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sharing WIP
This commit is contained in:
zadam
parent
2cc4367b37
commit
a14aa461ca
@ -3,6 +3,9 @@
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const sql = require("../services/sql.js");
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const NoteSet = require("../services/search/note_set");
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/**
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* Becca is a backend cache of all notes, branches and attributes. There's a similar frontend cache Froca.
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*/
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class Becca {
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constructor() {
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this.reset();
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@ -6,12 +6,14 @@ import appContext from "./app_context.js";
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import NoteComplement from "../entities/note_complement.js";
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/**
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* Froca keeps a read only cache of note tree structure in frontend's memory.
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* Froca (FROntend CAche) keeps a read only cache of note tree structure in frontend's memory.
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* - notes are loaded lazily when unknown noteId is requested
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* - when note is loaded, all its parent and child branches are loaded as well. For a branch to be used, it's not must be loaded before
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* - deleted notes are present in the cache as well, but they don't have any branches. As a result check for deleted branch is done by presence check - if the branch is not there even though the corresponding note has been loaded, we can infer it is deleted.
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*
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* Note and branch deletions are corner cases and usually not needed.
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*
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* Backend has a similar cache called Becca
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*/
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class Froca {
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constructor() {
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112
src/share/entities/attribute.js
Normal file
112
src/share/entities/attribute.js
Normal file
@ -0,0 +1,112 @@
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"use strict";
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const Note = require('./note.js');
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const sql = require("../sql.js");
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class Attribute {
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constructor(row) {
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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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]);
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}
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update([attributeId, noteId, type, name, value, isInheritable, position]) {
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/** @param {string} */
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this.attributeId = attributeId;
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/** @param {string} */
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this.noteId = noteId;
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/** @param {string} */
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this.type = type;
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/** @param {string} */
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this.name = name;
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/** @param {int} */
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this.position = position;
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/** @param {string} */
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this.value = value;
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/** @param {boolean} */
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this.isInheritable = !!isInheritable;
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return this;
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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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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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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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return this.becca.getNote(this.noteId);
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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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module.exports = Attribute;
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90
src/share/entities/branch.js
Normal file
90
src/share/entities/branch.js
Normal file
@ -0,0 +1,90 @@
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"use strict";
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const Note = require('./note.js');
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const sql = require("../sql.js");
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class Branch {
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constructor(row) {
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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.branchId,
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row.noteId,
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row.parentNoteId,
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row.prefix,
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row.notePosition,
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row.isExpanded,
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row.utcDateModified
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]);
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}
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update([branchId, noteId, parentNoteId, prefix, notePosition, isExpanded]) {
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/** @param {string} */
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this.branchId = branchId;
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/** @param {string} */
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this.noteId = noteId;
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/** @param {string} */
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this.parentNoteId = parentNoteId;
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/** @param {string} */
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this.prefix = prefix;
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/** @param {int} */
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this.notePosition = notePosition;
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/** @param {boolean} */
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this.isExpanded = !!isExpanded;
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return this;
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}
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init() {
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if (this.branchId === 'root') {
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return;
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}
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const childNote = this.childNote;
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const parentNote = this.parentNote;
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if (!childNote.parents.includes(parentNote)) {
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childNote.parents.push(parentNote);
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}
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if (!childNote.parentBranches.includes(this)) {
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childNote.parentBranches.push(this);
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}
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if (!parentNote.children.includes(childNote)) {
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parentNote.children.push(childNote);
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}
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this.becca.branches[this.branchId] = this;
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this.becca.childParentToBranch[`${this.noteId}-${this.parentNoteId}`] = this;
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}
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/** @return {Note} */
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get childNote() {
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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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return this.becca.notes[this.noteId];
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}
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getNote() {
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return this.childNote;
