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gecko-dev/dom/indexedDB/IDBCursor.cpp

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=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 "base/basictypes.h"
#include "IDBCursor.h"
#include "mozilla/storage.h"
#include "nsComponentManagerUtils.h"
#include "nsJSUtils.h"
#include "nsThreadUtils.h"
#include "AsyncConnectionHelper.h"
#include "IDBEvents.h"
#include "IDBIndex.h"
#include "IDBObjectStore.h"
#include "IDBTransaction.h"
#include "ProfilerHelpers.h"
#include "ReportInternalError.h"
#include "TransactionThreadPool.h"
#include "ipc/IndexedDBChild.h"
#include "ipc/IndexedDBParent.h"
#include "IndexedDatabaseInlines.h"
#include "mozilla/dom/BindingDeclarations.h"
#include "mozilla/dom/UnionTypes.h"
USING_INDEXEDDB_NAMESPACE
using namespace mozilla::dom::indexedDB::ipc;
using mozilla::dom::Optional;
using mozilla::dom::OwningIDBObjectStoreOrIDBIndex;
using mozilla::ErrorResult;
static_assert(sizeof(size_t) >= sizeof(IDBCursor::Direction),
"Relying on conversion between size_t and IDBCursor::Direction");
namespace {
class CursorHelper : public AsyncConnectionHelper
{
public:
explicit CursorHelper(IDBCursor* aCursor)
: AsyncConnectionHelper(aCursor->Transaction(), aCursor->Request()),
mCursor(aCursor), mActor(nullptr)
{
NS_ASSERTION(aCursor, "Null cursor!");
}
virtual void ReleaseMainThreadObjects() MOZ_OVERRIDE;
virtual nsresult Dispatch(nsIEventTarget* aDatabaseThread) MOZ_OVERRIDE;
virtual nsresult
PackArgumentsForParentProcess(CursorRequestParams& aParams) = 0;
virtual nsresult
UnpackResponseFromParentProcess(const ResponseValue& aResponseValue) = 0;
protected:
virtual ~CursorHelper()
{ }
nsRefPtr<IDBCursor> mCursor;
private:
IndexedDBCursorRequestChild* mActor;
};
} // anonymous namespace
BEGIN_INDEXEDDB_NAMESPACE
class ContinueHelper : public CursorHelper
{
public:
ContinueHelper(IDBCursor* aCursor,
int32_t aCount)
: CursorHelper(aCursor), mCount(aCount)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aCursor);
MOZ_ASSERT(aCount > 0);
}
virtual nsresult DoDatabaseWork(mozIStorageConnection* aConnection)
MOZ_OVERRIDE;
virtual nsresult GetSuccessResult(JSContext* aCx,
JS::MutableHandle<JS::Value> aVal)
MOZ_OVERRIDE;
virtual void ReleaseMainThreadObjects() MOZ_OVERRIDE;
virtual nsresult
PackArgumentsForParentProcess(CursorRequestParams& aParams) MOZ_OVERRIDE;
virtual ChildProcessSendResult
SendResponseToChildProcess(nsresult aResultCode) MOZ_OVERRIDE;
virtual nsresult
UnpackResponseFromParentProcess(const ResponseValue& aResponseValue)
MOZ_OVERRIDE;
protected:
virtual ~ContinueHelper()
{
IDBObjectStore::ClearCloneReadInfo(mCloneReadInfo);
}
virtual nsresult
BindArgumentsToStatement(mozIStorageStatement* aStatement) = 0;
virtual nsresult
GatherResultsFromStatement(mozIStorageStatement* aStatement) = 0;
void UpdateCursorState()
{
mCursor->mCachedKey = JSVAL_VOID;
mCursor->mCachedPrimaryKey = JSVAL_VOID;
mCursor->mCachedValue = JSVAL_VOID;
mCursor->mHaveCachedKey = false;
mCursor->mHaveCachedPrimaryKey = false;
mCursor->mHaveCachedValue = false;
mCursor->mContinueCalled = false;
if (mKey.IsUnset()) {
mCursor->mHaveValue = false;
} else {
MOZ_ASSERT(mCursor->mType == IDBCursor::OBJECTSTORE ||
mCursor->mType == IDBCursor::OBJECTSTOREKEY ||
!mObjectKey.IsUnset());
// Set new values.
