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authortoasted-nutbread <toasted-nutbread@users.noreply.github.com>2019-11-03 15:40:56 -0500
committertoasted-nutbread <toasted-nutbread@users.noreply.github.com>2019-11-10 13:01:39 -0500
commit3a1e3392ed21205ab09e6b05f6c5beaa70e17b03 (patch)
tree1a221290a76a14f22a5b28f6eb4cec093f2367a0 /ext/bg/js
parent6c023789d93e9799370dc496f9d35d8cdf66be38 (diff)
Use native IndexedDB to create database and object stores
Diffstat (limited to 'ext/bg/js')
-rw-r--r--ext/bg/js/database.js111
1 files changed, 96 insertions, 15 deletions
diff --git a/ext/bg/js/database.js b/ext/bg/js/database.js
index e5245582..9810328f 100644
--- a/ext/bg/js/database.js
+++ b/ext/bg/js/database.js
@@ -27,23 +27,63 @@ class Database {
throw new Error('Database already initialized');
}
- this.db = new Dexie('dict');
- this.db.version(2).stores({
- terms: '++id,dictionary,expression,reading',
- kanji: '++,dictionary,character',
- tagMeta: '++,dictionary',
- dictionaries: '++,title,version'
- });
- this.db.version(3).stores({
- termMeta: '++,dictionary,expression',
- kanjiMeta: '++,dictionary,character',
- tagMeta: '++,dictionary,name'
- });
- this.db.version(4).stores({
- terms: '++id,dictionary,expression,reading,sequence'
+ const idb = await Database.open('dict', 4, (db, transaction, oldVersion) => {
+ Database.upgrade(db, transaction, oldVersion, [
+ {
+ version: 2,
+ stores: {
+ terms: {
+ primaryKey: {keyPath: 'id', autoIncrement: true},
+ indices: ['dictionary', 'expression', 'reading']
+ },
+ kanji: {
+ primaryKey: {autoIncrement: true},
+ indices: ['dictionary', 'character']
+ },
+ tagMeta: {
+ primaryKey: {autoIncrement: true},
+ indices: ['dictionary']
+ },
+ dictionaries: {
+ primaryKey: {autoIncrement: true},
+ indices: ['title', 'version']
+ }
+ }
+ },
+ {
+ version: 3,
+ stores: {
+ termMeta: {
+ primaryKey: {autoIncrement: true},
+ indices: ['dictionary', 'expression']
+ },
+ kanjiMeta: {
+ primaryKey: {autoIncrement: true},
+ indices: ['dictionary', 'character']
+ },
+ tagMeta: {
+ primaryKey: {autoIncrement: true},
+ indices: ['dictionary', 'name']
+ }
+ }
+ },
+ {
+ version: 4,
+ stores: {
+ terms: {
+ primaryKey: {keyPath: 'id', autoIncrement: true},
+ indices: ['dictionary', 'expression', 'reading', 'sequence']
+ }
+ }
+ }
+ ]);
});
- await this.db.open();
+ this.db = {
+ backendDB: () => idb,
+ close: () => {}, // Not implemented
+ delete: () => {} // Not implemented
+ };
}
async purge() {
@@ -734,4 +774,45 @@ class Database {
}
});
}
+
+ static open(name, version, onUpgradeNeeded) {
+ return new Promise((resolve, reject) => {
+ const request = window.indexedDB.open(name, version * 10);
+
+ request.onupgradeneeded = (event) => {
+ try {
+ request.transaction.onerror = (e) => reject(e);
+ onUpgradeNeeded(request.result, request.transaction, event.oldVersion / 10, event.newVersion / 10);
+ } catch (e) {
+ reject(e);
+ }
+ };
+
+ request.onerror = (e) => reject(e);
+ request.onsuccess = () => resolve(request.result);
+ });
+ }
+
+ static upgrade(db, transaction, oldVersion, upgrades) {
+ for (const {version, stores} of upgrades) {
+ if (oldVersion >= version) { continue; }
+
+ const objectStoreNames = Object.keys(stores);
+ for (const objectStoreName of objectStoreNames) {
+ const {primaryKey, indices} = stores[objectStoreName];
+
+ const objectStore = (
+ transaction.objectStoreNames.contains(objectStoreName) ?
+ transaction.objectStore(objectStoreName) :
+ db.createObjectStore(objectStoreName, primaryKey)
+ );
+
+ for (const indexName of indices) {
+ if (objectStore.indexNames.contains(indexName)) { continue; }
+
+ objectStore.createIndex(indexName, indexName, {});
+ }
+ }
+ }
+ }
}