moved meta service into applicable page components

src/app/+collection-page/collection-page-routing.module.ts

@@ -2,12 +2,11 @@ import { NgModule } from '@angular/core';
 import { RouterModule } from '@angular/router';
 
 import { CollectionPageComponent } from './collection-page.component';
-import { NormalizedCollection } from '../core/cache/models/normalized-collection.model';
 
 @NgModule({
   imports: [
     RouterModule.forChild([
-      { path: ':id', component: CollectionPageComponent, pathMatch: 'full', data: { type: NormalizedCollection } }
+      { path: ':id', component: CollectionPageComponent, pathMatch: 'full' }
     ])
   ]
 })

src/app/+collection-page/collection-page.component.ts

@@ -7,6 +7,8 @@ import {
 } from '@angular/core';
 import { ActivatedRoute, Params } from '@angular/router';
 
+import { PageInfo } from '../core/shared/page-info.model';
+import { Observable } from 'rxjs/Observable';
 import { Subscription } from 'rxjs/Subscription';
 
 import { Collection } from '../core/shared/collection.model';
@@ -18,8 +20,8 @@ import { Item } from '../core/shared/item.model';
 import { SortOptions, SortDirection } from '../core/cache/models/sort-options.model';
 import { PaginationComponentOptions } from '../shared/pagination/pagination-component-options.model';
 import { hasValue, isNotEmpty, isUndefined } from '../shared/empty.util';
-import { PageInfo } from '../core/shared/page-info.model';
+
-import { Observable } from 'rxjs/Observable';
+import { MetadataService } from '../core/metadata/metadata.service';
 
 import { fadeIn, fadeInOut } from '../shared/animations/fade';
 
@@ -41,9 +43,12 @@ export class CollectionPageComponent implements OnInit, OnDestroy {
   private subs: Subscription[] = [];
   private collectionId: string;
 
-  constructor(private collectionDataService: CollectionDataService,
+  constructor(
+    private collectionDataService: CollectionDataService,
     private itemDataService: ItemDataService,
-              private route: ActivatedRoute) {
+    private metadata: MetadataService,
+    private route: ActivatedRoute
+  ) {
     this.paginationConfig = new PaginationComponentOptions();
     this.paginationConfig.id = 'collection-page-pagination';
     this.paginationConfig.pageSizeOptions = [4];
@@ -57,12 +62,13 @@ export class CollectionPageComponent implements OnInit, OnDestroy {
       Observable.combineLatest(
         this.route.params,
         this.route.queryParams,
-        (params, queryParams,) => {
+        (params, queryParams, ) => {
           return Object.assign({}, params, queryParams);
         })
         .subscribe((params) => {
           this.collectionId = params.id;
           this.collectionData = this.collectionDataService.findById(this.collectionId);
+          this.metadata.processRemoteData(this.collectionData);
           this.subs.push(this.collectionData.payload.subscribe((collection) => this.logoData = collection.logo));
 
           const page = +params.page || this.paginationConfig.currentPage;

src/app/+community-page/community-page-routing.module.ts

@@ -2,12 +2,11 @@ import { NgModule } from '@angular/core';
 import { RouterModule } from '@angular/router';
 
 import { CommunityPageComponent } from './community-page.component';
-import { NormalizedCommunity } from '../core/cache/models/normalized-community.model';
 
 @NgModule({
   imports: [
     RouterModule.forChild([
-      { path: ':id', component: CommunityPageComponent, pathMatch: 'full', data: { type: NormalizedCommunity } }
+      { path: ':id', component: CommunityPageComponent, pathMatch: 'full' }
     ])
   ]
 })

src/app/+community-page/community-page.component.ts

@@ -9,6 +9,8 @@ import { RemoteData } from '../core/data/remote-data';
 import { CommunityDataService } from '../core/data/community-data.service';
 import { hasValue } from '../shared/empty.util';
 
+import { MetadataService } from '../core/metadata/metadata.service';
+
 import { fadeInOut } from '../shared/animations/fade';
 
 @Component({
@@ -24,6 +26,7 @@ export class CommunityPageComponent implements OnInit, OnDestroy {
 
   constructor(
     private communityDataService: CommunityDataService,
+    private metadata: MetadataService,
     private route: ActivatedRoute
   ) {
 
