TSK-975: Remove unnecessary initializers

web/src/app/administration/access-items-management/access-items-management.component.html

@@ -173,10 +173,10 @@
                 <button type="button" class="close" data-dismiss="modal">&times;</button>
               </div>
               <div class="modal-body">
-                <ul *ngIf="belongingGroups !== undefined && belongingGroups.length > 0 " class="list-group">
+                <ul *ngIf="belongingGroups && belongingGroups.length > 0 " class="list-group">
                   <li *ngFor="let group of belongingGroups" class="list-group-item">{{group.name}}</li>
                 </ul>
-                <p *ngIf="belongingGroups === undefined || belongingGroups.length === 0">The user is not associated to
+                <p *ngIf="!belongingGroups">The user is not associated to
                   any groups</p>
               </div>
               <div class="modal-footer">
@@ -194,4 +194,4 @@
       </form>
     </div>
   </div>
-</div>
+</div>

web/src/app/administration/classification/details/classification-details.component.spec.ts

@@ -67,9 +67,8 @@ describe('ClassificationDetailsComponent', () => {
       spyOn(classificationCategoriesService, 'getCategories').and.returnValue(of(['firstCategory', 'secondCategory']));
       spyOn(classificationsService, 'deleteClassification').and.returnValue(of(true));
       spyOn(classificationCategoriesService, 'getCategoryIcon').and.returnValue(new Pair('assets/icons/categories/external.svg'));
-      component.classification = new ClassificationDefinition('id1', undefined, undefined, undefined, undefined, undefined, undefined,
+      component.classification = new ClassificationDefinition('id1');
-        undefined, undefined, undefined, undefined, undefined, undefined, undefined, undefined, undefined, undefined, undefined, undefined,
+      component.classification._links = new LinksClassification({ 'self': '' });
-        undefined, undefined, undefined, undefined, new LinksClassification({ 'self': '' }));
       treeService = TestBed.get(TreeService);
       fixture.detectChanges();
       done();

web/src/app/administration/classification/details/classification-details.component.ts

@@ -102,18 +102,18 @@ export class ClassificationDetailsComponent implements OnInit, OnDestroy {
 
     this.routeSubscription = this.route.params.subscribe(params => {
       let id = params['id'];
-      this.action = undefined;
+      delete this.action;
       if (id && id.indexOf('new-classification') !== -1) {
         this.action = ACTION.CREATE;
         this.badgeMessage = 'Creating new classification';
         id = id.replace('new-classification/', '');
         if (id === 'undefined') {
-          id = undefined;
+          id = '';
         }
         this.fillClassificationInformation(this.classification ? this.classification : new ClassificationDefinition())
       }
 
-      if (!this.classification || this.classification.classificationId !== id && id && id !== '') {
+      if (!this.classification || this.classification.classificationId !== id && id ) {
         this.selectClassification(id);
       }
     });
@@ -140,7 +140,7 @@ export class ClassificationDetailsComponent implements OnInit, OnDestroy {
   }
 
   backClicked(): void {
-    this.classificationsService.selectClassification(undefined);
+    this.classificationsService.selectClassification();
     this.router.navigate(['./'], { relativeTo: this.route.parent });
   }
 
@@ -167,8 +167,8 @@ export class ClassificationDetailsComponent implements OnInit, OnDestroy {
   }
 
   private initProperties() {
-    this.classification = undefined;
+    delete this.classification;
-    this.action = undefined
+    delete this.action;
   }
 
   private async onSave() {
@@ -287,9 +287,9 @@ export class ClassificationDetailsComponent implements OnInit, OnDestroy {
       .deleteClassification(this.classification._links.self.href)
       .subscribe(() => {
         const key = this.classification.key;
-        this.classification = undefined;
+        delete this.classification;
         this.afterRequest();
-        this.classificationsService.selectClassification(undefined);
+        this.classificationsService.selectClassification();
         this.router.navigate(['taskana/administration/classifications']);
         this.alertService.triggerAlert(new AlertModel(AlertType.SUCCESS, `Classification ${key} was removed successfully`))
       }, error => {

web/src/app/administration/classification/master/list/classification-list.component.ts

@@ -75,10 +75,10 @@ export class ClassificationListComponent implements OnInit, OnDestroy {
     this.classifications = [];
     this.categoryService.selectClassificationType(classificationTypeSelected);
     this.getClassifications();
-    this.selectClassification(undefined);
+    this.selectClassification();
   }
 
-  selectClassification(id: string) {
+  selectClassification(id?: string) {
     this.selectedId = id;
     if (!id) {
       this.router.navigate(['taskana/administration/classifications']);
@@ -128,7 +128,7 @@ export class ClassificationListComponent implements OnInit, OnDestroy {
 
   }
 
-  private getClassifications(key: string = undefined) {
+  private getClassifications(key?: string) {
     this.requestInProgress = true;
     this.classificationService.getClassifications()
       .subscribe((classifications: Array<TreeNodeModel>) => {

web/src/app/administration/components/import-export/import-export.component.ts

@@ -87,7 +87,7 @@ export class ImportExportComponent implements OnInit {
         break;
       default:
         file.value = '';
-        this.generalModalService.triggerMessage(new MessageModal(undefined,
+        this.generalModalService.triggerMessage(new MessageModal('Wrong format',
           `This file format is not allowed! Please use a .json file.`));
     }
     return check;
@@ -133,7 +133,7 @@ export class ImportExportComponent implements OnInit {
         message
       )
     );
-    this.selectedFileInput.files = undefined;
+    delete this.selectedFileInput.files;
     this.resetProgress();
   }
 }

web/src/app/administration/components/type-icon/icon-type.component.ts

@@ -19,7 +19,7 @@ export class IconTypeComponent implements OnInit {
   tooltip = false;
 
   @Input()
-  text: string = undefined;
+  text: string;
 
   public static get allTypes(): Map<string, string> {
     return new Map([['PERSONAL', 'Personal'], ['GROUP', 'Group'], ['CLEARANCE', 'Clearance'], ['TOPIC', 'Topic']])

web/src/app/administration/workbasket/details/access-items/access-items.component.spec.ts

@@ -42,8 +42,11 @@ describe('AccessItemsComponent', () => {
     configureTests(configure).then(testBed => {
       fixture = TestBed.createComponent(AccessItemsComponent);
       component = fixture.componentInstance;
-      component.workbasket = new Workbasket('1', '', '', '', ICONTYPES.TOPIC, '', '', '', '', '', '', '', '', '', '', '', '',
+      component.workbasket = new Workbasket('1');
-        new Links(undefined, undefined, { 'href': 'someurl' }));
+      component.workbasket.type = ICONTYPES.TOPIC;
+      component.workbasket._links = new Links()
+      component.workbasket._links.accessItems = { 'href': 'someurl' };
+
       workbasketService = TestBed.get(WorkbasketService);
       alertService = TestBed.get(AlertService);
       spyOn(workbasketService, 'getWorkBasketAccessItems').and.returnValue(of(new WorkbasketAccessItemsResource(

web/src/app/administration/workbasket/details/access-items/access-items.component.ts

