicDegree: 'academic degree',
       academicDegreewithField: 'acedemic degree and discipline',
       academicDegreewithFieldShort: 'acedemic degree and discipline (short)',
@@ -79,10 +79,10 @@ export class SCAcademicDegreeMeta
    */
   fieldValueTranslations = {
     de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.de,
+      ...new SCThingMeta().fieldValueTranslations.de,
     },
     en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.en,
+      ...new SCThingMeta().fieldValueTranslations.en,
     },
   };
 }

src/things/abstract/academic-term.ts

@@ -77,7 +77,7 @@ export class SCAcademicTermWithoutReferencesMeta
    */
   fieldTranslations = {
     de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.de,
+      ...new SCThingMeta().fieldTranslations.de,
       acronym: 'Akronym',
       endDate: 'Enddatum',
       eventsEndDate: 'Enddatum der Veranstaltungen',
@@ -85,7 +85,7 @@ export class SCAcademicTermWithoutReferencesMeta
       startDate: 'Startdatum',
     },
     en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.en,
+      ...new SCThingMeta().fieldTranslations.en,
       acronym: 'acronym',
       endDate: 'end date',
       eventsEndDate: 'end date of events',
@@ -99,10 +99,10 @@ export class SCAcademicTermWithoutReferencesMeta
    */
   fieldValueTranslations = {
     de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.de,
+      ...new SCThingMeta().fieldValueTranslations.de,
     },
     en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.en,
+      ...new SCThingMeta().fieldValueTranslations.en,
     },
   };
 }

src/things/abstract/creative-work.ts

@@ -17,19 +17,13 @@ import {SCISO8601Date} from '../../general/time';
 import {SCOrganizationWithoutReferences} from '../organization';
 import {SCPersonWithoutReferences} from '../person';
 import {SCPublicationEventWithoutReferences} from '../publication-event';
-import {SCThingMeta, SCThingTranslatableProperties, SCThingWithoutReferences} from './thing';
-import {
-  SCAcademicPriceGroup,
-  SCThingThatCanBeOffered, SCThingThatCanBeOfferedMeta,
-  SCThingThatCanBeOfferedTranslatableProperties,
-  SCThingThatCanBeOfferedWithoutReferences,
-} from './thing-that-can-be-offered';
+import {SCThing, SCThingMeta, SCThingTranslatableProperties, SCThingWithoutReferences} from './thing';
 
 /**
  * A creative work without references
  */
 export interface SCCreativeWorkWithoutReferences
-  extends SCThingWithoutReferences, SCThingThatCanBeOfferedWithoutReferences {
+  extends SCThingWithoutReferences {
 
   /**
    * Languages this creative work is available in
@@ -88,7 +82,7 @@ export interface SCCreativeWorkWithoutReferences
  * A creative work
  */
 export interface SCCreativeWork
-  extends SCCreativeWorkWithoutReferences, SCThingThatCanBeOffered<SCAcademicPriceGroup> {
+  extends SCCreativeWorkWithoutReferences, SCThing {
   /**
    * Authors of the creative work
    */
@@ -124,7 +118,7 @@ export interface SCCreativeWork
  * Translatable properties of creative works
  */
 export interface SCCreativeWorkTranslatableProperties
-  extends SCThingTranslatableProperties, SCThingThatCanBeOfferedTranslatableProperties {
+  extends SCThingTranslatableProperties {
   /**
    * Translation of the keywords of the creative work
    *
@@ -143,8 +137,7 @@ export class SCCreativeWorkMeta
    */
   fieldTranslations = {
     de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.de,
-      ...SCThingThatCanBeOfferedMeta.getInstance().fieldTranslations.de,
+      ...new SCThingMeta().fieldTranslations.de,
       name: 'Titel',
       authors: 'beteiligte Personen',
       availableLanguages: 'verfügbare Übersetzungen',
@@ -160,8 +153,7 @@ export class SCCreativeWorkMeta
       sourceOrganization: 'Körperschaft',
     },
     en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.en,
-      ...SCThingThatCanBeOfferedMeta.getInstance().fieldTranslations.en,
+      ...new SCThingMeta().fieldTranslations.en,
       name: 'title',
       authors: 'involved persons',
       availableLanguages: 'available languages',
@@ -183,12 +175,10 @@ export class SCCreativeWorkMeta
    */
   fieldValueTranslations = {
     de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.de,
-      ...SCThingThatCanBeOfferedMeta.getInstance().fieldValueTranslations.de,
+      ...new SCThingMeta().fieldValueTranslations.de,
     },
     en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.en,
-      ...SCThingThatCanBeOfferedMeta.getInstance().fieldValueTranslations.en,
+      ...new SCThingMeta().fieldValueTranslations.en,
     },
   };
 }

src/things/abstract/event.ts

@@ -86,7 +86,7 @@ export class SCEventMeta
    */
   fieldTranslations = {
     de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.de,
+      ...new SCThingMeta().fieldTranslations.de,
       academicTerms: 'Semester',
       catalogs: 'Verzeichnis',
       creativeWorks: 'begleitende Werke',
@@ -96,7 +96,7 @@ export class SCEventMeta
       remainingAttendeeCapacity: 'verfügbare Anzahl an Teilnehmern',
     },
     en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.en,
+      ...new SCThingMeta().fieldTranslations.en,
       academicTerms: 'academic terms',
       catalogs: 'catalogs',
       creativeWorks: 'related material',
@@ -112,10 +112,10 @@ export class SCEventMeta
    */
   fieldValueTranslations = {
     de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.de,
+      ...new SCThingMeta().fieldValueTranslations.de,
     },
     en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.en,
+      ...new SCThingMeta().fieldValueTranslations.en,
     },
   };
 }

src/things/abstract/place.ts

@@ -145,13 +145,13 @@ export class SCPlaceWithoutReferencesMeta
    */
   fieldTranslations = {
     de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.de,
+      ...new SCThingMeta().fieldTranslations.de,
       address: 'Adresse',
       geo: 'Geoinformation',
       openingHours: 'Öffnungszeiten',
     },
     en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.en,
+      ...new SCThingMeta().fieldTranslations.en,
       address: 'address',
       geo: 'geographic information',
       openingHours: 'opening hours',
@@ -163,10 +163,10 @@ export class SCPlaceWithoutReferencesMeta
    */
   fieldValueTranslations = {
     de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.de,
+      ...new SCThingMeta().fieldValueTranslations.de,
     },
     en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.en,
+      ...new SCThingMeta().fieldValueTranslations.en,
     },
   };
 }

src/things/abstract/thing-in-place.ts

@@ -34,11 +34,11 @@ export class SCThingInPlaceMeta
    */
   fieldTranslations = {
     de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.de,
+      ...new SCThingMeta().fieldTranslations.de,
       inPlace: 'Ort',
     },
     en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.en,
+      ...new SCThingMeta().fieldTranslations.en,
       inPlace: 'location',
     },
   };
@@ -48,10 +48,10 @@ export class SCThingInPlaceMeta
    */
   fieldValueTranslations = {
     de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.de,
+      ...new SCThingMeta().fieldValueTranslations.de,
     },
     en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.en,
+      ...new SCThingMeta().fieldValueTranslations.en,
     },
   };
 }

src/things/abstract/thing-that-accepts-payments.ts

@@ -54,11 +54,11 @@ export class SCThingThatAcceptsPaymentsWithoutReferencesMeta
    */
   fieldTranslations = {
     de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.de,
+      ...new SCThingMeta().fieldTranslations.de,
       paymentsAccepted: 'Bezahlmethoden',
     },
     en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.en,
+      ...new SCThingMeta().fieldTranslations.en,
       paymentsAccepted: 'accepted payment methods',
     },
   };
@@ -68,7 +68,7 @@ export class SCThingThatAcceptsPaymentsWithoutReferencesMeta
    */
   fieldValueTranslations = {
     de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.de,
+      ...new SCThingMeta().fieldValueTranslations.de,
       paymentsAccepted: {
         'cafeteria card': 'Mensakarte',
         'cash': 'Bar',
@@ -76,7 +76,7 @@ export class SCThingThatAcceptsPaymentsWithoutReferencesMeta
       },
     },
     en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.en,
+      ...new SCThingMeta().fieldValueTranslations.en,
     },
   };
 }

src/things/abstract/thing-that-can-be-offered.ts

@@ -150,21 +150,16 @@ export type SCThingThatCanBeOfferedAvailability =
 export class SCThingThatCanBeOfferedMeta<T extends SCPriceGroup>
   implements SCMetaTranslations<SCThingThatCanBeOffered<T>> {
 