mCursor->mKey = mKey;
mCursor->mObjectKey = mObjectKey;
mCursor->mContinueToKey.Unset();
mCursor->mCloneReadInfo = Move(mCloneReadInfo);
mCloneReadInfo.mCloneBuffer.clear();
}
}
int32_t mCount;
Key mKey;
Key mObjectKey;
StructuredCloneReadInfo mCloneReadInfo;
};
class ContinueObjectStoreHelper : public ContinueHelper
{
public:
ContinueObjectStoreHelper(IDBCursor* aCursor,
uint32_t aCount)
: ContinueHelper(aCursor, aCount)
{ }
protected:
virtual ~ContinueObjectStoreHelper()
{ }
private:
nsresult BindArgumentsToStatement(mozIStorageStatement* aStatement);
nsresult GatherResultsFromStatement(mozIStorageStatement* aStatement);
};
class ContinueObjectStoreKeyHelper : public ContinueObjectStoreHelper
{
public:
ContinueObjectStoreKeyHelper(IDBCursor* aCursor,
uint32_t aCount)
: ContinueObjectStoreHelper(aCursor, aCount)
{ }
private:
virtual ~ContinueObjectStoreKeyHelper()
{ }
virtual nsresult
GatherResultsFromStatement(mozIStorageStatement* aStatement) MOZ_OVERRIDE;
};
class ContinueIndexHelper : public ContinueHelper
{
public:
ContinueIndexHelper(IDBCursor* aCursor,
uint32_t aCount)
: ContinueHelper(aCursor, aCount)
{ }
protected:
virtual ~ContinueIndexHelper()
{ }
private:
nsresult BindArgumentsToStatement(mozIStorageStatement* aStatement);
nsresult GatherResultsFromStatement(mozIStorageStatement* aStatement);
};
class ContinueIndexObjectHelper : public ContinueIndexHelper
{
public:
ContinueIndexObjectHelper(IDBCursor* aCursor,
uint32_t aCount)
: ContinueIndexHelper(aCursor, aCount)
{ }
private:
virtual ~ContinueIndexObjectHelper()
{ }
nsresult GatherResultsFromStatement(mozIStorageStatement* aStatement);
};
END_INDEXEDDB_NAMESPACE
// static
already_AddRefed<IDBCursor>
IDBCursor::Create(IDBRequest* aRequest,
IDBTransaction* aTransaction,
IDBObjectStore* aObjectStore,
Direction aDirection,
const Key& aRangeKey,
const nsACString& aContinueQuery,
const nsACString& aContinueToQuery,
const Key& aKey,
StructuredCloneReadInfo&& aCloneReadInfo)
{
NS_ASSERTION(aObjectStore, "Null pointer!");
NS_ASSERTION(!aKey.IsUnset(), "Bad key!");
nsRefPtr<IDBCursor> cursor =
IDBCursor::CreateCommon(aRequest, aTransaction, aObjectStore, aDirection,
aRangeKey, aContinueQuery, aContinueToQuery);
NS_ASSERTION(cursor, "This shouldn't fail!");
cursor->mObjectStore = aObjectStore;
cursor->mType = OBJECTSTORE;
cursor->mKey = aKey;
cursor->mCloneReadInfo = Move(aCloneReadInfo);
return cursor.forget();
}
// static
already_AddRefed<IDBCursor>
IDBCursor::Create(IDBRequest* aRequest,
IDBTransaction* aTransaction,
IDBObjectStore* aObjectStore,
Direction aDirection,
const Key& aRangeKey,
const nsACString& aContinueQuery,
const nsACString& aContinueToQuery,
const Key& aKey)
{
MOZ_ASSERT(aObjectStore);
MOZ_ASSERT(!aKey.IsUnset());
nsRefPtr<IDBCursor> cursor =
IDBCursor::CreateCommon(aRequest, aTransaction, aObjectStore, aDirection,
aRangeKey, aContinueQuery, aContinueToQuery);
NS_ASSERTION(cursor, "This shouldn't fail!");
cursor->mObjectStore = aObjectStore;
cursor->mType = OBJECTSTOREKEY;
cursor->mKey = aKey;
return cursor.forget();
}
// static
already_AddRefed<IDBCursor>
IDBCursor::Create(IDBRequest* aRequest,
IDBTransaction* aTransaction,
IDBIndex* aIndex,
Direction aDirection,
const Key& aRangeKey,
const nsACString& aContinueQuery,
const nsACString& aContinueToQuery,
const Key& aKey,
const Key& aObjectKey)
{
NS_ASSERTION(aIndex, "Null pointer!");
NS_ASSERTION(!aKey.IsUnset(), "Bad key!");
NS_ASSERTION(!aObjectKey.IsUnset(), "Bad key!");
nsRefPtr<IDBCursor> cursor =
IDBCursor::CreateCommon(aRequest, aTransaction, aIndex->ObjectStore(),
aDirection, aRangeKey, aContinueQuery,
aContinueToQuery);
NS_ASSERTION(cursor, "This shouldn't fail!");
cursor->mIndex = aIndex;
cursor->mType = INDEXKEY;
cursor->mKey = aKey,
cursor->mObjectKey = aObjectKey;
return cursor.forget();
}
// static
already_AddRefed<IDBCursor>
IDBCursor::Create(IDBRequest* aRequest,
IDBTransaction* aTransaction,
IDBIndex* aIndex,
Direction aDirection,
const Key& aRangeKey,
const nsACString& aContinueQuery,
const nsACString& aContinueToQuery,
const Key& aKey,
const Key& aObjectKey,
StructuredCloneReadInfo&& aCloneReadInfo)
{
NS_ASSERTION(aIndex, "Null pointer!");
NS_ASSERTION(!aKey.IsUnset(), "Bad key!");
nsRefPtr<IDBCursor> cursor =
IDBCursor::CreateCommon(aRequest, aTransaction, aIndex->ObjectStore(),
aDirection, aRangeKey, aContinueQuery,
aContinueToQuery);
NS_ASSERTION(cursor, "This shouldn't fail!");
cursor->mObjectStore = aIndex->ObjectStore();
cursor->mIndex = aIndex;
cursor->mType = INDEXOBJECT;
cursor->mKey = aKey;
cursor->mObjectKey = aObjectKey;
cursor->mCloneReadInfo = Move(aCloneReadInfo);
return cursor.forget();
}
// static
IDBCursor::Direction
IDBCursor::ConvertDirection(mozilla::dom::IDBCursorDirection aDirection)
{
switch (aDirection) {
case mozilla::dom::IDBCursorDirection::Next:
return NEXT;
case mozilla::dom::IDBCursorDirection::Nextunique:
