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			994 lines
		
	
	
		
			33 KiB
		
	
	
	
		
			HTML
		
	
	
	
	
	
| <!DOCTYPE html>
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| <html lang="en">
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| <head>
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|     <meta charset="utf-8">
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|     <title>JSDoc: Source: entities/note.js</title>
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| 
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| </head>
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| 
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| <body>
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| 
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| <div id="main">
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| 
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|     <h1 class="page-title">Source: entities/note.js</h1>
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| 
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|     
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| 
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| 
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| 
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|     
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|     <section>
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|         <article>
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|             <pre class="prettyprint source linenums"><code>"use strict";
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| 
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| const Entity = require('./entity');
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| const Attribute = require('./attribute');
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| const protectedSessionService = require('../services/protected_session');
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| const sql = require('../services/sql');
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| const utils = require('../services/utils');
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| const dateUtils = require('../services/date_utils');
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| const entityChangesService = require('../services/entity_changes.js');
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| 
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| const LABEL = 'label';
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| const RELATION = 'relation';
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| 
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| /**
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|  * This represents a Note which is a central object in the Trilium Notes project.
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|  *
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|  * @property {string} noteId - primary key
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|  * @property {string} type - one of "text", "code", "file" or "render"
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|  * @property {string} mime - MIME type, e.g. "text/html"
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|  * @property {string} title - note title
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|  * @property {boolean} isProtected - true if note is protected
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|  * @property {boolean} isDeleted - true if note is deleted
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|  * @property {string|null} deleteId - ID identifying delete transaction
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|  * @property {string} dateCreated - local date time (with offset)
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|  * @property {string} dateModified - local date time (with offset)
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|  * @property {string} utcDateCreated
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|  * @property {string} utcDateModified
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|  *
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|  * @extends Entity
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|  */
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| class Note extends Entity {
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|     static get entityName() { return "notes"; }
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|     static get primaryKeyName() { return "noteId"; }
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|     static get hashedProperties() { return ["noteId", "title", "type", "mime", "isProtected", "isDeleted", "deleteId"]; }
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| 
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|     /**
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|      * @param row - object containing database row from "notes" table
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|      */
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|     constructor(row) {
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|         super(row);
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| 
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|         this.isProtected = !!this.isProtected;
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|         /* true if content is either not encrypted
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|          * or encrypted, but with available protected session (so effectively decrypted) */
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|         this.isContentAvailable = true;
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| 
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|         // check if there's noteId, otherwise this is a new entity which wasn't encrypted yet
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|         if (this.isProtected && this.noteId) {
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|             this.isContentAvailable = protectedSessionService.isProtectedSessionAvailable();
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| 
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|             if (this.isContentAvailable) {
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|                 try {
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|                     this.title = protectedSessionService.decryptString(this.title);
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|                 }
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|                 catch (e) {
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|                     throw new Error(`Could not decrypt title of note ${this.noteId}: ${e.message} ${e.stack}`)
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|                 }
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|             }
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|             else {
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|                 this.title = "[protected]";
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|             }
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|         }
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|     }
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| 
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|     /*
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|      * Note content has quite special handling - it's not a separate entity, but a lazily loaded
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|      * part of Note entity with it's own sync. Reasons behind this hybrid design has been:
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|      *
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|      * - content can be quite large and it's not necessary to load it / fill memory for any note access even if we don't need a content, especially for bulk operations like search
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|      * - changes in the note metadata or title should not trigger note content sync (so we keep separate utcDateModified and entity changes records)
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|      * - but to the user note content and title changes are one and the same - single dateModified (so all changes must go through Note and content is not a separate entity)
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|      */
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| 
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|     /** @returns {*} */
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|     getContent(silentNotFoundError = false) {
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|         if (this.content === undefined) {
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|             const row = sql.getRow(`SELECT content FROM note_contents WHERE noteId = ?`, [this.noteId]);
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| 
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|             if (!row) {
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|                 if (silentNotFoundError) {
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|                     return undefined;
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|                 }
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|                 else {
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|                     throw new Error("Cannot find note content for noteId=" + this.noteId);
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|                 }
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|             }
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| 
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|             this.content = row.content;
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| 
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|             if (this.isProtected) {
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|                 if (this.isContentAvailable) {
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|                     this.content = this.content === null ? null : protectedSessionService.decrypt(this.content);
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|                 }
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|                 else {
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|                     this.content = "";
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|                 }
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|             }
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|         }
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| 
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|         if (this.isStringNote()) {
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|             return this.content === null