@@ -32,15 +35,13 @@ export class CommunityPageComponent implements OnInit, OnDestroy {
   ngOnInit(): void {
     this.route.params.subscribe((params: Params) => {
       this.communityData = this.communityDataService.findById(params.id);
-      this.subs.push(this.communityData.payload
+      this.metadata.processRemoteData(this.communityData);
-        .subscribe((community) => this.logoData = community.logo));
+      this.subs.push(this.communityData.payload.subscribe((community) => this.logoData = community.logo));
     });
   }
 
   ngOnDestroy(): void {
-    this.subs
+    this.subs.filter((sub) => hasValue(sub)).forEach((sub) => sub.unsubscribe());
-      .filter((sub) => hasValue(sub))
-      .forEach((sub) => sub.unsubscribe());
   }
 
 }

src/app/+item-page/full/full-item-page.component.ts

@@ -1,15 +1,17 @@
 import { Component, OnInit } from '@angular/core';
-import { animate, state, transition, trigger, style, keyframes } from '@angular/animations';
+import { ActivatedRoute } from '@angular/router';
 
 import { Observable } from 'rxjs/Observable';
 
 import { ItemPageComponent } from '../simple/item-page.component';
 import { Metadatum } from '../../core/shared/metadatum.model';
 import { ItemDataService } from '../../core/data/item-data.service';
-import { ActivatedRoute } from '@angular/router';
+
 import { RemoteData } from '../../core/data/remote-data';
 import { Item } from '../../core/shared/item.model';
 
+import { MetadataService } from '../../core/metadata/metadata.service';
+
 import { fadeInOut } from '../../shared/animations/fade';
 
 /**
@@ -30,8 +32,8 @@ export class FullItemPageComponent extends ItemPageComponent implements OnInit {
 
   metadata: Observable<Metadatum[]>;
 
-  constructor(route: ActivatedRoute, items: ItemDataService) {
+  constructor(route: ActivatedRoute, items: ItemDataService, metadataService: MetadataService) {
-    super(route, items);
+    super(route, items, metadataService);
   }
 
   /*** AoT inheritance fix, will hopefully be resolved in the near future **/

src/app/+item-page/item-page-routing.module.ts

@@ -3,13 +3,12 @@ import { RouterModule } from '@angular/router';
 
 import { ItemPageComponent } from './simple/item-page.component';
 import { FullItemPageComponent } from './full/full-item-page.component';
-import { NormalizedItem } from '../core/cache/models/normalized-item.model';
 
 @NgModule({
   imports: [
     RouterModule.forChild([
-      { path: ':id', component: ItemPageComponent, pathMatch: 'full', data: { type: NormalizedItem } },
+      { path: ':id', component: ItemPageComponent, pathMatch: 'full' },
-      { path: ':id/full', component: FullItemPageComponent, data: { type: NormalizedItem } }
+      { path: ':id/full', component: FullItemPageComponent }
     ])
   ]
 })

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

@@ -8,6 +8,8 @@ import { ItemDataService } from '../../core/data/item-data.service';
 import { RemoteData } from '../../core/data/remote-data';
 import { Bitstream } from '../../core/shared/bitstream.model';
 
+import { MetadataService } from '../../core/metadata/metadata.service';
+
 import { fadeInOut } from '../../shared/animations/fade';
 
 /**
@@ -31,7 +33,11 @@ export class ItemPageComponent implements OnInit {
 
   thumbnail: Observable<Bitstream>;
 
-  constructor(private route: ActivatedRoute, private items: ItemDataService) {
+  constructor(
+    private route: ActivatedRoute,
+    private items: ItemDataService,
+    private metadataService: MetadataService
+  ) {
 
   }
 
@@ -44,6 +50,7 @@ export class ItemPageComponent implements OnInit {
   initialize(params) {
     this.id = +params.id;
     this.item = this.items.findById(params.id);
+    this.metadataService.processRemoteData(this.item);
     this.thumbnail = this.item.payload.flatMap((i) => i.getThumbnail());
   }
 

src/app/core/metadata/metadata.service.spec.ts

@@ -4,7 +4,7 @@ import { RouterTestingModule } from '@angular/router/testing';
 import { Location, CommonModule } from '@angular/common';
 import { Component, CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
 import { By, Meta, MetaDefinition, Title } from '@angular/platform-browser';
-import { Router } from '@angular/router';
+import { ActivatedRoute, Router } from '@angular/router';
 
 import { TranslateModule, TranslateLoader } from '@ngx-translate/core';
 
@@ -19,17 +19,16 @@ import { CoreState } from '../core.reducers';
 import { GlobalConfig } from '../../../config/global-config.interface';
 import { ENV_CONFIG, GLOBAL_CONFIG } from '../../../config';
 