-  /**
-   * Instance
-   */
-  protected static _instance = new Map<string, unknown>();
-
   /**
    * Translations of fields
    */
   fieldTranslations = {
     de: {
-      ...SCThingMeta.getInstance().fieldTranslations.de,
+      ...new SCThingMeta().fieldTranslations.de,
       offers: 'Angebote',
     },
     en: {
-      ...SCThingMeta.getInstance().fieldTranslations.en,
+      ...new SCThingMeta().fieldTranslations.en,
       offers: 'offers',
     },
   };
@@ -174,26 +169,10 @@ export class SCThingThatCanBeOfferedMeta<T extends SCPriceGroup>
    */
   fieldValueTranslations = {
     de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.de,
+      ...new SCThingMeta().fieldValueTranslations.de,
     },
     en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.en,
+      ...new SCThingMeta().fieldValueTranslations.en,
     },
   };
-
-  // tslint:disable:static-this
-  /**
-   * Function to retrieve typed singleton instance (including generics)
-   */
-  public static getInstance<T extends SCPriceGroup>(): SCThingThatCanBeOfferedMeta<T> {
-    if (!SCThingThatCanBeOfferedMeta._instance.has(this.name)) {
-      SCThingThatCanBeOfferedMeta._instance.set(this.name, new SCThingThatCanBeOfferedMeta<T>());
-    }
-
-    return SCThingThatCanBeOfferedMeta._instance
-      .get(this.name) as SCThingThatCanBeOfferedMeta<T>;
-  }
-
-  protected constructor() {
-  }
 }

src/things/abstract/thing-with-categories.ts

@@ -120,22 +120,17 @@ export interface SCThingWithCategoriesSpecificValues {
 export class SCThingWithCategoriesWithoutReferencesMeta<T, U>
   implements SCMetaTranslations<SCThingWithCategoriesWithoutReferences<T, U>> {
 
-  /**
-   * Instance
-   */
-  protected static _instance = new Map<string, unknown>();
-
   /**
    * Translations of fields
    */
   fieldTranslations = {
     de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.de,
+      ...new SCThingMeta().fieldTranslations.de,
       categories: 'Kategorien',
       categorySpecificValues: 'besondere Kategorien',
     },
     en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.en,
+      ...new SCThingMeta().fieldTranslations.en,
       categories: 'categories',
       categorySpecificValues: 'category with specific values',
     },
@@ -146,27 +141,10 @@ export class SCThingWithCategoriesWithoutReferencesMeta<T, U>
    */
   fieldValueTranslations = {
     de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.de,
+      ...new SCThingMeta().fieldValueTranslations.de,
     },
     en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.en,
+      ...new SCThingMeta().fieldValueTranslations.en,
     },
   };
-
-  // tslint:disable:static-this
-  /**
-   * Function to retrieve typed singleton instance (including generics)
-   */
-  public static getInstance<T, U>(): SCThingWithCategoriesWithoutReferencesMeta<T, U> {
-    if (!SCThingWithCategoriesWithoutReferencesMeta._instance.has(this.name)) {
-      SCThingWithCategoriesWithoutReferencesMeta._instance
-        .set(this.name, new SCThingWithCategoriesWithoutReferencesMeta<T, U>());
-    }
-
-    return SCThingWithCategoriesWithoutReferencesMeta._instance
-      .get(this.name) as SCThingWithCategoriesWithoutReferencesMeta<T, U>;
-  }
-
-  protected constructor() {
-  }
 }

src/things/abstract/thing.ts

@@ -269,11 +269,6 @@ export interface SCThingTranslatablePropertyOrigin {
  * Meta information about things
  */
 export class SCThingMeta implements SCMetaTranslations<SCThing> {
-  /**
-   * Set type definition for singleton instance
-   */
-  protected static _instance = new Map<string, unknown>();
-
   /**
    * Translations of fields
    */
@@ -315,19 +310,4 @@ export class SCThingMeta implements SCMetaTranslations<SCThing> {
       type: 'Thing',
     },
   };
-
-  // tslint:disable:static-this
-  /**
-   * Function to retrieve typed singleton instance
-   */
-  public static getInstance<T extends SCThingMeta>(): T {
-    if (!SCThingMeta._instance.has(this.name)) {
-      SCThingMeta._instance.set(this.name, new this());
-    }
-
-    return SCThingMeta._instance.get(this.name) as T;
-  }
-
-  protected constructor() {
-  }
 }

src/things/academic-event.ts

@@ -128,15 +128,15 @@ export class SCAcademicEventMeta
    */
   fieldTranslations = {
     de: {
-      ...SCEventMeta.getInstance<SCEventMeta>().fieldTranslations.de,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCAcademicEventCategories,
+      ...new SCEventMeta().fieldTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCAcademicEventCategories,
         SCThingWithCategoriesSpecificValues>().fieldTranslations.de,
       majors: 'Hauptfächer',
       originalCategory: 'ursprüngliche Kategorie',
     },
     en: {
-      ...SCEventMeta.getInstance<SCEventMeta>().fieldTranslations.en,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCAcademicEventCategories,
+      ...new SCEventMeta().fieldTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCAcademicEventCategories,
         SCThingWithCategoriesSpecificValues>().fieldTranslations.en,
       majors: 'majors',
       originalCategory: 'original category',
@@ -148,8 +148,8 @@ export class SCAcademicEventMeta
    */
   fieldValueTranslations = {
     de: {
-      ...SCEventMeta.getInstance<SCEventMeta>().fieldValueTranslations.de,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCAcademicEventCategories,
+      ...new SCEventMeta().fieldValueTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCAcademicEventCategories,
         SCThingWithCategoriesSpecificValues>().fieldValueTranslations.de,
       categories: {
         'colloquium': 'Kolloquium',
@@ -171,8 +171,8 @@ export class SCAcademicEventMeta
       type: 'akademische Veranstaltung',
     },
     en: {
-      ...SCEventMeta.getInstance<SCEventMeta>().fieldValueTranslations.en,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCAcademicEventCategories,
+      ...new SCEventMeta().fieldValueTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCAcademicEventCategories,
         SCThingWithCategoriesSpecificValues>().fieldValueTranslations.en,
       type: SCThingType.AcademicEvent,
     },

src/things/article.ts

@@ -20,6 +20,7 @@ import {
   SCCreativeWorkWithoutReferences,
 } from './abstract/creative-work';
 import {SCThingMeta, SCThingType} from './abstract/thing';
+import {SCAcademicPriceGroup, SCThingThatCanBeOffered, SCThingThatCanBeOfferedMeta, SCThingThatCanBeOfferedTranslatableProperties, SCThingThatCanBeOfferedWithoutReferences} from './abstract/thing-that-can-be-offered';
 import {
   SCThingWithCategoriesSpecificValues,
   SCThingWithCategoriesTranslatableProperties,
@@ -40,6 +41,7 @@ export type SCArticleCategories = 'unipedia'
  */
 export interface SCArticleWithoutReferences
   extends SCCreativeWorkWithoutReferences,
+  SCThingThatCanBeOfferedWithoutReferences,
   SCThingWithCategoriesWithoutReferences<SCArticleCategories, SCThingWithCategoriesSpecificValues> {
   /**
    * Article itself as markdown
@@ -71,7 +73,9 @@ export interface SCArticleWithoutReferences
  * @indexable
  */
 export interface SCArticle
-  extends SCCreativeWork, SCArticleWithoutReferences {
+  extends SCCreativeWork,
+  SCThingThatCanBeOffered<SCAcademicPriceGroup>,
+  SCArticleWithoutReferences {
   /**
    * A periodical to which this article belongs
    */
@@ -96,7 +100,9 @@ export interface SCArticle
  * Translatable properties of an article
  */
 export interface SCArticleTranslatableProperties
-  extends SCThingWithCategoriesTranslatableProperties, SCCreativeWorkTranslatableProperties {
+  extends SCThingWithCategoriesTranslatableProperties,
+  SCThingThatCanBeOfferedTranslatableProperties,
+  SCCreativeWorkTranslatableProperties {
   /**
    * Translation of the article itself as markdown
    *
@@ -115,19 +121,21 @@ export class SCArticleMeta
    */
   fieldTranslations = {
     de: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>().fieldTranslations
+      ...new SCCreativeWorkMeta().fieldTranslations
         .de,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCArticleCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCArticleCategories,
       SCThingWithCategoriesSpecificValues>().fieldTranslations.de,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldTranslations.de,
       categories: 'Format',
       reference: 'Referenz',
       articleBody: 'Artikelinhalt',
     },
     en: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>().fieldTranslations
+      ...new SCCreativeWorkMeta().fieldTranslations
         .en,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCArticleCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCArticleCategories,
       SCThingWithCategoriesSpecificValues>().fieldTranslations.en,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldTranslations.en,
       categories: 'format',
       reference: 'reference',
       articleBody: 'article body',
@@ -139,8 +147,11 @@ export class SCArticleMeta
    */
   fieldValueTranslations = {
     de: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>()
+      ...new SCCreativeWorkMeta().fieldValueTranslations.de,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>()
         .fieldValueTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCArticleCategories,
+        SCThingWithCategoriesSpecificValues>().fieldValueTranslations.de,
       categories: {
         article: 'Artikel',
         eArticle: 'E-Aufsatz',
@@ -149,8 +160,11 @@ export class SCArticleMeta
       type: 'Artikel',
     },
     en: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>()
+      ...new SCCreativeWorkMeta().fieldValueTranslations.en,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>()
         .fieldValueTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCArticleCategories,
+        SCThingWithCategoriesSpecificValues>().fieldValueTranslations.en,
       type: SCThingType.Article,
       categories: {
         article: 'article',

