From cd78d56feedef1475ce8ddb98e208c7a004819df Mon Sep 17 00:00:00 2001 From: toasted-nutbread Date: Fri, 13 Aug 2021 18:35:31 -0400 Subject: Database improvements to data persistency (#1893) * Fix function check * Rename arguments of getAll, getAllKeys, and their private functions * Simplify bulkAdd * Simplify delete * Simplify bulkDelete * Remove persistData --- ext/js/data/database.js | 108 +++++++++++++-------------------- ext/js/language/dictionary-database.js | 4 -- ext/js/language/dictionary-importer.js | 4 -- 3 files changed, 43 insertions(+), 73 deletions(-) diff --git a/ext/js/data/database.js b/ext/js/data/database.js index 222e376c..224233a8 100644 --- a/ext/js/data/database.js +++ b/ext/js/data/database.js @@ -76,38 +76,30 @@ class Database { return; } - const end = start + count; - let completedCount = 0; - const onError = (e) => reject(e.target.error); - const onSuccess = () => { - if (++completedCount >= count) { - resolve(); - } - }; - const transaction = this.transaction([objectStoreName], 'readwrite'); + transaction.onerror = (e) => reject(e.target.error); + transaction.oncomplete = () => resolve(); const objectStore = transaction.objectStore(objectStoreName); - for (let i = start; i < end; ++i) { - const request = objectStore.add(items[i]); - request.onerror = onError; - request.onsuccess = onSuccess; + for (let i = start, ii = start + count; i < ii; ++i) { + objectStore.add(items[i]); } + transaction.commit(); }); } - getAll(objectStoreOrIndex, query, resolve, reject, data) { + getAll(objectStoreOrIndex, query, onSuccess, onError, data) { if (typeof objectStoreOrIndex.getAll === 'function') { - this._getAllFast(objectStoreOrIndex, query, resolve, reject, data); + this._getAllFast(objectStoreOrIndex, query, onSuccess, onError, data); } else { - this._getAllUsingCursor(objectStoreOrIndex, query, resolve, reject, data); + this._getAllUsingCursor(objectStoreOrIndex, query, onSuccess, onError, data); } } - getAllKeys(objectStoreOrIndex, query, resolve, reject) { - if (typeof objectStoreOrIndex.getAll === 'function') { - this._getAllKeysFast(objectStoreOrIndex, query, resolve, reject); + getAllKeys(objectStoreOrIndex, query, onSuccess, onError) { + if (typeof objectStoreOrIndex.getAllKeys === 'function') { + this._getAllKeysFast(objectStoreOrIndex, query, onSuccess, onError); } else { - this._getAllKeysUsingCursor(objectStoreOrIndex, query, resolve, reject); + this._getAllKeysUsingCursor(objectStoreOrIndex, query, onSuccess, onError); } } @@ -170,16 +162,20 @@ class Database { delete(objectStoreName, key) { return new Promise((resolve, reject) => { const transaction = this.transaction([objectStoreName], 'readwrite'); + transaction.onerror = (e) => reject(e.target.error); + transaction.oncomplete = () => resolve(); const objectStore = transaction.objectStore(objectStoreName); - const request = objectStore.delete(key); - request.onerror = (e) => reject(e.target.error); - request.onsuccess = () => resolve(); + objectStore.delete(key); + transaction.commit(); }); } bulkDelete(objectStoreName, indexName, query, filterKeys=null, onProgress=null) { return new Promise((resolve, reject) => { const transaction = this.transaction([objectStoreName], 'readwrite'); + transaction.onerror = (e) => reject(e.target.error); + transaction.oncomplete = () => resolve(); + const objectStore = transaction.objectStore(objectStoreName); const objectStoreOrIndex = indexName !== null ? objectStore.index(indexName) : objectStore; @@ -188,7 +184,8 @@ class Database { if (typeof filterKeys === 'function') { keys = filterKeys(keys); } - this._bulkDeleteInternal(objectStore, keys, onProgress, resolve, reject); + this._bulkDeleteInternal(objectStore, keys, onProgress); + transaction.commit(); } catch (e) { reject(e); } @@ -198,16 +195,6 @@ class Database { }); } - persistData(objectStoreName) { - return new Promise((resolve, reject) => { - const transaction = this.transaction([objectStoreName], 'readonly'); - const objectStore = transaction.objectStore(objectStoreName); - const cursor = objectStore.openCursor(); - cursor.onerror = (e) => reject(e.target.error); - cursor.onsuccess = () => resolve(); - }); - } - static deleteDatabase(databaseName) { return new Promise((resolve, reject) => { const request = indexedDB.deleteDatabase(databaseName); @@ -266,77 +253,68 @@ class Database { return false; } - _getAllFast(objectStoreOrIndex, query, resolve, reject, data) { + _getAllFast(objectStoreOrIndex, query, onSuccess, onReject, data) { const request = objectStoreOrIndex.getAll(query); - request.onerror = (e) => reject(e.target.error, data); - request.onsuccess = (e) => resolve(e.target.result, data); + request.onerror = (e) => onReject(e.target.error, data); + request.onsuccess = (e) => onSuccess(e.target.result, data); } - _getAllUsingCursor(objectStoreOrIndex, query, resolve, reject, data) { + _getAllUsingCursor(objectStoreOrIndex, query, onSuccess, onReject, data) { const results = []; const request = objectStoreOrIndex.openCursor(query, 'next'); - request.onerror = (e) => reject(e.target.error, data); + request.onerror = (e) => onReject(e.target.error, data); request.onsuccess = (e) => { const cursor = e.target.result; if (cursor) { results.push(cursor.value); cursor.continue(); } else { - resolve(results, data); + onSuccess(results, data); } }; } - _getAllKeysFast(objectStoreOrIndex, query, resolve, reject) { + _getAllKeysFast(objectStoreOrIndex, query, onSuccess, onError) { const request = objectStoreOrIndex.getAllKeys(query); - request.onerror = (e) => reject(e.target.error); - request.onsuccess = (e) => resolve(e.target.result); + request.onerror = (e) => onError(e.target.error); + request.onsuccess = (e) => onSuccess(e.target.result); } - _getAllKeysUsingCursor(objectStoreOrIndex, query, resolve, reject) { + _getAllKeysUsingCursor(objectStoreOrIndex, query, onSuccess, onError) { const results = []; const request = objectStoreOrIndex.openKeyCursor(query, 'next'); - request.onerror = (e) => reject(e.target.error); + request.onerror = (e) => onError(e.target.error); request.onsuccess = (e) => { const cursor = e.target.result; if (cursor) { results.push(cursor.primaryKey); cursor.continue(); } else { - resolve(results); + onSuccess(results); } }; } - _bulkDeleteInternal(objectStore, keys, onProgress, resolve, reject) { + _bulkDeleteInternal(objectStore, keys, onProgress) { const count = keys.length; - if (count === 0) { - resolve(); - return; - } + if (count === 0) { return; } let completedCount = 0; - const hasProgress = (typeof onProgress === 'function'); - - const onError = (e) => reject(e.target.error); const onSuccess = () => { ++completedCount; - if (hasProgress) { - try { - onProgress(completedCount, count); - } catch (e) { - // NOP - } - } - if (completedCount >= count) { - resolve(); + try { + onProgress(completedCount, count); + } catch (e) { + // NOP } }; + const hasProgress = (typeof onProgress === 'function'); for (const key of keys) { const request = objectStore.delete(key); - request.onerror = onError; - request.onsuccess = onSuccess; + if (hasProgress) { + request.onsuccess = onSuccess; + } } } } diff --git a/ext/js/language/dictionary-database.js b/ext/js/language/dictionary-database.js index 62300676..6b235fb6 100644 --- a/ext/js/language/dictionary-database.js +++ b/ext/js/language/dictionary-database.js @@ -317,10 +317,6 @@ class DictionaryDatabase { return this._db.bulkAdd(objectStoreName, items, start, count); } - persistData(objectStoreName) { - return this._db.persistData(objectStoreName); - } - // Private _findMultiBulk(objectStoreName, indexNames, items, createQuery, predicate, createResult) { diff --git a/ext/js/language/dictionary-importer.js b/ext/js/language/dictionary-importer.js index 8d6dcb33..89417ca6 100644 --- a/ext/js/language/dictionary-importer.js +++ b/ext/js/language/dictionary-importer.js @@ -149,10 +149,6 @@ class DictionaryImporter { this._progressData.index += count; this._progress(); } - - // This function is required in order to make the added data persist after the worker is terminated. - // https://bugs.chromium.org/p/chromium/issues/detail?id=1237686 - await dictionaryDatabase.persistData(objectStoreName); }; await bulkAdd('terms', termList); -- cgit v1.2.3