return NEXT_UNIQUE;
case mozilla::dom::IDBCursorDirection::Prev:
return PREV;
case mozilla::dom::IDBCursorDirection::Prevunique:
return PREV_UNIQUE;
default:
MOZ_CRASH("Unknown direction!");
}
}
// static
already_AddRefed<IDBCursor>
IDBCursor::CreateCommon(IDBRequest* aRequest,
IDBTransaction* aTransaction,
IDBObjectStore* aObjectStore,
Direction aDirection,
const Key& aRangeKey,
const nsACString& aContinueQuery,
const nsACString& aContinueToQuery)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aRequest, "Null pointer!");
NS_ASSERTION(aTransaction, "Null pointer!");
NS_ASSERTION(aObjectStore, "Null pointer!");
NS_ASSERTION(!aContinueQuery.IsEmpty() ||
!IndexedDatabaseManager::IsMainProcess(),
"Empty query!");
NS_ASSERTION(!aContinueToQuery.IsEmpty() ||
!IndexedDatabaseManager::IsMainProcess(),
"Empty query!");
nsRefPtr<IDBCursor> cursor = new IDBCursor();
IDBDatabase* database = aTransaction->Database();
cursor->mScriptOwner = database->GetScriptOwner();
if (cursor->mScriptOwner) {
mozilla::HoldJSObjects(cursor.get());
cursor->mRooted = true;
}
cursor->mRequest = aRequest;
cursor->mTransaction = aTransaction;
cursor->mObjectStore = aObjectStore;
cursor->mDirection = aDirection;
cursor->mContinueQuery = aContinueQuery;
cursor->mContinueToQuery = aContinueToQuery;
cursor->mRangeKey = aRangeKey;
return cursor.forget();
}
IDBCursor::IDBCursor()
: mScriptOwner(nullptr),
mType(OBJECTSTORE),
mDirection(IDBCursor::NEXT),
mCachedKey(JSVAL_VOID),
mCachedPrimaryKey(JSVAL_VOID),
mCachedValue(JSVAL_VOID),
mActorChild(nullptr),
mActorParent(nullptr),
mHaveCachedKey(false),
mHaveCachedPrimaryKey(false),
mHaveCachedValue(false),
mRooted(false),
mContinueCalled(false),
mHaveValue(true)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
SetIsDOMBinding();
}
IDBCursor::~IDBCursor()
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(!mActorParent, "Actor parent owns us, how can we be dying?!");
if (mActorChild) {
NS_ASSERTION(!IndexedDatabaseManager::IsMainProcess(), "Wrong process!");
mActorChild->Send__delete__(mActorChild);
NS_ASSERTION(!mActorChild, "Should have cleared in Send__delete__!");
}
DropJSObjects();
IDBObjectStore::ClearCloneReadInfo(mCloneReadInfo);
}
void
IDBCursor::DropJSObjects()
{
if (!mRooted) {
return;
}
mScriptOwner = nullptr;
mCachedKey = JSVAL_VOID;
mCachedPrimaryKey = JSVAL_VOID;
mCachedValue = JSVAL_VOID;
mHaveCachedKey = false;
mHaveCachedPrimaryKey = false;
mHaveCachedValue = false;
mRooted = false;
mHaveValue = false;
mozilla::DropJSObjects(this);
}
void
IDBCursor::ContinueInternal(const Key& aKey, int32_t aCount, ErrorResult& aRv)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aCount > 0);
if (!mTransaction->IsOpen()) {
aRv.Throw(NS_ERROR_DOM_INDEXEDDB_TRANSACTION_INACTIVE_ERR);
return;
}
if (!mHaveValue || mContinueCalled) {
aRv.Throw(NS_ERROR_DOM_INDEXEDDB_NOT_ALLOWED_ERR);
return;
}
mContinueToKey = aKey;
MOZ_ASSERT(mRequest->ReadyState() == IDBRequestReadyState::Done);
mRequest->Reset();
nsRefPtr<ContinueHelper> helper;
switch (mType) {
case OBJECTSTORE:
helper = new ContinueObjectStoreHelper(this, aCount);
break;
case OBJECTSTOREKEY:
helper = new ContinueObjectStoreKeyHelper(this, aCount);
break;
case INDEXKEY:
helper = new ContinueIndexHelper(this, aCount);
break;
case INDEXOBJECT:
helper = new ContinueIndexObjectHelper(this, aCount);
break;
default:
MOZ_CRASH("Unknown cursor type!");
}
nsresult rv = helper->DispatchToTransactionPool();
if (NS_FAILED(rv)) {
IDB_WARNING("Failed to dispatch!");
aRv.Throw(NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
return;
}
mContinueCalled = true;
}
NS_IMPL_CYCLE_COLLECTION_CLASS(IDBCursor)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(IDBCursor)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mRequest)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mTransaction)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mObjectStore)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mIndex)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(IDBCursor)
NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
NS_ASSERTION(tmp->mHaveCachedKey || tmp->mCachedKey.isUndefined(),
"Should have a cached key");
NS_ASSERTION(tmp->mHaveCachedPrimaryKey ||
tmp->mCachedPrimaryKey.isUndefined(),
"Should have a cached primary key");
NS_ASSERTION(tmp->mHaveCachedValue || tmp->mCachedValue.isUndefined(),
"Should have a cached value");
NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mScriptOwner)
NS_IMPL_CYCLE_COLLECTION_TRACE_JSVAL_MEMBER_CALLBACK(mCachedKey)
NS_IMPL_CYCLE_COLLECTION_TRACE_JSVAL_MEMBER_CALLBACK(mCachedPrimaryKey)
NS_IMPL_CYCLE_COLLECTION_TRACE_JSVAL_MEMBER_CALLBACK(mCachedValue)
NS_IMPL_CYCLE_COLLECTION_TRACE_END
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(IDBCursor)
NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
// Don't unlink mObjectStore, mIndex, or mTransaction!
