rename getPrimaryValue to getValue, improve doccomments and move virtual metadata code to the Metadatum model

src/app/+item-page/simple/item-types/shared/item.component.spec.ts

@@ -411,10 +411,10 @@ describe('ItemComponent', () => {
 
     it('should have all the representations in the correct order', () => {
       representations.subscribe((reps: MetadataRepresentation[]) => {
-        expect(reps[0].getPrimaryValue()).toEqual('First value');
-        expect(reps[1].getPrimaryValue()).toEqual('Second value');
-        expect(reps[2].getPrimaryValue()).toEqual('related item');
-        expect(reps[3].getPrimaryValue()).toEqual('Fourth value');
+        expect(reps[0].getValue()).toEqual('First value');
+        expect(reps[1].getValue()).toEqual('Second value');
+        expect(reps[2].getValue()).toEqual('related item');
+        expect(reps[3].getValue()).toEqual('Fourth value');
       });
     });
 

src/app/+item-page/simple/item-types/shared/item.component.ts

@@ -99,10 +99,11 @@ export const relationsToRepresentations = (thisId: string, itemType: string, met
     source.pipe(
       flatMap((rels: Relationship[]) =>
         observableZip(
-          ...metadata.map((metadatum: Metadatum) => {
-            const prefix = 'virtual::';
-            if (hasValue(metadatum.authority) && metadatum.authority.startsWith(prefix)) {
-              const matchingRels = rels.filter((rel: Relationship) => ('' + rel.id) === metadatum.authority.substring(metadatum.authority.indexOf(prefix) + prefix.length));
+          ...metadata
+            .map((metadatum: any) => Object.assign(new Metadatum(), metadatum))
+            .map((metadatum: Metadatum) => {
+            if (metadatum.isVirtual) {
+              const matchingRels = rels.filter((rel: Relationship) => ('' + rel.id) === metadatum.virtualValue);
               if (matchingRels.length > 0) {
                 const matchingRel = matchingRels[0];
                 let queryId = matchingRel.leftId;

src/app/core/shared/metadata-representation/item/item-metadata-representation.model.spec.ts

@@ -1,5 +1,5 @@
 import { MetadataRepresentationType } from '../metadata-representation.model';
-import { ItemMetadataRepresentation, ItemTypeToPrimaryValue } from './item-metadata-representation.model';
+import { ItemMetadataRepresentation, ItemTypeToValue } from './item-metadata-representation.model';
 import { Item } from '../../item.model';
 import { Metadatum } from '../../metadatum.model';
 
@@ -7,14 +7,14 @@ describe('ItemMetadataRepresentation', () => {
   const valuePrefix = 'Test value for ';
   const item = new Item();
   let itemMetadataRepresentation: ItemMetadataRepresentation;
-  item.metadata = Object.keys(ItemTypeToPrimaryValue).map((key: string) => {
+  item.metadata = Object.keys(ItemTypeToValue).map((key: string) => {
     return Object.assign(new Metadatum(), {
-      key: ItemTypeToPrimaryValue[key],
-      value: `${valuePrefix}${ItemTypeToPrimaryValue[key]}`
+      key: ItemTypeToValue[key],
+      value: `${valuePrefix}${ItemTypeToValue[key]}`
     });
   });
 
-  for (const itemType of Object.keys(ItemTypeToPrimaryValue)) {
+  for (const itemType of Object.keys(ItemTypeToValue)) {
     describe(`when creating an ItemMetadataRepresentation with item-type "${itemType}"`, () => {
       beforeEach(() => {
         itemMetadataRepresentation = Object.assign(new ItemMetadataRepresentation(itemType), item);
@@ -24,8 +24,8 @@ describe('ItemMetadataRepresentation', () => {
         expect(itemMetadataRepresentation.representationType).toEqual(MetadataRepresentationType.Item);
       });
 
-      it('should return the correct value when calling getPrimaryValue', () => {
-        expect(itemMetadataRepresentation.getPrimaryValue()).toEqual(`${valuePrefix}${ItemTypeToPrimaryValue[itemType]}`);
+      it('should return the correct value when calling getValue', () => {
+        expect(itemMetadataRepresentation.getValue()).toEqual(`${valuePrefix}${ItemTypeToValue[itemType]}`);
       });
 
       it('should return the correct item type', () => {

src/app/core/shared/metadata-representation/item/item-metadata-representation.model.ts

@@ -3,15 +3,15 @@ import { MetadataRepresentation, MetadataRepresentationType } from '../metadata-
 import { hasValue } from '../../../../shared/empty.util';
 
 /**
- * An object to convert item types into the metadata field it should render for the item's primary value
+ * An object to convert item types into the metadata field it should render for the item's value
  */
-export const ItemTypeToPrimaryValue = {
+export const ItemTypeToValue = {
   Default: 'dc.title',
   Person: 'dc.contributor.author'
 };
 
 /**
- * This class defines the way the item it extends should be represented as metadata
+ * This class determines which fields to use when rendering an Item as a metadata value.
  */
 export class ItemMetadataRepresentation extends Item implements MetadataRepresentation {
 
@@ -35,12 +35,12 @@ export class ItemMetadataRepresentation extends Item implements MetadataRepresen
   /**
    * Get the value to display, depending on the itemType
    */
-  getPrimaryValue(): string {
+  getValue(): string {
     let metadata;
-    if (hasValue(ItemTypeToPrimaryValue[this.itemType])) {
-      metadata = ItemTypeToPrimaryValue[this.itemType];
+    if (hasValue(ItemTypeToValue[this.itemType])) {
+      metadata = ItemTypeToValue[this.itemType];
     } else {
-      metadata = ItemTypeToPrimaryValue.Default;
+      metadata = ItemTypeToValue.Default;
     }
     return this.findMetadata(metadata);
   }

src/app/core/shared/metadata-representation/metadata-representation.model.ts

@@ -25,7 +25,7 @@ export interface MetadataRepresentation {
   representationType: MetadataRepresentationType,
 
