feat(backend): Assignment-, Group- en SubmissionRepository aangemaakt

backend/src/entities/assignments/assignment.entity.ts

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+import {Entity, Enum, ManyToOne, OneToMany, PrimaryKey, Property} from "@mikro-orm/core";
+import {Class} from "../classes/class.entity";
+import {Group} from "./group.entity"
+import {Language} from "../content/language";
+
+@Entity()
+export class Assignment {
+    @ManyToOne({entity: () => Class, primary: true})
+    within!: Class;
+
+    @PrimaryKey({type: "number"})
+    id!: number;
+
+    @Property({type: "string"})
+    title!: string;
+
+    @Property({type: "text"})
+    description!: string;
+
+    @Property({type: "string"})
+    learningPathHruid!: string;
+
+    @Enum({items: () => Language})
+    learningPathLanguage!: Language;
+
+    @OneToMany({entity: () => Group, mappedBy: "assignment"})
+    groups!: Group[];
+}

backend/src/entities/assignments/group.entity.ts

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+import {Entity, ManyToMany, ManyToOne, PrimaryKey} from "@mikro-orm/core";
+import {Assignment} from "./assignment.entity";
+import {Student} from "../users/student.entity";
+
+@Entity()
+export class Group {
+    @ManyToOne({entity: () => Assignment, primary: true})
+    assignment!: Assignment;
+
+    @PrimaryKey({type: "integer"})
+    groupNumber!: number;
+
+    @ManyToMany({entity: () => Student})
+    members!: Student[];
+}

backend/src/entities/assignments/submission.entity.ts

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+import {Student} from "../users/student.entity";
+import {Group} from "./group.entity";
+import {Entity, Enum, ManyToOne, PrimaryKey, Property} from "@mikro-orm/core";
+import {Language} from "../content/language";
+
+@Entity()
+export class Submission {
+    @PrimaryKey({type: "string"})
+    learningObjectHruid!: string;
+
+    @Enum({items: () => Language, primary: true})
+    learningObjectLanguage!: Language;
+
+    @PrimaryKey({type: "string"})
+    learningObjectVersion: string = "1";
+
+    @PrimaryKey({type: "integer"})
+    submissionNumber!: number;
+
+    @ManyToOne({entity: () => Student})
+    submitter!: Student;
+
+    @Property({type: "datetime"})
+    submissionTime!: Date;
+
+    @ManyToOne({entity: () => Group, nullable: true})
+    onBehalfOf?: Group;
+
+    @Property({type: "json"})
+    content!: string;
+}