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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /dom/indexedDB/IDBIndex.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'dom/indexedDB/IDBIndex.cpp')
-rw-r--r--dom/indexedDB/IDBIndex.cpp679
1 files changed, 679 insertions, 0 deletions
diff --git a/dom/indexedDB/IDBIndex.cpp b/dom/indexedDB/IDBIndex.cpp
new file mode 100644
index 000000000..657e744c9
--- /dev/null
+++ b/dom/indexedDB/IDBIndex.cpp
@@ -0,0 +1,679 @@
+/* -*- 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 "FileInfo.h"
+#include "IDBCursor.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 {
+namespace dom {
+
+namespace {
+
+already_AddRefed<IDBRequest>
+GenerateRequest(JSContext* aCx, IDBIndex* aIndex)
+{
+ MOZ_ASSERT(aIndex);
+ aIndex->AssertIsOnOwningThread();
+
+ IDBTransaction* transaction = aIndex->ObjectStore()->Transaction();
+
+ RefPtr<IDBRequest> request =
+ IDBRequest::Create(aCx, aIndex, transaction->Database(), transaction);
+ MOZ_ASSERT(request);
+
+ return request.forget();
+}
+
+} // 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) {
+ mCachedKeyPath.setUndefined();
+ mozilla::DropJSObjects(this);
+ }
+}
+
+already_AddRefed<IDBIndex>
+IDBIndex::Create(IDBObjectStore* aObjectStore,
+ const IndexMetadata& aMetadata)
+{
+ MOZ_ASSERT(aObjectStore);
+ aObjectStore->AssertIsOnOwningThread();
+
+ RefPtr<IDBIndex> index = new IDBIndex(aObjectStore, &aMetadata);
+
+ return index.forget();
+}
+
+#ifdef DEBUG
+
+void
+IDBIndex::AssertIsOnOwningThread() const
+{
+ MOZ_ASSERT(mObjectStore);
+ mObjectStore->AssertIsOnOwningThread();
+}
+
+#endif // DEBUG
+
+void
+IDBIndex::RefreshMetadata(bool aMayDelete)
+{
+ AssertIsOnOwningThread();
+ MOZ_ASSERT_IF(mDeletedMetadata, mMetadata == mDeletedMetadata);
+
+ const nsTArray<IndexMetadata>& indexes = mObjectStore->Spec().indexes();
+
+ bool found = false;
+
+ for (uint32_t count = indexes.Length(), index = 0;
+ index < count;
+ index++) {
+ const IndexMetadata& metadata = indexes[index];
+
+ if (metadata.id() == Id()) {
+ mMetadata = &metadata;
+
+ found = true;
+ break;
+ }
+ }
+
+ MOZ_ASSERT_IF(!aMayDelete && !mDeletedMetadata, found);
+
+ if (found) {
+ MOZ_ASSERT(mMetadata != mDeletedMetadata);
+ mDeletedMetadata = nullptr;
+ } else {
+ NoteDeletion();
+ }
+}
+
+void
+IDBIndex::NoteDeletion()
+{
+ AssertIsOnOwningThread();
+ MOZ_ASSERT(mMetadata);
+ MOZ_ASSERT(Id() == mMetadata->id());
+
+ if (mDeletedMetadata) {
+ MOZ_ASSERT(mMetadata == mDeletedMetadata);
+ return;
+ }
+
+ mDeletedMetadata = new IndexMetadata(*mMetadata);
+
+ mMetadata = mDeletedMetadata;
+}
+
+const nsString&
+IDBIndex::Name() const
+{
+ AssertIsOnOwningThread();
+ MOZ_ASSERT(mMetadata);
+
+ return mMetadata->name();
+}
+
+void
+IDBIndex::SetName(const nsAString& aName, ErrorResult& aRv)
+{
+ AssertIsOnOwningThread();
+
+ IDBTransaction* transaction = mObjectStore->Transaction();
+
+ if (transaction->GetMode() != IDBTransaction::VERSION_CHANGE ||
+ mDeletedMetadata) {
+ aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
+ return;
+ }
+
+ if (!transaction->IsOpen()) {
+ 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("IndexedDB %s: Child Transaction[%lld] Request[%llu]: "
+ "database(%s).transaction(%s).objectStore(%s).index(%s)."