@@ -123,11 +123,13 @@ export class AccessItemsComponent implements OnChanges, OnDestroy {
   }
 
   addAccessItem() {
-    const newForm = this.formBuilder.group(
+    const workbasketAccessItems = new WorkbasketAccessItems();
-      new WorkbasketAccessItems(undefined, this.workbasket.workbasketId, '', '', true));
+    workbasketAccessItems.workbasketId = this.workbasket.workbasketId;
+    workbasketAccessItems.permRead = true;
+    const newForm = this.formBuilder.group(workbasketAccessItems);
     newForm.controls['accessId'].setValidators(Validators.required);
     this.accessItemsGroups.push(newForm);
-    this.accessItemsClone.push(new WorkbasketAccessItems(undefined, this.workbasket.workbasketId, '', '', true));
+    this.accessItemsClone.push(workbasketAccessItems);
   }
 
   clear() {
@@ -200,7 +202,7 @@ export class AccessItemsComponent implements OnChanges, OnDestroy {
   }
   private setWorkbasketIdForCopy(workbasketId: string) {
     this.accessItemsGroups.value.forEach(element => {
-      element.accessItemId = undefined;
+      delete element.accessItemId;
       element.workbasketId = workbasketId;
     });
   }

web/src/app/administration/workbasket/details/distribution-targets/distribution-targets.component.ts

@@ -140,16 +140,16 @@ export class DistributionTargetsComponent implements OnChanges, OnDestroy {
   }
 
   performFilter(dualListFilter: any) {
-    dualListFilter.side === Side.RIGHT ? this.distributionTargetsRight = undefined : this.distributionTargetsLeft = undefined;
+    dualListFilter.side === Side.RIGHT ? delete this.distributionTargetsRight : delete this.distributionTargetsLeft;
-    this.onRequest(dualListFilter.side, false);
+    this.onRequest(false, dualListFilter.side);
-    this.workbasketFilterSubscription = this.workbasketService.getWorkBasketsSummary(true, undefined, undefined, undefined,
+    this.workbasketFilterSubscription = this.workbasketService.getWorkBasketsSummary(true, '', '', '',
-      dualListFilter.filterBy.filterParams.name, dualListFilter.filterBy.filterParams.description, undefined,
+      dualListFilter.filterBy.filterParams.name, dualListFilter.filterBy.filterParams.description, '',
-      dualListFilter.filterBy.filterParams.owner,	dualListFilter.filterBy.filterParams.type, undefined,
+      dualListFilter.filterBy.filterParams.owner,	dualListFilter.filterBy.filterParams.type, '',
-      dualListFilter.filterBy.filterParams.key, undefined, true).subscribe(resultList => {
+      dualListFilter.filterBy.filterParams.key, '', true).subscribe(resultList => {
         (dualListFilter.side === Side.RIGHT) ?
           this.distributionTargetsRight = (resultList.workbaskets) :
           this.distributionTargetsLeft = (resultList.workbaskets);
-        this.onRequest(dualListFilter.side, true);
+        this.onRequest(true, dualListFilter.side);
       });
   }
 
@@ -162,7 +162,7 @@ export class DistributionTargetsComponent implements OnChanges, OnDestroy {
   }
 
   private init() {
-    this.onRequest(undefined);
+    this.onRequest();
     if (!this.workbasket._links.distributionTargets) {
       return;
     }
@@ -215,9 +215,8 @@ export class DistributionTargetsComponent implements OnChanges, OnDestroy {
       TaskanaQueryParameters.pageSize = this.cards + this.distributionTargetsSelected.length;
     }
 
-    this.workbasketSubscription = this.workbasketService.getWorkBasketsSummary(true,
+    this.workbasketSubscription = this.workbasketService.getWorkBasketsSummary(true)
-      undefined, undefined, undefined, undefined, undefined, undefined, undefined, undefined,
+      .subscribe(
-      undefined, undefined, undefined, false).subscribe(
         (distributionTargetsAvailable: WorkbasketSummaryResource) => {
           if (TaskanaQueryParameters.page === 1) {
             this.distributionTargetsLeft = [];
@@ -232,7 +231,7 @@ export class DistributionTargetsComponent implements OnChanges, OnDestroy {
             this.distributionTargetsRight = Object.assign([], distributionTargetsAvailable.workbaskets);
             this.distributionTargetsClone = Object.assign([], distributionTargetsAvailable.workbaskets);
           }
-          this.onRequest(undefined, true);
+          this.onRequest(true);
         });
   }
 
@@ -255,16 +254,16 @@ export class DistributionTargetsComponent implements OnChanges, OnDestroy {
     return originList;
   }
 
-  private onRequest(side: Side = undefined, finished: boolean = false) {
+  private onRequest(finished: boolean = false, side?: Side) {
     if (this.loadingItems) {
       this.loadingItems = false;
     }
     if (finished) {
-      side === undefined ? (this.requestInProgressLeft = false, this.requestInProgressRight = false) :
+      typeof side === 'undefined' ? (this.requestInProgressLeft = false, this.requestInProgressRight = false) :
         side === Side.LEFT ? this.requestInProgressLeft = false : this.requestInProgressRight = false;
       return;
     }
-    side === undefined ? (this.requestInProgressLeft = true, this.requestInProgressRight = true) :
+    typeof side === 'undefined' ? (this.requestInProgressLeft = true, this.requestInProgressRight = true) :
       side === Side.LEFT ? this.requestInProgressLeft = true : this.requestInProgressRight = true;
   }
 

web/src/app/administration/workbasket/details/information/workbasket-information.component.spec.ts

@@ -101,7 +101,7 @@ describe('WorkbasketInformationComponent', () => {
   it('should create a copy of workbasket when workbasket is selected', () => {
     expect(component.workbasketClone).toBeUndefined();
     component.workbasket = new Workbasket('id', 'created', 'keyModified', 'domain', ICONTYPES.TOPIC, 'modified', 'name', 'description',
-      'owner', 'custom1', 'custom2', 'custom3', 'custom4', 'orgLevel1', 'orgLevel2', 'orgLevel3', 'orgLevel4', null);
+      'owner', 'custom1', 'custom2', 'custom3', 'custom4', 'orgLevel1', 'orgLevel2', 'orgLevel3', 'orgLevel4');
     component.ngOnChanges(
       undefined
     );
@@ -185,12 +185,14 @@ describe('WorkbasketInformationComponent', () => {
     }));
 
   it('should trigger requestInProgress service true before  and requestInProgress false after remove a workbasket', () => {
+    const links = new Links({ 'href': 'someUrl' });
+    links.removeDistributionTargets = { 'href': 'someUrl' };
     const workbasket = new Workbasket(undefined, 'created', 'keyModified', 'domain', ICONTYPES.TOPIC,
       'modified', 'name', 'description', 'owner', 'custom1', 'custom2',
       'custom3', 'custom4', 'orgLevel1', 'orgLevel2',
-      'orgLevel3', 'orgLevel4', new Links({ 'href': 'someUrl' }, undefined, undefined, undefined, { 'href': 'someUrl' }));
+      'orgLevel3', 'orgLevel4', links);
     component.workbasket = workbasket;
-    spyOn(workbasketService, 'removeDistributionTarget').and.returnValue(of(''));
+    spyOn(workbasketService, 'removeDistributionTarget').and.returnValue(of(undefined));
     const requestInProgressServiceSpy = spyOn(requestInProgressService, 'setRequestInProgress');
 
     component.removeDistributionTargets();

web/src/app/administration/workbasket/details/workbasket-details.component.ts

@@ -20,7 +20,7 @@ export class WorkbasketDetailsComponent implements OnInit, OnDestroy {
 