src/things/assessment.ts

@@ -121,7 +121,7 @@ export interface SCAssessmentTranslatableProperties
    */
   fieldTranslations = {
     de: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCAssessmentCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCAssessmentCategories,
          SCThingWithCategoriesSpecificValues>().fieldTranslations.de,
       attempt: 'Versuch',
       courseOfStudy: 'Studiengang',
@@ -132,7 +132,7 @@ export interface SCAssessmentTranslatableProperties
       superAssessments: 'übergeordnete Prüfungen',
     },
     en: {
-     ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCAssessmentCategories,
+     ...new SCThingWithCategoriesWithoutReferencesMeta<SCAssessmentCategories,
         SCThingWithCategoriesSpecificValues>().fieldTranslations.en,
       attempt: 'attempt',
       courseOfStudy: 'course of study',
@@ -149,12 +149,12 @@ export interface SCAssessmentTranslatableProperties
    */
   fieldValueTranslations = {
     de: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCAssessmentCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCAssessmentCategories,
       SCThingWithCategoriesSpecificValues>().fieldValueTranslations.de,
       type: 'Prüfung',
     },
     en: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCAssessmentCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCAssessmentCategories,
       SCThingWithCategoriesSpecificValues>().fieldValueTranslations.en,
       type: SCThingType.Assessment,
     },

src/things/book.ts

@@ -20,6 +20,7 @@ import {
   SCCreativeWorkWithoutReferences,
 } from './abstract/creative-work';
 import {SCThingMeta, SCThingType} from './abstract/thing';
+import {SCAcademicPriceGroup, SCThingThatCanBeOffered, SCThingThatCanBeOfferedMeta, SCThingThatCanBeOfferedTranslatableProperties, SCThingThatCanBeOfferedWithoutReferences} from './abstract/thing-that-can-be-offered';
 import {
   SCThingWithCategoriesSpecificValues,
   SCThingWithCategoriesTranslatableProperties,
@@ -54,6 +55,7 @@ export type SCBookCategories = 'audio'
  */
 export interface SCBookWithoutReferences
   extends SCCreativeWorkWithoutReferences,
+  SCThingThatCanBeOfferedWithoutReferences,
   SCThingWithCategoriesWithoutReferences<SCBookCategories, SCThingWithCategoriesSpecificValues> {
   /**
    * Categories of a book
@@ -93,7 +95,9 @@ export interface SCBookWithoutReferences
  * @indexable
  */
 export interface SCBook
-  extends SCCreativeWork, SCBookWithoutReferences {
+  extends SCCreativeWork,
+  SCThingThatCanBeOffered<SCAcademicPriceGroup>,
+  SCBookWithoutReferences {
   /**
    * Translated properties of a book
    */
@@ -109,7 +113,9 @@ export interface SCBook
  * Translatable properties of a book
  */
 export interface SCBookTranslatableFields
-  extends SCThingWithCategoriesTranslatableProperties, SCCreativeWorkTranslatableProperties {
+  extends SCThingWithCategoriesTranslatableProperties,
+  SCThingThatCanBeOfferedTranslatableProperties,
+  SCCreativeWorkTranslatableProperties {
 }
 
 /**
@@ -121,17 +127,19 @@ export class SCBookMeta extends SCThingMeta implements SCMetaTranslations<SCBook
    */
   fieldTranslations = {
     de: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>().fieldTranslations.de,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCBookCategories,
+      ...new SCCreativeWorkMeta().fieldTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCBookCategories,
       SCThingWithCategoriesSpecificValues>().fieldTranslations.de,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldTranslations.de,
       categories: 'Format',
       ISBNs: 'ISBN',
       numberOfPages: 'Seitenanzahl',
     },
     en: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>().fieldTranslations.en,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCBookCategories,
+      ...new SCCreativeWorkMeta().fieldTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCBookCategories,
       SCThingWithCategoriesSpecificValues>().fieldTranslations.en,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldTranslations.en,
       categories: 'format',
       ISBNs: 'ISBN',
       numberOfPages: 'number of pages',
@@ -143,10 +151,12 @@ export class SCBookMeta extends SCThingMeta implements SCMetaTranslations<SCBook
    */
   fieldValueTranslations = {
     de: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>()
+      ...new SCCreativeWorkMeta()
         .fieldValueTranslations.de,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCBookCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCBookCategories,
       SCThingWithCategoriesSpecificValues>().fieldValueTranslations.de,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>()
+        .fieldValueTranslations.de,
       categories: {
         audio: 'Tonträger',
         book: 'Buch',
@@ -170,10 +180,12 @@ export class SCBookMeta extends SCThingMeta implements SCMetaTranslations<SCBook
       type: 'Buch',
     },
     en: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>()
+      ...new SCCreativeWorkMeta()
         .fieldValueTranslations.en,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCBookCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCBookCategories,
       SCThingWithCategoriesSpecificValues>().fieldValueTranslations.en,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>()
+        .fieldValueTranslations.en,
       type: SCThingType.Book,
       categories: {
         audio: 'audio material',

src/things/building.ts

@@ -99,15 +99,15 @@ export class SCBuildingMeta
    */
   fieldTranslations = {
     de: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCBuildingCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCBuildingCategories,
         SCThingWithCategoriesSpecificValues>().fieldTranslations.de,
-      ...SCPlaceWithoutReferencesMeta.getInstance<SCPlaceWithoutReferencesMeta>().fieldTranslations.de,
+      ...new SCPlaceWithoutReferencesMeta().fieldTranslations.de,
       floors: 'Etagen',
     },
     en: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCBuildingCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCBuildingCategories,
         SCThingWithCategoriesSpecificValues>().fieldTranslations.en,
-      ...SCPlaceWithoutReferencesMeta.getInstance<SCPlaceWithoutReferencesMeta>().fieldTranslations.en,
+      ...new SCPlaceWithoutReferencesMeta().fieldTranslations.en,
       floors: 'floors',
     },
   };
@@ -117,9 +117,9 @@ export class SCBuildingMeta
    */
   fieldValueTranslations = {
     de: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCBuildingCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCBuildingCategories,
         SCThingWithCategoriesSpecificValues>().fieldValueTranslations.de,
-      ...SCPlaceWithoutReferencesMeta.getInstance<SCPlaceWithoutReferencesMeta>().fieldValueTranslations.de,
+      ...new SCPlaceWithoutReferencesMeta().fieldValueTranslations.de,
       categories: {
         'cafe': 'Café',
         'canteen': 'Kantine',
@@ -133,9 +133,9 @@ export class SCBuildingMeta
       type: 'Gebäude',
     },
     en: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCBuildingCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCBuildingCategories,
         SCThingWithCategoriesSpecificValues>().fieldValueTranslations.en,
-      ...SCPlaceWithoutReferencesMeta.getInstance<SCPlaceWithoutReferencesMeta>().fieldValueTranslations.en,
+      ...new SCPlaceWithoutReferencesMeta().fieldValueTranslations.en,
       type: SCThingType.Building,
     },
   };

