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	This patch is originally authored by Bevis Tseng. Differential Revision: https://phabricator.services.mozilla.com/D204361
		
			
				
	
	
		
			298 lines
		
	
	
	
		
			9.8 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			298 lines
		
	
	
	
		
			9.8 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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 * License, v. 2.0. If a copy of the MPL was not distributed with this
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 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_idbobjectstore_h__
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#define mozilla_dom_idbobjectstore_h__
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#include "IDBCursor.h"
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#include "js/RootingAPI.h"
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#include "mozilla/dom/IDBCursorBinding.h"
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#include "mozilla/dom/IDBIndexBinding.h"
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#include "mozilla/UniquePtr.h"
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#include "nsCycleCollectionParticipant.h"
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#include "nsISupports.h"
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#include "nsString.h"
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#include "nsTArray.h"
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#include "nsWrapperCache.h"
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struct JSClass;
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class nsIGlobalObject;
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namespace mozilla {
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class ErrorResult;
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namespace dom {
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class DOMStringList;
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class IDBRequest;
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class IDBTransaction;
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class StringOrStringSequence;
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template <typename>
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class Sequence;
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namespace indexedDB {
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class Key;
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class KeyPath;
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class IndexUpdateInfo;
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class ObjectStoreSpec;
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struct StructuredCloneReadInfoChild;
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}  // namespace indexedDB
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class IDBObjectStore final : public nsISupports, public nsWrapperCache {
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  using IndexUpdateInfo = indexedDB::IndexUpdateInfo;
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  using Key = indexedDB::Key;
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  using KeyPath = indexedDB::KeyPath;
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  using ObjectStoreSpec = indexedDB::ObjectStoreSpec;
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  using StructuredCloneReadInfoChild = indexedDB::StructuredCloneReadInfoChild;
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  using VoidOrObjectStoreKeyPathString = nsAString;
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  // For AddOrPut() and DeleteInternal().
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  // TODO Consider removing this, and making the functions public?
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  template <IDBCursor::Type>
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  friend class IDBTypedCursor;
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  static const JSClass sDummyPropJSClass;
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  // TODO: This could be made const if Bug 1575173 is resolved. It is
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  // initialized in the constructor and never modified/cleared.
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  SafeRefPtr<IDBTransaction> mTransaction;
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  JS::Heap<JS::Value> mCachedKeyPath;
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  // This normally points to the ObjectStoreSpec owned by the parent IDBDatabase
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  // object. However, if this objectStore is part of a versionchange transaction
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  // and it gets deleted then the spec is copied into mDeletedSpec and mSpec is
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  // set to point at mDeletedSpec.
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  ObjectStoreSpec* mSpec;
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  UniquePtr<ObjectStoreSpec> mDeletedSpec;
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  nsTArray<RefPtr<IDBIndex>> mIndexes;
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  nsTArray<RefPtr<IDBIndex>> mDeletedIndexes;
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  const int64_t mId;
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  bool mRooted;
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 public:
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  struct StructuredCloneWriteInfo;
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  struct StructuredCloneInfo;
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  class MOZ_STACK_CLASS ValueWrapper final {
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    JS::Rooted<JS::Value> mValue;
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    bool mCloned;
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   public:
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    ValueWrapper(JSContext* aCx, JS::Handle<JS::Value> aValue)
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        : mValue(aCx, aValue), mCloned(false) {
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      MOZ_COUNT_CTOR(IDBObjectStore::ValueWrapper);
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    }
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    MOZ_COUNTED_DTOR_NESTED(ValueWrapper, IDBObjectStore::ValueWrapper)
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    const JS::Rooted<JS::Value>& Value() const { return mValue; }
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    bool Clone(JSContext* aCx);
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  };
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  [[nodiscard]] static RefPtr<IDBObjectStore> Create(
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      SafeRefPtr<IDBTransaction> aTransaction, ObjectStoreSpec& aSpec);
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  static void AppendIndexUpdateInfo(