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|                 ? ""
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|                 : this.content.toString("UTF-8");
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|         }
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|         else {
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|             return this.content;
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|         }
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|     }
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| 
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|     /** @returns {{contentLength, dateModified, utcDateModified}} */
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|     getContentMetadata() {
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|         return sql.getRow(`
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|             SELECT 
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|                 LENGTH(content) AS contentLength, 
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|                 dateModified,
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|                 utcDateModified 
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|             FROM note_contents 
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|             WHERE noteId = ?`, [this.noteId]);
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|     }
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| 
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|     /** @returns {*} */
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|     getJsonContent() {
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|         const content = this.getContent();
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| 
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|         if (!content || !content.trim()) {
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|             return null;
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|         }
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| 
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|         return JSON.parse(content);
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|     }
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| 
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|     setContent(content) {
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|         if (content === null || content === undefined) {
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|             throw new Error(`Cannot set null content to note ${this.noteId}`);
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|         }
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| 
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|         if (this.isStringNote()) {
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|             content = content.toString();
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|         }
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|         else {
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|             content = Buffer.isBuffer(content) ? content : Buffer.from(content);
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|         }
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| 
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|         this.content = content;
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| 
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|         const pojo = {
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|             noteId: this.noteId,
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|             content: content,
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|             dateModified: dateUtils.localNowDateTime(),
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|             utcDateModified: dateUtils.utcNowDateTime()
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|         };
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| 
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|         if (this.isProtected) {
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|             if (this.isContentAvailable) {
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|                 pojo.content = protectedSessionService.encrypt(pojo.content);
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|             }
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|             else {
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|                 throw new Error(`Cannot update content of noteId=${this.noteId} since we're out of protected session.`);
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|             }
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|         }
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| 
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|         sql.upsert("note_contents", "noteId", pojo);
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| 
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|         const hash = utils.hash(this.noteId + "|" + pojo.content.toString());
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| 
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|         entityChangesService.addEntityChange({
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|             entityName: 'note_contents',
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|             entityId: this.noteId,
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|             hash: hash,
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|             isErased: false,
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|             utcDateChanged: pojo.utcDateModified
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|         }, null);
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|     }
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| 
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|     setJsonContent(content) {
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|         this.setContent(JSON.stringify(content, null, '\t'));
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|     }
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| 
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|     /** @returns {boolean} true if this note is the root of the note tree. Root note has "root" noteId */
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|     isRoot() {
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|         return this.noteId === 'root';
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|     }
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| 
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|     /** @returns {boolean} true if this note is of application/json content type */
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|     isJson() {
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|         return this.mime === "application/json";
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|     }
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| 
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|     /** @returns {boolean} true if this note is JavaScript (code or attachment) */
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|     isJavaScript() {
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|         return (this.type === "code" || this.type === "file")
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|             && (this.mime.startsWith("application/javascript")
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|                 || this.mime === "application/x-javascript"
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|                 || this.mime === "text/javascript");
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|     }
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| 
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|     /** @returns {boolean} true if this note is HTML */
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|     isHtml() {
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|         return (this.type === "code" || this.type === "file" || this.type === "render") && this.mime === "text/html";
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|     }
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| 
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|     /** @returns {boolean} true if the note has string content (not binary) */
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|     isStringNote() {
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|         return utils.isStringNote(this.type, this.mime);
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|     }
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| 
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|     /** @returns {string} JS script environment - either "frontend" or "backend" */
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|     getScriptEnv() {
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|         if (this.isHtml() || (this.isJavaScript() && this.mime.endsWith('env=frontend'))) {
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|             return "frontend";
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|         }
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| 
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|         if (this.type === 'render') {
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|             return "frontend";
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|         }
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| 
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|         if (this.isJavaScript() && this.mime.endsWith('env=backend')) {
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|             return "backend";
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|         }
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| 
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|         return null;
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|     }
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| 
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|     loadOwnedAttributesToCache() {
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|         this.__ownedAttributeCache = this.repository.getEntities(`SELECT * FROM attributes WHERE isDeleted = 0 AND noteId = ?`, [this.noteId]);
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|         return this.__ownedAttributeCache;
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|     }
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| 
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|     /**
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|      * This method is a faster variant of getAttributes() which looks for only owned attributes.
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|      * Use when inheritance is not needed and/or in batch/performance sensitive operations.
