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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');
const dateUtils = require('../services/date_utils');
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
* @property {string} content - note content - e.g. HTML text for text notes, file payload for files
* @property {boolean} isProtected - true if note is protected
* @property {boolean} isDeleted - true if note is deleted
* @property {string} dateCreated
* @property {string} dateModified
*
* @extends Entity
*/
class Note extends Entity {
static get entityName() { return "notes"; }
static get primaryKeyName() { return "noteId"; }
static get hashedProperties() { return ["noteId", "title", "content", "type", "isProtected", "isDeleted"]; }
/**
* @param row - object containing database row from "notes" table
*/
constructor(row) {
super(row);
this.isProtected = !!this.isProtected;
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/* true if content (meaning any kind of potentially encrypted content) is either not encrypted
* 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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protectedSessionService.decryptNote(this);
}
this.setContent(this.content);
}
setContent(content) {
this.content = content;
try {
this.jsonContent = JSON.parse(this.content);
}
catch(e) {}
}
/** @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")
& & (this.mime.startsWith("application/javascript") || this.mime === "application/x-javascript");
}
/** @returns {boolean} true if this note is HTML */
isHtml() {
return (this.type === "code" || this.type === "file" || this.type === "render") & & this.mime === "text/html";
}
/** @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)
*/
async getOwnedAttributes() {
return await repository.getEntities(`SELECT * FROM attributes WHERE isDeleted = 0 AND noteId = ?`, [this.noteId]);
}
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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< 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
SELECT attributes.value, treeWithAttrs.level + 1 FROM attributes
JOIN treeWithAttrs ON treeWithAttrs.noteId = attributes.noteId
WHERE attributes.isDeleted = 0
AND attributes.type = 'relation'
AND attributes.name = 'template'
AND (attributes.noteId = ? OR attributes.isInheritable = 1)
)
SELECT attributes.* FROM attributes JOIN treeWithAttrs ON attributes.noteId = treeWithAttrs.noteId
WHERE attributes.isDeleted = 0 AND (attributes.isInheritable = 1 OR attributes.noteId = ?)
ORDER BY level, noteId, position`, [this.noteId, this.noteId, this.noteId]);
// 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);
}
}
/**
* Creates given attribute name-value pair if it doesn't exist.
*
* @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();
let attr = attributes.find(attr => attr.type === type & & (value === undefined || attr.value === value));
if (!attr) {
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();
}
}
}
/**
* @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); }
/**
* 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); }
/**
* Create label name-value pair if it doesn't exist yet.
*
* @param {string} name - label name
* @param {string} [value] - label value
* @returns {Promise< void>}
*/
async setLabel(name, value) { return await this.setAttribute(LABEL, name, value); }
/**
* Create relation name-value pair if it doesn't exist yet.
*
* @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); }
/**
* @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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* Finds child 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 findChildNotesWithAttribute(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;
}
/**
* Finds 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 {Promise< Note[]>}
*/
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async findChildNotesWithLabel(name, value) { return await this.findChildNotesWithAttribute(LABEL, name, value); }
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/**
* Finds 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 {Promise< Note[]>}
*/
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async findChildNotesWithRelation(name, value) { return await this.findChildNotesWithAttribute(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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* @returns {Promise< Link[]>}
*/
async getLinks() {
return await repository.getEntities("SELECT * FROM links WHERE noteId = ? AND isDeleted = 0", [this.noteId]);
}
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/**
* Get list of links targetting this note.
*
* @returns {Promise< Link[]>}
*/
async getTargetLinks() {
return await repository.getEntities("SELECT * FROM links WHERE targetNoteId = ? AND isDeleted = 0", [this.noteId]);
}
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/**
* Return all links from this note, including deleted ones.
*
* @returns {Promise< Link[]>}
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*/
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async getLinksWithDeleted() {
return await repository.getEntities("SELECT * FROM links WHERE noteId = ?", [this.noteId]);
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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.isJson() & & this.jsonContent) {
this.content = JSON.stringify(this.jsonContent, null, '\t');
}
// we do this here because encryption needs the note ID for the IV
this.generateIdIfNecessary();
if (this.isProtected) {
protectedSessionService.encryptNote(this);
}
if (!this.isDeleted) {
this.isDeleted = false;
}
if (!this.dateCreated) {
this.dateCreated = dateUtils.nowDate();
}
super.beforeSaving();
if (this.isChanged) {
this.dateModified = dateUtils.nowDate();
}
}
}
module.exports = Note;< / code > < / pre >
< / article >
< / section >
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< 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 = "Link.html" > Link< / 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/jsdoc3/jsdoc" > JSDoc 3.5.5< / a > on Thu Nov 15 2018 13:33:27 GMT+0100 (Central European Standard Time)
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< script src = "scripts/linenumber.js" > < / script >
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