summaryrefslogtreecommitdiffstats
path: root/dom/indexedDB/IDBIndex.cpp
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /dom/indexedDB/IDBIndex.cpp
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/indexedDB/IDBIndex.cpp')
-rw-r--r--dom/indexedDB/IDBIndex.cpp637
1 files changed, 637 insertions, 0 deletions
diff --git a/dom/indexedDB/IDBIndex.cpp b/dom/indexedDB/IDBIndex.cpp
new file mode 100644
index 0000000000..2f77a1518c
--- /dev/null
+++ b/dom/indexedDB/IDBIndex.cpp
@@ -0,0 +1,637 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "IDBIndex.h"
+
+#include "IDBCursorType.h"
+#include "IDBDatabase.h"
+#include "IDBEvents.h"
+#include "IDBKeyRange.h"
+#include "IDBObjectStore.h"
+#include "IDBRequest.h"
+#include "IDBTransaction.h"
+#include "IndexedDatabase.h"
+#include "IndexedDatabaseInlines.h"
+#include "mozilla/ErrorResult.h"
+#include "mozilla/dom/indexedDB/PBackgroundIDBSharedTypes.h"
+#include "ProfilerHelpers.h"
+#include "ReportInternalError.h"
+
+// Include this last to avoid path problems on Windows.
+#include "ActorsChild.h"
+
+namespace mozilla::dom {
+
+using namespace mozilla::dom::indexedDB;
+
+namespace {
+
+MovingNotNull<RefPtr<IDBRequest>> GenerateRequest(JSContext* aCx,
+ IDBIndex* aIndex) {
+ MOZ_ASSERT(aIndex);
+ aIndex->AssertIsOnOwningThread();
+
+ auto transaction = aIndex->ObjectStore()->AcquireTransaction();
+ auto* const database = transaction->Database();
+
+ return IDBRequest::Create(aCx, aIndex, database, std::move(transaction));
+}
+
+} // namespace
+
+IDBIndex::IDBIndex(IDBObjectStore* aObjectStore, const IndexMetadata* aMetadata)
+ : mObjectStore(aObjectStore),
+ mCachedKeyPath(JS::UndefinedValue()),
+ mMetadata(aMetadata),
+ mId(aMetadata->id()),
+ mRooted(false) {
+ MOZ_ASSERT(aObjectStore);
+ aObjectStore->AssertIsOnOwningThread();
+ MOZ_ASSERT(aMetadata);
+}
+
+IDBIndex::~IDBIndex() {
+ AssertIsOnOwningThread();
+
+ if (mRooted) {
+ mozilla::DropJSObjects(this);
+ }
+}
+
+RefPtr<IDBIndex> IDBIndex::Create(IDBObjectStore* aObjectStore,
+ const IndexMetadata& aMetadata) {
+ MOZ_ASSERT(aObjectStore);
+ aObjectStore->AssertIsOnOwningThread();
+
+ return new IDBIndex(aObjectStore, &aMetadata);
+}
+
+#ifdef DEBUG
+
+void IDBIndex::AssertIsOnOwningThread() const {
+ MOZ_ASSERT(mObjectStore);
+ mObjectStore->AssertIsOnOwningThread();
+}
+
+#endif // DEBUG
+
+RefPtr<IDBRequest> IDBIndex::OpenCursor(JSContext* aCx,
+ JS::Handle<JS::Value> aRange,
+ IDBCursorDirection aDirection,
+ ErrorResult& aRv) {
+ AssertIsOnOwningThread();
+
+ return OpenCursorInternal(/* aKeysOnly */ false, aCx, aRange, aDirection,
+ aRv);
+}
+
+RefPtr<IDBRequest> IDBIndex::OpenKeyCursor(JSContext* aCx,
+ JS::Handle<JS::Value> aRange,
+ IDBCursorDirection aDirection,
+ ErrorResult& aRv) {
+ AssertIsOnOwningThread();
+
+ return OpenCursorInternal(/* aKeysOnly */ true, aCx, aRange, aDirection, aRv);
+}
+
+RefPtr<IDBRequest> IDBIndex::Get(JSContext* aCx, JS::Handle<JS::Value> aKey,