src/things/catalog.ts

@@ -89,7 +89,7 @@ export class SCCatalogMeta
    */
   fieldTranslations = {
     de: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCCatalogCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCCatalogCategories,
         SCThingWithCategoriesSpecificValues>().fieldTranslations.de,
       academicTerm: 'Semester',
       level: 'Ebene',
@@ -97,7 +97,7 @@ export class SCCatalogMeta
       superCatalogs: 'übergeordnete Verzeichnisse',
     },
     en: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCCatalogCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCCatalogCategories,
         SCThingWithCategoriesSpecificValues>().fieldTranslations.en,
       academicTerm: 'academic term',
       level: 'level',
@@ -111,7 +111,7 @@ export class SCCatalogMeta
    */
   fieldValueTranslations = {
     de: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCCatalogCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCCatalogCategories,
         SCThingWithCategoriesSpecificValues>().fieldValueTranslations.de,
       categories: {
         'university events': 'Universitätsveranstaltung',
@@ -119,7 +119,7 @@ export class SCCatalogMeta
       type: 'Verzeichnis',
     },
     en: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCCatalogCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCCatalogCategories,
         SCThingWithCategoriesSpecificValues>().fieldValueTranslations.en,
       type: SCThingType.Catalog,
     },

src/things/contact-point.ts

@@ -73,7 +73,7 @@ export interface SCContactPointWithoutReferences
  * A contact point
  *
  * @see http://schema.org/ContactPoint
- * 
+ *
  * @validatable
  * @indexable
  */
@@ -101,7 +101,7 @@ export class SCContactPointMeta
    */
   fieldTranslations = {
     de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.de,
+      ...new SCThingMeta().fieldTranslations.de,
       areaServed: 'Arbeitsraum',
       email: 'E-Mail-Addresse',
       faxNumber: 'Faxnummer',
@@ -110,7 +110,7 @@ export class SCContactPointMeta
       url: 'Link',
     },
     en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.en,
+      ...new SCThingMeta().fieldTranslations.en,
       areaServed: 'location',
       email: 'email address',
       faxNumber: 'fax number',
@@ -125,11 +125,11 @@ export class SCContactPointMeta
    */
   fieldValueTranslations = {
     de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.de,
+      ...new SCThingMeta().fieldValueTranslations.de,
       type: 'Kontaktinformation',
     },
     en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.en,
+      ...new SCThingMeta().fieldValueTranslations.en,
       type: SCThingType.ContactPoint,
     },
   };

src/things/course-of-study.ts

@@ -115,9 +115,9 @@ export class SCCourseOfStudyMeta
    */
   fieldTranslations = {
     de: {
-      ...SCAcademicDegreeMeta.getInstance<SCAcademicDegreeMeta>()
+      ...new SCAcademicDegreeMeta()
         .fieldTranslations.de,
-      ...SCThingThatCanBeOfferedMeta.getInstance<SCAcademicPriceGroup>()
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>()
         .fieldTranslations.de,
       department: 'Fachbereich',
       mainLanguage: 'Unterrichtssprache',
@@ -127,9 +127,9 @@ export class SCCourseOfStudyMeta
       timeMode: 'Zeitmodell',
     },
     en: {
-      ...SCAcademicDegreeMeta.getInstance<SCAcademicDegreeMeta>()
+      ...new SCAcademicDegreeMeta()
         .fieldTranslations.en,
-      ...SCThingThatCanBeOfferedMeta.getInstance<SCAcademicPriceGroup>()
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>()
         .fieldTranslations.de,
       department: 'department',
       mainLanguage: 'main language',
@@ -145,7 +145,7 @@ export class SCCourseOfStudyMeta
    */
   fieldValueTranslations = {
     de: {
-      ...SCAcademicDegreeMeta.getInstance().fieldValueTranslations.de,
+      ...new SCAcademicDegreeMeta().fieldValueTranslations.de,
       modes: {
         combination: 'Kombinationsstudiengang',
         'double-degree': 'Doppelstudium',
@@ -159,7 +159,7 @@ export class SCCourseOfStudyMeta
       type: 'Studiengang',
     },
     en: {
-      ...SCAcademicDegreeMeta.getInstance().fieldValueTranslations.en,
+      ...new SCAcademicDegreeMeta().fieldValueTranslations.en,
       modes: {
         combination: 'combination course of study',
         'double-degree': 'double degree course of study',

src/things/date-series.ts

@@ -123,9 +123,9 @@ export class SCDateSeriesMeta
    */
   fieldTranslations = {
     de: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>().fieldTranslations
+      ...new SCThingInPlaceMeta().fieldTranslations
         .de,
-      ...SCThingThatCanBeOfferedMeta.getInstance<SCSportCoursePriceGroup>()
+      ...new SCThingThatCanBeOfferedMeta<SCSportCoursePriceGroup>()
         .fieldTranslations.de,
       dates: 'Einzeltermine',
       duration: 'Dauer',
@@ -135,9 +135,9 @@ export class SCDateSeriesMeta
       performers: 'Vortragende',
     },
     en: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>().fieldTranslations
+      ...new SCThingInPlaceMeta().fieldTranslations
         .en,
-      ...SCThingThatCanBeOfferedMeta.getInstance<SCSportCoursePriceGroup>()
+      ...new SCThingThatCanBeOfferedMeta<SCSportCoursePriceGroup>()
         .fieldTranslations.en,
       dates: 'dates',
       duration: 'duration',
@@ -153,16 +153,16 @@ export class SCDateSeriesMeta
    */
   fieldValueTranslations = {
     de: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>()
+      ...new SCThingInPlaceMeta()
         .fieldValueTranslations.de,
-      ...SCThingThatCanBeOfferedMeta.getInstance<SCSportCoursePriceGroup>()
+      ...new SCThingThatCanBeOfferedMeta<SCSportCoursePriceGroup>()
         .fieldValueTranslations.de,
       type: 'Terminserie',
     },
     en: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>()
+      ...new SCThingInPlaceMeta()
         .fieldValueTranslations.en,
-      ...SCThingThatCanBeOfferedMeta.getInstance<SCSportCoursePriceGroup>()
+      ...new SCThingThatCanBeOfferedMeta<SCSportCoursePriceGroup>()
         .fieldValueTranslations.en,
       type: SCThingType.DateSeries,
     },

src/things/diff.ts

@@ -73,14 +73,14 @@ export class SCDiffMeta
    */
   fieldTranslations = {
     de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.de,
+      ...new SCThingMeta().fieldTranslations.de,
       action: 'Aktion',
       changes: 'Änderungen',
       dateCreated: 'Erstellungsdatum',
       object: 'Objekt',
     },
     en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.en,
+      ...new SCThingMeta().fieldTranslations.en,
       action: 'action',
       changes: 'changes',
       dateCreated: 'date created',
@@ -93,7 +93,7 @@ export class SCDiffMeta
    */
   fieldValueTranslations = {
     de: {
-      ...SCThingMeta.getInstance().fieldValueTranslations.de,
+      ...new SCThingMeta().fieldValueTranslations.de,
       action: {
         'changed': 'geändert',
         'removed': 'gelöscht',
@@ -101,7 +101,7 @@ export class SCDiffMeta
       type: 'Unterschied',
     },
     en: {
-      ...SCThingMeta.getInstance().fieldValueTranslations.en,
+      ...new SCThingMeta().fieldValueTranslations.en,
       type: SCThingType.Diff,
     },
   };

src/things/dish.ts

@@ -202,9 +202,9 @@ export class SCDishMeta
    */
   fieldTranslations = {
     de: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCDishCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCDishCategories,
         SCThingWithCategoriesSpecificValues>().fieldTranslations.de,
-      ...SCThingThatCanBeOfferedMeta.getInstance<SCAcademicPriceGroup>()
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>()
         .fieldTranslations.de,
       additives: 'Zusatzstoffe',
       characteristics: 'Merkmale',
@@ -212,9 +212,9 @@ export class SCDishMeta
       nutrition: 'Nährwertangaben',
     },
     en: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCDishCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCDishCategories,
         SCThingWithCategoriesSpecificValues>().fieldTranslations.en,
-      ...SCThingThatCanBeOfferedMeta.getInstance<SCAcademicPriceGroup>()
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>()
         .fieldTranslations.en,
       additives: 'additives',
       characteristics: 'characteristics',
@@ -228,9 +228,9 @@ export class SCDishMeta
    */
   fieldValueTranslations = {
     de: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCDishCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCDishCategories,
         SCThingWithCategoriesSpecificValues>().fieldValueTranslations.de,
-      ...SCThingThatCanBeOfferedMeta.getInstance<SCAcademicPriceGroup>()
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>()
         .fieldValueTranslations.de,
       categories: {
         appetizer: 'Vorspeise',
@@ -243,9 +243,9 @@ export class SCDishMeta
       type: 'Essen',
     },
     en: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCDishCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCDishCategories,
         SCThingWithCategoriesSpecificValues>().fieldValueTranslations.en,
-      ...SCThingThatCanBeOfferedMeta.getInstance<SCAcademicPriceGroup>()
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>()
         .fieldValueTranslations.en,
       type: SCThingType.Dish,
     },