+import { ItemDataService } from '../data/item-data.service';
 import { ObjectCacheService } from '../cache/object-cache.service';
+import { RemoteDataBuildService } from '../cache/builders/remote-data-build.service';
 import { RequestService } from '../data/request.service';
 import { ResponseCacheService } from '../cache/response-cache.service';
-import { RemoteDataBuildService } from '../cache/builders/remote-data-build.service';
 
+import { RemoteData } from '../../core/data/remote-data';
 import { Item } from '../../core/shared/item.model';
-import { NormalizedItem } from '../cache/models/normalized-item.model';
 
 import { MockItem } from '../../shared/mocks/mock-item';
-import { MockNormalizedItem } from '../../shared/mocks/mock-normalized-item';
-import { MockRouter } from '../../shared/mocks/mock-router';
 import { MockTranslateLoader } from '../../shared/mocks/mock-translate-loader';
 
 /* tslint:disable:max-classes-per-file */
@@ -42,7 +41,13 @@ class TestComponent {
   }
 }
 
-@Component({ template: '' }) class DummyItemComponent { }
+@Component({ template: '' }) class DummyItemComponent {
+  constructor(private route: ActivatedRoute, private items: ItemDataService, private metadata: MetadataService) {
+    this.route.params.subscribe((params) => {
+      this.metadata.processRemoteData(this.items.findById(params.id));
+    });
+  }
+}
 /* tslint:enable:max-classes-per-file */
 
 describe('MetadataService', () => {
@@ -58,6 +63,7 @@ describe('MetadataService', () => {
   let responseCacheService: ResponseCacheService;
   let requestService: RequestService;
   let remoteDataBuildService: RemoteDataBuildService;
+  let itemDataService: ItemDataService;
 
   let location: Location;
   let router: Router;
@@ -88,8 +94,8 @@ describe('MetadataService', () => {
           }
         }),
         RouterTestingModule.withRoutes([
-          { path: 'items/:id', component: DummyItemComponent, pathMatch: 'full', data: { type: NormalizedItem } },
+          { path: 'items/:id', component: DummyItemComponent, pathMatch: 'full' },
-          { path: 'other', component: DummyItemComponent, pathMatch: 'full', data: { title: 'Dummy Title', description: 'This is a dummy component for testing!' } }
+          { path: 'other', component: DummyItemComponent, pathMatch: 'full', data: { title: 'Dummy Title', description: 'This is a dummy item component for testing!' } }
         ])
       ],
       declarations: [
@@ -104,12 +110,14 @@ describe('MetadataService', () => {
         { provide: GLOBAL_CONFIG, useValue: ENV_CONFIG },
         Meta,
         Title,
+        ItemDataService,
         MetadataService
       ],
       schemas: [CUSTOM_ELEMENTS_SCHEMA]
     });
     meta = TestBed.get(Meta);
     title = TestBed.get(Title);
+    itemDataService = TestBed.get(ItemDataService);
     metadataService = TestBed.get(MetadataService);
 
     envConfig = TestBed.get(GLOBAL_CONFIG);
@@ -122,14 +130,8 @@ describe('MetadataService', () => {
     tagStore = metadataService.getTagStore();
   });
 
-  beforeEach(() => {
-    spyOn(objectCacheService, 'getByUUID').and.returnValue(Observable.create((observer) => {
-      observer.next(MockNormalizedItem);
-    }));
-  });
-
   it('items page should set meta tags', fakeAsync(() => {
-    spyOn(remoteDataBuildService, 'build').and.returnValue(MockItem);
+    spyOn(itemDataService, 'findById').and.returnValue(mockRemoteData(MockItem));
     router.navigate(['/items/0ec7ff22-f211-40ab-a69e-c819b0b1f357']);
     tick();
     expect(title.getTitle()).toEqual('Test PowerPoint Document');
@@ -142,7 +144,7 @@ describe('MetadataService', () => {
   }));
 
   it('items page should set meta tags as published Thesis', fakeAsync(() => {
-    spyOn(remoteDataBuildService, 'build').and.returnValue(mockPublisher(mockType(MockItem, 'Thesis')));
+    spyOn(itemDataService, 'findById').and.returnValue(mockRemoteData(mockPublisher(mockType(MockItem, 'Thesis'))));
     router.navigate(['/items/0ec7ff22-f211-40ab-a69e-c819b0b1f357']);
     tick();
     expect(tagStore.get('citation_dissertation_name')[0].content).toEqual('Test PowerPoint Document');
@@ -152,14 +154,14 @@ describe('MetadataService', () => {
   }));
 