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}
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/** @return {Note} */
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get parentNote() {
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if (!(this.parentNoteId 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.parentNoteId, new Note({noteId: this.parentNoteId}));
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}
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return this.becca.notes[this.parentNoteId];
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}
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}
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module.exports = Branch;
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577
src/share/entities/note.js
Normal file
577
src/share/entities/note.js
Normal file
@ -0,0 +1,577 @@
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"use strict";
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const sql = require('../sql');
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const utils = require('../../services/utils');
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const LABEL = 'label';
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const RELATION = 'relation';
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class Note {
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constructor(row) {
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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.noteId,
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row.title,
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row.type,
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row.mime
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]);
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}
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update([noteId, title, type, mime]) {
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/** @param {string} */
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this.noteId = noteId;
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/** @param {string} */
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this.title = title;
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/** @param {string} */
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this.type = type;
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/** @param {string} */
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this.mime = mime;
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return this;
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}
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init() {
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/** @param {Branch[]} */
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this.parentBranches = [];
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/** @param {Note[]} */
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this.parents = [];
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/** @param {Note[]} */
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this.children = [];
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/** @param {Attribute[]} */
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this.ownedAttributes = [];
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/** @param {Attribute[]|null} */
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this.__attributeCache = null;
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/** @param {Attribute[]|null} */
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this.inheritableAttributeCache = null;
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/** @param {Attribute[]} */
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this.targetRelations = [];
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this.becca.addNote(this.noteId, this);
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/** @param {Note[]|null} */
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this.ancestorCache = null;
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}
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getParentBranches() {
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return this.parentBranches;
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}
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getBranches() {
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return this.parentBranches;
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}
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getParentNotes() {
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return this.parents;
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}
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getChildNotes() {
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return this.children;
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}
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hasChildren() {
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return this.children && this.children.length > 0;
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}
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getChildBranches() {
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return this.children.map(childNote => this.becca.getBranchFromChildAndParent(childNote.noteId, this.noteId));
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}
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getContent(silentNotFoundError = false) {
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const row = sql.getRow(`SELECT content FROM note_contents WHERE noteId = ?`, [this.noteId]);
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if (!row) {
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if (silentNotFoundError) {
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return undefined;
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}
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else {
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throw new Error("Cannot find note content for noteId=" + this.noteId);
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}
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}
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let content = row.content;
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if (this.isStringNote()) {
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return content === null
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? ""
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: content.toString("UTF-8");
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}
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else {
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return content;
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}
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}
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/** @returns {*} */
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getJsonContent() {
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const content = this.getContent();
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if (!content || !content.trim()) {
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return null;
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}
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return JSON.parse(content);
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}
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/** @returns {boolean} true if this note is of application/json content type */
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isJson() {
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return this.mime === "application/json";
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}
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/** @returns {boolean} true if this note is JavaScript (code or attachment) */
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isJavaScript() {
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return (this.type === "code" || this.type === "file")
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&& (this.mime.startsWith("application/javascript")
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|| this.mime === "application/x-javascript"
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|| this.mime === "text/javascript");
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}
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/** @returns {boolean} true if this note is HTML */
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isHtml() {
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return ["code", "file", "render"].includes(this.type)
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&& this.mime === "text/html";
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}
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/** @returns {boolean} true if the note has string content (not binary) */
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isStringNote() {
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return utils.isStringNote(this.type, this.mime);
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}
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/**
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* @param {string} [type] - (optional) attribute type to filter