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|      *
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|      * @param {string} [type] - (optional) attribute type to filter
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|      * @param {string} [name] - (optional) attribute name to filter
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|      * @returns {Attribute[]} note's "owned" attributes - excluding inherited ones
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|      */
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|     getOwnedAttributes(type, name) {
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|         if (!this.__ownedAttributeCache) {
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|             this.loadOwnedAttributesToCache();
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|         }
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| 
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|         if (type && name) {
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|             return this.__ownedAttributeCache.filter(attr => attr.type === type && attr.name === name);
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|         }
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|         else if (type) {
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|             return this.__ownedAttributeCache.filter(attr => attr.type === type);
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|         }
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|         else if (name) {
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|             return this.__ownedAttributeCache.filter(attr => attr.name === name);
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|         }
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|         else {
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|             return this.__ownedAttributeCache.slice();
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|         }
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|     }
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| 
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|     /**
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|      * @returns {Attribute} attribute belonging to this specific note (excludes inherited attributes)
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|      *
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|      * This method can be significantly faster than the getAttribute()
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|      */
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|     getOwnedAttribute(type, name) {
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|         const attrs = this.getOwnedAttributes(type, name);
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| 
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|         return attrs.length > 0 ? attrs[0] : null;
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|     }
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| 
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|     /**
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|      * @returns {Attribute[]} relations targetting this specific note
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|      */
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|     getTargetRelations() {
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|         return this.repository.getEntities("SELECT * FROM attributes WHERE type = 'relation' AND isDeleted = 0 AND value = ?", [this.noteId]);
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|     }
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| 
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|     /**
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|      * @param {string} [type] - (optional) attribute type to filter
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|      * @param {string} [name] - (optional) attribute name to filter
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|      * @returns {Attribute[]} all note's attributes, including inherited ones
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|      */
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|     getAttributes(type, name) {
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|         if (!this.__attributeCache) {
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|             this.loadAttributesToCache();
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|         }
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| 
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|         if (type && name) {
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|             return this.__attributeCache.filter(attr => attr.type === type && attr.name === name);
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|         }
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|         else if (type) {
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|             return this.__attributeCache.filter(attr => attr.type === type);
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|         }
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|         else if (name) {
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|             return this.__attributeCache.filter(attr => attr.name === name);
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|         }
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|         else {
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|             return this.__attributeCache.slice();
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|         }
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|     }
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| 
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|     /**
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|      * @param {string} [name] - label name to filter
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|      * @returns {Attribute[]} all note's labels (attributes with type label), including inherited ones
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|      */
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|     getLabels(name) {
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|         return this.getAttributes(LABEL, name);
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|     }
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| 
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|     /**
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|      * @param {string} [name] - label name to filter
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|      * @returns {Attribute[]} all note's labels (attributes with type label), excluding inherited ones
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|      */
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|     getOwnedLabels(name) {
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|         return this.getOwnedAttributes(LABEL, name);
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|     }
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| 
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|     /**
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|      * @param {string} [name] - relation name to filter
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|      * @returns {Attribute[]} all note's relations (attributes with type relation), including inherited ones
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|      */
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|     getRelations(name) {
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|         return this.getAttributes(RELATION, name);
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|     }
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| 
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|     /**
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|      * @param {string} [name] - relation name to filter
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|      * @returns {Attribute[]} all note's relations (attributes with type relation), excluding inherited ones
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|      */
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|     getOwnedRelations(name) {
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|         return this.getOwnedAttributes(RELATION, name);
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|     }
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| 
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|     /**
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|      * @param {string} [name] - relation name to filter
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|      * @returns {Note[]}
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|      */
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|     getRelationTargets(name) {
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|         const relations = this.getRelations(name);
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|         const targets = [];
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| 
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|         for (const relation of relations) {
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|             targets.push(relation.getTargetNote());
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|         }
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| 
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|         return targets;
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|     }
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| 
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|     /**
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|      * Clear note's attributes cache to force fresh reload for next attribute request.
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|      * Cache is note instance scoped.
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|      */
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|     invalidateAttributeCache() {
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|         this.__attributeCache = null;
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|         this.__ownedAttributeCache = null;
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|     }
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| 
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|     loadAttributesToCache() {
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|         const attributes = this.repository.getEntities(`
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|             WITH RECURSIVE
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|             tree(noteId, level) AS (
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|                 SELECT ?, 0
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|                 UNION
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|                 SELECT branches.parentNoteId, tree.level + 1 
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|                     FROM branches
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|                     JOIN tree ON branches.noteId = tree.noteId
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|                 WHERE branches.isDeleted = 0
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|             ),
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|             treeWithAttrs(noteId, level) AS (
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|                 SELECT * FROM tree
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|                 UNION
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|                 SELECT attributes.value, treeWithAttrs.level FROM attributes
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|                      JOIN treeWithAttrs ON treeWithAttrs.noteId = attributes.noteId
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|                 WHERE attributes.isDeleted = 0
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|                   AND attributes.type = 'relation'
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|                   AND attributes.name = 'template'
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|                 )
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|             SELECT attributes.* FROM attributes JOIN treeWithAttrs ON attributes.noteId = treeWithAttrs.noteId
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|             WHERE attributes.isDeleted = 0 AND (attributes.isInheritable = 1 OR treeWithAttrs.level = 0)
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|             ORDER BY level, noteId, position`, [this.noteId]);
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|         // attributes are ordered so that "closest" attributes are first
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|         // we order by noteId so that attributes from same note stay together. Actual noteId ordering doesn't matter.
