2021-09-30 18:26:13 +08:00
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<title>JSDoc: Source: becca/entities/attribute.js</title>
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<h1 class="page-title">Source: becca/entities/attribute.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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2022-01-11 02:54:38 +08:00
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const Note = require('./note');
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const AbstractEntity = require("./abstract_entity");
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const sql = require("../../services/sql");
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const dateUtils = require("../../services/date_utils");
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const promotedAttributeDefinitionParser = require("../../services/promoted_attribute_definition_parser");
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2021-11-11 04:30:54 +08:00
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/**
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* Attribute is an abstract concept which has two real uses - label (key - value pair)
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* and relation (representing named relationship between source and target note)
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*
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* @extends AbstractEntity
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*/
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class Attribute extends AbstractEntity {
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static get entityName() { return "attributes"; }
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static get primaryKeyName() { return "attributeId"; }
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static get hashedProperties() { return ["attributeId", "noteId", "type", "name", "value", "isInheritable"]; }
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constructor(row) {
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super();
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if (!row) {
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return;
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}
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this.updateFromRow(row);
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this.init();
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}
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updateFromRow(row) {
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this.update([
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row.attributeId,
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row.noteId,
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row.type,
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row.name,
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row.value,
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row.isInheritable,
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row.position,
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row.utcDateModified
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]);
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}
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update([attributeId, noteId, type, name, value, isInheritable, position, utcDateModified]) {
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/** @type {string} */
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this.attributeId = attributeId;
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/** @type {string} */
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this.noteId = noteId;
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/** @type {string} */
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this.type = type;
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/** @type {string} */
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this.name = name;
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/** @type {int} */
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this.position = position;
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/** @type {string} */
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this.value = value || "";
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/** @type {boolean} */
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this.isInheritable = !!isInheritable;
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/** @type {string} */
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this.utcDateModified = utcDateModified;
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return this;
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}
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init() {
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this.validate();
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if (this.attributeId) {
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this.becca.attributes[this.attributeId] = this;
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}
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if (!(this.noteId in this.becca.notes)) {
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// entities can come out of order in sync, create skeleton which will be filled later
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this.becca.addNote(this.noteId, new Note({noteId: this.noteId}));
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}
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this.becca.notes[this.noteId].ownedAttributes.push(this);
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const key = `${this.type}-${this.name.toLowerCase()}`;
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this.becca.attributeIndex[key] = this.becca.attributeIndex[key] || [];
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this.becca.attributeIndex[key].push(this);
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const targetNote = this.targetNote;
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if (targetNote) {
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targetNote.targetRelations.push(this);
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}
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}
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validate() {
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if (!["label", "relation"].includes(this.type)) {
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throw new Error(`Invalid attribute type '${this.type}' in attribute '${this.attributeId}' of note '${this.noteId}'`);
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}
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if (!this.name?.trim()) {
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throw new Error(`Invalid empty name in attribute '${this.attributeId}' of note '${this.noteId}'`);
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}
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if (this.type === 'relation' && !(this.value in this.becca.notes)) {
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throw new Error(`Cannot save relation '${this.name}' of note '${this.noteId}' since it target not existing note '${this.value}'.`);
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}
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}
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get isAffectingSubtree() {
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return this.isInheritable
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|| (this.type === 'relation' && this.name === 'template');
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}
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get targetNoteId() { // alias
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return this.type === 'relation' ? this.value : undefined;
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}
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isAutoLink() {
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return this.type === 'relation' && ['internalLink', 'imageLink', 'relationMapLink', 'includeNoteLink'].includes(this.name);
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}
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get note() {
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return this.becca.notes[this.noteId];
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}
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get targetNote() {
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if (this.type === 'relation') {
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return this.becca.notes[this.value];
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}
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}
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/**
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* @returns {Note|null}
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*/
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getNote() {
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const note = this.becca.getNote(this.noteId);
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if (!note) {
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throw new Error(`Note '${this.noteId}' of attribute '${this.attributeId}', type '${this.type}', name '${this.name}' does not exist.`);
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}
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return note;
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}
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/**
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* @returns {Note|null}
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*/
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getTargetNote() {
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if (this.type !== 'relation') {
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throw new Error(`Attribute ${this.attributeId} is not relation`);
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}
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if (!this.value) {
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return null;
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}
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return this.becca.getNote(this.value);
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}
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/**
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* @return {boolean}
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*/
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isDefinition() {
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return this.type === 'label' && (this.name.startsWith('label:') || this.name.startsWith('relation:'));
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}
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getDefinition() {
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return promotedAttributeDefinitionParser.parse(this.value);
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}
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getDefinedName() {
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if (this.type === 'label' && this.name.startsWith('label:')) {
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return this.name.substr(6);
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} else if (this.type === 'label' && this.name.startsWith('relation:')) {
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return this.name.substr(9);
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} else {
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return this.name;
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}
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}
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get isDeleted() {
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return !(this.attributeId in this.becca.attributes);
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}
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beforeSaving() {
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this.validate();
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if (!this.value) {
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// null value isn't allowed
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this.value = "";
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}
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if (this.position === undefined) {
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// TODO: can be calculated from becca
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this.position = 1 + sql.getValue(`SELECT COALESCE(MAX(position), 0) FROM attributes WHERE noteId = ?`, [this.noteId]);
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}
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if (!this.isInheritable) {
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this.isInheritable = false;
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}
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this.utcDateModified = dateUtils.utcNowDateTime();
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super.beforeSaving();
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this.becca.attributes[this.attributeId] = this;
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}
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getPojo() {
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return {
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attributeId: this.attributeId,
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noteId: this.noteId,
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type: this.type,
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name: this.name,
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position: this.position,
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value: this.value,
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isInheritable: this.isInheritable,
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utcDateModified: this.utcDateModified,
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isDeleted: false
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};
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}
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createClone(type, name, value, isInheritable) {
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return new Attribute({
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noteId: this.noteId,
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type: type,
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name: name,
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value: value,
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position: this.position,
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isInheritable: isInheritable,
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utcDateModified: this.utcDateModified
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});
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}
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}
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module.exports = Attribute;
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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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2022-04-16 06:17:32 +08:00
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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="AbstractEntity.html">AbstractEntity</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="EtapiToken.html">EtapiToken</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>
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<br class="clear">
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<footer>
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2022-11-08 04:26:13 +08:00
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Documentation generated by <a href="https://github.com/jsdoc/jsdoc">JSDoc 4.0.0</a>
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2021-09-30 18:26:13 +08:00
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