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changed and deleted observable for the datastore. Removed ModelId

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This commit is contained in:
FinnStutzenstein 2018-09-07 12:51:16 +02:00
parent befbaba525
commit e53a75f922
9 changed files with 55 additions and 39 deletions
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2
client/src/app/core/services/config.service.ts
View File

@ -34,7 +34,7 @@ export class ConfigService extends OpenSlidesComponent {
public constructor() {
super();
this.DS.getObservable().subscribe(data => {
this.DS.changeObservable.subscribe(data => {
// on changes notify the observers for specific keys.
if (data instanceof Config && this.configSubjects[data.key]) {
this.configSubjects[data.key].next(data.value);

73
client/src/app/core/services/data-store.service.ts
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@ -1,10 +1,20 @@
import { Injectable } from '@angular/core';
import { Observable, BehaviorSubject } from 'rxjs';
import { Observable, Subject } from 'rxjs';
import { BaseModel, ModelId, ModelConstructor } from 'app/shared/models/base.model';
import { BaseModel, ModelConstructor } from 'app/shared/models/base.model';
import { CacheService } from './cache.service';
import { CollectionStringModelMapperService } from './collectionStringModelMapper.service';
/**
* Represents information about a deleted model.
*
* As the model doesn't exist anymore, just the former id and collection is known.
*/
export interface DeletedInformation {
collection: string;
id: number;
}
/**
* represents a collection on the Django server, uses an ID to access a {@link BaseModel}.
*
@ -62,9 +72,32 @@ export class DataStoreService {
private JsonStore: JsonStorage = {};
/**
* Observable subject with changes to enable dynamic changes in models and views
* Observable subject for changed models in the datastore.
*/
private dataStoreSubject: BehaviorSubject<any> = new BehaviorSubject<any>(null);
private changedSubject: Subject<BaseModel> = new Subject<BaseModel>();
/**
* Observe the datastore for changes.
*
* @return an observable for changed models
*/
public get changeObservable(): Observable<BaseModel> {
return this.changedSubject.asObservable();
}
/**
* Observable subject for changed models in the datastore.
*/
private deletedSubject: Subject<DeletedInformation> = new Subject<DeletedInformation>();
/**
* Observe the datastore for deletions.
*
* @return an observable for deleted objects.
*/
public get deletedObservable(): Observable<DeletedInformation> {
return this.deletedSubject.asObservable();
}
/**
* The maximal change id from this DataStore.
@ -166,14 +199,14 @@ export class DataStoreService {
* @example: this.DS.get(User, 1)
* @example: this.DS.get('core/countdown', 2)
*/
public get<T extends BaseModel>(collectionType: ModelConstructor | string, id: ModelId): T {
public get<T extends BaseModel>(collectionType: ModelConstructor | string, id: number): T {
const collectionString = this.getCollectionString(collectionType);
const collection: ModelCollection = this.modelStore[collectionString];
if (!collection) {
return;
} else {
return collection[id];
return collection[id] as T;
}
}
@ -184,7 +217,7 @@ export class DataStoreService {
* @return The BaseModel-list corresponding to the given ID(s)
* @example: this.DS.get(User, [1,2,3,4,5])
*/
public getMany<T extends BaseModel>(collectionType: ModelConstructor | string, ids: ModelId[]): T[] {
public getMany<T extends BaseModel>(collectionType: ModelConstructor | string, ids: number[]): T[] {
const collectionString = this.getCollectionString(collectionType);
const collection: ModelCollection = this.modelStore[collectionString];
@ -196,7 +229,7 @@ export class DataStoreService {
return collection[id];
})
.filter(model => !!model); // remove non valid models.
return models;
return models as T[];
}
/**
@ -257,7 +290,7 @@ export class DataStoreService {
}
this.JsonStore[collectionString][model.id] = JSON.stringify(model);
// if (model.changeId > maxChangeId) {maxChangeId = model.maxChangeId;}
this.setObservable(model);
this.changedSubject.next(model);
});
this.storeToCache(maxChangeId);
}
@ -268,7 +301,7 @@ export class DataStoreService {
* @param ...ids An or multiple IDs or a list of IDs of BaseModels. use spread operator ("...") for arrays
* @example this.DS.remove(User, myUser.id, 3, 4)
*/
public remove(collectionType, ...ids: ModelId[]): void {
public remove(collectionType, ...ids: number[]): void {
let collectionString: string;
if (typeof collectionType === 'string') {
collectionString = collectionType;
@ -287,6 +320,10 @@ export class DataStoreService {
if (this.JsonStore[collectionString]) {
delete this.JsonStore[collectionString][id];
}
this.deletedSubject.next({
collection: collectionString,
id: id
});
});
this.storeToCache(maxChangeId);
}
@ -303,22 +340,6 @@ export class DataStoreService {
}
}
/**
* Observe the dataStore for changes.
* @return an observable behaviorSubject
*/
public getObservable(): Observable<any> {
return this.dataStoreSubject.asObservable();
}
/**
* Informs the observers for changes
* @param value the change that have been made
*/
private setObservable(value): void {
this.dataStoreSubject.next(value);
}
/**
* Prints the whole dataStore
* @deprecated Shouldn't be used, will be removed later