   workbasket: Workbasket;
   workbasketCopy: Workbasket;
-  selectedId: string = undefined;
+  selectedId: string;
   showDetail = false;
   requestInProgress = false;
   action: string;
@@ -46,32 +46,30 @@ export class WorkbasketDetailsComponent implements OnInit, OnDestroy {
 
   ngOnInit() {
     this.workbasketSelectedSubscription = this.service.getSelectedWorkBasket().subscribe(workbasketIdSelected => {
-      this.workbasket = undefined;
+      delete this.workbasket;
       this.getWorkbasketInformation(workbasketIdSelected);
     });
 
     this.routeSubscription = this.route.params.subscribe(params => {
-      let id = params['id'];
+      const id = params['id'];
-      this.action = undefined;
+      delete this.action;
-      if (id && id.indexOf('new-workbasket') !== -1) {
+      if (id) {
-        this.tabSelected = 'information';
+        if (id.indexOf('new-workbasket') !== -1) {
-        this.action = ACTION.CREATE;
+          this.tabSelected = 'information';
-        id = undefined;
+          this.action = ACTION.CREATE;
-        this.getWorkbasketInformation(id);
+          this.getWorkbasketInformation();
-      } else if (id && id.indexOf('copy-workbasket') !== -1) {
+        } else if (id.indexOf('copy-workbasket') !== -1) {
-        if (!this.selectedId) {
+          if (!this.selectedId) {
-          this.router.navigate(['./'], { relativeTo: this.route.parent });
+            this.router.navigate(['./'], { relativeTo: this.route.parent });
-          return;
+            return;
+          }
+          this.action = ACTION.COPY;
+          delete this.workbasket.key;
+          this.workbasketCopy = this.workbasket;
+          this.getWorkbasketInformation();
+        } else {
+          this.selectWorkbasket(id);
         }
-        this.action = ACTION.COPY;
-        this.workbasket.key = undefined;
-        this.workbasketCopy = this.workbasket;
-        id = undefined;
-        this.getWorkbasketInformation(id, this.selectedId);
-      }
-
-      if (id && id !== '') {
-        this.selectWorkbasket(id);
       }
     });
 
@@ -79,13 +77,13 @@ export class WorkbasketDetailsComponent implements OnInit, OnDestroy {
       this.showDetail = showDetail;
     });
 
-    this.importingExportingSubscription = this.importExportService.getImportingFinished().subscribe((value: Boolean) => {
+    this.importingExportingSubscription = this.importExportService.getImportingFinished().subscribe(() => {
       if (this.workbasket) { this.getWorkbasketInformation(this.workbasket.workbasketId); }
     })
   }
 
   backClicked(): void {
-    this.service.selectWorkBasket(undefined);
+    this.service.selectWorkBasket();
     this.router.navigate(['./'], { relativeTo: this.route.parent });
   }
 
@@ -98,18 +96,18 @@ export class WorkbasketDetailsComponent implements OnInit, OnDestroy {
     this.service.selectWorkBasket(id);
   }
 
-  private getWorkbasketInformation(workbasketIdSelected: string, copyId: string = undefined) {
+  private getWorkbasketInformation(workbasketIdSelected?: string) {
     this.requestInProgress = true;
 
     if (!workbasketIdSelected && this.action === ACTION.CREATE) { // CREATE
-      this.workbasket = new Workbasket(undefined);
+      this.workbasket = new Workbasket();
       this.domainSubscription = this.domainService.getSelectedDomain().subscribe(domain => {
         this.workbasket.domain = domain;
       });
       this.requestInProgress = false;
     } else if (!workbasketIdSelected && this.action === ACTION.COPY) { // COPY
       this.workbasket = { ...this.workbasketCopy };
-      this.workbasket.workbasketId = undefined;
+      delete this.workbasket.workbasketId;
       this.requestInProgress = false;
     }
     if (workbasketIdSelected) {

web/src/app/administration/workbasket/master/workbasket-list-toolbar/workbasket-list-toolbar.component.spec.ts

@@ -65,8 +65,9 @@ describe('WorkbasketListToolbarComponent', () => {
       debugElement = fixture.debugElement.nativeElement;
       component = fixture.componentInstance;
       component.workbaskets = new Array<WorkbasketSummary>(
-        new WorkbasketSummary('1', 'key1', 'NAME1', 'description 1', 'owner 1',
+        new WorkbasketSummary('1', 'key1', 'NAME1', 'description 1', 'owner 1'));
-          undefined, undefined, undefined, undefined, undefined, undefined, undefined, false, new Links({ 'href': 'selfLink' })));
+      component.workbaskets[0].markedForDeletion = false;
+      component.workbaskets[0]._links = new Links({ 'href': 'selfLink' });
 
       fixture.detectChanges();
       done();

web/src/app/administration/workbasket/master/workbasket-list-toolbar/workbasket-list-toolbar.component.ts

@@ -49,7 +49,7 @@ export class WorkbasketListToolbarComponent implements OnInit {
   }
 
   addWorkbasket() {
-    this.workbasketService.selectWorkBasket(undefined);
+    this.workbasketService.selectWorkBasket();
     this.router.navigate([{ outlets: { detail: ['new-workbasket'] } }], { relativeTo: this.route });
   }
 

web/src/app/administration/workbasket/master/workbasket-list.component.html

@@ -36,5 +36,5 @@
     </div>
   </ng-template>
 </div>
-<taskana-pagination [(page)]="workbasketsResource !== undefined ? workbasketsResource.page : workbasketsResource"
+<taskana-pagination [(page)]="workbasketsResource ? workbasketsResource.page : workbasketsResource"
   [type]="type" [numberOfItems]="workbaskets.length" (changePage)="changePage($event)"></taskana-pagination>

web/src/app/administration/workbasket/master/workbasket-list.component.spec.ts

@@ -53,7 +53,7 @@ const workbasketSummaryResource: WorkbasketSummaryResource = new WorkbasketSumma
 describe('WorkbasketListComponent', () => {
     let component: WorkbasketListComponent;
     let fixture: ComponentFixture<WorkbasketListComponent>;
-    let debugElement: any = undefined;
+    let debugElement: any;
     let workbasketService: WorkbasketService;
     let workbasketSummarySpy;
 
@@ -167,7 +167,7 @@ describe('WorkbasketListComponent', () => {
         component.performFilter(filter);
 
         expect(workbasketSummarySpy.calls.all()[1].args).toEqual([true, 'key', 'asc',
-            undefined, 'someName', 'someDescription', undefined, 'someOwner', 'PERSONAL', undefined, 'someKey', undefined]);
+            '', 'someName', 'someDescription', '', 'someOwner', 'PERSONAL', '', 'someKey', '']);
 
     }));
 

web/src/app/administration/workbasket/master/workbasket-list.component.ts

@@ -104,9 +104,9 @@ export class WorkbasketListComponent implements OnInit, OnDestroy {
     this.requestInProgress = true;
     this.workbaskets = [];
     this.workbasketServiceSubscription = this.workbasketService.getWorkBasketsSummary(
-      true, this.sort.sortBy, this.sort.sortDirection, undefined,
+      true, this.sort.sortBy, this.sort.sortDirection, '',
-      this.filterBy.filterParams.name, this.filterBy.filterParams.description, undefined, this.filterBy.filterParams.owner,
+      this.filterBy.filterParams.name, this.filterBy.filterParams.description, '', this.filterBy.filterParams.owner,
-      this.filterBy.filterParams.type, undefined, this.filterBy.filterParams.key, undefined)
+      this.filterBy.filterParams.type, '', this.filterBy.filterParams.key, '')
       .subscribe(resultList => {
         this.workbasketsResource = resultList;
         this.workbaskets = resultList.workbaskets;

web/src/app/history/services/task-query/task-query.service.ts

@@ -100,7 +100,7 @@ export class TaskQueryService {
         parameters.CUSTOM_4_LIKE = custom4;
         parameters.CREATED = created;
 