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| 
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|         const filteredAttributes = attributes.filter((attr, index) => {
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|             // if this exact attribute already appears then don't include it (can happen via cloning)
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|             if (attributes.findIndex(it => it.attributeId === attr.attributeId) !== index) {
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|                 return false;
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|             }
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| 
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|             // FIXME: this code is quite questionable, one problem is that other caches (Froca, Becca) have nothing like that
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|             if (attr.isDefinition()) {
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|                 const firstDefinitionIndex = attributes.findIndex(el => el.type === attr.type && el.name === attr.name);
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| 
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|                 // keep only if this element is the first definition for this type & name
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|                 return firstDefinitionIndex === index;
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|             }
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|             else {
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|                 const definitionAttr = attributes.find(el => el.type === 'label' && el.name === attr.type + ':' + attr.name);
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| 
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|                 if (!definitionAttr) {
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|                     return true;
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|                 }
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| 
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|                 const definition = definitionAttr.getDefinition();
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| 
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|                 if (definition.multiplicity === 'multi') {
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|                     return true;
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|                 }
 | |
|                 else {
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|                     const firstAttrIndex = attributes.findIndex(el => el.type === attr.type && el.name === attr.name);
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| 
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|                     // in case of single-valued attribute we'll keep it only if it's first (closest)
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|                     return firstAttrIndex === index;
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|                 }
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|             }
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|         });
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| 
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|         this.__attributeCache = filteredAttributes;
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|     }
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| 
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|     /**
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|      * @param {string} type - attribute type (label, relation, etc.)
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|      * @param {string} name - attribute name
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|      * @returns {boolean} true if note has an attribute with given type and name (including inherited)
 | |
|      */
 | |
|     hasAttribute(type, name) {
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|         return !!this.getAttribute(type, name);
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|     }
 | |
| 
 | |
|     /**
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|      * @param {string} type - attribute type (label, relation, etc.)
 | |
|      * @param {string} name - attribute name
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|      * @returns {boolean} true if note has an attribute with given type and name (excluding inherited)
 | |
|      */
 | |
|     hasOwnedAttribute(type, name) {
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|         return !!this.getOwnedAttribute(type, name);
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|     }
 | |
| 
 | |
|     /**
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|      * @param {string} type - attribute type (label, relation, etc.)
 | |
|      * @param {string} name - attribute name
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|      * @returns {Attribute} attribute of given type and name. If there's more such attributes, first is  returned. Returns null if there's no such attribute belonging to this note.
 | |
|      */
 | |
|     getAttribute(type, name) {
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|         const attributes = this.getAttributes();
 | |
| 
 | |
|         return attributes.find(attr => attr.type === type && attr.name === name);
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|     }
 | |
| 
 | |
|     /**
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|      * @param {string} type - attribute type (label, relation, etc.)
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|      * @param {string} name - attribute name
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|      * @returns {string|null} attribute value of given type and name or null if no such attribute exists.
 | |
|      */
 | |
|     getAttributeValue(type, name) {
 | |
|         const attr = this.getAttribute(type, name);
 | |
| 
 | |
|         return attr ? attr.value : null;
 | |
|     }
 | |
| 
 | |
|     /**
 | |
|      * @param {string} type - attribute type (label, relation, etc.)
 | |
|      * @param {string} name - attribute name
 | |
|      * @returns {string|null} attribute value of given type and name or null if no such attribute exists.
 | |
|      */
 | |
|     getOwnedAttributeValue(type, name) {
 | |
|         const attr = this.getOwnedAttribute(type, name);
 | |
| 
 | |
|         return attr ? attr.value : null;
 | |
|     }
 | |
| 
 | |
|     /**
 | |
|      * Based on enabled, attribute is either set or removed.
 | |
|      *
 | |
|      * @param {string} type - attribute type ('relation', 'label' etc.)
 | |
|      * @param {boolean} enabled - toggle On or Off
 | |
|      * @param {string} name - attribute name
 | |
|      * @param {string} [value] - attribute value (optional)
 | |
|      */
 | |
|     toggleAttribute(type, enabled, name, value) {
 | |
|         if (enabled) {
 | |
|             this.setAttribute(type, name, value);
 | |
|         }
 | |
|         else {
 | |
|             this.removeAttribute(type, name, value);
 | |
|         }
 | |
|     }
 | |
| 
 | |
|     /**
 | |
|      * Update's given attribute's value or creates it if it doesn't exist
 | |
|      *
 | |
|      * @param {string} type - attribute type (label, relation, etc.)
 | |
|      * @param {string} name - attribute name
 | |
|      * @param {string} [value] - attribute value (optional)
 | |
|      */
 | |
|     setAttribute(type, name, value) {
 | |
|         const attributes = this.loadOwnedAttributesToCache();
 | |
|         let attr = attributes.find(attr => attr.type === type && attr.name === name);
 | |
| 
 | |
|         if (attr) {
 | |
|             if (attr.value !== value) {
 | |
|                 attr.value = value;
 | |
|                 attr.save();
 | |
| 
 | |
|                 this.invalidateAttributeCache();
 | |
|             }
 | |
|         }
 | |
|         else {
 | |
|             attr = new Attribute({
 | |
|                 noteId: this.noteId,
 | |
|                 type: type,
 | |
|                 name: name,
 | |
|                 value: value !== undefined ? value : ""
 | |
|             });
 | |
| 
 | |
|             attr.save();
 | |
| 
 | |
|             this.invalidateAttributeCache();
 | |
|         }
 | |
|     }
 | |
| 
 | |
|     /**
 | |
|      * Removes given attribute name-value pair if it exists.
