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< h1 class = "page-title" > Source: entities/note_short.js< / h1 >
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< pre class = "prettyprint source linenums" > < code > import server from '../services/server.js';
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import Attribute from './attribute.js';
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const LABEL = 'label';
const LABEL_DEFINITION = 'label-definition';
const RELATION = 'relation';
const RELATION_DEFINITION = 'relation-definition';
/**
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* FIXME: rethink how attributes are cached in Note entities since they are long lived inside the cache.
* Attribute cache should be limited to "transaction".
*
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* This note's representation is used in note tree and is kept in TreeCache.
*/
class NoteShort {
constructor(treeCache, row) {
this.treeCache = treeCache;
/** @param {string} */
this.noteId = row.noteId;
/** @param {string} */
this.title = row.title;
/** @param {boolean} */
this.isProtected = row.isProtected;
/** @param {string} one of 'text', 'code', 'file' or 'render' */
this.type = row.type;
/** @param {string} content-type, e.g. "application/json" */
this.mime = row.mime;
/** @param {boolean} */
this.archived = row.archived;
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/** @param {string} */
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this.cssClass = row.cssClass;
}
/** @returns {boolean} */
isJson() {
return this.mime === "application/json";
}
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async getContent() {
// we're not caching content since these objects are in treeCache and as such pretty long lived
const note = await server.get("notes/" + this.noteId);
return note.content;
}
async getJsonContent() {
const content = await this.getContent();
try {
return JSON.parse(content);
}
catch (e) {
console.log(`Cannot parse content of note ${this.noteId}: `, e.message);
return null;
}
}
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/** @returns {Promise< Branch[]>} */
async getBranches() {
const branchIds = this.treeCache.parents[this.noteId].map(
parentNoteId => this.treeCache.getBranchIdByChildParent(this.noteId, parentNoteId));
return this.treeCache.getBranches(branchIds);
}
/** @returns {boolean} */
hasChildren() {
return this.treeCache.children[this.noteId]
& & this.treeCache.children[this.noteId].length > 0;
}
/** @returns {Promise< Branch[]>} */
async getChildBranches() {
if (!this.treeCache.children[this.noteId]) {
return [];
}
const branchIds = this.treeCache.children[this.noteId].map(
childNoteId => this.treeCache.getBranchIdByChildParent(childNoteId, this.noteId));
return await this.treeCache.getBranches(branchIds);
}
/** @returns {string[]} */
getParentNoteIds() {
return this.treeCache.parents[this.noteId] || [];
}
/** @returns {Promise< NoteShort[]>} */
async getParentNotes() {
return await this.treeCache.getNotes(this.getParentNoteIds());
}
/** @returns {string[]} */
getChildNoteIds() {
return this.treeCache.children[this.noteId] || [];
}
/** @returns {Promise< NoteShort[]>} */
async getChildNotes() {
return await this.treeCache.getNotes(this.getChildNoteIds());
}
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/**
* @param {string} [name] - attribute name to filter
* @returns {Promise< Attribute[]>}
*/
async getAttributes(name) {
if (!this.attributeCache) {
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this.attributeCache = (await server.get('notes/' + this.noteId + '/attributes'))
.map(attrRow => new Attribute(this.treeCache, attrRow));
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}
if (name) {
return this.attributeCache.filter(attr => attr.name === name);
}
else {
return this.attributeCache;
}
}
/**
* @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);
}
/**
* @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);
}
/**
* @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);
}
/**
* @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);
}
/**
* @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;
}
/**
* @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); }
/**
* @param {string} name
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* @returns {Promise< NoteShort>|null} target note of the relation or null (if target is empty or note was not found)
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*/
async getRelationTarget(name) {
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const targets = await this.getRelationTargets(name);
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return targets.length > 0 ? targets[0] : null;
}
/**
* @param {string} [name] - relation name to filter
* @returns {Promise< NoteShort[]>}
*/
async getRelationTargets(name) {
const relations = await this.getRelations(name);
const targets = [];
for (const relation of relations) {
targets.push(await this.treeCache.getNote(relation.value));
}
return targets;
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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;
}
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/**
* Get relations which target this note
*
* @returns {Promise< Attribute[]>}
*/
async getTargetRelations() {
return (await server.get('notes/' + this.noteId + '/target-relations'))
.map(attrRow => new Attribute(this.treeCache, attrRow));
}
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get toString() {
return `Note(noteId=${this.noteId}, title=${this.title})`;
}
get dto() {
const dto = Object.assign({}, this);
delete dto.treeCache;
delete dto.archived;
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delete dto.attributeCache;
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return dto;
}
}
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