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* @param {string} [name] - (optional) attribute name to filter
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* @returns {Attribute[]} all note's attributes, including inherited ones
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*/
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getAttributes(type, name) {
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this.__getAttributes([]);
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if (type && name) {
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return this.__attributeCache.filter(attr => attr.type === type && attr.name === name);
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}
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else if (type) {
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return this.__attributeCache.filter(attr => attr.type === type);
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||||
}
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else if (name) {
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return this.__attributeCache.filter(attr => attr.name === name);
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}
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else {
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return this.__attributeCache.slice();
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}
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}
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__getAttributes(path) {
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if (path.includes(this.noteId)) {
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return [];
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}
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if (!this.__attributeCache) {
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const parentAttributes = this.ownedAttributes.slice();
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const newPath = [...path, this.noteId];
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if (this.noteId !== 'root') {
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for (const parentNote of this.parents) {
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parentAttributes.push(...parentNote.__getInheritableAttributes(newPath));
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}
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}
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const templateAttributes = [];
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for (const ownedAttr of parentAttributes) { // parentAttributes so we process also inherited templates
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if (ownedAttr.type === 'relation' && ownedAttr.name === 'template') {
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const templateNote = this.becca.notes[ownedAttr.value];
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if (templateNote) {
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templateAttributes.push(...templateNote.__getAttributes(newPath));
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}
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||||
}
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||||
}
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this.__attributeCache = [];
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||||
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const addedAttributeIds = new Set();
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for (const attr of parentAttributes.concat(templateAttributes)) {
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if (!addedAttributeIds.has(attr.attributeId)) {
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addedAttributeIds.add(attr.attributeId);
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this.__attributeCache.push(attr);
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}
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}
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||||
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||||
this.inheritableAttributeCache = [];
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||||
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for (const attr of this.__attributeCache) {
|
||||
if (attr.isInheritable) {
|
||||
this.inheritableAttributeCache.push(attr);
|
||||
}
|
||||
}
|
||||
}
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||||
|
||||
return this.__attributeCache;
|
||||
}
|
||||
|
||||
/** @return {Attribute[]} */
|
||||
__getInheritableAttributes(path) {
|
||||
if (path.includes(this.noteId)) {
|
||||
return [];
|
||||
}
|
||||
|
||||
if (!this.inheritableAttributeCache) {
|
||||
this.__getAttributes(path); // will refresh also this.inheritableAttributeCache
|
||||
}
|
||||
|
||||
return this.inheritableAttributeCache;
|
||||
}
|
||||
|
||||
hasAttribute(type, name) {
|
||||
return !!this.getAttributes().find(attr => attr.type === type && attr.name === name);
|
||||
}
|
||||
|
||||
getAttributeCaseInsensitive(type, name, value) {
|
||||
name = name.toLowerCase();
|
||||
value = value ? value.toLowerCase() : null;
|
||||
|
||||
return this.getAttributes().find(
|
||||
attr => attr.type === type
|
||||
&& attr.name.toLowerCase() === name
|
||||
&& (!value || attr.value.toLowerCase() === value));
|
||||
}
|
||||
|
||||
getRelationTarget(name) {
|
||||
const relation = this.getAttributes().find(attr => attr.type === 'relation' && attr.name === name);
|
||||
|
||||
return relation ? relation.targetNote : null;
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {string} name - label name
|
||||
* @returns {boolean} true if label exists (including inherited)
|
||||
*/
|
||||
hasLabel(name) { return this.hasAttribute(LABEL, name); }
|
||||
|
||||
/**
|
||||
* @param {string} name - label name
|
||||
* @returns {boolean} true if label exists (excluding inherited)
|
||||
*/
|
||||
hasOwnedLabel(name) { return this.hasOwnedAttribute(LABEL, name); }
|
||||
|
||||
/**
|
||||
* @param {string} name - relation name
|
||||
* @returns {boolean} true if relation exists (including inherited)
|
||||
*/
|
||||
hasRelation(name) { return this.hasAttribute(RELATION, name); }
|
||||
|
||||
/**
|
||||
* @param {string} name - relation name
|
||||
* @returns {boolean} true if relation exists (excluding inherited)
|
||||
*/
|
||||
hasOwnedRelation(name) { return this.hasOwnedAttribute(RELATION, name); }
|
||||
|
||||
/**
|
||||
* @param {string} name - label name
|
||||
* @returns {Attribute|null} label if it exists, null otherwise
|
||||
*/
|
||||
getLabel(name) { return this.getAttribute(LABEL, name); }
|
||||
|
||||
/**
|
||||
* @param {string} name - label name
|
||||
* @returns {Attribute|null} label if it exists, null otherwise
|
||||
*/
|
||||
getOwnedLabel(name) { return this.getOwnedAttribute(LABEL, name); }
|
||||
|
||||
/**
|
||||
* @param {string} name - relation name
|
||||
* @returns {Attribute|null} relation if it exists, null otherwise
|
||||
*/
|
||||
getRelation(name) { return this.getAttribute(RELATION, name); }
|
||||
|
||||
/**
|
||||
* @param {string} name - relation name
|
||||
* @returns {Attribute|null} relation if it exists, null otherwise
|
||||
*/
|
||||
getOwnedRelation(name) { return this.getOwnedAttribute(RELATION, name); }
|
||||
|
||||
/**
|
||||
* @param {string} name - label name
|
||||
* @returns {string|null} label value if label exists, null otherwise
|
||||
*/
|
||||
getLabelValue(name) { return this.getAttributeValue(LABEL, name); }
|
||||
|
||||
/**
|
||||
* @param {string} name - label name
|
||||
* @returns {string|null} label value if label exists, null otherwise
|
||||
*/
|
||||
getOwnedLabelValue(name) { return this.getOwnedAttributeValue(LABEL, name); }
|
||||
|
||||
/**
|
||||
* @param {string} name - relation name
|
||||
* @returns {string|null} relation value if relation exists, null otherwise
|
||||
*/
|
||||
getRelationValue(name) { return this.getAttributeValue(RELATION, name); }
|
||||
|
||||
/**
|
||||
* @param {string} name - relation name
|
||||
* @returns {string|null} relation value if relation exists, null otherwise
|
||||
*/
|
||||
getOwnedRelationValue(name) { return this.getOwnedAttributeValue(RELATION, name); }
|
||||
|
||||
/**
|
||||
* @param {string} type - attribute type (label, relation, etc.)
|
||||
* @param {string} name - attribute name
|
||||
* @returns {boolean} true if note has an attribute with given type and name (excluding inherited)
|
||||
*/
|
||||
hasOwnedAttribute(type, name) {
|
||||
return !!this.getOwnedAttribute(type, name);
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {string} type - attribute type (label, relation, etc.)
|
||||
* @param {string} name - attribute name
|
||||
* @returns {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.
|
||||
*/
|
||||
getAttribute(type, name) {
|
||||
const attributes = 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 {string|null} attribute value of given type and name or null if no such attribute exists.
|
||||
*/
|
||||
getAttributeValue(type, name) {
|
||||
const attr = this.getAttribute(type, name);
|
||||
|
||||
return attr ? attr.value : null;
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {string} type - attribute type (label, relation, etc.)
|
||||
* @param {string} name - attribute name
|
||||
* @returns {string|null} attribute value of given type and name or null if no such attribute exists.