 | |
|      *
 | |
|      * @param {string} type - attribute type (label, relation, etc.)
 | |
|      * @param {string} name - attribute name
 | |
|      * @param {string} [value] - attribute value (optional)
 | |
|      */
 | |
|     removeAttribute(type, name, value) {
 | |
|         const attributes = this.loadOwnedAttributesToCache();
 | |
| 
 | |
|         for (const attribute of attributes) {
 | |
|             if (attribute.type === type && attribute.name === name && (value === undefined || value === attribute.value)) {
 | |
|                 attribute.isDeleted = true;
 | |
|                 attribute.save();
 | |
| 
 | |
|                 this.invalidateAttributeCache();
 | |
|             }
 | |
|         }
 | |
|     }
 | |
| 
 | |
|     /**
 | |
|      * @return {Attribute}
 | |
|      */
 | |
|     addAttribute(type, name, value = "", isInheritable = false, position = 1000) {
 | |
|         const attr = new Attribute({
 | |
|             noteId: this.noteId,
 | |
|             type: type,
 | |
|             name: name,
 | |
|             value: value,
 | |
|             isInheritable: isInheritable,
 | |
|             position: position
 | |
|         });
 | |
| 
 | |
|         attr.save();
 | |
| 
 | |
|         this.invalidateAttributeCache();
 | |
| 
 | |
|         return attr;
 | |
|     }
 | |
| 
 | |
|     addLabel(name, value = "", isInheritable = false) {
 | |
|         return this.addAttribute(LABEL, name, value, isInheritable);
 | |
|     }
 | |
| 
 | |
|     addRelation(name, targetNoteId, isInheritable = false) {
 | |
|         return this.addAttribute(RELATION, name, targetNoteId, isInheritable);
 | |
|     }
 | |
| 
 | |
|     /**
 | |
|      * @param {string} name - label name
 | |
|      * @returns {boolean} true if label exists (including inherited)
 | |
|      */
 | |
|     hasLabel(name) { return this.hasAttribute(LABEL, name); }
 | |
| 
 | |
|     /**
 | |
|      * @param {string} name - label name
 | |
|      * @returns {boolean} true if label exists (excluding inherited)
 | |
|      */
 | |
|     hasOwnedLabel(name) { return this.hasOwnedAttribute(LABEL, name); }
 | |
| 
 | |
|     /**
 | |
|      * @param {string} name - relation name
 | |
|      * @returns {boolean} true if relation exists (including inherited)
 | |
|      */
 | |
|     hasRelation(name) { return this.hasAttribute(RELATION, name); }
 | |
| 
 | |
|     /**
 | |
|      * @param {string} name - relation name
 | |
|      * @returns {boolean} true if relation exists (excluding inherited)
 | |
|      */
 | |
|     hasOwnedRelation(name) { return this.hasOwnedAttribute(RELATION, name); }
 | |
| 
 | |
|     /**
 | |
|      * @param {string} name - label name
 | |
|      * @returns {Attribute|null} label if it exists, null otherwise
 | |
|      */
 | |
|     getLabel(name) { return this.getAttribute(LABEL, name); }
 | |
| 
 | |
|     /**
 | |
|      * @param {string} name - label name
 | |
|      * @returns {Attribute|null} label if it exists, null otherwise
 | |
|      */
 | |
|     getOwnedLabel(name) { return this.getOwnedAttribute(LABEL, name); }
 | |
| 
 | |
|     /**
 | |
|      * @param {string} name - relation name
 | |
|      * @returns {Attribute|null} relation if it exists, null otherwise
 | |
|      */
 | |
|     getRelation(name) { return this.getAttribute(RELATION, name); }
 | |
| 
 | |
|     /**
 | |
|      * @param {string} name - relation name
 | |
|      * @returns {Attribute|null} relation if it exists, null otherwise
 | |
|      */
 | |
|     getOwnedRelation(name) { return this.getOwnedAttribute(RELATION, name); }
 | |
| 
 | |
|     /**
 | |
|      * @param {string} name - label name
 | |
|      * @returns {string|null} label value if label exists, null otherwise
 | |
|      */
 | |
|     getLabelValue(name) { return this.getAttributeValue(LABEL, name); }
 | |
| 
 | |
|     /**
 | |
|      * @param {string} name - label name
 | |
|      * @returns {string|null} label value if label exists, null otherwise
 | |
|      */
 | |
|     getOwnedLabelValue(name) { return this.getOwnedAttributeValue(LABEL, name); }
 | |
| 
 | |
|     /**
 | |
|      * @param {string} name - relation name
 | |
|      * @returns {string|null} relation value if relation exists, null otherwise
 | |
|      */
 | |
|     getRelationValue(name) { return this.getAttributeValue(RELATION, name); }
 | |
| 
 | |
|     /**
 | |
|      * @param {string} name - relation name
 | |
|      * @returns {string|null} relation value if relation exists, null otherwise
 | |
|      */
 | |
|     getOwnedRelationValue(name) { return this.getOwnedAttributeValue(RELATION, name); }
 | |
| 
 | |
|     /**
 | |
|      * @param {string} name
 | |
|      * @returns {Note|null} target note of the relation or null (if target is empty or note was not found)
 | |
|      */
 | |
|     getRelationTarget(name) {
 | |
|         const relation = this.getRelation(name);
 | |
| 
 | |
|         return relation ? this.repository.getNote(relation.value) : null;
 | |
|     }
 | |
| 
 | |
|     /**
 | |
|      * @param {string} name
 | |
|      * @returns {Note|null} target note of the relation or null (if target is empty or note was not found)
 | |
|      */
 | |
|     getOwnedRelationTarget(name) {
 | |
|         const relation = this.getOwnedRelation(name);
 | |
| 
 | |
|         return relation ? this.repository.getNote(relation.value) : null;
 | |
|     }
 | |
| 
 | |
|     /**
 | |
|      * Based on enabled, label is either set or removed.