2
client/src/app/core/services/operator.service.ts
View File

@ -83,7 +83,7 @@ export class OperatorService extends OpenSlidesComponent {
* permissions if the user or groups changes.
*/
public setupSubscription() {
this.DS.getObservable().subscribe(newModel => {
this.DS.changeObservable.subscribe(newModel => {
if (this._user) {
if (newModel instanceof Group) {
this.updatePermissions();

7
client/src/app/shared/models/base.model.ts
View File

@ -2,11 +2,6 @@ import { OpenSlidesComponent } from 'app/openslides.component';
import { Deserializable } from './deserializable.model';
import { CollectionStringModelMapperService } from '../../core/services/collectionStringModelMapper.service';
/**
* Define that an ID might be a number or a string.
*/
export type ModelId = number | string;
export interface ModelConstructor {
new (...args: any[]): BaseModel;
}
@ -34,7 +29,7 @@ export abstract class BaseModel extends OpenSlidesComponent implements Deseriali
/**
* force children of BaseModel to have an id
*/
public abstract id: ModelId;
public abstract id: number;
/**
* constructor that calls super from parent class

2
client/src/app/shared/models/motions/motion.ts
View File

@ -81,7 +81,7 @@ export class Motion extends BaseModel {
});
// observe for new models
this.DS.getObservable().subscribe(newModel => {
this.DS.changeObservable.subscribe(newModel => {
if (newModel instanceof Workflow) {
if (newModel.isStateContained(this.state_id)) {
this.workflow = newModel as Workflow;

2
client/src/app/site/motions/category-list/category-list.component.ts
View File

@ -59,7 +59,7 @@ export class CategoryListComponent extends BaseComponent implements OnInit {
// Observe DataStore for motions. Initially, executes once for every motion.
// The alternative approach is to put the observable as DataSource to the table
this.DS.getObservable().subscribe(newModel => {
this.DS.changeObservable.subscribe(newModel => {
if (newModel instanceof Category) {
this.categoryArray = this.DS.getAll<Category>(Category);
this.dataSource.data = this.categoryArray;

2
client/src/app/site/motions/motion-detail/motion-detail.component.ts
View File

@ -91,7 +91,7 @@ export class MotionDetailComponent extends BaseComponent implements OnInit {
this.motion = this.DS.get(Motion, params.id) as Motion;
// Observe motion to get the motion in the parameter and also get the changes
this.DS.getObservable().subscribe(newModel => {
this.DS.changeObservable.subscribe(newModel => {
if (newModel instanceof Motion) {
if (newModel.id === +params.id) {
this.motion = newModel as Motion;

2
client/src/app/site/motions/motion-list/motion-list.component.ts
View File

@ -101,7 +101,7 @@ export class MotionListComponent extends BaseComponent implements OnInit {
// Observe DataStore for motions. Initially, executes once for every motion.
// The alternative approach is to put the observable as DataSource to the table
this.DS.getObservable().subscribe(newModel => {
this.DS.changeObservable.subscribe(newModel => {
if (newModel instanceof Motion) {
this.motionArray = this.DS.getAll<Motion>(Motion);
this.dataSource.data = this.motionArray;

2
client/src/app/site/start/start.component.ts
View File

@ -64,7 +64,7 @@ export class StartComponent extends BaseComponent implements OnInit {
}
// observe title and text in DS
this.DS.getObservable().subscribe(newModel => {
this.DS.changeObservable.subscribe(newModel => {
if (newModel instanceof Config) {
if (newModel.key === 'general_event_welcome_title') {
this.welcomeTitle = newModel.value as string;