|
||||
*/
|
||||
getOwnedAttributeValue(type, name) {
|
||||
const attr = this.getOwnedAttribute(type, name);
|
||||
|
||||
return attr ? attr.value : null;
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {string} [name] - label name to filter
|
||||
* @returns {Attribute[]} all note's labels (attributes with type label), including inherited ones
|
||||
*/
|
||||
getLabels(name) {
|
||||
return this.getAttributes(LABEL, name);
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {string} [name] - label name to filter
|
||||
* @returns {string[]} all note's label values, including inherited ones
|
||||
*/
|
||||
getLabelValues(name) {
|
||||
return this.getLabels(name).map(l => l.value);
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {string} [name] - label name to filter
|
||||
* @returns {Attribute[]} all note's labels (attributes with type label), excluding inherited ones
|
||||
*/
|
||||
getOwnedLabels(name) {
|
||||
return this.getOwnedAttributes(LABEL, name);
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {string} [name] - label name to filter
|
||||
* @returns {string[]} all note's label values, excluding inherited ones
|
||||
*/
|
||||
getOwnedLabelValues(name) {
|
||||
return this.getOwnedAttributes(LABEL, name).map(l => l.value);
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {string} [name] - relation name to filter
|
||||
* @returns {Attribute[]} all note's relations (attributes with type relation), including inherited ones
|
||||
*/
|
||||
getRelations(name) {
|
||||
return this.getAttributes(RELATION, name);
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {string} [name] - relation name to filter
|
||||
* @returns {Attribute[]} all note's relations (attributes with type relation), excluding inherited ones
|
||||
*/
|
||||
getOwnedRelations(name) {
|
||||
return this.getOwnedAttributes(RELATION, name);
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {string} [type] - (optional) attribute type to filter
|
||||
* @param {string} [name] - (optional) attribute name to filter
|
||||
* @returns {Attribute[]} note's "owned" attributes - excluding inherited ones
|
||||
*/
|
||||
getOwnedAttributes(type, name) {
|
||||
// it's a common mistake to include # or ~ into attribute name
|
||||
if (name && ["#", "~"].includes(name[0])) {
|
||||
name = name.substr(1);
|
||||
}
|
||||
|
||||
if (type && name) {
|
||||
return this.ownedAttributes.filter(attr => attr.type === type && attr.name === name);
|
||||
}
|
||||
else if (type) {
|
||||
return this.ownedAttributes.filter(attr => attr.type === type);
|
||||
}
|
||||
else if (name) {
|
||||
return this.ownedAttributes.filter(attr => attr.name === name);
|
||||
}
|
||||
else {
|
||||
return this.ownedAttributes.slice();
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* @returns {Attribute} attribute belonging to this specific note (excludes inherited attributes)
|
||||
*
|
||||
* This method can be significantly faster than the getAttribute()
|
||||
*/
|
||||
getOwnedAttribute(type, name) {
|
||||
const attrs = this.getOwnedAttributes(type, name);
|
||||
|
||||
return attrs.length > 0 ? attrs[0] : null;
|
||||
}
|
||||
|
||||
get isArchived() {
|
||||
return this.hasAttribute('label', 'archived');
|
||||
}
|
||||
|
||||
hasInheritableOwnedArchivedLabel() {
|
||||
return !!this.ownedAttributes.find(attr => attr.type === 'label' && attr.name === 'archived' && attr.isInheritable);
|
||||
}
|
||||
|
||||
// will sort the parents so that non-search & non-archived are first and archived at the end
|
||||
// this is done so that non-search & non-archived paths are always explored as first when looking for note path
|
||||
resortParents() {
|
||||
this.parentBranches.sort((a, b) =>
|
||||
a.branchId.startsWith('virt-')
|
||||
|| a.parentNote.hasInheritableOwnedArchivedLabel() ? 1 : -1);
|
||||
|
||||
this.parents = this.parentBranches.map(branch => branch.parentNote);
|
||||
}
|
||||
|
||||
isTemplate() {
|
||||
return !!this.targetRelations.find(rel => rel.name === 'template');
|
||||
}
|
||||
|
||||