tmp->DropJSObjects();
NS_IMPL_CYCLE_COLLECTION_UNLINK(mRequest)
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(IDBCursor)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(IDBCursor)
NS_IMPL_CYCLE_COLLECTING_RELEASE(IDBCursor)
JSObject*
IDBCursor::WrapObject(JSContext* aCx)
{
MOZ_ASSERT(NS_IsMainThread());
switch (mType) {
case OBJECTSTORE:
case INDEXOBJECT:
return IDBCursorWithValueBinding::Wrap(aCx, this);
case OBJECTSTOREKEY:
case INDEXKEY:
return IDBCursorBinding::Wrap(aCx, this);
default:
MOZ_CRASH("Bad type!");
}
}
mozilla::dom::IDBCursorDirection
IDBCursor::GetDirection() const
{
MOZ_ASSERT(NS_IsMainThread());
switch (mDirection) {
case NEXT:
return mozilla::dom::IDBCursorDirection::Next;
case NEXT_UNIQUE:
return mozilla::dom::IDBCursorDirection::Nextunique;
case PREV:
return mozilla::dom::IDBCursorDirection::Prev;
case PREV_UNIQUE:
return mozilla::dom::IDBCursorDirection::Prevunique;
default:
MOZ_CRASH("Bad direction!");
}
}
void
IDBCursor::GetSource(OwningIDBObjectStoreOrIDBIndex& aSource) const
{
MOZ_ASSERT(NS_IsMainThread());
switch (mType) {
case OBJECTSTORE:
case OBJECTSTOREKEY:
MOZ_ASSERT(mObjectStore);
aSource.SetAsIDBObjectStore() = mObjectStore;
break;
case INDEXKEY:
case INDEXOBJECT:
MOZ_ASSERT(mIndex);
aSource.SetAsIDBIndex() = mIndex;
break;
default:
MOZ_ASSERT_UNREACHABLE("Bad type!");
}
}
void
IDBCursor::GetKey(JSContext* aCx, JS::MutableHandle<JS::Value> aResult,
ErrorResult& aRv)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(!mKey.IsUnset() || !mHaveValue);
if (!mHaveValue) {
aResult.setUndefined();
return;
}
if (!mHaveCachedKey) {
if (!mRooted) {
mozilla::HoldJSObjects(this);
mRooted = true;
}
aRv = mKey.ToJSVal(aCx, mCachedKey);
if (NS_WARN_IF(aRv.Failed())) {
return;
}
mHaveCachedKey = true;
}
JS::ExposeValueToActiveJS(mCachedKey);
aResult.set(mCachedKey);
}
void
IDBCursor::GetPrimaryKey(JSContext* aCx, JS::MutableHandle<JS::Value> aResult,
ErrorResult& aRv)
{
MOZ_ASSERT(NS_IsMainThread());
if (!mHaveValue) {
aResult.setUndefined();
return;
}
if (!mHaveCachedPrimaryKey) {
if (!mRooted) {
mozilla::HoldJSObjects(this);
mRooted = true;
}
const Key& key =
(mType == OBJECTSTORE || mType == OBJECTSTOREKEY) ? mKey : mObjectKey;
MOZ_ASSERT(!key.IsUnset());
aRv = key.ToJSVal(aCx, mCachedPrimaryKey);
if (NS_WARN_IF(aRv.Failed())) {
return;
}
mHaveCachedPrimaryKey = true;
}
JS::ExposeValueToActiveJS(mCachedPrimaryKey);
aResult.set(mCachedPrimaryKey);
}
void
IDBCursor::GetValue(JSContext* aCx, JS::MutableHandle<JS::Value> aResult,
ErrorResult& aRv)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mType == OBJECTSTORE || mType == INDEXOBJECT);
if (!mHaveValue) {
aResult.setUndefined();
return;
}
if (!mHaveCachedValue) {
if (!mRooted) {
mozilla::HoldJSObjects(this);
mRooted = true;
}
JS::Rooted<JS::Value> val(aCx);
if (!IDBObjectStore::DeserializeValue(aCx, mCloneReadInfo, &val)) {
aRv.Throw(NS_ERROR_DOM_DATA_CLONE_ERR);
return;
}
mCloneReadInfo.mCloneBuffer.clear();
mCachedValue = val;
mHaveCachedValue = true;
}
JS::ExposeValueToActiveJS(mCachedValue);
aResult.set(mCachedValue);
}
void
IDBCursor::Continue(JSContext* aCx,
JS::Handle<JS::Value> aKey,
ErrorResult &aRv)
{
MOZ_ASSERT(NS_IsMainThread());
Key key;
aRv = key.SetFromJSVal(aCx, aKey);
ENSURE_SUCCESS_VOID(aRv);
if (!key.IsUnset()) {
switch (mDirection) {
case IDBCursor::NEXT:
case IDBCursor::NEXT_UNIQUE:
if (key <= mKey) {
aRv.Throw(NS_ERROR_DOM_INDEXEDDB_DATA_ERR);
return;
}
break;
case IDBCursor::PREV:
case IDBCursor::PREV_UNIQUE:
if (key >= mKey) {
aRv.Throw(NS_ERROR_DOM_INDEXEDDB_DATA_ERR);
return;
}
break;
default:
MOZ_CRASH("Unknown direction type!");
}
}
ContinueInternal(key, 1, aRv);
if (aRv.Failed()) {
return;
}
#ifdef IDB_PROFILER_USE_MARKS
if (mType == OBJECTSTORE || mType == OBJECTSTOREKEY) {
IDB_PROFILER_MARK("IndexedDB Request %llu: "
"database(%s).transaction(%s).objectStore(%s).cursor(%s)."
