void UniqueIDBDatabase::performPutOrAdd(uint64_t callbackIdentifier, const IDBResourceIdentifier& transactionIdentifier, uint64_t objectStoreIdentifier, const IDBKeyData& keyData, const ThreadSafeDataBuffer& valueData, IndexedDB::ObjectStoreOverwriteMode overwriteMode) { ASSERT(!isMainThread()); LOG(IndexedDB, "(db) UniqueIDBDatabase::performPutOrAdd"); ASSERT(m_backingStore); ASSERT(objectStoreIdentifier); IDBKeyData usedKey; IDBError error; auto objectStoreInfo = m_databaseInfo->infoForExistingObjectStore(objectStoreIdentifier); if (!objectStoreInfo) { error = IDBError(IDBExceptionCode::InvalidStateError, ASCIILiteral("Object store cannot be found in the backing store")); m_server.postDatabaseTaskReply(createCrossThreadTask(*this, &UniqueIDBDatabase::didPerformPutOrAdd, callbackIdentifier, error, usedKey)); return; } if (objectStoreInfo->autoIncrement() && !keyData.isValid()) { uint64_t keyNumber; error = m_backingStore->generateKeyNumber(transactionIdentifier, objectStoreIdentifier, keyNumber); if (!error.isNull()) { m_server.postDatabaseTaskReply(createCrossThreadTask(*this, &UniqueIDBDatabase::didPerformPutOrAdd, callbackIdentifier, error, usedKey)); return; } usedKey.setNumberValue(keyNumber); } else usedKey = keyData; if (overwriteMode == IndexedDB::ObjectStoreOverwriteMode::NoOverwrite) { bool keyExists; error = m_backingStore->keyExistsInObjectStore(transactionIdentifier, objectStoreIdentifier, usedKey, keyExists); if (error.isNull() && keyExists) error = IDBError(IDBExceptionCode::ConstraintError, ASCIILiteral("Key already exists in the object store")); if (!error.isNull()) { m_server.postDatabaseTaskReply(createCrossThreadTask(*this, &UniqueIDBDatabase::didPerformPutOrAdd, callbackIdentifier, error, usedKey)); return; } } // 3.4.1 Object Store Storage Operation // ...If a record already exists in store ... // then remove the record from store using the steps for deleting records from an object store... // This is important because formally deleting it from from the object store also removes it from the appropriate indexes. error = m_backingStore->deleteRange(transactionIdentifier, objectStoreIdentifier, usedKey); if (!error.isNull()) { m_server.postDatabaseTaskReply(createCrossThreadTask(*this, &UniqueIDBDatabase::didPerformPutOrAdd, callbackIdentifier, error, usedKey)); return; } error = m_backingStore->addRecord(transactionIdentifier, objectStoreIdentifier, usedKey, valueData); m_server.postDatabaseTaskReply(createCrossThreadTask(*this, &UniqueIDBDatabase::didPerformPutOrAdd, callbackIdentifier, error, usedKey)); }
QString QFieldPrivate::commonSqlDescription() const { QString rs; if (autoIncrement()) rs += QLatin1String(" AUTO_INCREMENT"); if (acceptsNull()) rs += QLatin1String(" NULL"); else rs += QLatin1String(" NOT NULL"); if (primaryKey()) rs += QLatin1String(" PRIMARY KEY"); return rs; }
RefPtr<WebCore::IDBRequest> IDBObjectStore::putOrAdd(JSC::ExecState& state, JSC::JSValue value, RefPtr<IDBKey> key, IndexedDB::ObjectStoreOverwriteMode overwriteMode, ExceptionCode& ec) { LOG(IndexedDB, "IDBObjectStore::putOrAdd"); if (m_transaction->isReadOnly()) { ec = static_cast<ExceptionCode>(IDBExceptionCode::ReadOnlyError); return nullptr; } if (!m_transaction->isActive()) { ec = static_cast<ExceptionCode>(IDBExceptionCode::TransactionInactiveError); return nullptr; } if (m_deleted) { ec = INVALID_STATE_ERR; return nullptr; } RefPtr<SerializedScriptValue> serializedValue = SerializedScriptValue::create(&state, value, nullptr, nullptr); if (state.hadException()) { ec = DATA_CLONE_ERR; return nullptr; } if (serializedValue->hasBlobURLs()) { // FIXME: Add Blob/File/FileList support ec = DATA_CLONE_ERR; return nullptr; } if (key && key->type() == KeyType::Invalid) { ec = static_cast<ExceptionCode>(IDBExceptionCode::DataError); return nullptr; } bool usesInlineKeys = !m_info.keyPath().isNull(); bool usesKeyGenerator = autoIncrement(); if (usesInlineKeys) { if (key) { ec = static_cast<ExceptionCode>(IDBExceptionCode::DataError); return nullptr; } RefPtr<IDBKey> keyPathKey = maybeCreateIDBKeyFromScriptValueAndKeyPath(state, value, m_info.keyPath()); if (keyPathKey && !keyPathKey->isValid()) { ec = static_cast<ExceptionCode>(IDBExceptionCode::DataError); return nullptr; } if (!keyPathKey) { if (usesKeyGenerator) { if (!canInjectIDBKeyIntoScriptValue(state, value, m_info.keyPath())) { ec = static_cast<ExceptionCode>(IDBExceptionCode::DataError); return nullptr; } } else { ec = static_cast<ExceptionCode>(IDBExceptionCode::DataError); return nullptr; } } if (keyPathKey) { ASSERT(!key); key = keyPathKey; } } else if (!usesKeyGenerator && !key) { ec = static_cast<ExceptionCode>(IDBExceptionCode::DataError); return nullptr; } auto context = scriptExecutionContextFromExecState(&state); if (!context) { ec = static_cast<ExceptionCode>(IDBExceptionCode::Unknown); return nullptr; } Ref<IDBRequest> request = m_transaction->requestPutOrAdd(*context, *this, key.get(), *serializedValue, overwriteMode); return adoptRef(request.leakRef()); }
IDBRequest* IDBObjectStore::put(ScriptState* scriptState, WebIDBPutMode putMode, IDBAny* source, const ScriptValue& value, IDBKey* key, ExceptionState& exceptionState) { if (isDeleted()) { exceptionState.throwDOMException(InvalidStateError, IDBDatabase::objectStoreDeletedErrorMessage); return nullptr; } if (m_transaction->isFinished() || m_transaction->isFinishing()) { exceptionState.throwDOMException(TransactionInactiveError, IDBDatabase::transactionFinishedErrorMessage); return nullptr; } if (!m_transaction->isActive()) { exceptionState.throwDOMException(TransactionInactiveError, IDBDatabase::transactionInactiveErrorMessage); return nullptr; } if (m_transaction->isReadOnly()) { exceptionState.throwDOMException(ReadOnlyError, IDBDatabase::transactionReadOnlyErrorMessage); return nullptr; } Vector<WebBlobInfo> blobInfo; RefPtr<SerializedScriptValue> serializedValue = SerializedScriptValueFactory::instance().create(scriptState->isolate(), value, &blobInfo, exceptionState); if (exceptionState.hadException()) return nullptr; // Keys that need to be extracted must be taken from a clone so that // side effects (i.e. getters) are not triggered. Construct the // clone lazily since the operation may be expensive. ScriptValue clone; const IDBKeyPath& keyPath = m_metadata.keyPath; const bool usesInLineKeys = !keyPath.isNull(); const bool hasKeyGenerator = autoIncrement(); if (putMode != WebIDBPutModeCursorUpdate && usesInLineKeys && key) { exceptionState.throwDOMException(DataError, "The object store uses in-line keys and the key parameter was provided."); return nullptr; } // This test logically belongs in IDBCursor, but must operate on the cloned value. if (putMode == WebIDBPutModeCursorUpdate && usesInLineKeys) { ASSERT(key); if (clone.isEmpty()) clone = deserializeScriptValue(scriptState, serializedValue.get(), &blobInfo); IDBKey* keyPathKey = ScriptValue::to<IDBKey*>(scriptState->isolate(), clone, exceptionState, keyPath); if (exceptionState.hadException()) return nullptr; if (!keyPathKey || !keyPathKey->isEqual(key)) { exceptionState.throwDOMException(DataError, "The effective object store of this cursor uses in-line keys and evaluating the key path of the value parameter results in a different value than the cursor's effective key."); return nullptr; } } if (!usesInLineKeys && !hasKeyGenerator && !key) { exceptionState.throwDOMException(DataError, "The object store uses out-of-line keys and has no key generator and the key parameter was not provided."); return nullptr; } if (usesInLineKeys) { if (clone.isEmpty()) clone = deserializeScriptValue(scriptState, serializedValue.get(), &blobInfo); IDBKey* keyPathKey = ScriptValue::to<IDBKey*>(scriptState->isolate(), clone, exceptionState, keyPath); if (exceptionState.hadException()) return nullptr; if (keyPathKey && !keyPathKey->isValid()) { exceptionState.throwDOMException(DataError, "Evaluating the object store's key path yielded a value that is not a valid key."); return nullptr; } if (!hasKeyGenerator && !keyPathKey) { exceptionState.throwDOMException(DataError, "Evaluating the object store's key path did not yield a value."); return nullptr; } if (hasKeyGenerator && !keyPathKey) { if (!canInjectIDBKeyIntoScriptValue(scriptState->isolate(), clone, keyPath)) { exceptionState.throwDOMException(DataError, "A generated key could not be inserted into the value."); return nullptr; } } if (keyPathKey) key = keyPathKey; } if (key && !key->isValid()) { exceptionState.throwDOMException(DataError, IDBDatabase::notValidKeyErrorMessage); return nullptr; } if (!backendDB()) { exceptionState.throwDOMException(InvalidStateError, IDBDatabase::databaseClosedErrorMessage); return nullptr; } Vector<int64_t> indexIds; HeapVector<IndexKeys> indexKeys; for (const auto& it : m_metadata.indexes) { if (clone.isEmpty()) clone = deserializeScriptValue(scriptState, serializedValue.get(), &blobInfo); IndexKeys keys; generateIndexKeysForValue(scriptState->isolate(), it.value, clone, &keys); indexIds.append(it.key); indexKeys.append(keys); } IDBRequest* request = IDBRequest::create(scriptState, source, m_transaction.get()); Vector<char> wireBytes; serializedValue->toWireBytes(wireBytes); RefPtr<SharedBuffer> valueBuffer = SharedBuffer::adoptVector(wireBytes); backendDB()->put(m_transaction->id(), id(), WebData(valueBuffer), blobInfo, key, static_cast<WebIDBPutMode>(putMode), WebIDBCallbacksImpl::create(request).leakPtr(), indexIds, indexKeys); return request; }
PassRefPtr<IDBRequest> IDBObjectStore::put(IDBDatabaseBackend::PutMode putMode, PassRefPtr<IDBAny> source, JSC::ExecState* state, Deprecated::ScriptValue& value, PassRefPtr<IDBKey> prpKey, ExceptionCode& ec) { RefPtr<IDBKey> key = prpKey; if (m_deleted) { ec = IDBDatabaseException::InvalidStateError; return 0; } if (!m_transaction->isActive()) { ec = IDBDatabaseException::TransactionInactiveError; return 0; } if (m_transaction->isReadOnly()) { ec = IDBDatabaseException::ReadOnlyError; return 0; } // FIXME: Expose the JS engine exception state through ScriptState. bool didThrow = false; RefPtr<SerializedScriptValue> serializedValue = SerializedScriptValue::serialize(value, state, nullptr, nullptr, didThrow); if (didThrow) { // Setting an explicit ExceptionCode here would defer handling the already thrown exception. return 0; } if (serializedValue->hasBlobURLs()) { // FIXME: Add Blob/File/FileList support ec = IDBDatabaseException::DataCloneError; return 0; } const IDBKeyPath& keyPath = m_metadata.keyPath; const bool usesInLineKeys = !keyPath.isNull(); const bool hasKeyGenerator = autoIncrement(); ScriptExecutionContext* context = scriptExecutionContextFromExecState(state); DOMRequestState requestState(context); if (putMode != IDBDatabaseBackend::CursorUpdate && usesInLineKeys && key) { ec = IDBDatabaseException::DataError; return 0; } if (!usesInLineKeys && !hasKeyGenerator && !key) { ec = IDBDatabaseException::DataError; return 0; } if (usesInLineKeys) { RefPtr<IDBKey> keyPathKey = createIDBKeyFromScriptValueAndKeyPath(&requestState, value, keyPath); if (keyPathKey && !keyPathKey->isValid()) { ec = IDBDatabaseException::DataError; return 0; } if (!hasKeyGenerator && !keyPathKey) { ec = IDBDatabaseException::DataError; return 0; } if (hasKeyGenerator && !keyPathKey) { if (!canInjectIDBKeyIntoScriptValue(&requestState, value, keyPath)) { ec = IDBDatabaseException::DataError; return 0; } } if (keyPathKey) key = keyPathKey; } if (key && !key->isValid()) { ec = IDBDatabaseException::DataError; return 0; } Vector<int64_t> indexIds; Vector<IndexKeys> indexKeys; for (IDBObjectStoreMetadata::IndexMap::const_iterator it = m_metadata.indexes.begin(); it != m_metadata.indexes.end(); ++it) { IndexKeys keys; generateIndexKeysForValue(&requestState, it->value, value, &keys); indexIds.append(it->key); indexKeys.append(keys); } RefPtr<IDBRequest> request = IDBRequest::create(context, source, m_transaction.get()); Vector<uint8_t> valueBytes = serializedValue->toWireBytes(); // This is a hack to account for disagreements about whether SerializedScriptValue should deal in Vector<uint8_t> or Vector<char>. // See https://lists.webkit.org/pipermail/webkit-dev/2013-February/023682.html Vector<char>* valueBytesSigned = reinterpret_cast<Vector<char>*>(&valueBytes); RefPtr<SharedBuffer> valueBuffer = SharedBuffer::adoptVector(*valueBytesSigned); backendDB()->put(m_transaction->id(), id(), valueBuffer, key.release(), static_cast<IDBDatabaseBackend::PutMode>(putMode), request, indexIds, indexKeys); return request.release(); }
PassRefPtr<IDBRequest> IDBObjectStore::put(IDBDatabaseBackend::PutMode putMode, PassRefPtr<IDBAny> source, JSC::ExecState* state, Deprecated::ScriptValue& value, PassRefPtr<IDBKey> prpKey, ExceptionCode& ec) { RefPtr<IDBKey> key = prpKey; if (m_deleted) { ec = IDBDatabaseException::InvalidStateError; return nullptr; } if (!m_transaction->isActive()) { ec = IDBDatabaseException::TransactionInactiveError; return nullptr; } if (m_transaction->isReadOnly()) { ec = IDBDatabaseException::ReadOnlyError; return nullptr; } RefPtr<SerializedScriptValue> serializedValue = SerializedScriptValue::create(state, value.jsValue(), nullptr, nullptr); if (state->hadException()) return nullptr; if (serializedValue->hasBlobURLs()) { // FIXME: Add Blob/File/FileList support ec = IDBDatabaseException::DataCloneError; return nullptr; } const IDBKeyPath& keyPath = m_metadata.keyPath; const bool usesInLineKeys = !keyPath.isNull(); const bool hasKeyGenerator = autoIncrement(); ScriptExecutionContext* context = scriptExecutionContextFromExecState(state); DOMRequestState requestState(context); if (putMode != IDBDatabaseBackend::CursorUpdate && usesInLineKeys && key) { ec = IDBDatabaseException::DataError; return nullptr; } if (!usesInLineKeys && !hasKeyGenerator && !key) { ec = IDBDatabaseException::DataError; return nullptr; } if (usesInLineKeys) { RefPtr<IDBKey> keyPathKey = createIDBKeyFromScriptValueAndKeyPath(requestState.exec(), value, keyPath); if (keyPathKey && !keyPathKey->isValid()) { ec = IDBDatabaseException::DataError; return nullptr; } if (!hasKeyGenerator && !keyPathKey) { ec = IDBDatabaseException::DataError; return nullptr; } if (hasKeyGenerator && !keyPathKey) { if (!canInjectIDBKeyIntoScriptValue(&requestState, value, keyPath)) { ec = IDBDatabaseException::DataError; return nullptr; } } if (keyPathKey) key = keyPathKey; } if (key && !key->isValid()) { ec = IDBDatabaseException::DataError; return nullptr; } Vector<int64_t> indexIds; Vector<IndexKeys> indexKeys; for (auto& index : m_metadata.indexes) { Vector<IDBKeyData> keyDatas; generateIndexKeysForValue(requestState.exec(), index.value, value, keyDatas); indexIds.append(index.key); // FIXME: Much of the Indexed DB code needs to use IDBKeyData directly to avoid wasteful conversions like this. Vector<RefPtr<IDBKey>> keys; for (auto& keyData : keyDatas) { RefPtr<IDBKey> key = keyData.maybeCreateIDBKey(); if (key) keys.append(key.release()); } indexKeys.append(keys); } RefPtr<IDBRequest> request = IDBRequest::create(context, source, m_transaction.get()); Vector<uint8_t> valueBytes = serializedValue->toWireBytes(); // This is a hack to account for disagreements about whether SerializedScriptValue should deal in Vector<uint8_t> or Vector<char>. // See https://lists.webkit.org/pipermail/webkit-dev/2013-February/023682.html Vector<char>* valueBytesSigned = reinterpret_cast<Vector<char>*>(&valueBytes); RefPtr<SharedBuffer> valueBuffer = SharedBuffer::adoptVector(*valueBytesSigned); backendDB()->put(m_transaction->id(), id(), valueBuffer, key.release(), static_cast<IDBDatabaseBackend::PutMode>(putMode), request, indexIds, indexKeys); return request.release(); }
RefPtr<IDBRequest> IDBObjectStore::putOrAdd(ExecState& state, JSValue value, RefPtr<IDBKey> key, IndexedDB::ObjectStoreOverwriteMode overwriteMode, InlineKeyCheck inlineKeyCheck, ExceptionCodeWithMessage& ec) { LOG(IndexedDB, "IDBObjectStore::putOrAdd"); ASSERT(currentThread() == m_transaction->database().originThreadID()); auto context = scriptExecutionContextFromExecState(&state); if (!context) { ec.code = IDBDatabaseException::UnknownError; ec.message = ASCIILiteral("Unable to store record in object store because it does not have a valid script execution context"); return nullptr; } // The IDB spec for several IDBObjectStore methods states that transaction related exceptions should fire before // the exception for an object store being deleted. // However, a handful of W3C IDB tests expect the deleted exception even though the transaction inactive exception also applies. // Additionally, Chrome and Edge agree with the test, as does Legacy IDB in WebKit. // Until this is sorted out, we'll agree with the test and the majority share browsers. if (m_deleted) { ec.code = IDBDatabaseException::InvalidStateError; ec.message = ASCIILiteral("Failed to store record in an IDBObjectStore: The object store has been deleted."); return nullptr; } if (!m_transaction->isActive()) { ec.code = IDBDatabaseException::TransactionInactiveError; ec.message = ASCIILiteral("Failed to store record in an IDBObjectStore: The transaction is inactive or finished."); return nullptr; } if (m_transaction->isReadOnly()) { ec.code = IDBDatabaseException::ReadOnlyError; ec.message = ASCIILiteral("Failed to store record in an IDBObjectStore: The transaction is read-only."); return nullptr; } RefPtr<SerializedScriptValue> serializedValue = SerializedScriptValue::create(&state, value, nullptr, nullptr); if (state.hadException()) { // Clear the DOM exception from the serializer so we can give a more targeted exception. state.clearException(); ec.code = IDBDatabaseException::DataCloneError; ec.message = ASCIILiteral("Failed to store record in an IDBObjectStore: An object could not be cloned."); return nullptr; } bool privateBrowsingEnabled = false; if (context->isDocument()) { if (auto* page = static_cast<Document*>(context)->page()) privateBrowsingEnabled = page->sessionID().isEphemeral(); } if (serializedValue->hasBlobURLs() && privateBrowsingEnabled) { // https://bugs.webkit.org/show_bug.cgi?id=156347 - Support Blobs in private browsing. ec.code = IDBDatabaseException::DataCloneError; ec.message = ASCIILiteral("Failed to store record in an IDBObjectStore: BlobURLs are not yet supported."); return nullptr; } if (key && !key->isValid()) { ec.code = IDBDatabaseException::DataError; ec.message = ASCIILiteral("Failed to store record in an IDBObjectStore: The parameter is not a valid key."); return nullptr; } bool usesInlineKeys = !m_info.keyPath().isNull(); bool usesKeyGenerator = autoIncrement(); if (usesInlineKeys && inlineKeyCheck == InlineKeyCheck::Perform) { if (key) { ec.code = IDBDatabaseException::DataError; ec.message = ASCIILiteral("Failed to store record in an IDBObjectStore: The object store uses in-line keys and the key parameter was provided."); return