 | |
|      *
 | |
|      * @param {boolean} enabled - toggle On or Off
 | |
|      * @param {string} name - label name
 | |
|      * @param {string} [value] - label value (optional)
 | |
|      */
 | |
|     toggleLabel(enabled, name, value) { return this.toggleAttribute(LABEL, enabled, name, value); }
 | |
| 
 | |
|     /**
 | |
|      * Based on enabled, relation is either set or removed.
 | |
|      *
 | |
|      * @param {boolean} enabled - toggle On or Off
 | |
|      * @param {string} name - relation name
 | |
|      * @param {string} [value] - relation value (noteId)
 | |
|      */
 | |
|     toggleRelation(enabled, name, value) { return this.toggleAttribute(RELATION, enabled, name, value); }
 | |
| 
 | |
|     /**
 | |
|      * Update's given label's value or creates it if it doesn't exist
 | |
|      *
 | |
|      * @param {string} name - label name
 | |
|      * @param {string} [value] - label value
 | |
|      */
 | |
|     setLabel(name, value) { return this.setAttribute(LABEL, name, value); }
 | |
| 
 | |
|     /**
 | |
|      * Update's given relation's value or creates it if it doesn't exist
 | |
|      *
 | |
|      * @param {string} name - relation name
 | |
|      * @param {string} value - relation value (noteId)
 | |
|      */
 | |
|     setRelation(name, value) { return this.setAttribute(RELATION, name, value); }
 | |
| 
 | |
|     /**
 | |
|      * Remove label name-value pair, if it exists.
 | |
|      *
 | |
|      * @param {string} name - label name
 | |
|      * @param {string} [value] - label value
 | |
|      */
 | |
|     removeLabel(name, value) { return this.removeAttribute(LABEL, name, value); }
 | |
| 
 | |
|     /**
 | |
|      * Remove relation name-value pair, if it exists.
 | |
|      *
 | |
|      * @param {string} name - relation name
 | |
|      * @param {string} [value] - relation value (noteId)
 | |
|      */
 | |
|     removeRelation(name, value) { return this.removeAttribute(RELATION, name, value); }
 | |
| 
 | |
|     /**
 | |
|      * @return {string[]} return list of all descendant noteIds of this note. Returning just noteIds because number of notes can be huge. Includes also this note's noteId
 | |
|      */
 | |
|     getDescendantNoteIds() {
 | |
|         return sql.getColumn(`
 | |
|             WITH RECURSIVE
 | |
|             tree(noteId) AS (
 | |
|                 SELECT ?
 | |
|                 UNION
 | |
|                 SELECT branches.noteId FROM branches
 | |
|                     JOIN tree ON branches.parentNoteId = tree.noteId
 | |
|                     JOIN notes ON notes.noteId = branches.noteId
 | |
|                 WHERE notes.isDeleted = 0
 | |
|                   AND branches.isDeleted = 0
 | |
|             )
 | |
|             SELECT noteId FROM tree`, [this.noteId]);
 | |
|     }
 | |
| 
 | |
|     /**
 | |
|      * Finds descendant notes with given attribute name and value. Only own attributes are considered, not inherited ones
 | |
|      *
 | |
|      * @param {string} type - attribute type (label, relation, etc.)