-        if (allPages) { TaskanaQueryParameters.page = undefined; TaskanaQueryParameters.pageSize = undefined; }
+        if (allPages) { delete TaskanaQueryParameters.page; delete TaskanaQueryParameters.pageSize; }
 
         return TaskanaQueryParameters.getQueryParameters(parameters);
     }

web/src/app/models/access-id.ts

@@ -2,7 +2,7 @@ import { LinksClassification } from 'app/models/links-classfication';
 
 export class AccessIdDefinition {
     constructor(
-        public accessId: string = undefined,
+        public accessId?: string,
-        public name: string = undefined) {
+        public name?: string) {
     }
 }

web/src/app/models/access-item-workbasket-resource.ts

@@ -4,6 +4,6 @@ import { AccessItemWorkbasket } from './access-item-workbasket';
 export class AccessItemsWorkbasketResource {
     constructor(
         public accessItems: Array<AccessItemWorkbasket> = [],
-        public _links: Links = undefined
+        public _links?: Links
     ) { }
 }

web/src/app/models/access-item-workbasket.ts

@@ -2,9 +2,9 @@ import { Links } from './links';
 
 export class AccessItemWorkbasket {
     constructor(
-        public accessItemId: string = '',
+        public accessItemId: string,
-        public workbasketKey: string = '',
+        public workbasketKey: string,
-        public accessId: string = '',
+        public accessId: string,
         public permRead: boolean = false,
         public permOpen: boolean = false,
         public permAppend: boolean = false,
@@ -22,6 +22,6 @@ export class AccessItemWorkbasket {
         public permCustom10: boolean = false,
         public permCustom11: boolean = false,
         public permCustom12: boolean = false,
-        public _links: Links = undefined
+        public _links?: Links
     ) { }
 }

web/src/app/models/classification-definition.ts

@@ -1,29 +1,29 @@
 import { LinksClassification } from 'app/models/links-classfication';
 
 export class ClassificationDefinition {
-  constructor(public classificationId: string = undefined,
+  constructor(public classificationId?: string,
-    public key: string = undefined,
+    public key?: string,
-    public parentId: string = undefined,
+    public parentId?: string,
-    public parentKey: string = undefined,
+    public parentKey?: string,
-    public category: string = undefined,
+    public category?: string,
-    public domain: string = undefined,
+    public domain?: string,
-    public type: string = undefined,
+    public type?: string,
-    public isValidInDomain: boolean = undefined,
+    public isValidInDomain?: boolean,
-    public created: string = undefined,
+    public created?: string,
-    public modified: string = undefined,
+    public modified?: string,
-    public name: string = undefined,
+    public name?: string,
-    public description: string = undefined,
+    public description?: string,
-    public priority: number = undefined,
+    public priority?: number,
-    public serviceLevel: string = undefined,
+    public serviceLevel?: string,
-    public applicationEntryPoint: string = undefined,
+    public applicationEntryPoint?: string,
-    public custom1: string = undefined,
+    public custom1?: string,
-    public custom2: string = undefined,
+    public custom2?: string,
-    public custom3: string = undefined,
+    public custom3?: string,
-    public custom4: string = undefined,
+    public custom4?: string,
-    public custom5: string = undefined,
+    public custom5?: string,
-    public custom6: string = undefined,
+    public custom6?: string,
-    public custom7: string = undefined,
+    public custom7?: string,
-    public custom8: string = undefined,
+    public custom8?: string,
-    public _links: LinksClassification = new LinksClassification()) {
+    public _links?: LinksClassification) {
   }
 }

web/src/app/models/classification-resource.ts

@@ -4,7 +4,7 @@ import { Links } from './links';
 export class ClassificationResource {
   constructor(
     public classifications: Array<Classification> = [],
-    public _links: Links = new Links(),
+    public _links?: Links
   ) {
   }
 }

web/src/app/models/classification.ts

@@ -1,15 +1,15 @@
 import {Links} from 'app/models/links';
 
 export class Classification {
-  constructor(public classificationId: string = undefined, // newly created classifications don't have an id yet.
+  constructor(public classificationId?: string, // newly created classifications don't have an id yet.
-              public key: string = undefined,
+              public key?: string,
-              public category: string = undefined,
+              public category?: string,
-              public type: string = undefined,
+              public type?: string,
-              public domain: string = undefined,
+              public domain?: string,
-              public name: string = undefined,
+              public name?: string,
-              public parentId: string = undefined,
+              public parentId?: string,
-              public priority: number = undefined,
+              public priority?: number,
-              public serviceLevel: string = undefined,
+              public serviceLevel?: string,
-              public _links: Links = new Links()) {
+              public _links?: Links ) {
   }
 }

web/src/app/models/links-classfication.ts

@@ -2,11 +2,11 @@ import { Links } from './links';
 
 export class LinksClassification extends Links {
     constructor(
-        self = undefined,
+        self?,
-        distributionTargets = undefined,
+        distributionTargets?,
-        accessItems = undefined,
+        accessItems?,
-        public getAllClassifications: { 'href': string } = undefined,
+        public getAllClassifications?: { 'href': string },
-        public createClassification: { 'href': string } = undefined,
+        public createClassification?: { 'href': string },
-        public updateClassification: { 'href': string } = undefined,
+        public updateClassification?: { 'href': string },
     ) { super(self, distributionTargets, accessItems) }
 }

web/src/app/models/links-workbasket-summary.ts

@@ -2,9 +2,9 @@ import { Links } from './links';
 
 export class LinksWorkbasketSummary extends Links {
     constructor(
-        self = undefined,
+        self?,
-        distributionTargets = undefined,
+        distributionTargets?,
-        accessItems = undefined,
+        accessItems?,
-        public allWorkbaskets: { 'href': string } = undefined
+        public allWorkbaskets?: { 'href': string }
     ) { super(self, distributionTargets, accessItems) }
 }

web/src/app/models/links.ts

@@ -1,9 +1,9 @@
 export class Links {
     constructor(
-        public self: { 'href': string } = undefined,
+        public self?: { 'href': string },
-        public distributionTargets: { 'href': string } = undefined,
+        public distributionTargets?: { 'href': string },
-        public accessItems: { 'href': string } = undefined,
+        public accessItems?: { 'href': string },
-        public allWorkbasketUrl: { 'href': string } = undefined,
+        public allWorkbasketUrl?: { 'href': string },
-        public removeDistributionTargets: {'href': string} = undefined
+        public removeDistributionTargets?: {'href': string}
     ) { }
 }

web/src/app/models/message-modal.ts

@@ -1,7 +1,7 @@
 export class MessageModal {
     constructor(
-        public title: string = undefined,
+        public title?: string,
-        public message: any = undefined,
+        public message?: any,
         public type = 'error'
     ) { }
 }

web/src/app/models/page.ts

@@ -1,8 +1,8 @@
 export class Page {
     constructor(
-        public size: number = undefined,
+        public size?: number,
-        public totalElements: number = undefined,
+        public totalElements?: number,
-        public totalPages: number = undefined,
+        public totalPages?: number,
-        public number: number = undefined
+        public number?: number
     ) { }
 }