nullptr; } RefPtr<IDBKey> keyPathKey = maybeCreateIDBKeyFromScriptValueAndKeyPath(state, value, m_info.keyPath()); if (keyPathKey && !keyPathKey->isValid()) { ec.code = IDBDatabaseException::DataError; ec.message = ASCIILiteral("Failed to store record in an IDBObjectStore: Evaluating the object store's key path yielded a value that is not a valid key."); return nullptr; } if (!keyPathKey) { if (usesKeyGenerator) { if (!canInjectIDBKeyIntoScriptValue(state, value, m_info.keyPath())) { ec.code = IDBDatabaseException::DataError; return nullptr; } } else { ec.code = IDBDatabaseException::DataError; ec.message = ASCIILiteral("Failed to store record in an IDBObjectStore: Evaluating the object store's key path did not yield a value."); return nullptr; } } if (keyPathKey) { ASSERT(!key); key = keyPathKey; } } else if (!usesKeyGenerator && !key) { ec.code = IDBDatabaseException::DataError; ec.message = ASCIILiteral("Failed to store record in an IDBObjectStore: The object store uses out-of-line keys and has no key generator and the key parameter was not provided."); return nullptr; } return m_transaction->requestPutOrAdd(*context, *this, key.get(), *serializedValue, overwriteMode); }
RefPtr<IDBRequest> IDBObjectStore::putOrAdd(JSC::ExecState& state, JSC::JSValue value, RefPtr<IDBKey> key, IndexedDB::ObjectStoreOverwriteMode overwriteMode, InlineKeyCheck inlineKeyCheck, ExceptionCodeWithMessage& ec) { LOG(IndexedDB, "IDBObjectStore::putOrAdd"); if (!m_transaction->isActive()) { ec.code = IDBDatabaseException::TransactionInactiveError; ec.message = ASCIILiteral("Failed to store record in an IDBObjectStore: The transaction is inactive or finished."); return nullptr; } if (m_transaction->isReadOnly()) { ec.code = IDBDatabaseException::ReadOnlyError; ec.message = ASCIILiteral("Failed to store record in an IDBObjectStore: The transaction is read-only."); return nullptr; } if (m_deleted) { ec.code = IDBDatabaseException::InvalidStateError; return nullptr; } RefPtr<SerializedScriptValue> serializedValue = SerializedScriptValue::create(&state, value, nullptr, nullptr); if (state.hadException()) { ec.code = IDBDatabaseException::DataCloneError; ec.message = ASCIILiteral("Failed to store record in an IDBObjectStore: An object could not be cloned."); return nullptr; } if (serializedValue->hasBlobURLs()) { // FIXME: Add Blob/File/FileList support ec.code = IDBDatabaseException::DataCloneError; ec.message = ASCIILiteral("Failed to store record in an IDBObjectStore: BlobURLs are not yet supported."); return nullptr; } if (key && key->type() == KeyType::Invalid) { ec.code = IDBDatabaseException::DataError; return nullptr; } bool usesInlineKeys = !m_info.keyPath().isNull(); bool usesKeyGenerator = autoIncrement(); if (usesInlineKeys && inlineKeyCheck == InlineKeyCheck::Perform) { if (key) { ec.code = IDBDatabaseException::DataError; return nullptr; } RefPtr<IDBKey> keyPathKey = maybeCreateIDBKeyFromScriptValueAndKeyPath(state, value, m_info.keyPath()); if (keyPathKey && !keyPathKey->isValid()) { ec.code = IDBDatabaseException::DataError; return nullptr; } if (!keyPathKey) { if (usesKeyGenerator) { if (!canInjectIDBKeyIntoScriptValue(state, value, m_info.keyPath())) { ec.code = IDBDatabaseException::DataError; return nullptr; } } else { ec.code = IDBDatabaseException::DataError; return nullptr; } } if (keyPathKey) { ASSERT(!key); key = keyPathKey; } } else if (!usesKeyGenerator && !key) { ec.code = IDBDatabaseException::DataError; return nullptr; } auto context = scriptExecutionContextFromExecState(&state); if (!context) { ec.code = IDBDatabaseException::UnknownError; return nullptr; } Ref<IDBRequest> request = m_transaction->requestPutOrAdd(*context, *this, key.get(), *serializedValue, overwriteMode); return adoptRef(request.leakRef()); }