 | |
|      * @param {string} name - attribute name
 | |
|      * @param {string} [value] - attribute value
 | |
|      * @returns {Note[]}
 | |
|      */
 | |
|     getDescendantNotesWithAttribute(type, name, value) {
 | |
|         const params = [this.noteId, name];
 | |
|         let valueCondition = "";
 | |
| 
 | |
|         if (value !== undefined) {
 | |
|             params.push(value);
 | |
|             valueCondition = " AND attributes.value = ?";
 | |
|         }
 | |
| 
 | |
|         const notes = this.repository.getEntities(`
 | |
|             WITH RECURSIVE
 | |
|             tree(noteId) AS (
 | |
|                 SELECT ?
 | |
|                 UNION
 | |
|                 SELECT branches.noteId FROM branches
 | |
|                     JOIN tree ON branches.parentNoteId = tree.noteId
 | |
|                     JOIN notes ON notes.noteId = branches.noteId
 | |
|                 WHERE notes.isDeleted = 0
 | |
|                   AND branches.isDeleted = 0
 | |
|             )
 | |
|             SELECT notes.* FROM notes 
 | |
|             JOIN tree ON tree.noteId = notes.noteId
 | |
|             JOIN attributes ON attributes.noteId = notes.noteId
 | |
|             WHERE attributes.isDeleted = 0 
 | |
|               AND attributes.name = ?
 | |
|               ${valueCondition} 
 | |
|             ORDER BY noteId, position`, params);
 | |
| 
 | |
|         return notes;
 | |
|     }
 | |
| 
 | |
|     /**
 | |
|      * Finds descendant notes with given label name and value. Only own labels are considered, not inherited ones
 | |
|      *
 | |
|      * @param {string} name - label name
 | |
|      * @param {string} [value] - label value
 | |
|      * @returns {Note[]}
 | |
|      */
 | |
|     getDescendantNotesWithLabel(name, value) { return this.getDescendantNotesWithAttribute(LABEL, name, value); }
 | |
| 
 | |
|     /**
 | |
|      * Finds descendant notes with given relation name and value. Only own relations are considered, not inherited ones
 | |
|      *
 | |
|      * @param {string} name - relation name
 | |
|      * @param {string} [value] - relation value
 | |
|      * @returns {Note[]}
 | |
|      */
 | |
|     getDescendantNotesWithRelation(name, value) { return this.getDescendantNotesWithAttribute(RELATION, name, value); }
 | |
| 
 | |
|     /**
 | |
|      * Returns note revisions of this note.
 | |
|      *
 | |
|      * @returns {NoteRevision[]}
 | |
|      */
 | |
|     getRevisions() {
 | |
|         return this.repository.getEntities("SELECT * FROM note_revisions WHERE noteId = ?", [this.noteId]);
 | |
|     }
 | |
| 
 | |
|     /**
 | |
|      * Get list of links coming out of this note.
 | |
|      *
 | |
|      * @deprecated - not intended for general use
 | |
|      * @returns {Attribute[]}
 | |
|      */
 | |
|     getLinks() {
 | |
|         return this.repository.getEntities(`
 | |
|             SELECT * 
 | |
|             FROM attributes 
 | |
|             WHERE noteId = ? AND 
 | |
|                   isDeleted = 0 AND
 | |
|                   type = 'relation' AND
 | |
|                   name IN ('internalLink', 'imageLink', 'relationMapLink', 'includeNoteLink')`, [this.noteId]);
 | |
|     }
 | |
| 
 | |
|     /**
 | |
|      * @returns {Branch[]}
 | |
|      */
 | |
|     getBranches() {
 | |
|         return this.repository.getEntities("SELECT * FROM branches WHERE isDeleted = 0 AND noteId = ?", [this.noteId]);
 | |
|     }
 | |
| 
 | |
|     /**
 | |
|      * @returns {boolean} - true if note has children
 | |
|      */
 | |
|     hasChildren() {
 | |
|         return this.getChildNotes().length > 0;
 | |
|     }
 | |
| 
 | |
|     /**
 | |
|      * @returns {Note[]} child notes of this note
 | |
|      */
 | |
|     getChildNotes() {
 | |
|         return this.repository.getEntities(`
 | |
|           SELECT notes.* 
 | |
|           FROM branches 
 | |
|             JOIN notes USING(noteId) 
 | |
|           WHERE notes.isDeleted = 0
 | |
|                 AND branches.isDeleted = 0
 | |
|                 AND branches.parentNoteId = ?
 | |
|           ORDER BY branches.notePosition`, [this.noteId]);
 | |
|     }
 | |
| 
 | |
|     /**
 | |
|      * @returns {Branch[]} child branches of this note
 | |
|      */
 | |
|     getChildBranches() {
 | |
|         return this.repository.getEntities(`
 | |
|           SELECT branches.* 
 | |
|           FROM branches 
 | |
|           WHERE branches.isDeleted = 0
 | |
|                 AND branches.parentNoteId = ?