+ ErrorResult& aRv) {
+ AssertIsOnOwningThread();
+
+ return GetInternal(/* aKeyOnly */ false, aCx, aKey, aRv);
+}
+
+RefPtr<IDBRequest> IDBIndex::GetKey(JSContext* aCx, JS::Handle<JS::Value> aKey,
+ ErrorResult& aRv) {
+ AssertIsOnOwningThread();
+
+ return GetInternal(/* aKeyOnly */ true, aCx, aKey, aRv);
+}
+
+RefPtr<IDBRequest> IDBIndex::GetAll(JSContext* aCx, JS::Handle<JS::Value> aKey,
+ const Optional<uint32_t>& aLimit,
+ ErrorResult& aRv) {
+ AssertIsOnOwningThread();
+
+ return GetAllInternal(/* aKeysOnly */ false, aCx, aKey, aLimit, aRv);
+}
+
+RefPtr<IDBRequest> IDBIndex::GetAllKeys(JSContext* aCx,
+ JS::Handle<JS::Value> aKey,
+ const Optional<uint32_t>& aLimit,
+ ErrorResult& aRv) {
+ AssertIsOnOwningThread();
+
+ return GetAllInternal(/* aKeysOnly */ true, aCx, aKey, aLimit, aRv);
+}
+
+void IDBIndex::RefreshMetadata(bool aMayDelete) {
+ AssertIsOnOwningThread();
+ MOZ_ASSERT_IF(mDeletedMetadata, mMetadata == mDeletedMetadata.get());
+
+ const auto& indexes = mObjectStore->Spec().indexes();
+ const auto foundIt = std::find_if(
+ indexes.cbegin(), indexes.cend(),
+ [id = Id()](const auto& metadata) { return metadata.id() == id; });
+ const bool found = foundIt != indexes.cend();
+
+ MOZ_ASSERT_IF(!aMayDelete && !mDeletedMetadata, found);
+
+ if (found) {
+ mMetadata = &*foundIt;
+ MOZ_ASSERT(mMetadata != mDeletedMetadata.get());
+ mDeletedMetadata = nullptr;
+ } else {
+ NoteDeletion();
+ }
+}
+
+void IDBIndex::NoteDeletion() {
+ AssertIsOnOwningThread();
+ MOZ_ASSERT(mMetadata);
+ MOZ_ASSERT(Id() == mMetadata->id());
+
+ if (mDeletedMetadata) {
+ MOZ_ASSERT(mMetadata == mDeletedMetadata.get());
+ return;
+ }
+
+ mDeletedMetadata = MakeUnique<IndexMetadata>(*mMetadata);
+
+ mMetadata = mDeletedMetadata.get();
+}
+
+const nsString& IDBIndex::Name() const {
+ AssertIsOnOwningThread();
+ MOZ_ASSERT(mMetadata);
+
+ return mMetadata->name();
+}
+
+void IDBIndex::SetName(const nsAString& aName, ErrorResult& aRv) {
+ AssertIsOnOwningThread();
+
+ const auto& transaction = mObjectStore->TransactionRef();
+
+ if (transaction.GetMode() != IDBTransaction::Mode::VersionChange ||
+ mDeletedMetadata) {
+ aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
+ return;
+ }
+
+ if (!transaction.IsActive()) {
+ aRv.Throw(NS_ERROR_DOM_INDEXEDDB_TRANSACTION_INACTIVE_ERR);
+ return;
+ }
+
+ if (aName == mMetadata->name()) {
+ return;
+ }
+
+ // Cache logging string of this index before renaming.
+ const LoggingString loggingOldIndex(this);
+
+ const int64_t indexId = Id();
+
+ nsresult rv =
+ transaction.Database()->RenameIndex(mObjectStore->Id(), indexId, aName);
+
+ if (NS_FAILED(rv)) {
+ aRv.Throw(rv);
+ return;
+ }
+
+ // Don't do this in the macro because we always need to increment the serial
+ // number to keep in sync with the parent.
+ const uint64_t requestSerialNumber = IDBRequest::NextSerialNumber();
+
+ IDB_LOG_MARK_CHILD_TRANSACTION_REQUEST(
+ "database(%s).transaction(%s).objectStore(%s).index(%s)."
