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< h1 class = "page-title" > Source: entities/note.js< / h1 >
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< pre class = "prettyprint source linenums" > < code > "use strict";
const Entity = require('./entity');
const Attribute = require('./attribute');
const protectedSessionService = require('../services/protected_session');
const repository = require('../services/repository');
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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 syncTableService = require('../services/sync_table');
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const LABEL = 'label';
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const LABEL_DEFINITION = 'label-definition';
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const RELATION = 'relation';
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const RELATION_DEFINITION = 'relation-definition';
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/**
* This represents a Note which is a central object in the Trilium Notes project.
*
* @property {string} noteId - primary key
* @property {string} type - one of "text", "code", "file" or "render"
* @property {string} mime - MIME type, e.g. "text/html"
* @property {string} title - note title
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* @property {int} contentLength - length of content
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* @property {boolean} isProtected - true if note is protected
* @property {boolean} isDeleted - true if note is deleted
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* @property {boolean} isErased - true if note's content is erased after it has been deleted
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* @property {string} dateCreated - local date time (with offset)
* @property {string} dateModified - local date time (with offset)
* @property {string} utcDateCreated
* @property {string} utcDateModified
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*
* @extends Entity
*/
class Note extends Entity {
static get entityName() { return "notes"; }
static get primaryKeyName() { return "noteId"; }
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static get hashedProperties() { return ["noteId", "title", "type", "isProtected", "isDeleted"]; }
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/**
* @param row - object containing database row from "notes" table
*/
constructor(row) {
super(row);
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) */
this.isContentAvailable = true;
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// check if there's noteId, otherwise this is a new entity which wasn't encrypted yet
if (this.isProtected & & this.noteId) {
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this.isContentAvailable = protectedSessionService.isProtectedSessionAvailable();
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if (this.isContentAvailable) {
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this.title = protectedSessionService.decryptString(this.title);
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}
else {
this.title = "[protected]";
}
}
}
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/*
* Note content has quite special handling - it's not a separate entity, but a lazily loaded
* part of Note entity with it's own sync. Reasons behind this hybrid design has been:
*
* - 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
* - changes in the note metadata or title should not trigger note content sync (so we keep separate utcDateModified and sync rows)
* - 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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/** @returns {Promise< *>} */
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async getContent(silentNotFoundError = false) {
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if (this.content === undefined) {
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const res = await sql.getRow(`SELECT content, hash FROM note_contents WHERE noteId = ?`, [this.noteId]);
if (!res) {
if (silentNotFoundError) {
return undefined;
}
else {
throw new Error("Cannot find note content for noteId=" + this.noteId);
}
}
this.content = res.content;
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if (this.isProtected) {
if (this.isContentAvailable) {
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this.content = this.content === null ? null : protectedSessionService.decrypt(this.content);
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}
else {
this.content = "";
}
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}
if (this.isStringNote()) {
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this.content = this.content === null
? ""
: this.content.toString("UTF-8");
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}
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}
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return this.content;
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}
/** @returns {Promise< *>} */
async getJsonContent() {
const content = await this.getContent();
return JSON.parse(content);
}
/** @returns {Promise} */
async setContent(content) {
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if (content === null || content === undefined) {
throw new Error(`Cannot set null content to note ${this.noteId}`);
}
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// force updating note itself so that dateModified is represented correctly even for the content
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this.forcedChange = true;
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this.contentLength = content.length;
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await this.save();
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this.content = content;
const pojo = {
noteId: this.noteId,
content: content,
utcDateModified: dateUtils.utcNowDateTime(),
hash: utils.hash(this.noteId + "|" + content)
};
if (this.isProtected) {
if (this.isContentAvailable) {