src/things/floor.ts

@@ -114,13 +114,13 @@ export class SCFloorMeta
    */
   fieldTranslations = {
     de: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>().fieldTranslations
+      ...new SCThingInPlaceMeta().fieldTranslations
         .de,
       floorName: 'Etagenbezeichnung',
       plan: 'Grundriss',
     },
     en: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>().fieldTranslations
+      ...new SCThingInPlaceMeta().fieldTranslations
         .en,
       floorName: 'floor name',
       plan: 'plan',
@@ -132,12 +132,12 @@ export class SCFloorMeta
    */
   fieldValueTranslations = {
     de: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>()
+      ...new SCThingInPlaceMeta()
         .fieldValueTranslations.de,
       type: 'Etage',
     },
     en: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>()
+      ...new SCThingInPlaceMeta()
         .fieldValueTranslations.en,
       type: SCThingType.Floor,
     },

src/things/message.ts

@@ -130,9 +130,8 @@ export class SCMessageMeta
    */
   fieldTranslations = {
     de: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>().fieldTranslations
-        .de,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCMessageCategories,
+      ...new SCCreativeWorkMeta().fieldTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCMessageCategories,
       SCThingWithCategoriesSpecificValues>().fieldTranslations.de,
       audienceOrganizations: 'Zielgruppenorganisationen',
       audiences: 'Zielgruppen',
@@ -141,9 +140,8 @@ export class SCMessageMeta
       sequenceIndex: 'Sequenzindex',
     },
     en: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>().fieldTranslations
-        .en,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCMessageCategories,
+      ...new SCCreativeWorkMeta().fieldTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCMessageCategories,
       SCThingWithCategoriesSpecificValues>().fieldTranslations.en,
       audienceOrganizations: 'audience organizations',
       audiences: 'audiences',
@@ -158,8 +156,9 @@ export class SCMessageMeta
    */
   fieldValueTranslations = {
     de: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>()
-        .fieldValueTranslations.de,
+      ...new SCCreativeWorkMeta().fieldValueTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCMessageCategories,
+      SCThingWithCategoriesSpecificValues>().fieldValueTranslations.de,
       audiences: {
         employees: 'Angestellte',
         guests: 'Gäste',
@@ -171,8 +170,9 @@ export class SCMessageMeta
       type: 'Nachricht',
     },
     en: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>()
-        .fieldValueTranslations.en,
+      ...new SCCreativeWorkMeta().fieldValueTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCMessageCategories,
+      SCThingWithCategoriesSpecificValues>().fieldValueTranslations.en,
       type: SCThingType.Message,
     },
   };

src/things/organization.ts

@@ -57,11 +57,11 @@ export class SCOrganizationMeta
    */
   fieldTranslations = {
     de: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>().fieldTranslations.de,
+      ...new SCThingInPlaceMeta().fieldTranslations.de,
       contactPoints: 'Kontaktinformationen',
     },
     en: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>().fieldTranslations.en,
+      ...new SCThingInPlaceMeta().fieldTranslations.en,
       contactPoints: 'contact details',
     },
   };
@@ -71,11 +71,11 @@ export class SCOrganizationMeta
    */
   fieldValueTranslations = {
     de: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>().fieldValueTranslations.de,
+      ...new SCThingInPlaceMeta().fieldValueTranslations.de,
       type: 'Einrichtung',
     },
     en: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>().fieldValueTranslations.en,
+      ...new SCThingInPlaceMeta().fieldValueTranslations.en,
       type: SCThingType.Organization,
     },
   };

src/things/periodical.ts

@@ -20,6 +20,7 @@ import {
   SCCreativeWorkWithoutReferences,
 } from './abstract/creative-work';
 import {SCThingMeta, SCThingType} from './abstract/thing';
+import {SCAcademicPriceGroup, SCThingThatCanBeOffered, SCThingThatCanBeOfferedMeta, SCThingThatCanBeOfferedTranslatableProperties, SCThingThatCanBeOfferedWithoutReferences} from './abstract/thing-that-can-be-offered';
 import {
   SCThingWithCategoriesSpecificValues,
   SCThingWithCategoriesTranslatableProperties,
@@ -37,6 +38,7 @@ export type SCPeriodicalCategories = 'journal' | 'electronic';
  */
 export interface SCPeriodicalWithoutReferences
   extends SCCreativeWorkWithoutReferences,
+  SCThingThatCanBeOfferedWithoutReferences,
   SCThingWithCategoriesWithoutReferences<SCPeriodicalCategories, SCThingWithCategoriesSpecificValues> {
   /**
    * Categories of a periodical
@@ -68,7 +70,9 @@ export interface SCPeriodicalWithoutReferences
  * @indexable
  */
 export interface SCPeriodical
-  extends SCCreativeWork, SCPeriodicalWithoutReferences {
+  extends SCCreativeWork,
+  SCThingThatCanBeOffered<SCAcademicPriceGroup>,
+  SCPeriodicalWithoutReferences {
   /**
    * Translated properties of a periodical
    */
@@ -84,7 +88,9 @@ export interface SCPeriodical
  * Translatable properties of a periodical
  */
 export interface SCPeriodicalTranslatableFields
-  extends SCThingWithCategoriesTranslatableProperties, SCCreativeWorkTranslatableProperties {
+  extends SCThingWithCategoriesTranslatableProperties,
+  SCThingThatCanBeOfferedTranslatableProperties,
+  SCCreativeWorkTranslatableProperties {
 }
 
 /**
@@ -96,16 +102,18 @@ export class SCPeriodicalMeta extends SCThingMeta implements SCMetaTranslations<
    */
   fieldTranslations = {
     de: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>().fieldTranslations.de,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCPeriodicalCategories,
+      ...new SCCreativeWorkMeta().fieldTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCPeriodicalCategories,
       SCThingWithCategoriesSpecificValues>().fieldTranslations.de,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldTranslations.de,
       categories: 'Format',
       ISSNs: 'ISSN',
     },
     en: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>().fieldTranslations.en,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCPeriodicalCategories,
+      ...new SCCreativeWorkMeta().fieldTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCPeriodicalCategories,
       SCThingWithCategoriesSpecificValues>().fieldTranslations.en,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldTranslations.en,
       categories: 'format',
       ISSNs: 'ISSN',
     },
@@ -116,8 +124,10 @@ export class SCPeriodicalMeta extends SCThingMeta implements SCMetaTranslations<
    */
   fieldValueTranslations = {
     de: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>()
-        .fieldValueTranslations.de,
+      ...new SCCreativeWorkMeta().fieldValueTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCPeriodicalCategories,
+      SCThingWithCategoriesSpecificValues>().fieldValueTranslations.de,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldValueTranslations.de,
       type: 'Periodikum',
       categories: {
         electronic: 'E-Journal',
@@ -125,8 +135,10 @@ export class SCPeriodicalMeta extends SCThingMeta implements SCMetaTranslations<
       },
     },
     en: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>()
-        .fieldValueTranslations.en,
+      ...new SCCreativeWorkMeta().fieldValueTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCPeriodicalCategories,
+      SCThingWithCategoriesSpecificValues>().fieldValueTranslations.en,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldValueTranslations.en,
       type: 'periodical',
       categories: {
         electronic: 'E-Journal',

src/things/person.ts

@@ -174,7 +174,7 @@ export class SCPersonMeta
    */
   fieldTranslations = {
     de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.de,
+      ...new SCThingMeta().fieldTranslations.de,
       additionalName: 'Zusatzname',
       affiliations: 'Zugehörigkeiten',
       birthDate: 'Geburtsdatum',
@@ -192,7 +192,7 @@ export class SCPersonMeta
       workLocations: 'Arbeitsstandorte',
     },
     en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.en,
+      ...new SCThingMeta().fieldTranslations.en,
       additionalName: 'additional name',
       affiliations: 'affiliations',
       birthDate: 'birth date',
@@ -217,7 +217,7 @@ export class SCPersonMeta
    */
   fieldValueTranslations = {
     de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.de,
+      ...new SCThingMeta().fieldValueTranslations.de,
       gender: {
         'female': 'weiblich',
         'inter': 'divers',
@@ -227,7 +227,7 @@ export class SCPersonMeta
       type: 'Person',
     },
     en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.en,
+      ...new SCThingMeta().fieldValueTranslations.en,
       type: SCThingType.Person,
     },
   };