+ "rename(%s)",
+ "IDBIndex.rename(%.0s%.0s%.0s%.0s%.0s)",
+ transaction.LoggingSerialNumber(), requestSerialNumber,
+ IDB_LOG_STRINGIFY(transaction.Database()), IDB_LOG_STRINGIFY(transaction),
+ IDB_LOG_STRINGIFY(mObjectStore), loggingOldIndex.get(),
+ IDB_LOG_STRINGIFY(this));
+
+ mObjectStore->MutableTransactionRef().RenameIndex(mObjectStore, indexId,
+ aName);
+}
+
+bool IDBIndex::Unique() const {
+ AssertIsOnOwningThread();
+ MOZ_ASSERT(mMetadata);
+
+ return mMetadata->unique();
+}
+
+bool IDBIndex::MultiEntry() const {
+ AssertIsOnOwningThread();
+ MOZ_ASSERT(mMetadata);
+
+ return mMetadata->multiEntry();
+}
+
+bool IDBIndex::LocaleAware() const {
+ AssertIsOnOwningThread();
+ MOZ_ASSERT(mMetadata);
+
+ return mMetadata->locale().IsEmpty();
+}
+
+const indexedDB::KeyPath& IDBIndex::GetKeyPath() const {
+ AssertIsOnOwningThread();
+ MOZ_ASSERT(mMetadata);
+
+ return mMetadata->keyPath();
+}
+
+void IDBIndex::GetLocale(nsString& aLocale) const {
+ AssertIsOnOwningThread();
+ MOZ_ASSERT(mMetadata);
+
+ if (mMetadata->locale().IsEmpty()) {
+ SetDOMStringToNull(aLocale);
+ } else {
+ CopyASCIItoUTF16(mMetadata->locale(), aLocale);
+ }
+}
+
+const nsCString& IDBIndex::Locale() const {
+ AssertIsOnOwningThread();
+ MOZ_ASSERT(mMetadata);
+
+ return mMetadata->locale();
+}
+
+bool IDBIndex::IsAutoLocale() const {
+ AssertIsOnOwningThread();
+ MOZ_ASSERT(mMetadata);
+
+ return mMetadata->autoLocale();
+}
+
+nsIGlobalObject* IDBIndex::GetParentObject() const {
+ AssertIsOnOwningThread();
+
+ return mObjectStore->GetParentObject();
+}
+
+void IDBIndex::GetKeyPath(JSContext* aCx, JS::MutableHandle<JS::Value> aResult,
+ ErrorResult& aRv) {
+ AssertIsOnOwningThread();
+
+ if (!mCachedKeyPath.isUndefined()) {
+ MOZ_ASSERT(mRooted);
+ aResult.set(mCachedKeyPath);
+ return;
+ }
+
+ MOZ_ASSERT(!mRooted);
+
+ aRv = GetKeyPath().ToJSVal(aCx, mCachedKeyPath);
+ if (NS_WARN_IF(aRv.Failed())) {
+ return;
+ }
+
+ if (mCachedKeyPath.isGCThing()) {
+ mozilla::HoldJSObjects(this);
+ mRooted = true;
+ }
+
+ aResult.set(mCachedKeyPath);
+}
+
+RefPtr<IDBRequest> IDBIndex::GetInternal(bool aKeyOnly, JSContext* aCx,
+ JS::Handle<JS::Value> aKey,
+ ErrorResult& aRv) {
+ AssertIsOnOwningThread();
+
+ if (mDeletedMetadata) {
+ aRv.Throw(NS_ERROR_DOM_INDEXEDDB_NOT_ALLOWED_ERR);
+ return nullptr;
+ }
+
+ const auto& transaction = mObjectStore->TransactionRef();
+ if (!transaction.IsActive()) {
+ aRv.Throw(NS_ERROR_DOM_INDEXEDDB_TRANSACTION_INACTIVE_ERR);
+ return nullptr;
+ }
+
+ RefPtr<IDBKeyRange> keyRange;
+ IDBKeyRange::FromJSVal(aCx, aKey, &keyRange, aRv);
+ if (NS_WARN_IF(aRv.Failed())) {
+ return nullptr;
+ }
+
+ if (!keyRange) {
+ // Must specify a key or keyRange for get() and getKey().
+ aRv.Throw(NS_ERROR_DOM_INDEXEDDB_KEY_ERR);
+ return nullptr;
+ }
+
+ const int64_t objectStoreId = mObjectStore->Id();
+ const int64_t indexId = Id();
+
+ SerializedKeyRange serializedKeyRange;
+ keyRange->ToSerialized(serializedKeyRange);
+
+ RequestParams params;
+
+ if (aKeyOnly) {
+ params = IndexGetKeyParams(objectStoreId, indexId, serializedKeyRange);
+ } else {
+ params = IndexGetParams(objectStoreId, indexId, serializedKeyRange);
+ }
+
+ auto request = GenerateRequest(aCx, this).unwrap();
+
+ if (aKeyOnly) {
+ IDB_LOG_MARK_CHILD_TRANSACTION_REQUEST(
+ "database(%s).transaction(%s).objectStore(%s).index(%s)."