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pojo.content = protectedSessionService.encrypt(pojo.content);
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}
else {
throw new Error(`Cannot update content of noteId=${this.noteId} since we're out of protected session.`);
}
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}
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await sql.upsert("note_contents", "noteId", pojo);
await syncTableService.addNoteContentSync(this.noteId);
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}
/** @returns {Promise} */
async setJsonContent(content) {
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await this.setContent(JSON.stringify(content, null, '\t'));
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}
/** @returns {boolean} true if this note is the root of the note tree. Root note has "root" noteId */
isRoot() {
return this.noteId === 'root';
}
/** @returns {boolean} true if this note is of application/json content type */
isJson() {
return this.mime === "application/json";
}
/** @returns {boolean} true if this note is JavaScript (code or attachment) */
isJavaScript() {
return (this.type === "code" || this.type === "file")
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& & (this.mime.startsWith("application/javascript")
|| this.mime === "application/x-javascript"
|| this.mime === "text/javascript");
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}
/** @returns {boolean} true if this note is HTML */
isHtml() {
return (this.type === "code" || this.type === "file" || this.type === "render") & & this.mime === "text/html";
}
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/** @returns {boolean} true if the note has string content (not binary) */
isStringNote() {
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return utils.isStringNote(this.type, this.mime);
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}
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/** @returns {string} JS script environment - either "frontend" or "backend" */
getScriptEnv() {
if (this.isHtml() || (this.isJavaScript() & & this.mime.endsWith('env=frontend'))) {
return "frontend";
}
if (this.type === 'render') {
return "frontend";
}
if (this.isJavaScript() & & this.mime.endsWith('env=backend')) {
return "backend";
}
return null;
}
/**
* @returns {Promise< Attribute[]>} attributes belonging to this specific note (excludes inherited attributes)
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*
* This method can be significantly faster than the getAttributes()
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*/
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async getOwnedAttributes(type, name) {
let query = `SELECT * FROM attributes WHERE isDeleted = 0 AND noteId = ?`;
const params = [this.noteId];
if (type) {
query += ` AND type = ?`;
params.push(type);
}
if (name) {
query += ` AND name = ?`;
params.push(name);
}
return await repository.getEntities(query, params);
}
/**
* @returns {Promise< Attribute>} attribute belonging to this specific note (excludes inherited attributes)
*
* This method can be significantly faster than the getAttribute()
*/
async getOwnedAttribute(type, name) {
const attrs = await this.getOwnedAttributes(type, name);
return attrs.length > 0 ? attrs[0] : null;
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}
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/**
* @returns {Promise< Attribute[]>} relations targetting this specific note
*/
async getTargetRelations() {
return await repository.getEntities("SELECT * FROM attributes WHERE type = 'relation' AND isDeleted = 0 AND value = ?", [this.noteId]);
}
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/**
* @param {string} [name] - attribute name to filter
* @returns {Promise< Attribute[]>} all note's attributes, including inherited ones
*/
async getAttributes(name) {
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if (!this.__attributeCache) {
await this.loadAttributesToCache();
}
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if (name) {
return this.__attributeCache.filter(attr => attr.name === name);
}
else {
return this.__attributeCache;
}
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}
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/**
* @param {string} [name] - label name to filter
* @returns {Promise< Attribute[]>} all note's labels (attributes with type label), including inherited ones
*/
async getLabels(name) {
return (await this.getAttributes(name)).filter(attr => attr.type === LABEL);
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}
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/**
* @param {string} [name] - label name to filter
* @returns {Promise< Attribute[]>} all note's label definitions, including inherited ones
*/
async getLabelDefinitions(name) {
return (await this.getAttributes(name)).filter(attr => attr.type === LABEL_DEFINITION);
}
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/**
* @param {string} [name] - relation name to filter
* @returns {Promise< Attribute[]>} all note's relations (attributes with type relation), including inherited ones
*/
async getRelations(name) {
return (await this.getAttributes(name)).filter(attr => attr.type === RELATION);
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}
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/**
* @param {string} [name] - relation name to filter
* @returns {Promise< Note[]>}
*/
async getRelationTargets(name) {
const relations = await this.getRelations(name);
const targets = [];
for (const relation of relations) {
targets.push(await relation.getTargetNote());
}
return targets;
}
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/**
* @param {string} [name] - relation name to filter
* @returns {Promise< Attribute[]>} all note's relation definitions including inherited ones
*/
async getRelationDefinitions(name) {
return (await this.getAttributes(name)).filter(attr => attr.type === RELATION_DEFINITION);
}
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/**
* Clear note's attributes cache to force fresh reload for next attribute request.