"continue(%s)",
"IDBRequest[%llu] MT IDBCursor.continue()",
Request()->GetSerialNumber(),
IDB_PROFILER_STRING(Transaction()->Database()),
IDB_PROFILER_STRING(Transaction()),
IDB_PROFILER_STRING(mObjectStore),
IDB_PROFILER_STRING(mDirection),
key.IsUnset() ? "" : IDB_PROFILER_STRING(key));
}
else {
IDB_PROFILER_MARK("IndexedDB Request %llu: "
"database(%s).transaction(%s).objectStore(%s).index(%s)."
"cursor(%s).continue(%s)",
"IDBRequest[%llu] MT IDBCursor.continue()",
Request()->GetSerialNumber(),
IDB_PROFILER_STRING(Transaction()->Database()),
IDB_PROFILER_STRING(Transaction()),
IDB_PROFILER_STRING(mObjectStore),
IDB_PROFILER_STRING(mIndex),
IDB_PROFILER_STRING(mDirection),
key.IsUnset() ? "" : IDB_PROFILER_STRING(key));
}
#endif
}
already_AddRefed<IDBRequest>
IDBCursor::Update(JSContext* aCx, JS::Handle<JS::Value> aValue,
ErrorResult& aRv)
{
MOZ_ASSERT(NS_IsMainThread());
if (!mTransaction->IsOpen()) {
aRv.Throw(NS_ERROR_DOM_INDEXEDDB_TRANSACTION_INACTIVE_ERR);
return nullptr;
}
if (!mTransaction->IsWriteAllowed()) {
aRv.Throw(NS_ERROR_DOM_INDEXEDDB_READ_ONLY_ERR);
return nullptr;
}
if (!mHaveValue || mType == OBJECTSTOREKEY || mType == INDEXKEY) {
aRv.Throw(NS_ERROR_DOM_INDEXEDDB_NOT_ALLOWED_ERR);
return nullptr;
}
MOZ_ASSERT(mObjectStore);
MOZ_ASSERT(!mKey.IsUnset());
MOZ_ASSERT(mType == OBJECTSTORE || mType == INDEXOBJECT);
MOZ_ASSERT_IF(mType == INDEXOBJECT, !mObjectKey.IsUnset());
const Key& objectKey = (mType == OBJECTSTORE) ? mKey : mObjectKey;
nsRefPtr<IDBRequest> request;
if (mObjectStore->HasValidKeyPath()) {
// Make sure the object given has the correct keyPath value set on it.
const KeyPath& keyPath = mObjectStore->GetKeyPath();
Key key;
aRv = keyPath.ExtractKey(aCx, aValue, key);
if (aRv.Failed()) {
return nullptr;
}
if (key != objectKey) {
aRv.Throw(NS_ERROR_DOM_INDEXEDDB_DATA_ERR);
return nullptr;
}
request = mObjectStore->Put(aCx, aValue, JS::UndefinedHandleValue, aRv);
if (aRv.Failed()) {
return nullptr;
}
}
else {
JS::Rooted<JS::Value> keyVal(aCx);
aRv = objectKey.ToJSVal(aCx, &keyVal);
ENSURE_SUCCESS(aRv, nullptr);
request = mObjectStore->Put(aCx, aValue, keyVal, aRv);
if (aRv.Failed()) {
return nullptr;
}
}
#ifdef IDB_PROFILER_USE_MARKS
{
uint64_t requestSerial =
static_cast<IDBRequest*>(request.get())->GetSerialNumber();
if (mType == OBJECTSTORE) {
IDB_PROFILER_MARK("IndexedDB Request %llu: "
"database(%s).transaction(%s).objectStore(%s)."
"cursor(%s).update(%s)",
"IDBRequest[%llu] MT IDBCursor.update()",
requestSerial,
IDB_PROFILER_STRING(mTransaction->Database()),
IDB_PROFILER_STRING(mTransaction),
IDB_PROFILER_STRING(mObjectStore),
IDB_PROFILER_STRING(mDirection),
mObjectStore->HasValidKeyPath() ? "" :
IDB_PROFILER_STRING(objectKey));
}
else {
IDB_PROFILER_MARK("IndexedDB Request %llu: "
"database(%s).transaction(%s).objectStore(%s)."
