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Code Issues Releases Activity

Started integrating search engine to desktop app

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This commit is contained in:
Laurent Cozic
2018-12-10 19:58:49 +01:00
parent 460f826672
commit 0a6f8b0cfe
5 changed files with 60 additions and 9 deletions
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24
ReactNativeClient/lib/services/SearchEngine.js
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@@ -1,4 +1,5 @@
const { Logger } = require('lib/logger.js');
const { shim } = require('lib/shim.js');
const ItemChange = require('lib/models/ItemChange.js');
const Setting = require('lib/models/Setting.js');
const Note = require('lib/models/Note.js');
@@ -12,6 +13,7 @@ class SearchEngine {
this.db_ = null;
}
// Note: Duplicated in JoplinDatabase migration 15
async createFtsTables() {
await this.db().exec('CREATE VIRTUAL TABLE notes_fts USING fts4(content="notes", notindexed="id", id, title, body)');
await this.db().exec('INSERT INTO notes_fts(docid, id, title, body) SELECT rowid, id, title, body FROM notes WHERE is_conflict = 0 AND encryption_applied = 0');
@@ -27,6 +29,8 @@ class SearchEngine {
// await this.db().exec('INSERT INTO notes_fts(docid, id, title, body) SELECT rowid, id, title, body FROM notes WHERE is_conflict = 0 AND encryption_applied = 0');
// return;
this.logger().info('SearchEngine: Updating FTS table...');
await ItemChange.waitForAllSaved();
const startTime = Date.now();
@@ -112,6 +116,10 @@ class SearchEngine {
calculateWeight_(offsets) {
// Offset doc: https://www.sqlite.org/fts3.html#offsets
// TODO: If there's only one term - specia case - whatever has the most occurences win.
// TODO: Parse query string.
// TODO: Support wildcards
const occurenceCount = Math.floor(offsets.length / 4);
@@ -151,12 +159,26 @@ class SearchEngine {
}
async search(query) {
const sql = 'SELECT id, offsets(notes_fts) AS offsets FROM notes_fts WHERE notes_fts MATCH ?'
const sql = 'SELECT id, title, offsets(notes_fts) AS offsets FROM notes_fts WHERE notes_fts MATCH ?'
const rows = await this.db().selectAll(sql, [query]);
this.orderResults_(rows);
return rows;
}
static runInBackground() {
if (this.isRunningInBackground_) return;
this.isRunningInBackground_ = true;
setTimeout(() => {
SearchEngine.instance().updateFtsTables();
}, 1000 * 30);
shim.setInterval(() => {
SearchEngine.instance().updateFtsTables();
}, 1000 * 60 * 30);
}
}
module.exports = SearchEngine;