* Cache is note instance scoped.
*/
invalidateAttributeCache() {
this.__attributeCache = null;
}
/** @returns {Promise< void>} */
async loadAttributesToCache() {
const attributes = await repository.getEntities(`
WITH RECURSIVE
tree(noteId, level) AS (
SELECT ?, 0
UNION
SELECT branches.parentNoteId, tree.level + 1 FROM branches
JOIN tree ON branches.noteId = tree.noteId
JOIN notes ON notes.noteId = branches.parentNoteId
WHERE notes.isDeleted = 0
AND branches.isDeleted = 0
),
treeWithAttrs(noteId, level) AS (
SELECT * FROM tree
UNION
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SELECT attributes.value, treeWithAttrs.level FROM attributes
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JOIN treeWithAttrs ON treeWithAttrs.noteId = attributes.noteId
WHERE attributes.isDeleted = 0
AND attributes.type = 'relation'
AND attributes.name = 'template'
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AND (treeWithAttrs.level = 0 OR attributes.isInheritable = 1)
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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)
ORDER BY level, noteId, position`, [this.noteId]);
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// attributes are ordered so that "closest" attributes are first
// we order by noteId so that attributes from same note stay together. Actual noteId ordering doesn't matter.
const filteredAttributes = attributes.filter((attr, index) => {
if (attr.isDefinition()) {
const firstDefinitionIndex = attributes.findIndex(el => el.type === attr.type & & el.name === attr.name);
// keep only if this element is the first definition for this type & name
return firstDefinitionIndex === index;
}
else {
const definitionAttr = attributes.find(el => el.type === attr.type + '-definition' & & el.name === attr.name);
if (!definitionAttr) {
return true;
}
const definition = definitionAttr.value;
if (definition.multiplicityType === 'multivalue') {
return true;
}
else {
const firstAttrIndex = attributes.findIndex(el => el.type === attr.type & & el.name === attr.name);
// in case of single-valued attribute we'll keep it only if it's first (closest)
return firstAttrIndex === index;
}
}
});
for (const attr of filteredAttributes) {
attr.isOwned = attr.noteId === this.noteId;
}
this.__attributeCache = filteredAttributes;
}
/**
* @param {string} type - attribute type (label, relation, etc.)
* @param {string} name - attribute name
* @returns {Promise< boolean>} true if note has an attribute with given type and name (including inherited)
*/
async hasAttribute(type, name) {
return !!await this.getAttribute(type, name);
}
/**
* @param {string} type - attribute type (label, relation, etc.)
* @param {string} name - attribute name
* @returns {Promise< 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.
*/
async getAttribute(type, name) {
const attributes = await this.getAttributes();
return attributes.find(attr => attr.type === type & & attr.name === name);
}
/**
* @param {string} type - attribute type (label, relation, etc.)
* @param {string} name - attribute name
* @returns {Promise< string>} attribute value of given type and name or null if no such attribute exists.
*/
async getAttributeValue(type, name) {
const attr = await this.getAttribute(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)
* @returns {Promise< void>}
*/
async toggleAttribute(type, enabled, name, value) {
if (enabled) {
await this.setAttribute(type, name, value);
}
else {
await this.removeAttribute(type, name, value);
}
}
/**
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* Update's given attribute's value or creates it if it doesn't exist
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*
* @param {string} type - attribute type (label, relation, etc.)