   it('items page should set meta tags as published Technical Report', fakeAsync(() => {
-    spyOn(remoteDataBuildService, 'build').and.returnValue(mockPublisher(mockType(MockItem, 'Technical Report')));
+    spyOn(itemDataService, 'findById').and.returnValue(mockRemoteData(mockPublisher(mockType(MockItem, 'Technical Report'))));
     router.navigate(['/items/0ec7ff22-f211-40ab-a69e-c819b0b1f357']);
     tick();
     expect(tagStore.get('citation_technical_report_institution')[0].content).toEqual('Mock Publisher');
   }));
 
   it('other navigation should title and description', fakeAsync(() => {
-    spyOn(remoteDataBuildService, 'build').and.returnValue(MockItem);
+    spyOn(itemDataService, 'findById').and.returnValue(mockRemoteData(MockItem));
     router.navigate(['/items/0ec7ff22-f211-40ab-a69e-c819b0b1f357']);
     tick();
     expect(tagStore.size).toBeGreaterThan(0)
@@ -168,9 +170,38 @@ describe('MetadataService', () => {
     expect(tagStore.size).toEqual(2);
     expect(title.getTitle()).toEqual('Dummy Title');
     expect(tagStore.get('title')[0].content).toEqual('Dummy Title');
-    expect(tagStore.get('description')[0].content).toEqual('This is a dummy component for testing!');
+    expect(tagStore.get('description')[0].content).toEqual('This is a dummy item component for testing!');
   }));
 
+  const mockRemoteData = (mockItem: Item): RemoteData<Item> => {
+    return new RemoteData<Item>(
+      Observable.create((observer) => {
+        observer.next('');
+      }),
+      Observable.create((observer) => {
+        observer.next(false);
+      }),
+      Observable.create((observer) => {
+        observer.next(false);
+      }),
+      Observable.create((observer) => {
+        observer.next(true);
+      }),
+      Observable.create((observer) => {
+        observer.next('');
+      }),
+      Observable.create((observer) => {
+        observer.next(200);
+      }),
+      Observable.create((observer) => {
+        observer.next({});
+      }),
+      Observable.create((observer) => {
+        observer.next(MockItem);
+      })
+    );
+  }
+
   const mockType = (mockItem: Item, type: string): Item => {
     const typedMockItem = Object.assign(new Item(), mockItem) as Item;
     for (const metadatum of typedMockItem.metadata) {

src/app/core/metadata/metadata.service.ts

@@ -17,13 +17,12 @@ import { TranslateService } from '@ngx-translate/core';
 import { BehaviorSubject } from 'rxjs/BehaviorSubject';
 import { Observable } from 'rxjs/Observable';
 
+import { RemoteData } from '../data/remote-data';
 import { Bitstream } from '../shared/bitstream.model';
 import { CacheableObject } from '../cache/object-cache.reducer';
 import { DSpaceObject } from '../shared/dspace-object.model';
 import { Item } from '../shared/item.model';
 import { Metadatum } from '../shared/metadatum.model';
-import { ObjectCacheService } from '../cache/object-cache.service';
-import { RemoteDataBuildService } from '../cache/builders/remote-data-build.service';
 
 import { GLOBAL_CONFIG, GlobalConfig } from '../../../config';
 
@@ -38,8 +37,6 @@ export class MetadataService {
 
   constructor(
     private router: Router,
-    private objectCacheService: ObjectCacheService,
-    private remoteDataBuildService: RemoteDataBuildService,
     private translate: TranslateService,
     private meta: Meta,
     private title: Title,
@@ -67,18 +64,19 @@ export class MetadataService {
       });
   }
 
-  private processRouteChange(routeInfo: any): void {
+  public processRemoteData(remoteData: RemoteData<CacheableObject>): void {
-    if (routeInfo.params.value.id && routeInfo.data.value.type) {
+    remoteData.payload.take(1).subscribe((dspaceObject: DSpaceObject) => {
-      this.objectCacheService.getByUUID(routeInfo.params.value.id, routeInfo.data.value.type)
-        .first().subscribe((normalizedObject: CacheableObject) => {
-          const dspaceObject = this.remoteDataBuildService.build(normalizedObject) as DSpaceObject;
       if (!this.initialized) {
         this.initialize(dspaceObject);
       }
       this.currentObject.next(dspaceObject);
     });
-    } else {
+  }
+
+  private processRouteChange(routeInfo: any): void {
+    if (routeInfo.params.value.id === undefined) {
       this.clearMetaTags();
+    }
     if (routeInfo.data.value.title) {
       this.translate.get(routeInfo.data.value.title).take(1).subscribe((translatedTitle: string) => {
         this.addMetaTag('title', translatedTitle);
@@ -91,7 +89,6 @@ export class MetadataService {
       });
     }
   }
-  }
 