/** @return {Note[]} */
|
||||
getSubtreeNotesIncludingTemplated() {
|
||||
const arr = [[this]];
|
||||
|
||||
for (const childNote of this.children) {
|
||||
arr.push(childNote.getSubtreeNotesIncludingTemplated());
|
||||
}
|
||||
|
||||
for (const targetRelation of this.targetRelations) {
|
||||
if (targetRelation.name === 'template') {
|
||||
const note = targetRelation.note;
|
||||
|
||||
if (note) {
|
||||
arr.push(note.getSubtreeNotesIncludingTemplated());
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return arr.flat();
|
||||
}
|
||||
|
||||
/** @return {Note[]} */
|
||||
getSubtreeNotes(includeArchived = true) {
|
||||
const noteSet = new Set();
|
||||
|
||||
function addSubtreeNotesInner(note) {
|
||||
if (!includeArchived && note.isArchived) {
|
||||
return;
|
||||
}
|
||||
|
||||
noteSet.add(note);
|
||||
|
||||
for (const childNote of note.children) {
|
||||
addSubtreeNotesInner(childNote);
|
||||
}
|
||||
}
|
||||
|
||||
addSubtreeNotesInner(this);
|
||||
|
||||
return Array.from(noteSet);
|
||||
}
|
||||
|
||||
/** @return {String[]} */
|
||||
getSubtreeNoteIds() {
|
||||
return this.getSubtreeNotes().map(note => note.noteId);
|
||||
}
|
||||
|
||||
getDescendantNoteIds() {
|
||||
return this.getSubtreeNoteIds();
|
||||
}
|
||||
|
||||
getAncestors() {
|
||||
if (!this.ancestorCache) {
|
||||
const noteIds = new Set();
|
||||
this.ancestorCache = [];
|
||||
|
||||
for (const parent of this.parents) {
|
||||
if (!noteIds.has(parent.noteId)) {
|
||||
this.ancestorCache.push(parent);
|
||||
noteIds.add(parent.noteId);
|
||||
}
|
||||
|
||||
for (const ancestorNote of parent.getAncestors()) {
|
||||
if (!noteIds.has(ancestorNote.noteId)) {
|
||||
this.ancestorCache.push(ancestorNote);
|
||||
noteIds.add(ancestorNote.noteId);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return this.ancestorCache;
|
||||
}
|
||||
|
||||
getTargetRelations() {
|
||||
return this.targetRelations;
|
||||
}
|
||||
|
||||
/** @return {Note[]} - returns only notes which are templated, does not include their subtrees
|
||||
* in effect returns notes which are influenced by note's non-inheritable attributes */
|
||||
getTemplatedNotes() {
|
||||
const arr = [this];
|
||||
|
||||
for (const targetRelation of this.targetRelations) {
|
||||
if (targetRelation.name === 'template') {
|
||||
const note = targetRelation.note;
|
||||
|
||||
if (note) {
|
||||
arr.push(note);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return arr;
|
||||
}
|
||||
|
||||
/**
|
||||
* @param ancestorNoteId
|
||||
* @return {boolean} - true if ancestorNoteId occurs in at least one of the note's paths
|
||||
*/
|
||||
isDescendantOfNote(ancestorNoteId) {
|
||||
const notePaths = this.getAllNotePaths();
|
||||
|
||||
return notePaths.some(path => path.includes(ancestorNoteId));
|
||||
}
|
||||
}
|
||||
|
||||
module.exports = Note;
|
||||
75
src/share/shaca/shaca.js
Normal file
75
src/share/shaca/shaca.js
Normal file
@ -0,0 +1,75 @@
|
||||
"use strict";
|
||||
|
||||
class Shaca {
|
||||
constructor() {
|
||||
this.reset();
|
||||
}
|
||||
|
||||
reset() {
|
||||
/** @type {Object.<String, Note>} */
|
||||
this.notes = {};
|
||||
/** @type {Object.<String, Branch>} */
|
||||
this.branches = {};
|
||||
/** @type {Object.<String, Branch>} */
|
||||
this.childParentToBranch = {};
|
||||
/** @type {Object.<String, Attribute>} */
|
||||
this.attributes = {};
|
||||
|
||||
this.loaded = false;
|
||||
}
|
||||
|
||||
getNote(noteId) {
|
||||
return this.notes[noteId];
|
||||
}
|
||||
|
||||
getNotes(noteIds, ignoreMissing = false) {
|
||||
const filteredNotes = [];
|
||||
|
||||
for (const noteId of noteIds) {
|
||||
const note = this.notes[noteId];
|
||||
|
||||
if (!note) {
|
||||
if (ignoreMissing) {
|
||||
continue;
|
||||
}
|
||||
|
||||
throw new Error(`Note '${noteId}' was not found in becca.`);
|
||||
}
|
||||
|
||||
filteredNotes.push(note);
|
||||
}
|
||||
|
||||
return filteredNotes;
|
||||
}
|
||||
|
||||
getBranch(branchId) {
|
||||
return this.branches[branchId];
|
||||
}
|
||||
|
||||
getAttribute(attributeId) {