* @param {string} name - attribute name
* @param {string} [value] - attribute value (optional)
* @returns {Promise< void>}
*/
async setAttribute(type, name, value) {
const attributes = await this.getOwnedAttributes();
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let attr = attributes.find(attr => attr.type === type & & attr.name === name);
if (attr) {
if (attr.value !== value) {
attr.value = value;
await attr.save();
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this.invalidateAttributeCache();
}
}
else {
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attr = new Attribute({
noteId: this.noteId,
type: type,
name: name,
value: value !== undefined ? value : ""
});
await 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)
* @returns {Promise< void>}
*/
async removeAttribute(type, name, value) {
const attributes = await this.getOwnedAttributes();
for (const attribute of attributes) {
if (attribute.type === type & & (value === undefined || value === attribute.value)) {
attribute.isDeleted = true;
await attribute.save();
this.invalidateAttributeCache();
}
}
}
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/**
* @return {Promise< Attribute>}
*/
async addAttribute(type, name, value = "") {
const attr = new Attribute({
noteId: this.noteId,
type: type,
name: name,
value: value
});
await attr.save();
this.invalidateAttributeCache();
return attr;
}
async addLabel(name, value = "") {
return await this.addAttribute(LABEL, name, value);
}
async addRelation(name, targetNoteId) {
return await this.addAttribute(RELATION, name, targetNoteId);
}
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/**
* @param {string} name - label name
* @returns {Promise< boolean>} true if label exists (including inherited)
*/
async hasLabel(name) { return await this.hasAttribute(LABEL, name); }
/**
* @param {string} name - relation name
* @returns {Promise< boolean>} true if relation exists (including inherited)
*/
async hasRelation(name) { return await this.hasAttribute(RELATION, name); }
/**
* @param {string} name - label name
* @returns {Promise< Attribute>} label if it exists, null otherwise
*/
async getLabel(name) { return await this.getAttribute(LABEL, name); }
/**
* @param {string} name - relation name
* @returns {Promise< Attribute>} relation if it exists, null otherwise
*/
async getRelation(name) { return await this.getAttribute(RELATION, name); }
/**
* @param {string} name - label name
* @returns {Promise< string>} label value if label exists, null otherwise
*/
async getLabelValue(name) { return await this.getAttributeValue(LABEL, name); }
/**
* @param {string} name - relation name
* @returns {Promise< string>} relation value if relation exists, null otherwise
*/
async getRelationValue(name) { return await this.getAttributeValue(RELATION, name); }
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/**
* @param {string} name
* @returns {Promise< Note>|null} target note of the relation or null (if target is empty or note was not found)
*/
async getRelationTarget(name) {
const relation = await this.getRelation(name);
return relation ? await repository.getNote(relation.value) : null;
}
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/**
* 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)
* @returns {Promise< void>}
*/
async toggleLabel(enabled, name, value) { return await 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)
* @returns {Promise< void>}
*/
async toggleRelation(enabled, name, value) { return await this.toggleAttribute(RELATION, enabled, name, value); }
/**
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* Update's given label's value or creates it if it doesn't exist
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*
* @param {string} name - label name
* @param {string} [value] - label value
* @returns {Promise< void>}
*/
async setLabel(name, value) { return await this.setAttribute(LABEL, name, value); }
/**
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* Update's given relation's value or creates it if it doesn't exist
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*
* @param {string} name - relation name
* @param {string} [value] - relation value (noteId)
* @returns {Promise< void>}
*/
async setRelation(name, value) { return await this.setAttribute(RELATION, name, value); }
/**
* Remove label name-value pair, if it exists.
*
* @param {string} name - label name
* @param {string} [value] - label value
* @returns {Promise< void>}
*/
async removeLabel(name, value) { return await this.removeAttribute(LABEL, name, value); }
/**
* Remove relation name-value pair, if it exists.
*
* @param {string} name - relation name
* @param {string} [value] - relation value (noteId)
* @returns {Promise< void>}
*/
async removeRelation(name, value) { return await this.removeAttribute(RELATION, name, value); }
/**
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* @return {Promise< 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
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*/
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async getDescendantNoteIds() {
return await 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]);
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}
/**
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* Finds descendant notes with given attribute name and value. Only own attributes are considered, not inherited ones
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*
* @param {string} type - attribute type (label, relation, etc.)
