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295 lines
9.6 KiB
HTML
295 lines
9.6 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: becca/entities/battachment.js</title>
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<h1 class="page-title">Source: becca/entities/battachment.js</h1>
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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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const utils = require('../../services/utils');
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const dateUtils = require('../../services/date_utils');
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const AbstractBeccaEntity = require("./abstract_becca_entity");
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const sql = require("../../services/sql");
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const protectedSessionService = require("../../services/protected_session");
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const log = require("../../services/log");
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const attachmentRoleToNoteTypeMapping = {
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'image': 'image'
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};
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/**
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* Attachment represent data related/attached to the note. Conceptually similar to attributes, but intended for
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* larger amounts of data and generally not accessible to the user.
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*
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* @extends AbstractBeccaEntity
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*/
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class BAttachment extends AbstractBeccaEntity {
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static get entityName() { return "attachments"; }
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static get primaryKeyName() { return "attachmentId"; }
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static get hashedProperties() { return ["attachmentId", "ownerId", "role", "mime", "title", "blobId", "utcDateScheduledForErasureSince"]; }
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constructor(row) {
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super();
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if (!row.ownerId?.trim()) {
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throw new Error("'ownerId' must be given to initialize a Attachment entity");
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} else if (!row.role?.trim()) {
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throw new Error("'role' must be given to initialize a Attachment entity");
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} else if (!row.mime?.trim()) {
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throw new Error("'mime' must be given to initialize a Attachment entity");
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} else if (!row.title?.trim()) {
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throw new Error("'title' must be given to initialize a Attachment entity");
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}
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/** @type {string} */
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this.attachmentId = row.attachmentId;
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/**
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* either noteId or revisionId to which this attachment belongs
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* @type {string}
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*/
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this.ownerId = row.ownerId;
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/** @type {string} */
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this.role = row.role;
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/** @type {string} */
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this.mime = row.mime;
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/** @type {string} */
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this.title = row.title;
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/** @type {int} */
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this.position = row.position;
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/** @type {string} */
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this.blobId = row.blobId;
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/** @type {boolean} */
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this.isProtected = !!row.isProtected;
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/** @type {string} */
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this.dateModified = row.dateModified;
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/** @type {string} */
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this.utcDateModified = row.utcDateModified;
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/** @type {string} */
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this.utcDateScheduledForErasureSince = row.utcDateScheduledForErasureSince;
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/**
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* optionally added to the entity
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* @type {int}
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*/
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this.contentLength = row.contentLength;
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this.decrypt();
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}
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/** @returns {BAttachment} */
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copy() {
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return new BAttachment({
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ownerId: this.ownerId,
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role: this.role,
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mime: this.mime,
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title: this.title,
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blobId: this.blobId,
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isProtected: this.isProtected
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});
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}
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/** @returns {BNote} */
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getNote() {
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return this.becca.notes[this.ownerId];
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}
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/** @returns {boolean} true if the note has string content (not binary) */
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hasStringContent() {
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return utils.isStringNote(this.type, this.mime);
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}
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isContentAvailable() {
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return !this.attachmentId // new attachment which was not encrypted yet
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|| !this.isProtected
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|| protectedSessionService.isProtectedSessionAvailable()
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}
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getTitleOrProtected() {
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return this.isContentAvailable() ? this.title : '[protected]';
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}
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decrypt() {
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if (!this.isProtected || !this.attachmentId) {
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this.isDecrypted = true;
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return;
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}
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if (!this.isDecrypted && protectedSessionService.isProtectedSessionAvailable()) {
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try {
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this.title = protectedSessionService.decryptString(this.title);
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this.isDecrypted = true;
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}
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catch (e) {
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log.error(`Could not decrypt attachment ${this.attachmentId}: ${e.message} ${e.stack}`);
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}
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}
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}
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/** @returns {string|Buffer} */
