feat(ns-openapi-3-1): add Discriminator Object

apidom/packages/apidom-ns-openapi-3-1/src/elements/Discriminator.ts

@@ -0,0 +1,26 @@
+import { Attributes, Meta, ObjectElement, StringElement } from 'minim';
+
+class Discriminator extends ObjectElement {
+  constructor(content?: Record<string, unknown>, meta?: Meta, attributes?: Attributes) {
+    super(content, meta, attributes);
+    this.element = 'discriminator';
+  }
+
+  get propertyName(): StringElement {
+    return this.get('propertyName');
+  }
+
+  set propertyName(propertyName: StringElement) {
+    this.set('propertyName', propertyName);
+  }
+
+  get mapping(): ObjectElement {
+    return this.get('mapping');
+  }
+
+  set mapping(mapping: ObjectElement) {
+    this.set('mapping', mapping);
+  }
+}
+
+export default Discriminator;

apidom/packages/apidom-ns-openapi-3-1/src/index.ts

@@ -55,6 +55,7 @@ export { keyMap, getNodeType } from './traversal/visitor';
 export { default as CallbackElement } from './elements/Callback';
 export { default as ComponentsElement } from './elements/Components';
 export { default as ContactElement } from './elements/Contact';
+export { default as DiscriminatorElement } from './elements/Discriminator';
 export { default as ExternalDocumentationElement } from './elements/ExternalDocumentation';
 export { default as InfoElement } from './elements/Info';
 export { default as JsonSchemaDialectVisitor } from './elements/JsonSchemaDialect';

apidom/packages/apidom-ns-openapi-3-1/src/namespace.ts

@@ -3,6 +3,7 @@ import { NamespacePluginOptions } from 'minim';
 import CallbackElement from './elements/Callback';
 import ComponentsElement from './elements/Components';
 import ContactElement from './elements/Contact';
+import DiscriminatorElement from './elements/Discriminator';
 import ExternalDocumentationElement from './elements/ExternalDocumentation';
 import InfoElement from './elements/Info';
 import JsonSchemaDialectElement from './elements/JsonSchemaDialect';
@@ -30,6 +31,7 @@ const openApi3_1 = {
     base.register('callback', CallbackElement);
     base.register('components', ComponentsElement);
     base.register('contact', ContactElement);
+    base.register('discriminator', DiscriminatorElement);
     base.register('externalDocumentation', ExternalDocumentationElement);
     base.register('info', InfoElement);
     base.register('jsonSchemaDialect', JsonSchemaDialectElement);

apidom/packages/apidom-ns-openapi-3-1/src/refractor/registration.ts

@@ -1,6 +1,7 @@
 import CallbackElement from '../elements/Callback';
 import ComponentsElement from '../elements/Components';
 import ContactElement from '../elements/Contact';
+import DiscriminatorElement from '../elements/Discriminator';
 import ExternalDocumentationElement from '../elements/ExternalDocumentation';
 import InfoElement from '../elements/Info';
 import JsonSchemaDialectElement from '../elements/JsonSchemaDialect';
@@ -43,6 +44,13 @@ ContactElement.refract = createRefractor([
   'Contact',
   '$visitor',
 ]);
+DiscriminatorElement.refract = createRefractor([
+  'visitors',
+  'document',
+  'objects',
+  'Discriminator',
+  '$visitor',
+]);
 ExternalDocumentationElement.refract = createRefractor([
   'visitors',
   'document',

apidom/packages/apidom-ns-openapi-3-1/src/refractor/specification.ts

@@ -44,6 +44,9 @@ import ParameterStyleVisitor from './visitors/open-api-3-1/parameter/StyleVisito
 import ParameterExplodeVisitor from './visitors/open-api-3-1/parameter/ExplodeVisitor';
 import ParameterAllowReservedVisitor from './visitors/open-api-3-1/parameter/AllowReservedVisitor';
 import SchemaVisitor from './visitors/open-api-3-1/schema';
+import DiscriminatorVisitor from './visitors/open-api-3-1/distriminator';
+import DiscriminatorPropertyNameVisitor from './visitors/open-api-3-1/distriminator/PropertyNameVisitor';
+import DiscriminatorMappingVisitor from './visitors/open-api-3-1/distriminator/MappingVisitor';
 import ParameterExampleVisitor from './visitors/open-api-3-1/parameter/ExampleVisitor';
 import ExamplesVisitor from './visitors/open-api-3-1/ExamplesVisitor';
 import ContentVisitor from './visitors/open-api-3-1/ContentVisitor';
@@ -282,6 +285,13 @@ const specification = {
         Schema: {
           $visitor: SchemaVisitor,
         },
+        Discriminator: {
+          $visitor: DiscriminatorVisitor,
+          fixedFields: {
+            propertyName: DiscriminatorPropertyNameVisitor,
+            mapping: DiscriminatorMappingVisitor,
+          },
+        },
         SecurityRequirement: {
           $visitor: SecurityRequirementVisitor,
         },

apidom/packages/apidom-ns-openapi-3-1/src/refractor/visitors/open-api-3-1/distriminator/MappingVisitor.ts

@@ -0,0 +1,19 @@
+import stampit from 'stampit';
+import { always } from 'ramda';
+import { ObjectElement } from 'apidom';
+
+import MapVisitor from '../../generics/MapVisitor';
+import FallbackVisitor from '../../FallbackVisitor';
+import { appendMetadata } from '../../../metadata';
+
+const MappingVisitor = stampit(MapVisitor, FallbackVisitor, {
+  props: {
+    specPath: always(['value']),
+  },
+  init() {
+    this.element = new ObjectElement();
+    appendMetadata(['mapping'], this.element);
+  },
+});
+
+export default MappingVisitor;

apidom/packages/apidom-ns-openapi-3-1/src/refractor/visitors/open-api-3-1/distriminator/PropertyNameVisitor.ts

@@ -0,0 +1,7 @@
+import stampit from 'stampit';
+
+import FallbackVisitor from '../../FallbackVisitor';
+
+const PropertyNameVisitor = stampit(FallbackVisitor);
+
+export default PropertyNameVisitor;

apidom/packages/apidom-ns-openapi-3-1/src/refractor/visitors/open-api-3-1/distriminator/index.ts

@@ -0,0 +1,18 @@
+import stampit from 'stampit';
+import { always } from 'ramda';
+
+import DiscriminatorElement from '../../../../elements/Discriminator';
+import FallbackVisitor from '../../FallbackVisitor';
+import FixedFieldsVisitor from '../../generics/FixedFieldsVisitor';
+
+const DiscriminatorVisitor = stampit(FixedFieldsVisitor, FallbackVisitor, {
+  props: {
+    specPath: always(['document', 'objects', 'Discriminator']),
+    canSupportSpecificationExtensions: true,
+  },
+  init() {
+    this.element = new DiscriminatorElement();
+  },
+});
+
+export default DiscriminatorVisitor;

apidom/packages/apidom-ns-openapi-3-1/src/traversal/visitor.ts

@@ -12,6 +12,7 @@ export const keyMap = {
   CallbackElement: ['content'],
   ComponentsElement: ['content'],
   ContactElement: ['content'],
+  DiscriminatorElement: ['content'],
   ExternalDocumentationElement: ['content'],
   InfoElement: ['content'],
   LicenseElement: ['content'],