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			286 lines
		
	
	
		
			8.2 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/battribute.js</title>
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| 
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|     <h1 class="page-title">Source: becca/entities/battribute.js</h1>
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| 
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|     
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| 
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| 
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| 
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|     
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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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| 
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| const BNote = require('./bnote');
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| const AbstractBeccaEntity = require("./abstract_becca_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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| const {sanitizeAttributeName} = require("../../services/sanitize_attribute_name");
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| 
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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 AbstractBeccaEntity
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|  */
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| class BAttribute extends AbstractBeccaEntity {
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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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| 
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|     constructor(row) {
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|         super();
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| 
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|         if (!row) {
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|             return;
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|         }
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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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| 
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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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| 
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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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| 
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|         return this;
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|     }
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| 
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|     init() {
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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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| 
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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 BNote({noteId: this.noteId}));
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|         }
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| 
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|         this.becca.notes[this.noteId].ownedAttributes.push(this);
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| 
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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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| 
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|         const targetNote = this.targetNote;
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| 
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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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| 
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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 '${this.noteId}'`);
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|         }
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| 
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|         if (!this.name?.trim()) {
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|             throw new Error(`Invalid empty name in attribute '${this.attributeId}' of note '${this.noteId}'`);
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|         }
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| 
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|         if (this.type === 'relation' && !(this.value in this.becca.notes)) {
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|             throw new Error(`Cannot save relation '${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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| 
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|     get isAffectingSubtree() {
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|         return this.isInheritable
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|             || (this.type === 'relation' && ['template', 'inherit'].includes(this.name));
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|     }
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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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| 
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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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| 
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|     get note() {
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|         return this.becca.notes[this.noteId];
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|     }
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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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|     /**
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|      * @returns {BNote|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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| 
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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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| 
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|         return note;
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|     }
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| 
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|     /**
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|      * @returns {BNote|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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| 
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|         if (!this.value) {
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|             return null;
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|         }
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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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|     /**
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|      * @returns {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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| 
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|     getDefinition() {
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|         return promotedAttributeDefinitionParser.parse(this.value);
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|     }
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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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| 
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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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| 
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|     beforeSaving(opts = {}) {
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|         if (!opts.skipValidation) {
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|             this.validate();
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|         }
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| 
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|         this.name = sanitizeAttributeName(this.name);
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| 
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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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| 
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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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| 
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|         if (!this.isInheritable) {
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|             this.isInheritable = false;
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|         }
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| 
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|         this.utcDateModified = dateUtils.utcNowDateTime();
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| 
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|         super.beforeSaving();
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| 
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|         this.becca.attributes[this.attributeId] = this;
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|     }
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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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| 
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|     createClone(type, name, value, isInheritable) {
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|         return new BAttribute({
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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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| 
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| module.exports = BAttribute;
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| </code></pre>
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|         </article>
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|     </section>
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| 
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| 
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| 
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| 
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| </div>
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| 
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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="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="BNoteRevision.html">BNoteRevision</a></li><li><a href="BOption.html">BOption</a></li><li><a href="BRecentNote.html">BRecentNote</a></li><li><a href="BackendScriptApi.html">BackendScriptApi</a></li></ul>
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