src/things/point-of-interest.ts

@@ -82,17 +82,17 @@ export class SCPointOfInterestMeta
    */
   fieldTranslations = {
     de: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCPointOfInterestCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCPointOfInterestCategories,
         SCThingWithCategoriesSpecificValues>().fieldTranslations.de,
-      ...SCPlaceWithoutReferencesMeta.getInstance<SCPlaceWithoutReferencesMeta>().fieldTranslations.de,
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>().fieldTranslations
+      ...new SCPlaceWithoutReferencesMeta().fieldTranslations.de,
+      ...new SCThingInPlaceMeta().fieldTranslations
         .de,
     },
     en: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCPointOfInterestCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCPointOfInterestCategories,
         SCThingWithCategoriesSpecificValues>().fieldTranslations.en,
-      ...SCPlaceWithoutReferencesMeta.getInstance<SCPlaceWithoutReferencesMeta>().fieldTranslations.en,
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>().fieldTranslations
+      ...new SCPlaceWithoutReferencesMeta().fieldTranslations.en,
+      ...new SCThingInPlaceMeta().fieldTranslations
         .en,
     },
   };
@@ -102,9 +102,9 @@ export class SCPointOfInterestMeta
    */
   fieldValueTranslations = {
     de: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCPointOfInterestCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCPointOfInterestCategories,
         SCThingWithCategoriesSpecificValues>().fieldValueTranslations.de,
-      ...SCPlaceWithoutReferencesMeta.getInstance<SCPlaceWithoutReferencesMeta>().fieldValueTranslations.de,
+      ...new SCPlaceWithoutReferencesMeta().fieldValueTranslations.de,
       categories: {
         'card charger': 'Kartenaufwerter',
         'computer': 'Computer',
@@ -115,9 +115,9 @@ export class SCPointOfInterestMeta
       type: 'Sonderziel',
     },
     en: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCPointOfInterestCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCPointOfInterestCategories,
         SCThingWithCategoriesSpecificValues>().fieldValueTranslations.en,
-      ...SCPlaceWithoutReferencesMeta.getInstance<SCPlaceWithoutReferencesMeta>().fieldValueTranslations.en,
+      ...new SCPlaceWithoutReferencesMeta().fieldValueTranslations.en,
       type: SCThingType.PointOfInterest,
     },
   };

src/things/publication-event.ts

@@ -78,12 +78,12 @@ export class SCPublicationEventMeta
    */
   fieldTranslations = {
     de: {
-      ...SCEventMeta.getInstance<SCEventMeta>().fieldTranslations.de,
+      ...new SCEventMeta().fieldTranslations.de,
       locations: 'Erscheinungsorte',
       publisher: 'Verlag',
     },
     en: {
-      ...SCEventMeta.getInstance<SCEventMeta>().fieldTranslations.en,
+      ...new SCEventMeta().fieldTranslations.en,
       locations: 'places of publication',
       publisher: 'publisher',
     },
@@ -94,11 +94,11 @@ export class SCPublicationEventMeta
    */
   fieldValueTranslations = {
     de: {
-      ...SCEventMeta.getInstance<SCEventMeta>().fieldValueTranslations.de,
+      ...new SCEventMeta().fieldValueTranslations.de,
       type: 'Veröffentlichung',
     },
     en: {
-      ...SCEventMeta.getInstance<SCEventMeta>().fieldValueTranslations.en,
+      ...new SCEventMeta().fieldValueTranslations.en,
       type: 'publication event',
     },
   };

src/things/room.ts

@@ -127,23 +127,23 @@ export class SCRoomMeta
    */
   fieldTranslations = {
     de: {
-      ...SCPlaceWithoutReferencesMeta.getInstance<SCPlaceWithoutReferencesMeta>().fieldTranslations.de,
-      ...SCThingThatAcceptsPaymentsWithoutReferencesMeta.getInstance<SCThingThatAcceptsPaymentsWithoutReferencesMeta>()
+      ...new SCPlaceWithoutReferencesMeta().fieldTranslations.de,
+      ...new SCThingThatAcceptsPaymentsWithoutReferencesMeta()
         .fieldTranslations.de,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCRoomCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCRoomCategories,
         SCRoomSpecificValues>().fieldTranslations.de,
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>().fieldTranslations
+      ...new SCThingInPlaceMeta().fieldTranslations
         .de,
       floorName: 'Etagenbezeichnung',
       inventory: 'Bestand',
     },
     en: {
-      ...SCPlaceWithoutReferencesMeta.getInstance<SCPlaceWithoutReferencesMeta>().fieldTranslations.en,
-      ...SCThingThatAcceptsPaymentsWithoutReferencesMeta.getInstance<SCThingThatAcceptsPaymentsWithoutReferencesMeta>()
+      ...new SCPlaceWithoutReferencesMeta().fieldTranslations.en,
+      ...new SCThingThatAcceptsPaymentsWithoutReferencesMeta()
         .fieldTranslations.en,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCRoomCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCRoomCategories,
         SCRoomSpecificValues>().fieldTranslations.en,
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>().fieldTranslations
+      ...new SCThingInPlaceMeta().fieldTranslations
         .en,
       floorName: 'floor name',
       inventory: 'inventory',
@@ -155,12 +155,12 @@ export class SCRoomMeta
    */
   fieldValueTranslations = {
     de: {
-      ...SCPlaceWithoutReferencesMeta.getInstance<SCPlaceWithoutReferencesMeta>().fieldValueTranslations.de,
-      ...SCThingThatAcceptsPaymentsWithoutReferencesMeta.getInstance<SCThingThatAcceptsPaymentsWithoutReferencesMeta>()
+      ...new SCPlaceWithoutReferencesMeta().fieldValueTranslations.de,
+      ...new SCThingThatAcceptsPaymentsWithoutReferencesMeta()
         .fieldValueTranslations.de,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCRoomCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCRoomCategories,
         SCRoomSpecificValues>().fieldValueTranslations.de,
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>()
+      ...new SCThingInPlaceMeta()
         .fieldValueTranslations.de,
       categories: {
         'cafe': 'Café',
@@ -180,12 +180,12 @@ export class SCRoomMeta
       type: 'Raum',
     },
     en: {
-      ...SCPlaceWithoutReferencesMeta.getInstance<SCPlaceWithoutReferencesMeta>().fieldValueTranslations.en,
-      ...SCThingThatAcceptsPaymentsWithoutReferencesMeta.getInstance<SCThingThatAcceptsPaymentsWithoutReferencesMeta>()
+      ...new SCPlaceWithoutReferencesMeta().fieldValueTranslations.en,
+      ...new SCThingThatAcceptsPaymentsWithoutReferencesMeta()
         .fieldValueTranslations.en,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCRoomCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCRoomCategories,
         SCRoomSpecificValues>().fieldValueTranslations.en,
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>()
+      ...new SCThingInPlaceMeta()
         .fieldValueTranslations.en,
       type: SCThingType.Room,
     },

src/things/semester.ts

@@ -65,7 +65,7 @@ export class SCSemesterMeta
    */
   fieldTranslations = {
     de: {
-      ...SCAcademicTermWithoutReferencesMeta.getInstance<SCAcademicTermWithoutReferencesMeta>().fieldTranslations.de,
+      ...new SCAcademicTermWithoutReferencesMeta().fieldTranslations.de,
       acronym: 'Abkürzung',
       endDate: 'Ende',
       eventsEndDate: 'Vorlesungsschluss',
@@ -73,7 +73,7 @@ export class SCSemesterMeta
       startDate: 'Beginn',
     },
     en: {
-      ...SCAcademicTermWithoutReferencesMeta.getInstance<SCAcademicTermWithoutReferencesMeta>().fieldTranslations.en,
+      ...new SCAcademicTermWithoutReferencesMeta().fieldTranslations.en,
       acronym: 'acronym',
       endDate: 'end date',
       eventsEndDate: 'semester ending',
@@ -87,12 +87,12 @@ export class SCSemesterMeta
    */
   fieldValueTranslations = {
     de: {
-      ...SCAcademicTermWithoutReferencesMeta.getInstance<SCAcademicTermWithoutReferencesMeta>()
+      ...new SCAcademicTermWithoutReferencesMeta()
         .fieldValueTranslations.de,
       type: 'Semester',
     },
     en: {
-      ...SCAcademicTermWithoutReferencesMeta.getInstance<SCAcademicTermWithoutReferencesMeta>()
+      ...new SCAcademicTermWithoutReferencesMeta()
         .fieldValueTranslations.en,
       type: SCThingType.Semester,
     },