"index(%s).cursor(%s).update(%s)",
"IDBRequest[%llu] MT IDBCursor.update()",
requestSerial,
IDB_PROFILER_STRING(mTransaction->Database()),
IDB_PROFILER_STRING(mTransaction),
IDB_PROFILER_STRING(mObjectStore),
IDB_PROFILER_STRING(mIndex),
IDB_PROFILER_STRING(mDirection),
mObjectStore->HasValidKeyPath() ? "" :
IDB_PROFILER_STRING(objectKey));
}
}
#endif
return request.forget();
}
already_AddRefed<IDBRequest>
IDBCursor::Delete(JSContext* aCx, ErrorResult& aRv)
{
MOZ_ASSERT(NS_IsMainThread());
if (!mTransaction->IsOpen()) {
aRv.Throw(NS_ERROR_DOM_INDEXEDDB_TRANSACTION_INACTIVE_ERR);
return nullptr;
}
if (!mTransaction->IsWriteAllowed()) {
aRv.Throw(NS_ERROR_DOM_INDEXEDDB_READ_ONLY_ERR);
return nullptr;
}
if (!mHaveValue || mType == OBJECTSTOREKEY || mType == INDEXKEY) {
aRv.Throw(NS_ERROR_DOM_INDEXEDDB_NOT_ALLOWED_ERR);
return nullptr;
}
MOZ_ASSERT(mObjectStore);
MOZ_ASSERT(mType == OBJECTSTORE || mType == INDEXOBJECT);
MOZ_ASSERT(!mKey.IsUnset());
const Key& objectKey = (mType == OBJECTSTORE) ? mKey : mObjectKey;
JS::Rooted<JS::Value> key(aCx);
aRv = objectKey.ToJSVal(aCx, &key);
ENSURE_SUCCESS(aRv, nullptr);
nsRefPtr<IDBRequest> request = mObjectStore->Delete(aCx, key, aRv);
ENSURE_SUCCESS(aRv, nullptr);
#ifdef IDB_PROFILER_USE_MARKS
{
uint64_t requestSerial = request->GetSerialNumber();
if (mType == OBJECTSTORE) {
IDB_PROFILER_MARK("IndexedDB Request %llu: "
"database(%s).transaction(%s).objectStore(%s)."
"cursor(%s).delete(%s)",
"IDBRequest[%llu] MT IDBCursor.delete()",
requestSerial,
IDB_PROFILER_STRING(mTransaction->Database()),
IDB_PROFILER_STRING(mTransaction),
IDB_PROFILER_STRING(mObjectStore),
IDB_PROFILER_STRING(mDirection),
mObjectStore->HasValidKeyPath() ? "" :
IDB_PROFILER_STRING(objectKey));
}
else {
IDB_PROFILER_MARK("IndexedDB Request %llu: "
"database(%s).transaction(%s).objectStore(%s)."
"index(%s).cursor(%s).delete(%s)",
"IDBRequest[%llu] MT IDBCursor.delete()",
requestSerial,
IDB_PROFILER_STRING(mTransaction->Database()),
IDB_PROFILER_STRING(mTransaction),
IDB_PROFILER_STRING(mObjectStore),
IDB_PROFILER_STRING(mIndex),
IDB_PROFILER_STRING(mDirection),
mObjectStore->HasValidKeyPath() ? "" :
IDB_PROFILER_STRING(objectKey));
}
}
#endif
return request.forget();
}
void
IDBCursor::Advance(uint32_t aCount, ErrorResult &aRv)
{
MOZ_ASSERT(NS_IsMainThread());
if (aCount < 1) {
aRv.ThrowTypeError(MSG_INVALID_ADVANCE_COUNT);
return;
}
Key key;
ContinueInternal(key, int32_t(aCount), aRv);
ENSURE_SUCCESS_VOID(aRv);
#ifdef IDB_PROFILER_USE_MARKS
{
if (mType == OBJECTSTORE || mType == OBJECTSTOREKEY) {
IDB_PROFILER_MARK("IndexedDB Request %llu: "
"database(%s).transaction(%s).objectStore(%s)."
"cursor(%s).advance(%ld)",
"IDBRequest[%llu] MT IDBCursor.advance()",
Request()->GetSerialNumber(),
IDB_PROFILER_STRING(Transaction()->Database()),
IDB_PROFILER_STRING(Transaction()),
IDB_PROFILER_STRING(mObjectStore),
IDB_PROFILER_STRING(mDirection), aCount);
}
else {
IDB_PROFILER_MARK("IndexedDB Request %llu: "
"database(%s).transaction(%s).objectStore(%s)."
"index(%s).cursor(%s).advance(%ld)",
"IDBRequest[%llu] MT IDBCursor.advance()",
Request()->GetSerialNumber(),
IDB_PROFILER_STRING(Transaction()->Database()),
IDB_PROFILER_STRING(Transaction()),
IDB_PROFILER_STRING(mObjectStore),
IDB_PROFILER_STRING(mIndex),
IDB_PROFILER_STRING(mDirection), aCount);
}
}
#endif
}
void
CursorHelper::ReleaseMainThreadObjects()
{
mCursor = nullptr;
AsyncConnectionHelper::ReleaseMainThreadObjects();
}
nsresult
CursorHelper::Dispatch(nsIEventTarget* aDatabaseThread)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
PROFILER_MAIN_THREAD_LABEL("CursorHelper", "Dispatch",
js::ProfileEntry::Category::STORAGE);
if (IndexedDatabaseManager::IsMainProcess()) {
return AsyncConnectionHelper::Dispatch(aDatabaseThread);
}
// If we've been invalidated then there's no point sending anything to the
// parent process.