|
||||
return this.attributes[attributeId];
|
||||
}
|
||||
|
||||
getBranchFromChildAndParent(childNoteId, parentNoteId) {
|
||||
return this.childParentToBranch[`${childNoteId}-${parentNoteId}`];
|
||||
}
|
||||
|
||||
getEntity(entityName, entityId) {
|
||||
if (!entityName || !entityId) {
|
||||
return null;
|
||||
}
|
||||
|
||||
const camelCaseEntityName = entityName.toLowerCase().replace(/(_[a-z])/g,
|
||||
group =>
|
||||
group
|
||||
.toUpperCase()
|
||||
.replace('_', '')
|
||||
);
|
||||
|
||||
return this[camelCaseEntityName][entityId];
|
||||
}
|
||||
}
|
||||
|
||||
const shaca = new Shaca();
|
||||
|
||||
module.exports = shaca;
|
||||
207
src/share/shaca/shaca_loader.js
Normal file
207
src/share/shaca/shaca_loader.js
Normal file
@ -0,0 +1,207 @@
|
||||
"use strict";
|
||||
|
||||
const sql = require('../services/sql');
|
||||
const eventService = require('../services/events');
|
||||
const shaca = require('./shaca.js');
|
||||
const sqlInit = require('../services/sql_init');
|
||||
const log = require('../services/log');
|
||||
const Note = require('./entities/note');
|
||||
const Branch = require('./entities/branch');
|
||||
const Attribute = require('./entities/attribute');
|
||||
const Option = require('./entities/option');
|
||||
const entityConstructor = require("../becca/entity_constructor");
|
||||
|
||||
function load() {
|
||||
const start = Date.now();
|
||||
shaca.reset();
|
||||
|
||||
// using raw query and passing arrays to avoid allocating new objects
|
||||
// this is worth it for becca load since it happens every run and blocks the app until finished
|
||||
|
||||
for (const row of sql.getRawRows(`SELECT noteId, title, type, mime, isProtected, dateCreated, dateModified, utcDateCreated, utcDateModified FROM notes WHERE isDeleted = 0`, [])) {
|
||||
new Note().update(row).init();
|
||||
}
|
||||
|
||||
for (const row of sql.getRawRows(`SELECT branchId, noteId, parentNoteId, prefix, notePosition, isExpanded, utcDateModified FROM branches WHERE isDeleted = 0`, [])) {
|
||||
new Branch().update(row).init();
|
||||
}
|
||||
|
||||
for (const row of sql.getRawRows(`SELECT attributeId, noteId, type, name, value, isInheritable, position, utcDateModified FROM attributes WHERE isDeleted = 0`, [])) {
|
||||
new Attribute().update(row).init();
|
||||
}
|
||||
|
||||
for (const row of sql.getRows(`SELECT name, value, isSynced, utcDateModified FROM options`)) {
|
||||
new Option(row);
|
||||
}
|
||||
|
||||
shaca.loaded = true;
|
||||
|
||||
log.info(`Shaca load took ${Date.now() - start}ms`);
|
||||
}
|
||||
|
||||
eventService.subscribe([eventService.ENTITY_CHANGE_SYNCED], ({entityName, entityRow}) => {
|
||||
if (!becca.loaded) {
|
||||
return;
|
||||
}
|
||||
|
||||
if (["notes", "branches", "attributes"].includes(entityName)) {
|
||||
const EntityClass = entityConstructor.getEntityFromEntityName(entityName);
|
||||
const primaryKeyName = EntityClass.primaryKeyName;
|
||||
|
||||
let beccaEntity = becca.getEntity(entityName, entityRow[primaryKeyName]);
|
||||
|
||||
if (beccaEntity) {
|
||||
beccaEntity.updateFromRow(entityRow);
|
||||
} else {
|
||||
beccaEntity = new EntityClass();
|
||||
beccaEntity.updateFromRow(entityRow);
|
||||
beccaEntity.init();
|
||||
}
|
||||
}
|
||||
|
||||
postProcessEntityUpdate(entityName, entityRow);
|
||||
});
|
||||
|
||||
eventService.subscribe(eventService.ENTITY_CHANGED, ({entityName, entity}) => {
|
||||
if (!becca.loaded) {
|
||||
return;
|
||||
}
|
||||
|
||||
postProcessEntityUpdate(entityName, entity);
|
||||
});
|
||||
|
||||
eventService.subscribe([eventService.ENTITY_DELETED, eventService.ENTITY_DELETE_SYNCED], ({entityName, entityId}) => {
|
||||
if (!becca.loaded) {
|
||||
return;
|
||||
}
|
||||
|
||||
if (entityName === 'notes') {
|
||||
noteDeleted(entityId);
|
||||
} else if (entityName === 'branches') {
|
||||
branchDeleted(entityId);
|
||||
} else if (entityName === 'attributes') {
|
||||
attributeDeleted(entityId);
|
||||
}
|
||||
});
|
||||
|
||||
function noteDeleted(noteId) {
|
||||
delete becca.notes[noteId];