+ "rename(%s)",
+ "IndexedDB %s: C T[%lld] R[%llu]: IDBIndex.rename()",
+ IDB_LOG_ID_STRING(),
+ transaction->LoggingSerialNumber(),
+ requestSerialNumber,
+ IDB_LOG_STRINGIFY(transaction->Database()),
+ IDB_LOG_STRINGIFY(transaction),
+ IDB_LOG_STRINGIFY(mObjectStore),
+ loggingOldIndex.get(),
+ IDB_LOG_STRINGIFY(this));
+
+ transaction->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 {
+ aLocale.AssignWithConversion(mMetadata->locale());
+ }
+}
+
+const nsCString&
+IDBIndex::Locale() const
+{
+ AssertIsOnOwningThread();
+ MOZ_ASSERT(mMetadata);
+
+ return mMetadata->locale();
+}
+
+bool
+IDBIndex::IsAutoLocale() const
+{
+ AssertIsOnOwningThread();
+ MOZ_ASSERT(mMetadata);
+
+ return mMetadata->autoLocale();
+}
+
+nsPIDOMWindowInner*
+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);
+}
+
+already_AddRefed<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;
+ }
+
+ IDBTransaction* transaction = mObjectStore->Transaction();
+ if (!transaction->IsOpen()) {
+ aRv.Throw(NS_ERROR_DOM_INDEXEDDB_TRANSACTION_INACTIVE_ERR);
+ return nullptr;
+ }
+
+ RefPtr<IDBKeyRange> keyRange;
+ aRv = IDBKeyRange::FromJSVal(aCx, aKey, getter_AddRefs(keyRange));
+ 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_DATA_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);
+ }
+
+ RefPtr<IDBRequest> request = GenerateRequest(aCx, this);
+ MOZ_ASSERT(request);
+
+ if (aKeyOnly) {
+ IDB_LOG_MARK("IndexedDB %s: Child Transaction[%lld] Request[%llu]: "
+ "database(%s).transaction(%s).objectStore(%s).index(%s)."
+ "getKey(%s)",
+ "IndexedDB %s: C T[%lld] R[%llu]: IDBIndex.getKey()",
+ IDB_LOG_ID_STRING(),
+ 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("IndexedDB %s: Child Transaction[%lld] Request[%llu]: "
+ "database(%s).transaction(%s).objectStore(%s).index(%s)."
+ "get(%s)",
+ "IndexedDB %s: C T[%lld] R[%llu]: IDBIndex.get()",
+ IDB_LOG_ID_STRING(),
+ 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));
+ }
+
+ transaction->StartRequest(request, params);
+
+ return request.forget();
+}
+
+already_AddRefed<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;
+ }
+
+ IDBTransaction* transaction = mObjectStore->Transaction();
+ if (!transaction->IsOpen()) {
+ aRv.Throw(NS_ERROR_DOM_INDEXEDDB_TRANSACTION_INACTIVE_ERR);
+ return nullptr;
+ }
+
+ RefPtr<IDBKeyRange> keyRange;
+ aRv = IDBKeyRange::FromJSVal(aCx, aKey, getter_AddRefs(keyRange));
+ if (NS_WARN_IF(aRv.Failed())) {
+ return nullptr;
+ }
+
+ const int64_t objectStoreId = mObjectStore->Id();
+ const int64_t indexId = Id();
+
+ OptionalKeyRange optionalKeyRange;
+ if (keyRange) {
+ SerializedKeyRange serializedKeyRange;
+ keyRange->ToSerialized(serializedKeyRange);
+ optionalKeyRange = serializedKeyRange;
+ } else {
+ optionalKeyRange = void_t();
+ }
+
+ const uint32_t limit = aLimit.WasPassed() ? aLimit.Value() : 0;
+
+ RequestParams params;
+ if (aKeysOnly) {
+ params = IndexGetAllKeysParams(objectStoreId, indexId, optionalKeyRange,
+ limit);
+ } else {
+ params = IndexGetAllParams(objectStoreId, indexId, optionalKeyRange, limit);
+ }
+
+ RefPtr<IDBRequest> request = GenerateRequest(aCx, this);
+ MOZ_ASSERT(request);
+
+ if (aKeysOnly) {
+ IDB_LOG_MARK("IndexedDB %s: Child Transaction[%lld] Request[%llu]: "
+ "database(%s).transaction(%s).objectStore(%s).index(%s)."
+ "getAllKeys(%s, %s)",
+ "IndexedDB %s: C T[%lld] R[%llu]: IDBIndex.getAllKeys()",
+ IDB_LOG_ID_STRING(),
+ 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("IndexedDB %s: Child Transaction[%lld] Request[%llu]: "
+ "database(%s).transaction(%s).objectStore(%s).index(%s)."