src/things/setting.ts

@@ -129,7 +129,7 @@ export class SCSettingMeta extends SCThingMeta implements SCMetaTranslations<SCS
    */
   fieldTranslations = {
     de: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCSettingCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCSettingCategories,
         SCThingWithCategoriesSpecificValues>().fieldTranslations.de,
       defaultValue: 'Standard Wert',
       inputType: 'Eingabetyp',
@@ -138,7 +138,7 @@ export class SCSettingMeta extends SCThingMeta implements SCMetaTranslations<SCS
       values: 'Werte',
     },
     en: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCSettingCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCSettingCategories,
         SCThingWithCategoriesSpecificValues>().fieldTranslations.en,
       defaultValue: 'default value',
       inputType: 'input type',
@@ -153,7 +153,7 @@ export class SCSettingMeta extends SCThingMeta implements SCMetaTranslations<SCS
    */
   fieldValueTranslations = {
     de: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCSettingCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCSettingCategories,
         SCThingWithCategoriesSpecificValues>().fieldValueTranslations.de,
       categories: {
         credentials: 'Anmeldedaten',
@@ -171,7 +171,7 @@ export class SCSettingMeta extends SCThingMeta implements SCMetaTranslations<SCS
       type: 'Einstellung',
     },
     en: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCSettingCategories,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCSettingCategories,
         SCThingWithCategoriesSpecificValues>().fieldValueTranslations.en,
       type: SCThingType.Setting,
     },

src/things/sport-course.ts

@@ -52,10 +52,10 @@ export class SCSportCourseMeta
    */
   fieldTranslations = {
     de: {
-      ...SCEventMeta.getInstance<SCEventMeta>().fieldTranslations.de,
+      ...new SCEventMeta().fieldTranslations.de,
     },
     en: {
-      ...SCEventMeta.getInstance<SCEventMeta>().fieldTranslations.en,
+      ...new SCEventMeta().fieldTranslations.en,
     },
   };
 
@@ -64,11 +64,11 @@ export class SCSportCourseMeta
    */
   fieldValueTranslations = {
     de: {
-      ...SCEventMeta.getInstance<SCEventMeta>().fieldValueTranslations.de,
+      ...new SCEventMeta().fieldValueTranslations.de,
       type: 'Sportkurs',
     },
     en: {
-      ...SCEventMeta.getInstance<SCEventMeta>().fieldValueTranslations.en,
+      ...new SCEventMeta().fieldValueTranslations.en,
       type: SCThingType.SportCourse,
     },
   };

src/things/study-module.ts

@@ -150,8 +150,8 @@ export class SCStudyModuleMeta
    */
   fieldTranslations = {
     de: {
-      ...SCThingMeta.getInstance().fieldTranslations.de,
-      ...SCThingThatCanBeOfferedMeta.getInstance<SCAcademicPriceGroup>()
+      ...new SCThingMeta().fieldTranslations.de,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>()
         .fieldTranslations.de,
       academicEvents: 'Veranstaltungen',
       ects: 'ECTS-Punkte',
@@ -164,8 +164,8 @@ export class SCStudyModuleMeta
       secretary: 'Sekretariat',
     },
     en: {
-      ...SCThingMeta.getInstance().fieldTranslations.en,
-      ...SCThingThatCanBeOfferedMeta.getInstance<SCAcademicPriceGroup>()
+      ...new SCThingMeta().fieldTranslations.en,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>()
         .fieldTranslations.en,
       academicEvents: 'academic events',
       ects: 'ECTS points',
@@ -184,8 +184,8 @@ export class SCStudyModuleMeta
    */
   fieldValueTranslations = {
     de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.de,
-      ...SCThingThatCanBeOfferedMeta.getInstance<SCAcademicPriceGroup>()
+      ...new SCThingMeta().fieldValueTranslations.de,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>()
         .fieldValueTranslations.de,
       necessity: {
         'elective': 'Wahlfach',
@@ -195,8 +195,8 @@ export class SCStudyModuleMeta
       type: 'Studiengangmodul',
     },
     en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.en,
-      ...SCThingThatCanBeOfferedMeta.getInstance<SCAcademicPriceGroup>()
+      ...new SCThingMeta().fieldValueTranslations.en,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>()
         .fieldValueTranslations.en,
       type: SCThingType.StudyModule,
     },

src/things/ticket.ts

@@ -70,14 +70,14 @@ export class SCTicketMeta
    */
   fieldTranslations = {
     de: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>().fieldTranslations
+      ...new SCThingInPlaceMeta().fieldTranslations
         .de,
       approxWaitingTime: 'ungefähre Wartezeit',
       currentTicketNumber: 'aktuelle Ticketnummer',
       serviceType: 'Service Kategorie',
     },
     en: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>().fieldTranslations
+      ...new SCThingInPlaceMeta().fieldTranslations
         .en,
       approxWaitingTime: 'approximate waiting time',
       currentTicketNumber: 'current ticket number',
@@ -90,12 +90,12 @@ export class SCTicketMeta
    */
   fieldValueTranslations = {
     de: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>()
+      ...new SCThingInPlaceMeta()
         .fieldValueTranslations.de,
       type: 'Ticket',
     },
     en: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>()
+      ...new SCThingInPlaceMeta()
         .fieldValueTranslations.en,
       type: SCThingType.Ticket,
     },

src/things/todo.ts

@@ -88,14 +88,14 @@ export class SCToDoMeta extends SCThingMeta implements SCMetaTranslations<SCToDo
    */
   fieldTranslations = {
     de: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<string,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<string,
         SCThingWithCategoriesSpecificValues>().fieldTranslations.de,
       done: 'Erledigt',
       dueDate: 'Fälligkeitsdatum',
       priority: 'Priorität',
     },
     en: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<string,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<string,
         SCThingWithCategoriesSpecificValues>().fieldTranslations.en,
       done: 'done',
       dueDate: 'due date',
@@ -108,12 +108,12 @@ export class SCToDoMeta extends SCThingMeta implements SCMetaTranslations<SCToDo
    */
   fieldValueTranslations = {
     de: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<string,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<string,
         SCThingWithCategoriesSpecificValues>().fieldValueTranslations.de,
       type: 'ToDo',
     },
     en: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<string,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<string,
         SCThingWithCategoriesSpecificValues>().fieldValueTranslations.en,
       type: SCThingType.ToDo,
     },

src/things/tour.ts

@@ -65,12 +65,12 @@ export class SCTourMeta
    */
   fieldTranslations = {
     de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.de,
+      ...new SCThingMeta().fieldTranslations.de,
       init: 'Initiales Skript',
       steps: 'Schritte',
     },
     en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.en,
+      ...new SCThingMeta().fieldTranslations.en,
       init: 'initial script',
       steps: 'steps',
     },
@@ -81,11 +81,11 @@ export class SCTourMeta
    */
   fieldValueTranslations = {
     de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.de,
+      ...new SCThingMeta().fieldValueTranslations.de,
       type: 'Tour',
     },
     en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.en,
+      ...new SCThingMeta().fieldValueTranslations.en,
       type: SCThingType.Tour,
     },
   };

src/things/video.ts

@@ -12,17 +12,19 @@
  * You should have received a copy of the GNU General Public License along with
  * this program. If not, see <https://www.gnu.org/licenses/>.
  */
-import {SCLanguage, SCMetaTranslations} from '../general/i18n';
+import {SCLanguage, SCMetaTranslations, SCTranslations} from '../general/i18n';
 import {SCISO8601Duration} from '../general/time';
-import {SCCreativeWork, SCCreativeWorkMeta, SCCreativeWorkWithoutReferences} from './abstract/creative-work';
+import {SCCreativeWork, SCCreativeWorkMeta, SCCreativeWorkTranslatableProperties, SCCreativeWorkWithoutReferences} from './abstract/creative-work';
 import {SCThingMeta, SCThingType} from './abstract/thing';
+import {SCAcademicPriceGroup, SCThingThatCanBeOffered, SCThingThatCanBeOfferedMeta, SCThingThatCanBeOfferedTranslatableProperties, SCThingThatCanBeOfferedWithoutReferences} from './abstract/thing-that-can-be-offered';
 import {SCPersonWithoutReferences} from './person';
 