|
||||
|
||||
becca.dirtyNoteSetCache();
|
||||
}
|
||||
|
||||
function branchDeleted(branchId) {
|
||||
const branch = becca.branches[branchId];
|
||||
|
||||
if (!branch) {
|
||||
return;
|
||||
}
|
||||
|
||||
const childNote = becca.notes[branch.noteId];
|
||||
|
||||
if (childNote) {
|
||||
childNote.parents = childNote.parents.filter(parent => parent.noteId !== branch.parentNoteId);
|
||||
childNote.parentBranches = childNote.parentBranches
|
||||
.filter(parentBranch => parentBranch.branchId !== branch.branchId);
|
||||
|
||||
if (childNote.parents.length > 0) {
|
||||
childNote.invalidateSubTree();
|
||||
}
|
||||
}
|
||||
|
||||
const parentNote = becca.notes[branch.parentNoteId];
|
||||
|
||||
if (parentNote) {
|
||||
parentNote.children = parentNote.children.filter(child => child.noteId !== branch.noteId);
|
||||
}
|
||||
|
||||
delete becca.childParentToBranch[`${branch.noteId}-${branch.parentNoteId}`];
|
||||
delete becca.branches[branch.branchId];
|
||||
}
|
||||
|
||||
function branchUpdated(branch) {
|
||||
const childNote = becca.notes[branch.noteId];
|
||||
|
||||
if (childNote) {
|
||||
childNote.flatTextCache = null;
|
||||
childNote.resortParents();
|
||||
}
|
||||
}
|
||||
|
||||
function attributeDeleted(attributeId) {
|
||||
const attribute = becca.attributes[attributeId];
|
||||
|
||||
if (!attribute) {
|
||||
return;
|
||||
}
|
||||
|
||||
const note = becca.notes[attribute.noteId];
|
||||
|
||||
if (note) {
|
||||
// first invalidate and only then remove the attribute (otherwise invalidation wouldn't be complete)
|
||||
if (attribute.isAffectingSubtree || note.isTemplate()) {
|
||||
note.invalidateSubTree();
|
||||
} else {
|
||||
note.invalidateThisCache();
|
||||
}
|
||||
|
||||
note.ownedAttributes = note.ownedAttributes.filter(attr => attr.attributeId !== attribute.attributeId);
|
||||
|
||||
const targetNote = attribute.targetNote;
|
||||
|
||||
if (targetNote) {
|
||||
targetNote.targetRelations = targetNote.targetRelations.filter(rel => rel.attributeId !== attribute.attributeId);
|
||||
}
|
||||
}
|
||||
|
||||
delete becca.attributes[attribute.attributeId];
|
||||
|
||||
const key = `${attribute.type}-${attribute.name.toLowerCase()}`;
|
||||
|
||||
if (key in becca.attributeIndex) {
|
||||
becca.attributeIndex[key] = becca.attributeIndex[key].filter(attr => attr.attributeId !== attribute.attributeId);
|
||||
}
|
||||
}
|
||||
|
||||
function attributeUpdated(attribute) {
|
||||
const note = becca.notes[attribute.noteId];
|
||||
|
||||
if (note) {
|
||||
if (attribute.isAffectingSubtree || note.isTemplate()) {
|
||||
note.invalidateSubTree();
|
||||
} else {
|
||||
note.invalidateThisCache();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
function noteReorderingUpdated(branchIdList) {
|
||||
const parentNoteIds = new Set();
|
||||
|
||||
for (const branchId in branchIdList) {
|
||||
const branch = becca.branches[branchId];
|
||||
|
||||
if (branch) {
|
||||
branch.notePosition = branchIdList[branchId];
|
||||
|
||||
parentNoteIds.add(branch.parentNoteId);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
eventService.subscribe(eventService.ENTER_PROTECTED_SESSION, () => {
|
||||
try {
|
||||
becca.decryptProtectedNotes();
|
||||
}
|
||||
catch (e) {
|
||||
log.error(`Could not decrypt protected notes: ${e.message} ${e.stack}`);
|
||||
}
|
||||
});
|
||||
|
||||
eventService.subscribe(eventService.LEAVE_PROTECTED_SESSION, load);
|
||||
|
||||
module.exports = {
|
||||
load,
|
||||
reload,
|
||||
beccaLoaded
|
||||
};
|
||||
167
src/share/sql.js
Normal file
167
src/share/sql.js
Normal file
@ -0,0 +1,167 @@
|
||||
"use strict";
|
||||
|
||||
const log = require('../services/log');
|
||||
const Database = require('better-sqlite3');
|
||||
const dataDir = require('../services/data_dir');
|
||||
|
||||
const dbConnection = new Database(dataDir.DOCUMENT_PATH, { readonly: true });
|
||||
|
||||
[`exit`, `SIGINT`, `SIGUSR1`, `SIGUSR2`, `SIGTERM`].forEach(eventType => {
|
||||
process.on(eventType, () => {
|
||||
if (dbConnection) {
|
||||