+ "getKey(%s)",
+ "IDBIndex.getKey(%.0s%.0s%.0s%.0s%.0s)",
+ transaction.LoggingSerialNumber(), request->LoggingSerialNumber(),
+ IDB_LOG_STRINGIFY(transaction.Database()),
+ IDB_LOG_STRINGIFY(transaction), IDB_LOG_STRINGIFY(mObjectStore),
+ IDB_LOG_STRINGIFY(this), IDB_LOG_STRINGIFY(keyRange));
+ } else {
+ IDB_LOG_MARK_CHILD_TRANSACTION_REQUEST(
+ "database(%s).transaction(%s).objectStore(%s).index(%s)."
+ "get(%s)",
+ "IDBIndex.get(%.0s%.0s%.0s%.0s%.0s)", transaction.LoggingSerialNumber(),
+ request->LoggingSerialNumber(),
+ IDB_LOG_STRINGIFY(transaction.Database()),
+ IDB_LOG_STRINGIFY(transaction), IDB_LOG_STRINGIFY(mObjectStore),
+ IDB_LOG_STRINGIFY(this), IDB_LOG_STRINGIFY(keyRange));
+ }
+
+ auto& mutableTransaction = mObjectStore->MutableTransactionRef();
+
+ // TODO: This is necessary to preserve request ordering only. Proper
+ // sequencing of requests should be done in a more sophisticated manner that
+ // doesn't require invalidating cursor caches (Bug 1580499).
+ mutableTransaction.InvalidateCursorCaches();
+
+ mutableTransaction.StartRequest(request, params);
+
+ return request;
+}
+
+RefPtr<IDBRequest> IDBIndex::GetAllInternal(bool aKeysOnly, JSContext* aCx,
+ JS::Handle<JS::Value> aKey,
+ const Optional<uint32_t>& aLimit,
+ ErrorResult& aRv) {
+ AssertIsOnOwningThread();
+
+ if (mDeletedMetadata) {
+ aRv.Throw(NS_ERROR_DOM_INDEXEDDB_NOT_ALLOWED_ERR);
+ return nullptr;
+ }
+
+ const auto& transaction = mObjectStore->TransactionRef();
+ if (!transaction.IsActive()) {
+ aRv.Throw(NS_ERROR_DOM_INDEXEDDB_TRANSACTION_INACTIVE_ERR);
+ return nullptr;
+ }
+
+ RefPtr<IDBKeyRange> keyRange;
+ IDBKeyRange::FromJSVal(aCx, aKey, &keyRange, aRv);
+ if (NS_WARN_IF(aRv.Failed())) {
+ return nullptr;
+ }
+
+ const int64_t objectStoreId = mObjectStore->Id();
+ const int64_t indexId = Id();
+
+ Maybe<SerializedKeyRange> optionalKeyRange;
+ if (keyRange) {
+ SerializedKeyRange serializedKeyRange;
+ keyRange->ToSerialized(serializedKeyRange);
+ optionalKeyRange.emplace(serializedKeyRange);
+ }
+
+ const uint32_t limit = aLimit.WasPassed() ? aLimit.Value() : 0;
+
+ const auto& params =
+ aKeysOnly ? RequestParams{IndexGetAllKeysParams(objectStoreId, indexId,
+ optionalKeyRange, limit)}
+ : RequestParams{IndexGetAllParams(objectStoreId, indexId,
+ optionalKeyRange, limit)};
+
+ auto request = GenerateRequest(aCx, this).unwrap();
+
+ if (aKeysOnly) {
+ IDB_LOG_MARK_CHILD_TRANSACTION_REQUEST(
+ "database(%s).transaction(%s).objectStore(%s).index(%s)."
+ "getAllKeys(%s, %s)",
+ "IDBIndex.getAllKeys(%.0s%.0s%.0s%.0s%.0s%.0s)",
+ transaction.LoggingSerialNumber(), request->LoggingSerialNumber(),
+ IDB_LOG_STRINGIFY(transaction.Database()),
+ IDB_LOG_STRINGIFY(transaction), IDB_LOG_STRINGIFY(mObjectStore),
+ IDB_LOG_STRINGIFY(this), IDB_LOG_STRINGIFY(keyRange),
+ IDB_LOG_STRINGIFY(aLimit));
+ } else {
+ IDB_LOG_MARK_CHILD_TRANSACTION_REQUEST(
+ "database(%s).transaction(%s).objectStore(%s).index(%s)."