web/src/app/models/pair.ts

@@ -1,6 +1,6 @@
 export class Pair {
     constructor(
-        public name: string = undefined,
+        public name?: string,
-        public text: string = undefined,
+        public text?: string,
     ) { }
 }

web/src/app/models/task-history-event-resource.ts

@@ -3,5 +3,5 @@ import { TaskHistoryEventData } from './task-history-event';
 
 export class TaskHistoryEventResourceData {
     public taskHistoryEvents: Array<TaskHistoryEventData>
-    public _links: Links = undefined
+    public _links: Links = new Links()
 }

web/src/app/models/tree-node.ts

@@ -1,16 +1,16 @@
 import { Classification } from 'app/models/classification';
 
 export class TreeNodeModel extends Classification {
-  constructor(public id: string = '',
+  constructor(public id?: string,
-    public key: string = '',
+    public key?: string,
-    public category: string = '',
+    public category?: string,
-    public type: string = '',
+    public type?: string,
-    public domain: string = '',
+    public domain?: string,
-    public name: string = '',
+    public name?: string,
-    public parentId: string = '',
+    public parentId?: string,
-    public priority: number = 0,
+    public priority?: number,
-    public serviceLevel: string = '',
+    public serviceLevel?: string,
-    public children: Array<TreeNodeModel> = undefined) {
+    public children: Array<TreeNodeModel> = []) {
     super(id, key, category, type, domain, name, parentId, priority, serviceLevel);
   }
 }

web/src/app/models/user-info.ts

@@ -1,7 +1,7 @@
 
 export class UserInfoModel {
     constructor(
-        public userId: string = undefined,
+        public userId: string = '',
         public groupIds: Array<string> = [],
         public roles: Array<string> = []) { };
 

web/src/app/models/version.ts

@@ -1,6 +1,6 @@
 
 export class VersionModel {
     constructor(
-        public version: string = undefined
+        public version: string = ''
     ) { };
 }

web/src/app/models/workbasket-access-items-resource.ts

@@ -4,6 +4,6 @@ import { WorkbasketAccessItems } from './workbasket-access-items';
 export class WorkbasketAccessItemsResource {
     constructor(
         public accessItems: Array<WorkbasketAccessItems> = [],
-        public _links: Links = undefined
+        public _links: Links = new Links()
     ) { }
 }

web/src/app/models/workbasket-access-items.ts

@@ -23,6 +23,6 @@ export class WorkbasketAccessItems {
         public permCustom10: boolean = false,
         public permCustom11: boolean = false,
         public permCustom12: boolean = false,
-        public _links: Links = undefined
+        public _links: Links = new Links()
     ) { }
 }

web/src/app/models/workbasket-resource.ts

@@ -4,5 +4,5 @@ import { Workbasket } from './workbasket';
 export class WorkbasketResource {
     constructor(
         public workbaskets: Array<Workbasket> = [],
-        public _links: Links = undefined) { }
+        public _links: Links = new Links() ) { }
 }

web/src/app/models/workbasket-summary.ts

@@ -4,20 +4,20 @@ import { Links } from './links';
 
 export class WorkbasketSummary {
     constructor(
-        public workbasketId: string = undefined,
+        public workbasketId?: string,
-        public key: string = undefined,
+        public key?: string,
-        public name: string = undefined,
+        public name?: string,
-        public description: string = undefined,
+        public description?: string,
-        public owner: string = undefined,
+        public owner?: string,
-        public modified: string = undefined,
+        public modified?: string,
-        public domain: string = undefined,
+        public domain?: string,
         public type: string = ICONTYPES.PERSONAL,
-        public orgLevel1: string = undefined,
+        public orgLevel1?: string,
-        public orgLevel2: string = undefined,
+        public orgLevel2?: string,
-        public orgLevel3: string = undefined,
+        public orgLevel3?: string,
-        public orgLevel4: string = undefined,
+        public orgLevel4?: string,
         public markedForDeletion: boolean = false,
-        public _links: Links = undefined,
+        public _links?: Links,
-        public page: Page = undefined) {
+        public page?: Page ) {
     }
 }

web/src/app/models/workbasket.ts

@@ -25,23 +25,23 @@ export class Workbasket {
     }
 
     constructor(
-        public workbasketId: string,
+        public workbasketId?: string,
-        public created: string = undefined,
+        public created?: string,
-        public key: string = undefined,
+        public key?: string,
-        public domain: string = undefined,
+        public domain?: string,
         public type: ICONTYPES = ICONTYPES.PERSONAL,
-        public modified: string = undefined,
+        public modified?: string,
-        public name: string = undefined,
+        public name?: string,
-        public description: string = undefined,
+        public description?: string,
-        public owner: string = undefined,
+        public owner?: string,
-        public custom1: string = undefined,
+        public custom1?: string,
-        public custom2: string = undefined,
+        public custom2?: string,
-        public custom3: string = undefined,
+        public custom3?: string,
-        public custom4: string = undefined,
+        public custom4?: string,
-        public orgLevel1: string = undefined,
+        public orgLevel1?: string,
-        public orgLevel2: string = undefined,
+        public orgLevel2?: string,
-        public orgLevel3: string = undefined,
+        public orgLevel3?: string,
-        public orgLevel4: string = undefined,
+        public orgLevel4?: string,
         public _links: Links = new Links()) {
     }
 }

web/src/app/services/custom-fields/custom-fields.service.spec.ts

@@ -15,7 +15,7 @@ describe('CustomFieldsService', () => {
 
   it('should take default icon path', inject([CustomFieldsService], (service: CustomFieldsService) => {
     const categoriesData = {'DEFAULT': 'assets/icons/categories/default.svg'}
-    const returnedValue = service.getCustomObject(categoriesData, undefined);
+    const returnedValue = service.getCustomObject(categoriesData);
     expect(returnedValue).toBe(categoriesData);
     expect(service).toBeTruthy();
     }));

web/src/app/services/custom-fields/custom-fields.service.ts

@@ -10,14 +10,14 @@ export class CustomFieldsService {
     this.customizedFields = jsonFile[language];
   }
 
-  getCustomField(fallbacktext: string, customPath: string = undefined): CustomField {
+  getCustomField(fallbacktext: string, customPath?: string): CustomField {
     if (!customPath) {
       return new CustomField(true, fallbacktext)
     }
     return this.jsonPath(customPath, fallbacktext);
   }
 
-  getCustomObject(fallbackObject: Object, customPath: string = undefined): Object {
+  getCustomObject(fallbackObject: Object, customPath?: string): Object {
     if (!customPath) {
       return fallbackObject;
     }

web/src/app/services/domain/domain.service.ts

@@ -46,7 +46,7 @@ export class DomainService {
           this.domainRestValue = domains;
           this.domainValue = domains;
           this.dataObs$.next(this.hasMasterDomain ? this.addEmptyDomain(domains) : domains);
-          if (this.domainSelectedValue === undefined && this.domainValue.length > 0) {
+          if (!this.domainSelectedValue && this.domainValue.length > 0) {
             this.selectDomain(this.domainValue[0]);
           }
         },

web/src/app/services/orientation/orientation.service.ts

@@ -7,7 +7,7 @@ import { TaskanaQueryParameters } from 'app/shared/util/query-parameters';
 export class OrientationService {
 
   private lock = false;
-  private currentOrientation = undefined;
+  private currentOrientation;
   public orientation = new BehaviorSubject<Orientation>(this.currentOrientation);
 
   constructor() { }

web/src/app/services/selected-route/selected-route.ts

@@ -21,7 +21,7 @@ export class SelectedRouteService {
     }
 
     private getRoute(event): string {
-        if (event === undefined) {
+        if (!event) {
             return this.checkUrl(this.router.url);
         }
         return this.checkUrl(event.url)

web/src/app/services/titles/titles.service.ts

@@ -11,7 +11,7 @@ export class TitlesService {
     this.titles = jsonFile[language];
   }
 