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getContent() {
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return this._getContent();
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}
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/**
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* @param content
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* @param {object} [opts]
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* @param {object} [opts.forceSave=false] - will also save this BAttachment entity
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* @param {object} [opts.forceFrontendReload=false] - override frontend heuristics on when to reload, instruct to reload
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*/
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setContent(content, opts) {
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this._setContent(content, opts);
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}
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/** @returns {{note: BNote, branch: BBranch}} */
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convertToNote() {
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if (this.type === 'search') {
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throw new Error(`Note of type search cannot have child notes`);
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}
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if (!this.getNote()) {
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throw new Error("Cannot find note of this attachment. It is possible that this is note revision's attachment. " +
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"Converting note revision's attachments to note is not (yet) supported.");
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}
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if (!(this.role in attachmentRoleToNoteTypeMapping)) {
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throw new Error(`Mapping from attachment role '${this.role}' to note's type is not defined`);
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}
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if (!this.isContentAvailable()) { // isProtected is the same for attachment
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throw new Error(`Cannot convert protected attachment outside of protected session`);
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}
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const noteService = require('../../services/notes');
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const { note, branch } = noteService.createNewNote({
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parentNoteId: this.ownerId,
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title: this.title,
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type: attachmentRoleToNoteTypeMapping[this.role],
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mime: this.mime,
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content: this.getContent(),
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isProtected: this.isProtected
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});
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this.markAsDeleted();
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const parentNote = this.getNote();
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if (this.role === 'image' && parentNote.type === 'text') {
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const origContent = parentNote.getContent();
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const oldAttachmentUrl = `api/attachments/${this.attachmentId}/image/`;
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const newNoteUrl = `api/images/${note.noteId}/`;
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const fixedContent = utils.replaceAll(origContent, oldAttachmentUrl, newNoteUrl);
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if (fixedContent !== origContent) {
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parentNote.setContent(fixedContent);
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}
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noteService.asyncPostProcessContent(note, fixedContent);
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}
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return { note, branch };
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}
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getFileName() {
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const type = this.role === 'image' ? 'image' : 'file';
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return utils.formatDownloadTitle(this.title, type, this.mime);
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}
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beforeSaving() {
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super.beforeSaving();
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if (this.position === undefined || this.position === null) {
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this.position = 10 + sql.getValue(`SELECT COALESCE(MAX(position), 0)
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FROM attachments
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WHERE ownerId = ?`, [this.noteId]);
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}
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this.dateModified = dateUtils.localNowDateTime();
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this.utcDateModified = dateUtils.utcNowDateTime();
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}
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getPojo() {
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return {
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attachmentId: this.attachmentId,
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ownerId: this.ownerId,
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role: this.role,
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mime: this.mime,
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title: this.title,
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position: this.position,
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blobId: this.blobId,
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isProtected: !!this.isProtected,
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isDeleted: false,
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dateModified: this.dateModified,
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utcDateModified: this.utcDateModified,
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utcDateScheduledForErasureSince: this.utcDateScheduledForErasureSince,
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contentLength: this.contentLength
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};
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}
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getPojoToSave() {
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const pojo = this.getPojo();
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delete pojo.contentLength;
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if (pojo.isProtected) {
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if (this.isDecrypted) {
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pojo.title = protectedSessionService.encrypt(pojo.title);
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}
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else {
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// updating protected note outside of protected session means we will keep original ciphertexts
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delete pojo.title;
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}
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}
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return pojo;
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}
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}
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module.exports = BAttachment;
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</code></pre>
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</article>
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</section>
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</div>
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<nav>
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<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="AbstractBeccaEntity.html">AbstractBeccaEntity</a></li><li><a href="BAttachment.html">BAttachment</a></li><li><a href="BAttribute.html">BAttribute</a></li><li><a href="BBranch.html">BBranch</a></li><li><a href="BEtapiToken.html">BEtapiToken</a></li><li><a href="BNote.html">BNote</a></li><li><a href="BOption.html">BOption</a></li><li><a href="BRecentNote.html">BRecentNote</a></li><li><a href="BRevision.html">BRevision</a></li><li><a href="BackendScriptApi.html">BackendScriptApi</a></li></ul><h3>Global</h3><ul><li><a href="global.html#api">api</a></li></ul>
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