 | |
|           ORDER BY branches.notePosition`, [this.noteId]);
 | |
|     }
 | |
| 
 | |
|     /**
 | |
|      * @returns {Note[]} parent notes of this note (note can have multiple parents because of cloning)
 | |
|      */
 | |
|     getParentNotes() {
 | |
|         return this.repository.getEntities(`
 | |
|           SELECT parent_notes.* 
 | |
|           FROM 
 | |
|             branches AS child_tree 
 | |
|             JOIN notes AS parent_notes ON parent_notes.noteId = child_tree.parentNoteId 
 | |
|           WHERE child_tree.noteId = ?
 | |
|                 AND child_tree.isDeleted = 0
 | |
|                 AND parent_notes.isDeleted = 0`, [this.noteId]);
 | |
|     }
 | |
| 
 | |
|     /**
 | |
|      * @return {string[][]} - array of notePaths (each represented by array of noteIds constituting the particular note path)
 | |
|      */
 | |
|     getAllNotePaths() {
 | |
|         if (this.noteId === 'root') {
 | |
|             return [['root']];
 | |
|         }
 | |
| 
 | |
|         const notePaths = [];
 | |
| 
 | |
|         for (const parentNote of this.getParentNotes()) {
 | |
|             for (const parentPath of parentNote.getAllNotePaths()) {
 | |
|                 parentPath.push(this.noteId);
 | |
|                 notePaths.push(parentPath);
 | |
|             }
 | |
|         }
 | |
| 
 | |
|         return notePaths;
 | |
|     }
 | |
| 
 | |
|     getRelationDefinitions() {
 | |
|         return this.getLabels()
 | |
|             .filter(l => l.name.startsWith("relation:"));
 | |
|     }
 | |
| 
 | |
|     getLabelDefinitions() {
 | |
|         return this.getLabels()
 | |
|             .filter(l => l.name.startsWith("relation:"));
 | |
|     }
 | |
| 
 | |
|     /**
 | |
|      * @param ancestorNoteId
 | |
|      * @return {boolean} - true if ancestorNoteId occurs in at least one of the note's paths
 | |
|      */
 | |
|     isDescendantOfNote(ancestorNoteId) {
 | |
|         const notePaths = this.getAllNotePaths();
 | |
| 
 | |
|         return notePaths.some(path => path.includes(ancestorNoteId));
 | |
|     }
 | |
| 
 | |
|     beforeSaving() {
 | |
|         if (!this.isDeleted) {
 | |
|             this.isDeleted = false;
 | |
|         }
 | |
| 
 | |
|         if (!this.dateCreated) {
 | |
|             this.dateCreated = dateUtils.localNowDateTime();
 | |
|         }
 | |
| 
 | |
|         if (!this.utcDateCreated) {
 | |
|             this.utcDateCreated = dateUtils.utcNowDateTime();
 | |
|         }
 | |
| 
 | |
|         super.beforeSaving();
 | |
| 
 | |
|         this.dateModified = dateUtils.localNowDateTime();
 | |
|         this.utcDateModified = dateUtils.utcNowDateTime();
 | |
|     }
 | |
| 
 | |
|     // cannot be static!
 | |
|     updatePojo(pojo) {
 | |
|         if (pojo.isProtected) {
 | |
|             if (this.isContentAvailable) {
 | |
|                 pojo.title = protectedSessionService.encrypt(pojo.title);
 | |
|             }
 | |
|             else {
 | |
|                 // updating protected note outside of protected session means we will keep original ciphertexts
 | |
|                 delete pojo.title;
 | |
|             }
 | |
|         }
 | |
| 
 | |
|         delete pojo.isContentAvailable;
 | |
|         delete pojo.__attributeCache;
 | |
|         delete pojo.__ownedAttributeCache;
 | |
|         delete pojo.content;
 | |
|         /** zero references to contentHash, probably can be removed */
 | |
|         delete pojo.contentHash;
 | |
|     }
 | |
| }
 | |
| 
 | |
| module.exports = Note;
 | |
| </code></pre>
 | |
|         </article>
 | |
|     </section>
 | |
| 
 | |
| 
 | |
| 
 | |
| 
 | |
| </div>
 | |
| 
 | |
| <nav>
 | |
|     <h2><a href="index.html">Home</a></h2><h3>Modules</h3><ul><li><a href="module-sql.html">sql</a></li></ul><h3>Classes</h3><ul><li><a href="ApiToken.html">ApiToken</a></li><li><a href="Attribute.html">Attribute</a></li><li><a href="BackendScriptApi.html">BackendScriptApi</a></li><li><a href="Branch.html">Branch</a></li><li><a href="Entity.html">Entity</a></li><li><a href="Note.html">Note</a></li><li><a href="NoteRevision.html">NoteRevision</a></li><li><a href="Option.html">Option</a></li><li><a href="RecentNote.html">RecentNote</a></li></ul><h3><a href="global.html">Global</a></h3>
 | |
| </nav>
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| 
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| <br class="clear">
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| <footer>
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|     Documentation generated by <a href="https://github.com/jsdoc/jsdoc">JSDoc 3.6.6</a>
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