 /**
  * A video without references
  */
 export interface SCVideoWithoutReferences
-  extends SCCreativeWorkWithoutReferences {
+  extends SCCreativeWorkWithoutReferences,
+  SCThingThatCanBeOfferedWithoutReferences {
   /**
    * The Duration of the Video
    */
@@ -52,6 +54,11 @@ export interface SCVideoWithoutReferences
    */
   transcript?: string;
 
+  /**
+   * Translated fields of a video
+   */
+  translations?: SCTranslations<SCVideoTranslatableFields>;
+
   /**
    * Type of an Video
    */
@@ -123,18 +130,34 @@ export interface SCVideoTrack {
  * @indexable
  */
 export interface SCVideo
-  extends SCCreativeWork, SCVideoWithoutReferences {
+  extends SCCreativeWork,
+  SCThingThatCanBeOffered<SCAcademicPriceGroup>,
+  SCVideoWithoutReferences {
   /**
    * Persons acting in the Video
    */
   actors?: SCPersonWithoutReferences[];
 
+  /**
+   * Translated fields of a video
+   */
+  translations?: SCTranslations<SCVideoTranslatableFields>;
+
   /**
    * Type of a video
    */
   type: SCThingType.Video;
 }
 
+/**
+ * Translatable properties of a video
+ */
+export interface SCVideoTranslatableFields
+extends SCCreativeWorkTranslatableProperties,
+  SCThingThatCanBeOfferedTranslatableProperties {
+}
+
+
 /**
  * Meta information about a video
  */
@@ -146,8 +169,9 @@ export class SCVideoMeta
    */
   fieldTranslations = {
     de: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>().fieldTranslations
+      ...new SCCreativeWorkMeta().fieldTranslations
         .de,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldTranslations.de,
       actors: 'Darsteller',
       duration: 'Dauer',
       sources: 'Quellen',
@@ -156,8 +180,9 @@ export class SCVideoMeta
       transcript: 'Transkript',
     },
     en: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>().fieldTranslations
+      ...new SCCreativeWorkMeta().fieldTranslations
         .en,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldTranslations.en,
       actors: 'actors',
       duration: 'duration',
       sources: 'sources',
@@ -172,12 +197,16 @@ export class SCVideoMeta
    */
   fieldValueTranslations = {
     de: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>()
+      ...new SCCreativeWorkMeta()
+        .fieldValueTranslations.de,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>()
         .fieldValueTranslations.de,
       type: 'Video',
     },
     en: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>()
+      ...new SCCreativeWorkMeta()
+        .fieldValueTranslations.en,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>()
         .fieldValueTranslations.en,
       type: SCThingType.Video,
     },

src/translator.ts

@@ -12,8 +12,8 @@
  * You should have received a copy of the GNU General Public License along with
  * this program. If not, see <https://www.gnu.org/licenses/>.
  */
-import clone = require('fast-clone');
 import equal = require('fast-deep-equal/es6');
+import clone = require('rfdc');
 import {Defined, TSOCType} from 'ts-optchain';
 import {SCLanguageCode} from './general/i18n';
 import {isThing} from './guards';
@@ -77,6 +77,13 @@ export class SCThingTranslator {
     this.sourceCache = new LRUCache(cacheCapacity);
     this._language = language;
     this.metaClasses = SCClasses;
+
+    // Initalize all meta classes once
+    if (typeof (this.metaClasses as any)[Object.keys(this.metaClasses)[0]] === 'function') {
+      for (const metaClass of Object.keys(this.metaClasses)) {
+        (this.metaClasses as any)[metaClass] = new (SCClasses as any)[metaClass]();
+      }
+    }
   }
 
   /**
@@ -143,7 +150,7 @@ export class SCThingTranslator {
    */
   private getMetaClassInstance(thingType: SCThingType): any {
     if (thingType in this.metaClasses) {
-      return new (this.metaClasses as any)[thingType]();
+      return this.metaClasses[thingType];
     }
 
     return undefined;
@@ -234,7 +241,7 @@ export class SCThingTranslator {
         return cachedInstance as T;
       }
     }
-    const translatedInstance = this.translateThingInPlaceDestructively(clone(thing));
+    const translatedInstance = this.translateThingInPlaceDestructively(clone()(thing));
     delete translatedInstance.translations;
     this.cache.putObject(translatedInstance);
     this.sourceCache.putObject(thing);
@@ -267,7 +274,7 @@ export class SCThingTranslator {
               return this.deeptranslate((objTranslatedFromCache as any)[key]);
             }
           }
-          const objTranslated = this.translateThingInPlaceDestructively(clone(obj));
+          const objTranslated = this.translateThingInPlaceDestructively(clone()(obj));
           this.cache.putObject(objTranslated);
           this.sourceCache.putObject(thing);
 

test/translator.spec.ts

@@ -13,7 +13,7 @@
  * this program. If not, see <https://www.gnu.org/licenses/>.
  */
 import {expect} from 'chai';
-import clone = require('fast-clone');
+import clone from 'rfdc';
 import {slow, suite, test, timeout} from '@testdeck/mocha';
 import {SCThingOriginType, SCThingType, SCThingRemoteOrigin} from '../src/things/abstract/thing';
 import {SCBuildingWithoutReferences} from '../src/things/building';
@@ -264,7 +264,7 @@ export class TranslationSpecInplace {
   @test
   public reaccessWithChangedSourceOmitsLRUCache() {
     const translatorDE = new SCThingTranslator('de');
-    const dishCopy = clone(dish);
+    const dishCopy = clone()(dish);
     const translatedDish = translatorDE.translatedAccess(dish);
     const distructivelyTranslatedDish = translatorDE.translate(dish);
 
@@ -304,8 +304,8 @@ export class MetaTranslationSpec {
     const dishMetaTranslationsDE = translator.translatedPropertyNames(dish.type);
     const dishMetaTranslationsEN = translatorEN.translatedPropertyNames(dish.type);
     expect(dishMetaTranslationsEN).to.not.deep.equal(dishMetaTranslationsDE);
-    expect(dishMetaTranslationsDE).to.deep.equal(SCDishMeta.getInstance().fieldTranslations.de);
-    expect(dishMetaTranslationsEN).to.deep.equal(SCDishMeta.getInstance().fieldTranslations.en);
+    expect(dishMetaTranslationsDE).to.deep.equal(new SCDishMeta().fieldTranslations.de);
+    expect(dishMetaTranslationsEN).to.deep.equal(new SCDishMeta().fieldTranslations.en);
   }
 
   @test
@@ -313,9 +313,9 @@ export class MetaTranslationSpec {
     const dishTypeDE = translator.translatedPropertyValue(dish.type, 'type');
     const dishTypeEN = translatorEN.translatedPropertyValue(dish.type, 'type', undefined);
     const dishTypeBASE = translatorWithFallback.translatedPropertyValue(dish.type, 'type');
-    expect(dishTypeDE).to.deep.equal(SCDishMeta.getInstance().fieldValueTranslations.de.type);
-    expect(dishTypeEN).to.deep.equal(SCDishMeta.getInstance().fieldValueTranslations.en.type);
-    expect(dishTypeBASE).to.deep.equal(SCDishMeta.getInstance().fieldValueTranslations.en.type);
+    expect(dishTypeDE).to.deep.equal(new SCDishMeta().fieldValueTranslations.de.type);
+    expect(dishTypeEN).to.deep.equal(new SCDishMeta().fieldValueTranslations.en.type);
+    expect(dishTypeBASE).to.deep.equal(new SCDishMeta().fieldValueTranslations.en.type);
   }
 
   @test
@@ -323,14 +323,14 @@ export class MetaTranslationSpec {
     const dishTypeDE = translator.translatedPropertyValue(dish.type, 'categories', 'main dish');
     const dishTypeEN = translatorEN.translatedPropertyValue(dish.type, 'categories', 'main dish');
     const dishTypeBASE = translatorWithFallback.translatedPropertyValue(dish.type, 'categories', 'main dish');
-    expect(dishTypeDE).to.deep.equal(SCDishMeta.getInstance<SCDishMeta>().fieldValueTranslations.de.categories['main dish']);
+    expect(dishTypeDE).to.deep.equal(new SCDishMeta().fieldValueTranslations.de.categories['main dish']);
     expect(dishTypeEN).to.deep.equal(dish.categories[0]);
     expect(dishTypeBASE).to.deep.equal(dish.categories[0]);
   }
 
   @test
   public thingWithoutMetaClass() {
-    const dishCopy = clone(dish);
+    const dishCopy = clone()(dish);
     const typeNonExistant = eval("(x) => x + 'typeNonExistant';");
     // this will assign a non existant SCThingType to dishCopy
     dishCopy.type = typeNonExistant();