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<h1 class="page-title">Source: entities/attribute.js</h1>
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<pre class="prettyprint source linenums"><code>"use strict";
const Entity = require('./entity');
const repository = require('../services/repository');
const dateUtils = require('../services/date_utils');
const sql = require('../services/sql');
/**
* Attribute is key value pair owned by a note.
*
* @param {string} attributeId
* @param {string} noteId
* @param {string} type
* @param {string} name
* @param {string} value
* @param {int} position
* @param {boolean} isInheritable
* @param {boolean} isDeleted
* @param {string} utcDateCreated
* @param {string} utcDateModified
*
* @extends Entity
*/
class Attribute extends Entity {
static get entityName() { return "attributes"; }
static get primaryKeyName() { return "attributeId"; }
static get hashedProperties() { return ["attributeId", "noteId", "type", "name", "value", "isInheritable", "isDeleted", "utcDateCreated"]; }
constructor(row) {
super(row);
this.isInheritable = !!this.isInheritable;
if (this.isDefinition()) {
try {
this.value = JSON.parse(this.value);
}
catch (e) {
}
}
}
/**
* @returns {Promise<Note|null>}
*/
async getNote() {
if (!this.__note) {
this.__note = await repository.getEntity("SELECT * FROM notes WHERE noteId = ?", [this.noteId]);
}
return this.__note;
}
/**
* @returns {Promise<Note|null>}
*/
async getTargetNote() {
if (this.type !== 'relation') {
throw new Error(`Attribute ${this.attributeId} is not relation`);
}
if (!this.value) {
return null;
}
if (!this.__targetNote) {
this.__targetNote = await repository.getEntity("SELECT * FROM notes WHERE noteId = ?", [this.value]);
}
return this.__targetNote;
}
/**
* @return {boolean}
*/
isDefinition() {
return this.type === 'label-definition' || this.type === 'relation-definition';
}
async beforeSaving() {
if (!this.value) {
// null value isn't allowed
this.value = "";
}
if (this.position === undefined) {
this.position = 1 + await sql.getValue(`SELECT COALESCE(MAX(position), 0) FROM attributes WHERE noteId = ?`, [this.noteId]);
}
if (!this.isInheritable) {
this.isInheritable = false;
}
if (!this.isDeleted) {
this.isDeleted = false;
}
if (!this.utcDateCreated) {
this.utcDateCreated = dateUtils.utcNowDateTime();
}
super.beforeSaving();
if (this.isChanged) {
this.utcDateModified = dateUtils.utcNowDateTime();
}
}
// cannot be static!
updatePojo(pojo) {
delete pojo.isOwned;
}
}
module.exports = Attribute;</code></pre>
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