* @param {string} name - attribute name
* @param {string} [value] - attribute value
* @returns {Promise< Note[]>}
*/
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async getDescendantNotesWithAttribute(type, name, value) {
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const params = [this.noteId, name];
let valueCondition = "";
if (value !== undefined) {
params.push(value);
valueCondition = " AND attributes.value = ?";
}
const notes = await 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;
}
/**
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* Finds descendant notes with given label name and value. Only own labels are considered, not inherited ones
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*
* @param {string} name - label name
* @param {string} [value] - label value
* @returns {Promise< Note[]>}
*/
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async getDescendantNotesWithLabel(name, value) { return await this.getDescendantNotesWithAttribute(LABEL, name, value); }
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/**
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* Finds descendant notes with given relation name and value. Only own relations are considered, not inherited ones
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*
* @param {string} name - relation name
* @param {string} [value] - relation value
* @returns {Promise< Note[]>}
*/
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async getDescendantNotesWithRelation(name, value) { return await this.getDescendantNotesWithAttribute(RELATION, name, value); }
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/**
* Returns note revisions of this note.
*
* @returns {Promise< NoteRevision[]>}
*/
async getRevisions() {
return await repository.getEntities("SELECT * FROM note_revisions WHERE noteId = ?", [this.noteId]);
}
/**
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* Get list of links coming out of this note.
*
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* @deprecated - not intended for general use
* @returns {Promise< Attribute[]>}
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*/
async getLinks() {
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return await repository.getEntities(`
SELECT *
FROM attributes
WHERE noteId = ? AND
isDeleted = 0 AND
type = 'relation' AND
name IN ('internal-link', 'image-link', 'relation-map-link')`, [this.noteId]);
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}
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/**
* @returns {Promise< Branch[]>}
*/
async getBranches() {
return await repository.getEntities("SELECT * FROM branches WHERE isDeleted = 0 AND noteId = ?", [this.noteId]);
}
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/**
* @returns {boolean} - true if note has children
*/
async hasChildren() {
return (await this.getChildNotes()).length > 0;
}
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/**
* @returns {Promise< Note[]>} child notes of this note
*/
async getChildNotes() {
return await 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 {Promise< Branch[]>} child branches of this note
*/
async getChildBranches() {
return await repository.getEntities(`
SELECT branches.*
FROM branches
WHERE branches.isDeleted = 0
AND branches.parentNoteId = ?
ORDER BY branches.notePosition`, [this.noteId]);
}
/**
* @returns {Promise< Note[]>} parent notes of this note (note can have multiple parents because of cloning)
*/
async getParentNotes() {
return await 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]);
}
beforeSaving() {
if (!this.isDeleted) {
this.isDeleted = false;
}
if (!this.dateCreated) {
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this.dateCreated = dateUtils.localNowDateTime();
}
if (!this.utcDateCreated) {
this.utcDateCreated = dateUtils.utcNowDateTime();
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}
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if (this.contentLength === undefined) {
this.contentLength = -1;
}
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super.beforeSaving();
if (this.isChanged) {
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this.dateModified = dateUtils.localNowDateTime();
this.utcDateModified = dateUtils.utcNowDateTime();
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}
}
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// cannot be static!
updatePojo(pojo) {
if (pojo.isProtected) {
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if (this.isContentAvailable) {
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pojo.title = protectedSessionService.encrypt(pojo.title);
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}
else {
// 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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}
delete pojo.isContentAvailable;
delete pojo.__attributeCache;
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delete pojo.content;
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delete pojo.contentHash;
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}
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}
module.exports = Note;< / code > < / pre >
< / article >
< / section >
< / div >
< nav >
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< h2 > < a href = "index.html" > Home< / a > < / h2 > < 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 >
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< / nav >
< br class = "clear" >
< footer >
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Documentation generated by < a href = "https://github.com/jsdoc/jsdoc" > JSDoc 3.6.3< / a >
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< / footer >
< script > prettyPrint ( ) ; < / script >
< script src = "scripts/linenumber.js" > < / script >
< / body >
< / html >