// closing connection is especially important to fold -wal file into the main DB file
|
||||
// (see https://sqlite.org/tempfiles.html for details)
|
||||
dbConnection.close();
|
||||
}
|
||||
});
|
||||
});
|
||||
|
||||
const statementCache = {};
|
||||
|
||||
function stmt(sql) {
|
||||
if (!(sql in statementCache)) {
|
||||
statementCache[sql] = dbConnection.prepare(sql);
|
||||
}
|
||||
|
||||
return statementCache[sql];
|
||||
}
|
||||
|
||||
function getRow(query, params = []) {
|
||||
return wrap(query, s => s.get(params));
|
||||
}
|
||||
|
||||
function getRowOrNull(query, params = []) {
|
||||
const all = getRows(query, params);
|
||||
|
||||
return all.length > 0 ? all[0] : null;
|
||||
}
|
||||
|
||||
function getValue(query, params = []) {
|
||||
const row = getRowOrNull(query, params);
|
||||
|
||||
if (!row) {
|
||||
return null;
|
||||
}
|
||||
|
||||
return row[Object.keys(row)[0]];
|
||||
}
|
||||
|
||||
// smaller values can result in better performance due to better usage of statement cache
|
||||
const PARAM_LIMIT = 100;
|
||||
|
||||
function getManyRows(query, params) {
|
||||
let results = [];
|
||||
|
||||
while (params.length > 0) {
|
||||
const curParams = params.slice(0, Math.min(params.length, PARAM_LIMIT));
|
||||
params = params.slice(curParams.length);
|
||||
|
||||
const curParamsObj = {};
|
||||
|
||||
let j = 1;
|
||||
for (const param of curParams) {
|
||||
curParamsObj['param' + j++] = param;
|
||||
}
|
||||
|
||||
let i = 1;
|
||||
const questionMarks = curParams.map(() => ":param" + i++).join(",");
|
||||
const curQuery = query.replace(/\?\?\?/g, questionMarks);
|
||||
|
||||
const statement = curParams.length === PARAM_LIMIT
|
||||
? stmt(curQuery)
|
||||
: dbConnection.prepare(curQuery);
|
||||
|
||||
const subResults = statement.all(curParamsObj);
|
||||
results = results.concat(subResults);
|
||||
}
|
||||
|
||||
return results;
|
||||
}
|
||||
|
||||
function getRows(query, params = []) {
|
||||
return wrap(query, s => s.all(params));
|
||||
}
|
||||
|
||||
function getRawRows(query, params = []) {
|
||||
return wrap(query, s => s.raw().all(params));
|
||||
}
|
||||
|
||||
function iterateRows(query, params = []) {
|
||||
return stmt(query).iterate(params);
|
||||
}
|
||||
|
||||
function getMap(query, params = []) {
|
||||
const map = {};
|
||||
const results = getRows(query, params);
|
||||
|
||||
for (const row of results) {
|
||||
const keys = Object.keys(row);
|
||||
|
||||
map[row[keys[0]]] = row[keys[1]];
|
||||
}
|
||||
|
||||
return map;
|
||||
}
|
||||
|
||||
function getColumn(query, params = []) {
|
||||
const list = [];
|
||||
const result = getRows(query, params);
|
||||
|
||||
if (result.length === 0) {
|
||||
return list;
|
||||
}
|
||||
|
||||
const key = Object.keys(result[0])[0];
|
||||
|
||||
for (const row of result) {
|
||||
list.push(row[key]);
|
||||
}
|
||||
|
||||
return list;
|
||||
}
|
||||
|
||||
function wrap(query, func) {
|
||||
const startTimestamp = Date.now();
|
||||
let result;
|
||||
|
||||
try {
|
||||
result = func(stmt(query));
|
||||
}
|
||||
catch (e) {
|
||||
if (e.message.includes("The database connection is not open")) {
|
||||
// this often happens on killing the app which puts these alerts in front of user
|
||||
// in these cases error should be simply ignored.
|
||||
console.log(e.message);
|
||||
|
||||
return null
|
||||
}
|
||||
|
||||
throw e;
|
||||
}
|
||||
|
||||
const milliseconds = Date.now() - startTimestamp;
|
||||
|
||||
if (milliseconds >= 20) {
|
||||
if (query.includes("WITH RECURSIVE")) {
|
||||
log.info(`Slow recursive query took ${milliseconds}ms.`);
|
||||
}
|
||||
else {
|
||||
log.info(`Slow query took ${milliseconds}ms: ${query.trim().replace(/\s+/g, " ")}`);
|
||||
}
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
module.exports = {
|
||||
dbConnection,
|
||||
getValue,
|
||||
getRow,
|
||||
getRowOrNull,
|
||||
getRows,
|
||||
getRawRows,
|
||||
iterateRows,
|
||||
getManyRows,
|
||||
getMap,
|
||||
getColumn
|
||||
};
|
||||
Loading…
x
Reference in New Issue
Block a user