   /**
-   * Fetches the primary value to be displayed
+   * Fetches the value to be displayed
    */
-  getPrimaryValue(): string
+  getValue(): string
 }

src/app/core/shared/metadata-representation/metadatum/metadatum-representation.model.spec.ts

@@ -26,7 +26,7 @@ describe('MetadatumRepresentation', () => {
     });
 
     it('should return the correct value when calling getPrimaryValue', () => {
-      expect(metadatumRepresentation.getPrimaryValue()).toEqual(normalMetadatum.value);
+      expect(metadatumRepresentation.getValue()).toEqual(normalMetadatum.value);
     });
 
     it('should return the correct item type', () => {
@@ -43,8 +43,8 @@ describe('MetadatumRepresentation', () => {
       expect(metadatumRepresentation.representationType).toEqual(MetadataRepresentationType.AuthorityControlled);
     });
 
-    it('should return the correct value when calling getPrimaryValue', () => {
-      expect(metadatumRepresentation.getPrimaryValue()).toEqual(authorityMetadatum.value);
+    it('should return the correct value when calling getValue', () => {
+      expect(metadatumRepresentation.getValue()).toEqual(authorityMetadatum.value);
     });
 
     it('should return the correct item type', () => {

src/app/core/shared/metadata-representation/metadatum/metadatum-representation.model.ts

@@ -31,7 +31,7 @@ export class MetadatumRepresentation extends Metadatum implements MetadataRepres
   /**
    * Get the value to display
    */
-  getPrimaryValue(): string {
+  getValue(): string {
     return this.value;
   }
 

src/app/core/shared/metadatum.model.spec.ts

@@ -0,0 +1,67 @@
+import { Metadatum } from './metadatum.model';
+
+describe('Metadatum', () => {
+  let metadatum: Metadatum ;
+
+  beforeEach(() => {
+    metadatum = new Metadatum();
+  });
+
+  describe('isVirtual', () => {
+    describe('when the metadatum has no authority key', () => {
+      beforeEach(() => {
+        metadatum.authority = undefined;
+      });
+
+      it('should return false', () => {
+        expect(metadatum.isVirtual).toBe(false);
+      });
+    });
+
+    describe('when the metadatum has an authority key', () => {
+      describe('but it doesn\'t start with the virtual prefix', () => {
+        beforeEach(() => {
+          metadatum.authority = 'value';
+        });
+
+        it('should return false', () => {
+          expect(metadatum.isVirtual).toBe(false);
+        });
+      });
+
+      describe('and it starts with the virtual prefix', () => {
+        beforeEach(() => {
+          metadatum.authority = 'virtual::value';
+        });
+
+        it('should return true', () => {
+          expect(metadatum.isVirtual).toBe(true);
+        });
+      });
+
+    });
+
+  });
+
+  describe('virtualValue', () => {
+    describe('when the metadatum isn\'t virtual', () => {
+      beforeEach(() => {
+        metadatum.authority = 'value';
+      });
+
+      it('should return undefined', () => {
+        expect(metadatum.virtualValue).toBeUndefined();
+      });
+    });
+
+    describe('when the metadatum is virtual', () => {
+      beforeEach(() => {
+        metadatum.authority = 'virtual::value';
+      });
+
+      it('should return everything in the authority key after virtual::', () => {
+        expect(metadatum.virtualValue).toBe('value');
+      });
+    });
+  });
+});

src/app/core/shared/metadatum.model.ts

@@ -1,4 +1,7 @@
 import { autoserialize } from 'cerialize';
+import { hasValue } from '../../shared/empty.util';
+
+const VIRTUAL_METADATA_PREFIX = 'virtual::';
 
 export class Metadatum {
 
@@ -33,4 +36,29 @@ export class Metadatum {
   @autoserialize
   authority: string;
 
+  /**
+   * The authority confidence value
+   */
+  @autoserialize
+  confidence: number;
+
+  /**
+   * Returns true if this Metadatum's authority key starts with 'virtual::'
+   */
+  get isVirtual(): boolean {
+    return hasValue(this.authority) && this.authority.startsWith(VIRTUAL_METADATA_PREFIX);
+  }
+
+  /**
+   * If this is a virtual Metadatum, it returns everything in the authority key after 'virtual::'.
+   * Returns undefined otherwise.
+   */
+  get virtualValue(): string {
+    if (this.isVirtual) {
+      return this.authority.substring(this.authority.indexOf(VIRTUAL_METADATA_PREFIX) + VIRTUAL_METADATA_PREFIX.length);
+    } else {
+      return undefined;
+    }
+  }
+
 }

src/app/shared/object-list/metadata-representation-list-element/plain-text/plain-text-metadata-list-element.component.html

@@ -1,3 +1,3 @@
 <div>
-  <span>{{metadataRepresentation.getPrimaryValue()}}</span>
+  <span>{{metadataRepresentation.getValue()}}</span>
 </div>

src/app/shared/object-list/metadata-representation-list-element/plain-text/plain-text-metadata-list-element.component.ts

@@ -13,7 +13,7 @@ import { VIEW_MODE_METADATA } from '../../../../+item-page/simple/metadata-repre
 })
 /**
  * A component for displaying MetadataRepresentation objects in the form of plain text
- * It will simply use the value retrieved from MetadataRepresentation.getPrimaryValue() to display as plain text
+ * It will simply use the value retrieved from MetadataRepresentation.getValue() to display as plain text
  */
 export class PlainTextMetadataListElementComponent extends MetadataRepresentationListElementComponent {
 }