   private initialize(dspaceObject: DSpaceObject): void {
     this.currentObject = new BehaviorSubject<DSpaceObject>(dspaceObject);

src/app/shared/mocks/mock-normalized-item.ts

@@ -1,114 +0,0 @@
-import { NormalizedItem } from '../../core/cache/models/normalized-item.model';
-
-export const MockNormalizedItem: NormalizedItem = Object.assign(new NormalizedItem(), {
-  handle: '10673/6',
-  lastModified: new Date('2017-04-24T19:44:08.178+0000'),
-  isArchived: true,
-  isDiscoverable: true,
-  isWithdrawn: false,
-  bitstreams: [
-    'https://dspace7.4science.it/dspace-spring-rest/api/core/bitstreams/a7cd7d97-4e40-41db-80a8-fac908b63bb8',
-    'https://dspace7.4science.it/dspace-spring-rest/api/core/bitstreams/9ff3df0d-1709-472f-8c00-d3e8db2153c8',
-    'https://dspace7.4science.it/dspace-spring-rest/api/core/bitstreams/d660a4b8-e7cc-45cd-b026-35f98c5bd3ba'
-  ],
-  self: 'https://dspace7.4science.it/dspace-spring-rest/api/core/items/0ec7ff22-f211-40ab-a69e-c819b0b1f357',
-  id: '0ec7ff22-f211-40ab-a69e-c819b0b1f357',
-  uuid: '0ec7ff22-f211-40ab-a69e-c819b0b1f357',
-  type: 'item',
-  name: 'Test PowerPoint Document',
-  metadata: [
-    {
-      key: 'dc.creator',
-      language: 'en_US',
-      value: 'Doe, Jane L'
-    },
-    {
-      key: 'dc.date.accessioned',
-      language: null,
-      value: '1650-06-26T19:58:25Z'
-    },
-    {
-      key: 'dc.date.available',
-      language: null,
-      value: '1650-06-26T19:58:25Z'
-    },
-    {
-      key: 'dc.date.issued',
-      language: null,
-      value: '1650-06-26'
-    },
-    {
-      key: 'dc.identifier.issn',
-      language: 'en_US',
-      value: '123456789'
-    },
-    {
-      key: 'dc.identifier.uri',
-      language: null,
-      value: 'http://dspace7.4science.it/xmlui/handle/10673/6'
-    },
-    {
-      key: 'dc.description.abstract',
-      language: 'en_US',
-      value: 'This is really just a sample abstract. If it was a real abstract it would contain useful information about this test document. Sorry though, nothing useful in this paragraph. You probably shouldn\'t have even bothered to read it!'
-    },
-    {
-      key: 'dc.description.provenance',
-      language: 'en',
-      value: 'Made available in DSpace on 2012-06-26T19:58:25Z (GMT). No. of bitstreams: 2\r\ntest_ppt.ppt: 12707328 bytes, checksum: a353fc7d29b3c558c986f7463a41efd3 (MD5)\r\ntest_ppt.pptx: 12468572 bytes, checksum: 599305edb4ebee329667f2c35b14d1d6 (MD5)'
-    },
-    {
-      key: 'dc.description.provenance',
-      language: 'en',
-      value: 'Restored into DSpace on 2013-06-13T09:17:34Z (GMT).'
-    },
-    {
-      key: 'dc.description.provenance',
-      language: 'en',
-      value: 'Restored into DSpace on 2013-06-13T11:04:16Z (GMT).'
-    },
-    {
-      key: 'dc.description.provenance',
-      language: 'en',
-      value: 'Restored into DSpace on 2017-04-24T19:44:08Z (GMT).'
-    },
-    {
-      key: 'dc.language',
-      language: 'en_US',
-      value: 'en'
-    },
-    {
-      key: 'dc.rights',
-      language: 'en_US',
-      value: '© Jane Doe'
-    },
-    {
-      key: 'dc.subject',
-      language: 'en_US',
-      value: 'keyword1'
-    },
-    {
-      key: 'dc.subject',
-      language: 'en_US',
-      value: 'keyword2'
-    },
-    {
-      key: 'dc.subject',
-      language: 'en_US',
-      value: 'keyword3'
-    },
-    {
-      key: 'dc.title',
-      language: 'en_US',
-      value: 'Test PowerPoint Document'
-    },
-    {
-      key: 'dc.type',
-      language: 'en_US',
-      value: 'text'
-    }
-  ],
-  owningCollection: [
-    'https://dspace7.4science.it/dspace-spring-rest/api/core/collections/1c11f3f1-ba1f-4f36-908a-3f1ea9a557eb'
-  ]
-})