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      int64_t aIndexID, const KeyPath& aKeyPath, bool aMultiEntry,
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      const nsCString& aLocale, JSContext* aCx, JS::Handle<JS::Value> aVal,
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      nsTArray<IndexUpdateInfo>* aUpdateInfoArray,
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      const VoidOrObjectStoreKeyPathString& aAutoIncrementedObjectStoreKeyPath,
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      ErrorResult* aRv);
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  static void ClearCloneReadInfo(
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      indexedDB::StructuredCloneReadInfoChild& aReadInfo);
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  static bool DeserializeValue(JSContext* aCx,
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                               StructuredCloneReadInfoChild&& aCloneReadInfo,
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                               JS::MutableHandle<JS::Value> aValue);
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  static const JSClass* DummyPropClass() { return &sDummyPropJSClass; }
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  void AssertIsOnOwningThread() const
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#ifdef DEBUG
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      ;
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#else
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  {
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  }
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#endif
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  int64_t Id() const {
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    AssertIsOnOwningThread();
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    return mId;
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  }
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  const nsString& Name() const;
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  bool AutoIncrement() const;
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  const KeyPath& GetKeyPath() const;
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  bool HasValidKeyPath() const;
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  nsIGlobalObject* GetParentObject() const;
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  void GetName(nsString& aName) const {
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    AssertIsOnOwningThread();
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    aName = Name();
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  }
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  void SetName(const nsAString& aName, ErrorResult& aRv);
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  void GetKeyPath(JSContext* aCx, JS::MutableHandle<JS::Value> aResult,
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                  ErrorResult& aRv);
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  [[nodiscard]] RefPtr<DOMStringList> IndexNames();
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  const IDBTransaction& TransactionRef() const {
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    AssertIsOnOwningThread();
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    return *mTransaction;
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  }
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  IDBTransaction& MutableTransactionRef() {
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    AssertIsOnOwningThread();
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    return *mTransaction;
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  }
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  SafeRefPtr<IDBTransaction> AcquireTransaction() const {
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    AssertIsOnOwningThread();
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    return mTransaction.clonePtr();
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  }
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  RefPtr<IDBTransaction> Transaction() const {
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    AssertIsOnOwningThread();
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    return AsRefPtr(mTransaction.clonePtr());
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  }
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  [[nodiscard]] RefPtr<IDBRequest> Add(JSContext* aCx,
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                                       JS::Handle<JS::Value> aValue,
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                                       JS::Handle<JS::Value> aKey,
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                                       ErrorResult& aRv);
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  [[nodiscard]] RefPtr<IDBRequest> Put(JSContext* aCx,
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                                       JS::Handle<JS::Value> aValue,
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                                       JS::Handle<JS::Value> aKey,
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                                       ErrorResult& aRv);
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  [[nodiscard]] RefPtr<IDBRequest> Delete(JSContext* aCx,
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                                          JS::Handle<JS::Value> aKey,
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                                          ErrorResult& aRv);
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  [[nodiscard]] RefPtr<IDBRequest> Get(JSContext* aCx,
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                                       JS::Handle<JS::Value> aKey,
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                                       ErrorResult& aRv);
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  [[nodiscard]] RefPtr<IDBRequest> GetKey(JSContext* aCx,
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                                          JS::Handle<JS::Value> aKey,
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                                          ErrorResult& aRv);
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  [[nodiscard]] RefPtr<IDBRequest> Clear(JSContext* aCx, ErrorResult& aRv);
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  [[nodiscard]] RefPtr<IDBIndex> CreateIndex(
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      const nsAString& aName, const StringOrStringSequence& aKeyPath,
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      const IDBIndexParameters& aOptionalParameters, ErrorResult& aRv);
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  [[nodiscard]] RefPtr<IDBIndex> Index(const nsAString& aName,
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                                       ErrorResult& aRv);