if (mCursor->Transaction()->Database()->IsInvalidated()) {
IDB_REPORT_INTERNAL_ERR();
return NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
}
IndexedDBCursorChild* cursorActor = mCursor->GetActorChild();
NS_ASSERTION(cursorActor, "Must have an actor here!");
CursorRequestParams params;
nsresult rv = PackArgumentsForParentProcess(params);
IDB_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
NoDispatchEventTarget target;
rv = AsyncConnectionHelper::Dispatch(&target);
IDB_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
mActor = new IndexedDBCursorRequestChild(this, mCursor, params.type());
cursorActor->SendPIndexedDBRequestConstructor(mActor, params);
return NS_OK;
}
nsresult
ContinueHelper::DoDatabaseWork(mozIStorageConnection* aConnection)
{
NS_ASSERTION(!NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(IndexedDatabaseManager::IsMainProcess(), "Wrong process!");
PROFILER_LABEL("ContinueHelper", "DoDatabaseWork",
js::ProfileEntry::Category::STORAGE);
// We need to pick a query based on whether or not the cursor's mContinueToKey
// is set. If it is unset then othing was passed to continue so we'll grab the
// next item in the database that is greater than (less than, if we're running
// a PREV cursor) the current key. If it is set then a key was passed to
// continue so we'll grab the next item in the database that is greater than
// (less than, if we're running a PREV cursor) or equal to the key that was
// specified.
nsAutoCString query;
if (mCursor->mContinueToKey.IsUnset()) {
query.Assign(mCursor->mContinueQuery);
}
else {
query.Assign(mCursor->mContinueToQuery);
}
NS_ASSERTION(!query.IsEmpty(), "Bad query!");
query.AppendInt(mCount);
nsCOMPtr<mozIStorageStatement> stmt = mTransaction->GetCachedStatement(query);
IDB_ENSURE_TRUE(stmt, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
mozStorageStatementScoper scoper(stmt);
nsresult rv = BindArgumentsToStatement(stmt);
IDB_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
NS_ASSERTION(mCount > 0, "Not ok!");
bool hasResult;
for (int32_t index = 0; index < mCount; index++) {
rv = stmt->ExecuteStep(&hasResult);
IDB_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
if (!hasResult) {
break;
}
}
if (hasResult) {
rv = GatherResultsFromStatement(stmt);
IDB_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
}
else {
mKey.Unset();
}
return NS_OK;
}
nsresult
ContinueHelper::GetSuccessResult(JSContext* aCx,
JS::MutableHandle<JS::Value> aVal)
{
UpdateCursorState();
if (mKey.IsUnset()) {
aVal.setNull();
}
else {
nsresult rv = WrapNative(aCx, mCursor, aVal);
NS_ENSURE_SUCCESS(rv, rv);
}
return NS_OK;
}
void
ContinueHelper::ReleaseMainThreadObjects()
{
IDBObjectStore::ClearCloneReadInfo(mCloneReadInfo);
CursorHelper::ReleaseMainThreadObjects();
}
nsresult
ContinueHelper::PackArgumentsForParentProcess(CursorRequestParams& aParams)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(!IndexedDatabaseManager::IsMainProcess(), "Wrong process!");
PROFILER_MAIN_THREAD_LABEL("ContinueHelper", "PackArgumentsForParentProcess",
js::ProfileEntry::Category::STORAGE);
ContinueParams params;
params.key() = mCursor->mContinueToKey;
params.count() = uint32_t(mCount);
aParams = params;
return NS_OK;
}
AsyncConnectionHelper::ChildProcessSendResult
ContinueHelper::SendResponseToChildProcess(nsresult aResultCode)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(IndexedDatabaseManager::IsMainProcess(), "Wrong process!");
PROFILER_MAIN_THREAD_LABEL("ContinueHelper", "SendResponseToChildProcess",
js::ProfileEntry::Category::STORAGE);
IndexedDBRequestParentBase* actor = mRequest->GetActorParent();
NS_ASSERTION(actor, "How did we get this far without an actor?");
InfallibleTArray<PBlobParent*> blobsParent;
if (NS_SUCCEEDED(aResultCode)) {
IDBDatabase* database = mTransaction->Database();
NS_ASSERTION(database, "This should never be null!");
nsIContentParent* contentParent = database->GetContentParent();
NS_ASSERTION(contentParent, "This should never be null!");
FileManager* fileManager = database->Manager();
NS_ASSERTION(fileManager, "This should never be null!");
const nsTArray<StructuredCloneFile>& files = mCloneReadInfo.mFiles;
aResultCode =
IDBObjectStore::ConvertBlobsToActors(contentParent, fileManager, files,
blobsParent);
if (NS_FAILED(aResultCode)) {
NS_WARNING("ConvertBlobsToActors failed!");
}
}
ResponseValue response;
if (NS_FAILED(aResultCode)) {
response = aResultCode;
}
else {
ContinueResponse continueResponse;
continueResponse.key() = mKey;
continueResponse.objectKey() = mObjectKey;
continueResponse.cloneInfo() = mCloneReadInfo;
continueResponse.blobsParent().SwapElements(blobsParent);
response = continueResponse;
}
if (!actor->SendResponse(response)) {
return Error;
}
UpdateCursorState();
return Success_Sent;
}
nsresult
ContinueHelper::UnpackResponseFromParentProcess(
const ResponseValue& aResponseValue)
{
NS_ASSERTION(aResponseValue.type() == ResponseValue::TContinueResponse,
"Bad response type!");
const ContinueResponse& response = aResponseValue.get_ContinueResponse();
mKey = response.key();
mObjectKey = response.objectKey();
const SerializedStructuredCloneReadInfo& cloneInfo = response.cloneInfo();
NS_ASSERTION((!cloneInfo.dataLength && !cloneInfo.data) ||
(cloneInfo.dataLength && cloneInfo.data),
"Inconsistent clone info!");
if (!mCloneReadInfo.SetFromSerialized(cloneInfo)) {
IDB_WARNING("Failed to copy clone buffer!");
return NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
}
IDBObjectStore::ConvertActorsToBlobs(response.blobsChild(),
mCloneReadInfo.mFiles);
return NS_OK;
}
nsresult
ContinueObjectStoreHelper::BindArgumentsToStatement(
mozIStorageStatement* aStatement)
{
MOZ_ASSERT(!NS_IsMainThread());
MOZ_ASSERT(aStatement);
// Bind object store id.