-  getTitle(id: number, fallBacktext: string, customPath: string = undefined) {
+  getTitle(id: number, fallBacktext: string, customPath?: string) {
 
     return this.titles[id] ? this.titles[id] : fallBacktext
   }

web/src/app/shared/alert/alert.component.ts

@@ -26,7 +26,7 @@ export class AlertComponent implements OnInit {
 
   setTimeOutForClosing(time: number) {
     setTimeout(() => {
-      this.alert = undefined;
+      delete this.alert;
     }, time);
   }
 }

web/src/app/shared/classification-types-selector/classification-types-selector.component.ts

@@ -7,9 +7,10 @@ import { Component, OnInit, Input, Output, EventEmitter } from '@angular/core';
 })
 export class ClassificationTypesSelectorComponent implements OnInit {
 
-  @Input() classificationTypes: Array<string> = [];
   @Input()
-  classificationTypeSelected: string = undefined;
+  classificationTypes: Array<string> = [];
+  @Input()
+  classificationTypeSelected: string;
   @Output()
   classificationTypeSelectedChange = new EventEmitter<string>();
   @Output()

web/src/app/shared/master-and-detail/master-and-detail.component.ts

@@ -35,7 +35,7 @@ export class MasterAndDetailComponent implements OnInit {
     }
 
     private showDetails(event?: RouterEvent): boolean {
-        if (event === undefined) {
+        if (!event) {
             return this.checkUrl(this.router.url);
         }
         return this.checkUrl(event.url)

web/src/app/shared/services/access-ids/access-ids.service.ts

@@ -31,8 +31,8 @@ export class AccessIdsService {
 
   getAccessItemsPermissions(
     accessIds: Array<AccessIdDefinition>,
-    accessIdLike: string = undefined,
+    accessIdLike?: string,
-    workbasketKeyLike: string = undefined,
+    workbasketKeyLike?: string,
     sortModel: SortingModel = new SortingModel('workbasket-key'),
     forceRequest: boolean = false): Observable<AccessItemsWorkbasketResource> {
 
@@ -55,8 +55,8 @@ export class AccessIdsService {
   private accessIdsParameters(
     sortModel: SortingModel,
     accessIds: Array<AccessIdDefinition>,
-    accessIdLike: string = undefined,
+    accessIdLike?: string,
-    workbasketKeyLike: string = undefined): QueryParametersModel {
+    workbasketKeyLike?: string ): QueryParametersModel {
 
     const parameters = new QueryParametersModel();
     parameters.SORTBY = sortModel.sortBy;
@@ -66,8 +66,8 @@ export class AccessIdsService {
     }).join('|');
     parameters.ACCESSIDLIKE = accessIdLike;
     parameters.WORKBASKETKEYLIKE = workbasketKeyLike;
-    TaskanaQueryParameters.page = undefined;
+    delete TaskanaQueryParameters.page;
-    TaskanaQueryParameters.pageSize = undefined;
+    delete TaskanaQueryParameters.pageSize;
     return parameters;
   }
 }

web/src/app/shared/services/classifications/classifications.service.ts

@@ -79,7 +79,7 @@ export class ClassificationsService {
   }
 
   // #region "Service extras"
-  selectClassification(classification: ClassificationDefinition) {
+  selectClassification(classification?: ClassificationDefinition) {
     this.classificationSelected.next(classification);
   }
 
@@ -103,8 +103,8 @@ export class ClassificationsService {
     parameters.SORTBY = TaskanaQueryParameters.parameters.KEY;
     parameters.SORTDIRECTION = Direction.ASC;
     parameters.DOMAIN = domain;
-    TaskanaQueryParameters.page = undefined;
+    delete TaskanaQueryParameters.page;
-    TaskanaQueryParameters.pageSize = undefined;
+    delete TaskanaQueryParameters.pageSize;
 
     return parameters;
   }

web/src/app/shared/services/workbasket/workbasket.service.ts

@@ -33,15 +33,15 @@ export class WorkbasketService {
     getWorkBasketsSummary(forceRequest: boolean = false,
         sortBy: string = TaskanaQueryParameters.parameters.KEY,
         order: string = Direction.ASC,
-        name: string = undefined,
+        name?: string,
-        nameLike: string = undefined,
+        nameLike?: string,
-        descLike: string = undefined,
+        descLike?: string,
-        owner: string = undefined,
+        owner?: string,
-        ownerLike: string = undefined,
+        ownerLike?: string,
-        type: string = undefined,
+        type?: string,
-        key: string = undefined,
+        key?: string,
-        keyLike: string = undefined,
+        keyLike?: string,
-        requiredPermission: string = undefined,
+        requiredPermission?: string,
         allPages: boolean = false) {
 
         if (this.workbasketSummaryRef && !forceRequest) {
@@ -121,7 +121,7 @@ export class WorkbasketService {
 
     // #endregion
     // #region "Service extras"
-    selectWorkBasket(id: string) {
+    selectWorkBasket(id?: string) {
         this.workBasketSelected.next(id);
     }
 
@@ -158,17 +158,17 @@ export class WorkbasketService {
     private workbasketParameters(
         sortBy: string = TaskanaQueryParameters.parameters.KEY,
         order: string = Direction.ASC,
-        name: string = undefined,
+        name?: string,
-        nameLike: string = undefined,
+        nameLike?: string,
-        descLike: string = undefined,
+        descLike?: string,
-        owner: string = undefined,
+        owner?: string,
-        ownerLike: string = undefined,
+        ownerLike?: string,
-        type: string = undefined,
+        type?: string,
-        key: string = undefined,
+        key?: string,
-        keyLike: string = undefined,
+        keyLike?: string,
-        requiredPermission: string = undefined,
+        requiredPermission?: string,
-        allPages: boolean = false,
+        allPages?: boolean,
-        domain: string = ''): QueryParametersModel {
+        domain?: string): QueryParametersModel {
 
         const parameters = new QueryParametersModel();
         parameters.SORTBY = sortBy;
@@ -184,8 +184,8 @@ export class WorkbasketService {
         parameters.REQUIREDPERMISSION = requiredPermission;
         parameters.DOMAIN = domain;
         if (allPages) {
-            TaskanaQueryParameters.page = undefined;
+          delete TaskanaQueryParameters.page;
-            TaskanaQueryParameters.pageSize = undefined;
+          delete TaskanaQueryParameters.pageSize;
         }
         return parameters;
     }

web/src/app/shared/spinner/spinner.component.ts

@@ -45,7 +45,7 @@ export class SpinnerComponent implements OnDestroy {
     isModal = false;
 
     @Input()
-    positionClass: string = undefined;
+    positionClass: string;
 