+ "getAll(%s, %s)",
+ "IndexedDB %s: C T[%lld] R[%llu]: IDBIndex.getAll()",
+ IDB_LOG_ID_STRING(),
+ 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));
+ }
+
+ transaction->StartRequest(request, params);
+
+ return request.forget();
+}
+
+already_AddRefed<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;
+ }
+
+ IDBTransaction* transaction = mObjectStore->Transaction();
+ if (!transaction->IsOpen()) {
+ aRv.Throw(NS_ERROR_DOM_INDEXEDDB_TRANSACTION_INACTIVE_ERR);
+ return nullptr;
+ }
+
+ RefPtr<IDBKeyRange> keyRange;
+ aRv = IDBKeyRange::FromJSVal(aCx, aRange, getter_AddRefs(keyRange));
+ if (NS_WARN_IF(aRv.Failed())) {
+ return nullptr;
+ }
+
+ int64_t objectStoreId = mObjectStore->Id();
+ int64_t indexId = Id();
+
+ OptionalKeyRange optionalKeyRange;
+
+ if (keyRange) {
+ SerializedKeyRange serializedKeyRange;
+ keyRange->ToSerialized(serializedKeyRange);
+
+ optionalKeyRange = Move(serializedKeyRange);
+ } else {
+ optionalKeyRange = void_t();
+ }
+
+ IDBCursor::Direction direction = IDBCursor::ConvertDirection(aDirection);
+
+ OpenCursorParams params;
+ if (aKeysOnly) {
+ IndexOpenKeyCursorParams openParams;
+ openParams.objectStoreId() = objectStoreId;
+ openParams.indexId() = indexId;
+ openParams.optionalKeyRange() = Move(optionalKeyRange);
+ openParams.direction() = direction;
+
+ params = Move(openParams);
+ } else {
+ IndexOpenCursorParams openParams;
+ openParams.objectStoreId() = objectStoreId;
+ openParams.indexId() = indexId;
+ openParams.optionalKeyRange() = Move(optionalKeyRange);
+ openParams.direction() = direction;
+
+ params = Move(openParams);
+ }
+
+ RefPtr<IDBRequest> request = GenerateRequest(aCx, this);
+ MOZ_ASSERT(request);
+
+ if (aKeysOnly) {
+ IDB_LOG_MARK("IndexedDB %s: Child Transaction[%lld] Request[%llu]: "
+ "database(%s).transaction(%s).objectStore(%s).index(%s)."
+ "openKeyCursor(%s, %s)",
+ "IndexedDB %s: C T[%lld] R[%llu]: IDBIndex.openKeyCursor()",
+ IDB_LOG_ID_STRING(),
+ 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(direction));
+ } else {
+ IDB_LOG_MARK("IndexedDB %s: Child Transaction[%lld] Request[%llu]: "
+ "database(%s).transaction(%s).objectStore(%s).index(%s)."
+ "openCursor(%s, %s)",
+ "IndexedDB %s: C T[%lld] R[%llu]: "
+ "IDBObjectStore.openKeyCursor()",
+ IDB_LOG_ID_STRING(),
+ 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(direction));
+ }
+
+ BackgroundCursorChild* actor =
+ new BackgroundCursorChild(request, this, direction);
+
+ mObjectStore->Transaction()->OpenCursor(actor, params);
+
+ return request.forget();
+}
+
+already_AddRefed<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;
+ }
+
+ IDBTransaction* transaction = mObjectStore->Transaction();
+ if (!transaction->IsOpen()) {
+ aRv.Throw(NS_ERROR_DOM_INDEXEDDB_TRANSACTION_INACTIVE_ERR);
+ return nullptr;
+ }
+
+ RefPtr<IDBKeyRange> keyRange;
+ aRv = IDBKeyRange::FromJSVal(aCx, aKey, getter_AddRefs(keyRange));
+ if (aRv.Failed()) {
+ return nullptr;
+ }
+
+ IndexCountParams params;
+ params.objectStoreId() = mObjectStore->Id();
+ params.indexId() = Id();
+
+ if (keyRange) {
+ SerializedKeyRange serializedKeyRange;
+ keyRange->ToSerialized(serializedKeyRange);
+ params.optionalKeyRange() = serializedKeyRange;
+ } else {
+ params.optionalKeyRange() = void_t();
+ }
+
+ RefPtr<IDBRequest> request = GenerateRequest(aCx, this);
+ MOZ_ASSERT(request);
+
+ IDB_LOG_MARK("IndexedDB %s: Child Transaction[%lld] Request[%llu]: "
+ "database(%s).transaction(%s).objectStore(%s).index(%s)."
+ "count(%s)",
+ "IndexedDB %s: C T[%lld] R[%llu]: IDBObjectStore.count()",
+ IDB_LOG_ID_STRING(),
+ 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));
+
+ transaction->StartRequest(request, params);
+
+ return request.forget();
+}
+
+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_SCRIPT_OBJECTS
+ 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 IDBIndexBinding::Wrap(aCx, this, aGivenProto);
+}
+
+} // namespace dom
+} // namespace mozilla