nsresult rv = aStatement->BindInt64ByName(NS_LITERAL_CSTRING("id"),
mCursor->mObjectStore->Id());
IDB_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
NS_NAMED_LITERAL_CSTRING(currentKeyName, "current_key");
NS_NAMED_LITERAL_CSTRING(rangeKeyName, "range_key");
// Bind current key.
const Key& currentKey = mCursor->mContinueToKey.IsUnset() ?
mCursor->mKey :
mCursor->mContinueToKey;
rv = currentKey.BindToStatement(aStatement, currentKeyName);
NS_ENSURE_SUCCESS(rv, rv);
// Bind range key if it is specified.
const Key& rangeKey = mCursor->mRangeKey;
if (!rangeKey.IsUnset()) {
rv = rangeKey.BindToStatement(aStatement, rangeKeyName);
NS_ENSURE_SUCCESS(rv, rv);
}
return NS_OK;
}
nsresult
ContinueObjectStoreHelper::GatherResultsFromStatement(
mozIStorageStatement* aStatement)
{
MOZ_ASSERT(!NS_IsMainThread());
MOZ_ASSERT(aStatement);
// Figure out what kind of key we have next.
nsresult rv = mKey.SetFromStatement(aStatement, 0);
NS_ENSURE_SUCCESS(rv, rv);
rv = IDBObjectStore::GetStructuredCloneReadInfoFromStatement(aStatement, 1, 2,
mDatabase,
mCloneReadInfo);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
nsresult
ContinueObjectStoreKeyHelper::GatherResultsFromStatement(
mozIStorageStatement* aStatement)
{
MOZ_ASSERT(!NS_IsMainThread());
MOZ_ASSERT(aStatement);
nsresult rv = mKey.SetFromStatement(aStatement, 0);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
nsresult
ContinueIndexHelper::BindArgumentsToStatement(mozIStorageStatement* aStatement)
{
// Bind index id.
nsresult rv = aStatement->BindInt64ByName(NS_LITERAL_CSTRING("id"),
mCursor->mIndex->Id());
IDB_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
NS_NAMED_LITERAL_CSTRING(currentKeyName, "current_key");
// Bind current key.
const Key& currentKey = mCursor->mContinueToKey.IsUnset() ?
mCursor->mKey :
mCursor->mContinueToKey;
rv = currentKey.BindToStatement(aStatement, currentKeyName);
NS_ENSURE_SUCCESS(rv, rv);
// Bind range key if it is specified.
if (!mCursor->mRangeKey.IsUnset()) {
NS_NAMED_LITERAL_CSTRING(rangeKeyName, "range_key");
rv = mCursor->mRangeKey.BindToStatement(aStatement, rangeKeyName);
NS_ENSURE_SUCCESS(rv, rv);
}
// Bind object key if duplicates are allowed and we're not continuing to a
// specific key.
if ((mCursor->mDirection == IDBCursor::NEXT ||
mCursor->mDirection == IDBCursor::PREV) &&
mCursor->mContinueToKey.IsUnset()) {
NS_ASSERTION(!mCursor->mObjectKey.IsUnset(), "Bad key!");
NS_NAMED_LITERAL_CSTRING(objectKeyName, "object_key");
rv = mCursor->mObjectKey.BindToStatement(aStatement, objectKeyName);
NS_ENSURE_SUCCESS(rv, rv);
}
return NS_OK;
}
nsresult
ContinueIndexHelper::GatherResultsFromStatement(
mozIStorageStatement* aStatement)
{
nsresult rv = mKey.SetFromStatement(aStatement, 0);
NS_ENSURE_SUCCESS(rv, rv);
rv = mObjectKey.SetFromStatement(aStatement, 1);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
nsresult
ContinueIndexObjectHelper::GatherResultsFromStatement(
mozIStorageStatement* aStatement)
{
nsresult rv = mKey.SetFromStatement(aStatement, 0);
NS_ENSURE_SUCCESS(rv, rv);
rv = mObjectKey.SetFromStatement(aStatement, 1);
NS_ENSURE_SUCCESS(rv, rv);
rv = IDBObjectStore::GetStructuredCloneReadInfoFromStatement(aStatement, 2, 3,
mDatabase, mCloneReadInfo);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
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