     @Output()
     spinnerIsRunning = new EventEmitter<boolean>();
@@ -81,8 +81,8 @@ export class SpinnerComponent implements OnDestroy {
     private cancelTimeout(): void {
         clearTimeout(this.currentTimeout);
         clearTimeout(this.requestTimeout);
-        this.currentTimeout = undefined;
+        delete this.currentTimeout; // do we need this?
-        this.requestTimeout = undefined;
+        delete this.requestTimeout;
     }
 
     ngOnDestroy(): any {

web/src/app/shared/tree/tree.component.ts

@@ -106,7 +106,7 @@ export class TaskanaTreeComponent implements OnInit, AfterViewChecked, OnDestroy
   }
 
   onDeactivate(treeNode: any) {
-    this.selectNodeIdChanged.emit(undefined);
+    this.selectNodeIdChanged.emit();
   }
 
   async onMoveNode($event) {
@@ -145,7 +145,7 @@ export class TaskanaTreeComponent implements OnInit, AfterViewChecked, OnDestroy
 
   private unSelectActiveNode() {
     const activeNode = this.tree.treeModel.getActiveNode();
-    this.selectNodeId = undefined;
+    delete this.selectNodeId;
     activeNode.setIsActive(false);
     activeNode.blur();
   }

web/src/app/shared/type-ahead/type-ahead.component.ts

@@ -56,7 +56,7 @@ export class TypeAheadComponent implements OnInit, ControlValueAccessor {
   typeaheadOptionsInScrollableView = 6;
 
   // The internal data model
-  private innerValue: any = undefined;
+  private innerValue: any;
 
   // Placeholders for the callbacks which are later provided
   // by the Control Value Accessor

web/src/app/shared/util/query-parameters.spec.ts

@@ -10,8 +10,8 @@ describe('TaskanaQueryParameters', () => {
     })
 
     it('should create a empty query', () => {
-        TaskanaQueryParameters.page = undefined;
+        delete TaskanaQueryParameters.page;
-        TaskanaQueryParameters.pageSize = undefined;
+        delete TaskanaQueryParameters.pageSize;
         expect(TaskanaQueryParameters.getQueryParameters(new QueryParametersModel())).toBe('?');
         TaskanaQueryParameters.page = 1;
         TaskanaQueryParameters.pageSize = 9;

web/src/app/workplace/models/object-reference.ts

@@ -1,9 +1,9 @@
 export class ObjectReference {
-  constructor(public id: string = undefined,
+  constructor(public id?: string,
-              public company: string = undefined,
+              public company?: string,
-              public system: string = undefined,
+              public system?: string,
-              public systemInstance: string = undefined,
+              public systemInstance?: string,
-              public type: string = undefined,
+              public type?: string,
-              public value: string = undefined) {
+              public value?: string) {
   }
 }

web/src/app/workplace/models/task-resource.ts

@@ -4,6 +4,6 @@ import { Page } from 'app/models/page';
 
 export class TaskResource {
   constructor(public tasks: Array<Task>,
-              public _links: Links = undefined,
+              public _links?: Links,
               public page: Page = new Page()) {}
 }

web/src/app/workplace/models/task.ts

@@ -4,44 +4,44 @@ import {ObjectReference} from './object-reference';
 
 export class Task {
   constructor(public taskId: string,
-              public primaryObjRef: ObjectReference = undefined,
+              public primaryObjRef: ObjectReference = new ObjectReference(),
-              public workbasketSummaryResource: Workbasket = undefined,
+              public workbasketSummaryResource?: Workbasket,
-              public classificationSummaryResource: Classification = undefined,
+              public classificationSummaryResource?: Classification,
-              public businessProcessId: string = undefined,
+              public businessProcessId?: string,
-              public parentBusinessProcessId: string = undefined,
+              public parentBusinessProcessId?: string,
-              public owner: string = undefined,
+              public owner?: string,
-              public created: string = undefined,    // ISO-8601
+              public created?: string,    // ISO-8601
-              public claimed: string = undefined,    // ISO-8601
+              public claimed?: string,    // ISO-8601
-              public completed: string = undefined,  // ISO-8601
+              public completed?: string,  // ISO-8601
-              public modified: string = undefined,   // ISO-8601
+              public modified?: string,   // ISO-8601
-              public planned: string = undefined,    // ISO-8601
+              public planned?: string,    // ISO-8601
-              public due: string = undefined,        // ISO-8601
+              public due?: string,        // ISO-8601
-              public name: string = undefined,
+              public name?: string,
-              public creator: string = undefined,
+              public creator?: string,
-              public description: string = undefined,
+              public description?: string,
-              public note: string = undefined,
+              public note?: string,
-              public state: any = undefined,
+              public state?: any,
-              public read: boolean = undefined,
+              public read?: boolean,
-              public transferred: boolean = undefined,
+              public transferred?: boolean,
-              public priority: number = undefined,
+              public priority?: number,
               public customAttributes: Array<CustomAttribute> = [],
               public callbackInfo: Array<CustomAttribute> = [],
-              public custom1: string = undefined,
+              public custom1?: string,
-              public custom2: string = undefined,
+              public custom2?: string,
-              public custom3: string = undefined,
+              public custom3?: string,
-              public custom4: string = undefined,
+              public custom4?: string,
-              public custom5: string = undefined,
+              public custom5?: string,
-              public custom6: string = undefined,
+              public custom6?: string,
-              public custom7: string = undefined,
+              public custom7?: string,
-              public custom8: string = undefined,
+              public custom8?: string,
-              public custom9: string = undefined,
+              public custom9?: string,
-              public custom10: string = undefined,
+              public custom10?: string,
-              public custom11: string = undefined,
+              public custom11?: string,
-              public custom12: string = undefined,
+              public custom12?: string,
-              public custom13: string = undefined,
+              public custom13?: string,
-              public custom14: string = undefined,
+              public custom14?: string,
-              public custom15: string = undefined,
+              public custom15?: string,
-              public custom16: string = undefined) {
+              public custom16?: string) {
   }
 }
 

web/src/app/workplace/services/task.service.ts

@@ -23,11 +23,11 @@ export class TaskService {
   constructor(private httpClient: HttpClient) {
   }
 
-  publishUpdatedTask(task: Task = undefined) {
+  publishUpdatedTask(task: Task = new Task('empty')) {
     this.taskChangedSource.next(task);
   }
 
-  selectTask(task: Task) {
+  selectTask(task?: Task) {
     this.taskSelectedSource.next(task);
   }
 
@@ -121,8 +121,8 @@ export class TaskService {
     parameters.TASK_PRIMARY_OBJ_REF_TYPE_LIKE = objRefTypeLike;
     parameters.TASK_PRIMARY_OBJ_REF_VALUE_LIKE = objRefValueLike;
     if (allPages) {
-      TaskanaQueryParameters.page = undefined;
+      delete TaskanaQueryParameters.page;
-      TaskanaQueryParameters.pageSize = undefined;
+      delete TaskanaQueryParameters.pageSize;
     }
 
     return parameters;

web/src/app/workplace/services/workplace.service.ts

@@ -13,7 +13,7 @@ export class WorkplaceService {
   private objectReferenceSource = new Subject<ObjectReference>();
   objectReferenceSelectedStream = this.objectReferenceSource.asObservable();
 
-  selectWorkbasket(workbasket: Workbasket) {
+  selectWorkbasket(workbasket?: Workbasket) {
     this.currentWorkbasket = workbasket;
     this.workbasketSelectedSource.next(workbasket);
   }
@@ -22,11 +22,11 @@ export class WorkplaceService {
     return this.workbasketSelectedStream;
   }
 
