MM-30482 [Gekidou] Data Operator (#5346)

* MM_30482: Imported database and types /database folder

* MM_30482: Imported database and types /database folder

* MM_30482 : All tests are passing

* MM_30482 : Updating patch package for watermelon db

* MM_30482 : Fixing CI issue

* MM_30482 : Updating TS  complaint

* Update index.ts

* MM_30482 : Code clean up

Co-authored-by: Avinash Lingaloo <>

app/database/models/server/posts_in_thread.ts

@@ -0,0 +1,39 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+import {Relation} from '@nozbe/watermelondb';
+import {field, immutableRelation} from '@nozbe/watermelondb/decorators';
+import Model, {Associations} from '@nozbe/watermelondb/Model';
+
+import {MM_TABLES} from '@constants/database';
+import Post from '@typings/database/post';
+
+const {POST, POSTS_IN_THREAD} = MM_TABLES.SERVER;
+
+/**
+ * PostsInThread model helps us to combine adjacent threads together without leaving
+ * gaps in between for an efficient user reading experience for threads.
+ */
+export default class PostsInThread extends Model {
+    /** table (entity name) : PostsInThread */
+    static table = POSTS_IN_THREAD;
+
+    /** associations : Describes every relationship to this entity. */
+    static associations: Associations = {
+
+        /** A POST can have multiple POSTS_IN_THREAD.(relationship is 1:N)*/
+        [POST]: {type: 'belongs_to', key: 'post_id'},
+    };
+
+    /** earliest : Lower bound of a timestamp range */
+    @field('earliest') earliest!: number;
+
+    /** latest : Upper bound of a timestamp range */
+    @field('latest') latest!: number;
+
+    /** post_id : The foreign key of the related Post model */
+    @field('post_id') postId!: string;
+
+    /** post : The related record to the parent Post model */
+    @immutableRelation(POST, 'post_id') post!: Relation<Post>;
+}