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  void DeleteIndex(const nsAString& aName, ErrorResult& aRv);
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  [[nodiscard]] RefPtr<IDBRequest> Count(JSContext* aCx,
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                                         JS::Handle<JS::Value> aKey,
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                                         ErrorResult& aRv);
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  [[nodiscard]] RefPtr<IDBRequest> GetAll(JSContext* aCx,
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                                          JS::Handle<JS::Value> aKey,
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                                          const Optional<uint32_t>& aLimit,
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                                          ErrorResult& aRv);
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  [[nodiscard]] RefPtr<IDBRequest> GetAllKeys(JSContext* aCx,
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                                              JS::Handle<JS::Value> aKey,
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                                              const Optional<uint32_t>& aLimit,
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                                              ErrorResult& aRv);
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  [[nodiscard]] RefPtr<IDBRequest> OpenCursor(JSContext* aCx,
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                                              JS::Handle<JS::Value> aRange,
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                                              IDBCursorDirection aDirection,
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                                              ErrorResult& aRv);
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  [[nodiscard]] RefPtr<IDBRequest> OpenCursor(JSContext* aCx,
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                                              IDBCursorDirection aDirection,
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                                              ErrorResult& aRv);
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  [[nodiscard]] RefPtr<IDBRequest> OpenKeyCursor(JSContext* aCx,
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                                                 JS::Handle<JS::Value> aRange,
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                                                 IDBCursorDirection aDirection,
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                                                 ErrorResult& aRv);
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  void RefreshSpec(bool aMayDelete);
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  const ObjectStoreSpec& Spec() const;
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  void NoteDeletion();
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  bool IsDeleted() const {
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    AssertIsOnOwningThread();
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    return !!mDeletedSpec;
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  }
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  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(IDBObjectStore)
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  // nsWrapperCache
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  virtual JSObject* WrapObject(JSContext* aCx,
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                               JS::Handle<JSObject*> aGivenProto) override;
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 private:
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  IDBObjectStore(SafeRefPtr<IDBTransaction> aTransaction,
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                 ObjectStoreSpec* aSpec);
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  ~IDBObjectStore();
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  void GetAddInfo(JSContext* aCx, ValueWrapper& aValueWrapper,
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                  JS::Handle<JS::Value> aKeyVal,
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                  StructuredCloneWriteInfo& aCloneWriteInfo, Key& aKey,
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                  nsTArray<IndexUpdateInfo>& aUpdateInfoArray,
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                  ErrorResult& aRv);
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  [[nodiscard]] RefPtr<IDBRequest> AddOrPut(JSContext* aCx,
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                                            ValueWrapper& aValueWrapper,
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                                            JS::Handle<JS::Value> aKey,
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                                            bool aOverwrite, bool aFromCursor,
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                                            ErrorResult& aRv);
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  [[nodiscard]] RefPtr<IDBRequest> DeleteInternal(JSContext* aCx,
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                                                  JS::Handle<JS::Value> aKey,
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                                                  bool aFromCursor,
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                                                  ErrorResult& aRv);
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  [[nodiscard]] RefPtr<IDBRequest> GetInternal(bool aKeyOnly, JSContext* aCx,
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                                               JS::Handle<JS::Value> aKey,
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                                               ErrorResult& aRv);
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  [[nodiscard]] RefPtr<IDBRequest> GetAllInternal(
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      bool aKeysOnly, JSContext* aCx, JS::Handle<JS::Value> aKey,
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      const Optional<uint32_t>& aLimit, ErrorResult& aRv);
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  [[nodiscard]] RefPtr<IDBRequest> OpenCursorInternal(
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      bool aKeysOnly, JSContext* aCx, JS::Handle<JS::Value> aRange,
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      IDBCursorDirection aDirection, ErrorResult& aRv);
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};
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}  // namespace dom
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}  // namespace mozilla
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#endif  // mozilla_dom_idbobjectstore_h__
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