-  selectObjectReference(objectReference: ObjectReference) {
+  selectObjectReference(objectReference?: ObjectReference) {
+    this.objectReference = new ObjectReference();
     if (objectReference) {
-      this.objectReference = new ObjectReference(undefined, undefined, undefined, undefined, objectReference.type, objectReference.value);
+      this.objectReference.type = objectReference.type;
-    } else {
+      this.objectReference.value = objectReference.value;
-      this.objectReference = new ObjectReference(undefined);
     }
     this.objectReferenceSource.next(objectReference);
   }

web/src/app/workplace/taskdetails/general/general-fields.component.ts

@@ -27,7 +27,7 @@ export class TaskdetailsGeneralFieldsComponent implements OnInit, OnChanges {
 
     toogleValidationMap = new Map<string, boolean>();
     requestInProgress = false;
-    classifications: Classification[] = undefined;
+    classifications: Classification[];
 
     ownerField = this.customFieldsService.getCustomField(
         'Owner',

web/src/app/workplace/taskdetails/taskdetails.component.ts

@@ -23,12 +23,12 @@ import {MasterAndDetailService} from 'app/services/masterAndDetail/master-and-de
   styleUrls: ['./taskdetails.component.scss']
 })
 export class TaskdetailsComponent implements OnInit, OnDestroy {
-  task: Task = undefined;
+  task: Task;
-  taskClone: Task = undefined;
+  taskClone: Task;
   requestInProgress = false;
   tabSelected = 'general';
-  currentWorkbasket: Workbasket = undefined;
+  currentWorkbasket: Workbasket;
-  currentId: string = undefined;
+  currentId: string;
   showDetail = false;
 
   private routeSubscription: Subscription;
@@ -77,7 +77,7 @@ export class TaskdetailsComponent implements OnInit, OnDestroy {
     this.requestInProgress = true;
     if (this.currentId === 'new-task') {
       this.requestInProgress = false;
-      this.task = new Task(undefined, new ObjectReference(), this.currentWorkbasket);
+      this.task = new Task('', new ObjectReference(), this.currentWorkbasket);
     } else {
       this.taskService.getTask(this.currentId).subscribe(task => {
         this.requestInProgress = false;
@@ -124,7 +124,7 @@ export class TaskdetailsComponent implements OnInit, OnDestroy {
   }
 
   backClicked(): void {
-    this.task = undefined;
+    delete this.task;
     this.taskService.selectTask(this.task);
     this.router.navigate(['./'], {relativeTo: this.route.parent});
   }

web/src/app/workplace/taskmaster/task-list-toolbar/task-list-toolbar.component.ts

@@ -83,11 +83,13 @@ export class TaskListToolbarComponent implements OnInit {
     this.toolbarState = false;
     this.workbasketSelected = true;
     if (this.searchSelected === this.search.byTypeAndValue) {
-      this.workplaceService.selectObjectReference(
+      const objectReference = new ObjectReference();
-        new ObjectReference(undefined, undefined, undefined, undefined, this.resultType, this.resultValue));
+      objectReference.type = this.resultType;
-        this.searched = true;
+      objectReference.value = this.resultValue;
+      this.workplaceService.selectObjectReference(objectReference);
+      this.searched = true;
     } else {
-      this.workplaceService.selectObjectReference(undefined);
+      this.workplaceService.selectObjectReference();
       if (this.workbaskets) {
         this.workbaskets.forEach(workbasket => {
           if (workbasket.name === this.resultName) {
@@ -99,8 +101,8 @@ export class TaskListToolbarComponent implements OnInit {
         });
 
         if (!this.resultId) {
-          this.currentBasket = undefined;
+          delete this.currentBasket;
-          this.workplaceService.selectWorkbasket(undefined);
+          this.workplaceService.selectWorkbasket();
         }
       }
     }
@@ -118,14 +120,14 @@ export class TaskListToolbarComponent implements OnInit {
   }
 
   createTask() {
-    this.taskService.selectTask(undefined);
+    this.taskService.selectTask();
     this.router.navigate([{ outlets: { detail: 'taskdetail/new-task' } }], { relativeTo: this.route });
   }
 
   selectSearch(type: Search) {
     this.searched = false;
-    this.resultId = undefined;
+    delete this.resultId;
-    this.currentBasket = undefined;
+    delete this.currentBasket;
     this.selectSearchType.emit(type);
     this.searchSelected = type;
 

web/src/app/workplace/taskmaster/task-list/task-list.component.ts

@@ -30,7 +30,7 @@ export class TaskListComponent implements OnInit {
   }
 
   selectTask(taskId: string) {
-    this.workplaceService.selectObjectReference(undefined);
+    this.workplaceService.selectObjectReference();
     this.selectedId = taskId;
     this.selectedIdChange.emit(taskId);
     this.router.navigate([{outlets: {detail: `taskdetail/${this.selectedId}`}}], {relativeTo: this.route});

web/src/app/workplace/taskmaster/task-master.component.ts

@@ -56,7 +56,7 @@ export class TaskMasterComponent implements OnInit, OnDestroy {
     private orientationService: OrientationService) {
     this.taskChangeSubscription = this.taskService.taskChangedStream.subscribe(task => {
       this.getTasks();
-      this.selectedId = task ? task.taskId : undefined;
+      this.selectedId = task ? task.taskId : '';
     });
 
     this.workbasketChangeSubscription = this.workplaceService.workbasketSelectedStream.subscribe(workbasket => {
@@ -68,7 +68,7 @@ export class TaskMasterComponent implements OnInit, OnDestroy {
 
     this.objectReferenceSubscription = this.workplaceService.objectReferenceSelectedStream.subscribe(objectReference => {
       this.objectReference = objectReference;
-      this.currentBasket = undefined;
+      delete this.currentBasket;
       if (objectReference) {
         this.getTasks();
       }
@@ -83,7 +83,7 @@ export class TaskMasterComponent implements OnInit, OnDestroy {
           this.currentBasket = task.workbasketSummaryResource;
         }
         if (!task) {
-          this.selectedId = undefined;
+          this.selectedId = '';
         }
       });
     this.orientationSubscription = this.orientationService.getOrientation().subscribe((orientation: Orientation) => {
@@ -131,15 +131,15 @@ export class TaskMasterComponent implements OnInit, OnDestroy {
 
   private getTasks(): void {
     this.requestInProgress = true;
-    if (this.currentBasket === undefined && !this.objectReference) {
+    if (!this.currentBasket && !this.objectReference) {
       this.requestInProgress = false;
       this.tasks = [];
     } else {
       this.calculateHeightCard();
-      this.taskService.findTasksWithWorkbasket(this.currentBasket ? this.currentBasket.workbasketId : undefined,
+      this.taskService.findTasksWithWorkbasket(this.currentBasket ? this.currentBasket.workbasketId : '',
         this.sort.sortBy, this.sort.sortDirection, this.filterBy.filterParams.name, this.filterBy.filterParams.owner,
-        this.filterBy.filterParams.priority, this.filterBy.filterParams.state, this.objectReference ? this.objectReference.type : undefined,
+        this.filterBy.filterParams.priority, this.filterBy.filterParams.state, this.objectReference ? this.objectReference.type : '',
-        this.objectReference ? this.objectReference.value : undefined)
+        this.objectReference ? this.objectReference.value : '')
         .subscribe(tasks => {
           this.requestInProgress = false;
           if (tasks.tasks) {