+ "getAll(%s, %s)",
+ "IDBIndex.getAll(%.0s%.0s%.0s%.0s%.0s%.0s)",
+ transaction.LoggingSerialNumber(), request->LoggingSerialNumber(),
+ IDB_LOG_STRINGIFY(transaction.Database()),
+ IDB_LOG_STRINGIFY(transaction), IDB_LOG_STRINGIFY(mObjectStore),
+ IDB_LOG_STRINGIFY(this), IDB_LOG_STRINGIFY(keyRange),
+ IDB_LOG_STRINGIFY(aLimit));
+ }
+
+ auto& mutableTransaction = mObjectStore->MutableTransactionRef();
+
+ // TODO: This is necessary to preserve request ordering only. Proper
+ // sequencing of requests should be done in a more sophisticated manner that
+ // doesn't require invalidating cursor caches (Bug 1580499).
+ mutableTransaction.InvalidateCursorCaches();
+
+ mutableTransaction.StartRequest(request, params);
+
+ return request;
+}
+
+RefPtr<IDBRequest> IDBIndex::OpenCursorInternal(bool aKeysOnly, JSContext* aCx,
+ JS::Handle<JS::Value> aRange,
+ IDBCursorDirection aDirection,
+ ErrorResult& aRv) {
+ AssertIsOnOwningThread();
+
+ if (mDeletedMetadata) {
+ aRv.Throw(NS_ERROR_DOM_INDEXEDDB_NOT_ALLOWED_ERR);
+ return nullptr;
+ }
+
+ const auto& transaction = mObjectStore->TransactionRef();
+ if (!transaction.IsActive()) {
+ aRv.Throw(NS_ERROR_DOM_INDEXEDDB_TRANSACTION_INACTIVE_ERR);
+ return nullptr;
+ }
+
+ RefPtr<IDBKeyRange> keyRange;
+ IDBKeyRange::FromJSVal(aCx, aRange, &keyRange, aRv);
+ if (NS_WARN_IF(aRv.Failed())) {
+ return nullptr;
+ }
+
+ const int64_t objectStoreId = mObjectStore->Id();
+ const int64_t indexId = Id();
+
+ Maybe<SerializedKeyRange> optionalKeyRange;
+
+ if (keyRange) {
+ SerializedKeyRange serializedKeyRange;
+ keyRange->ToSerialized(serializedKeyRange);
+
+ optionalKeyRange.emplace(std::move(serializedKeyRange));
+ }
+
+ const CommonIndexOpenCursorParams commonIndexParams = {
+ {objectStoreId, std::move(optionalKeyRange), aDirection}, indexId};
+
+ const auto params =
+ aKeysOnly ? OpenCursorParams{IndexOpenKeyCursorParams{commonIndexParams}}
+ : OpenCursorParams{IndexOpenCursorParams{commonIndexParams}};
+
+ auto request = GenerateRequest(aCx, this).unwrap();
+
+ if (aKeysOnly) {
+ IDB_LOG_MARK_CHILD_TRANSACTION_REQUEST(
+ "database(%s).transaction(%s).objectStore(%s).index(%s)."
+ "openKeyCursor(%s, %s)",
+ "IDBIndex.openKeyCursor(%.0s%.0s%.0s%.0s%.0s%.0s)",
+ transaction.LoggingSerialNumber(), request->LoggingSerialNumber(),
+ IDB_LOG_STRINGIFY(transaction.Database()),
+ IDB_LOG_STRINGIFY(transaction), IDB_LOG_STRINGIFY(mObjectStore),
+ IDB_LOG_STRINGIFY(this), IDB_LOG_STRINGIFY(keyRange),
+ IDB_LOG_STRINGIFY(aDirection));
+ } else {
+ IDB_LOG_MARK_CHILD_TRANSACTION_REQUEST(
+ "database(%s).transaction(%s).objectStore(%s).index(%s)."
