IDBError MemoryIDBBackingStore::getCount(const IDBResourceIdentifier& transactionIdentifier, uint64_t objectStoreIdentifier, uint64_t indexIdentifier, const IDBKeyRangeData& range, uint64_t& outCount) { LOG(IndexedDB, "MemoryIDBBackingStore::getCount"); ASSERT(objectStoreIdentifier); if (!m_transactions.contains(transactionIdentifier)) return { IDBDatabaseException::UnknownError, ASCIILiteral("No backing store transaction found to get count") }; MemoryObjectStore* objectStore = m_objectStoresByIdentifier.get(objectStoreIdentifier); if (!objectStore) return { IDBDatabaseException::UnknownError, ASCIILiteral("No backing store object store found") }; outCount = objectStore->countForKeyRange(indexIdentifier, range); return { }; }