+ "openCursor(%s, %s)",
+ "IDBIndex.openCursor(%.0s%.0s%.0s%.0s%.0s%.0s)",
+ transaction.LoggingSerialNumber(), request->LoggingSerialNumber(),
+ IDB_LOG_STRINGIFY(transaction.Database()),
+ IDB_LOG_STRINGIFY(transaction), IDB_LOG_STRINGIFY(mObjectStore),
+ IDB_LOG_STRINGIFY(this), IDB_LOG_STRINGIFY(keyRange),
+ IDB_LOG_STRINGIFY(aDirection));
+ }
+
+ const auto actor =
+ aKeysOnly
+ ? static_cast<SafeRefPtr<BackgroundCursorChildBase>>(
+ MakeSafeRefPtr<BackgroundCursorChild<IDBCursorType::IndexKey>>(
+ request, this, aDirection))
+ : MakeSafeRefPtr<BackgroundCursorChild<IDBCursorType::Index>>(
+ request, this, aDirection);
+
+ auto& mutableTransaction = mObjectStore->MutableTransactionRef();
+
+ // TODO: This is necessary to preserve request ordering only. Proper
+ // sequencing of requests should be done in a more sophisticated manner that
+ // doesn't require invalidating cursor caches (Bug 1580499).
+ mutableTransaction.InvalidateCursorCaches();
+
+ mutableTransaction.OpenCursor(*actor, params);
+
+ return request;
+}
+
+RefPtr<IDBRequest> IDBIndex::Count(JSContext* aCx, JS::Handle<JS::Value> aKey,
+ ErrorResult& aRv) {
+ AssertIsOnOwningThread();
+
+ if (mDeletedMetadata) {
+ aRv.Throw(NS_ERROR_DOM_INDEXEDDB_NOT_ALLOWED_ERR);
+ return nullptr;
+ }
+
+ const auto& transaction = mObjectStore->TransactionRef();
+ if (!transaction.IsActive()) {
+ aRv.Throw(NS_ERROR_DOM_INDEXEDDB_TRANSACTION_INACTIVE_ERR);
+ return nullptr;
+ }
+
+ RefPtr<IDBKeyRange> keyRange;
+ IDBKeyRange::FromJSVal(aCx, aKey, &keyRange, aRv);
+ if (aRv.Failed()) {
+ return nullptr;
+ }
+
+ IndexCountParams params;
+ params.objectStoreId() = mObjectStore->Id();
+ params.indexId() = Id();
+
+ if (keyRange) {
+ SerializedKeyRange serializedKeyRange;
+ keyRange->ToSerialized(serializedKeyRange);
+ params.optionalKeyRange().emplace(serializedKeyRange);
+ }
+
+ auto request = GenerateRequest(aCx, this).unwrap();
+
+ IDB_LOG_MARK_CHILD_TRANSACTION_REQUEST(
+ "database(%s).transaction(%s).objectStore(%s).index(%s)."
+ "count(%s)",
+ "IDBIndex.count(%.0s%.0s%.0s%.0s%.0s)", transaction.LoggingSerialNumber(),
+ request->LoggingSerialNumber(), IDB_LOG_STRINGIFY(transaction.Database()),
+ IDB_LOG_STRINGIFY(transaction), IDB_LOG_STRINGIFY(mObjectStore),
+ IDB_LOG_STRINGIFY(this), IDB_LOG_STRINGIFY(keyRange));
+
+ auto& mutableTransaction = mObjectStore->MutableTransactionRef();
+
+ // TODO: This is necessary to preserve request ordering only. Proper
+ // sequencing of requests should be done in a more sophisticated manner that
+ // doesn't require invalidating cursor caches (Bug 1580499).
+ mutableTransaction.InvalidateCursorCaches();
+
+ mutableTransaction.StartRequest(request, params);
+
+ return request;
+}
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(IDBIndex)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(IDBIndex)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(IDBIndex)
+ NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+ NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+NS_IMPL_CYCLE_COLLECTION_CLASS(IDBIndex)
+
+NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(IDBIndex)
+ NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
+ NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mCachedKeyPath)
+NS_IMPL_CYCLE_COLLECTION_TRACE_END
+
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(IDBIndex)
+ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mObjectStore)
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
+
+NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(IDBIndex)
+ NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
+
+ // Don't unlink mObjectStore!
+
+ tmp->mCachedKeyPath.setUndefined();
+
+ if (tmp->mRooted) {
+ mozilla::DropJSObjects(tmp);
+ tmp->mRooted = false;
+ }
+NS_IMPL_CYCLE_COLLECTION_UNLINK_END
+
+JSObject* IDBIndex::WrapObject(JSContext* aCx,
+ JS::Handle<JSObject*> aGivenProto) {
+ return IDBIndex_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+} // namespace mozilla::dom