зеркало из https://github.com/mozilla/pjs.git
196 строки
5.4 KiB
C++
196 строки
5.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Indexed Database.
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*
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* The Initial Developer of the Original Code is
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* The Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Ben Turner <bent.mozilla@gmail.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef mozilla_dom_indexeddb_idbcursor_h__
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#define mozilla_dom_indexeddb_idbcursor_h__
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#include "mozilla/dom/indexedDB/IndexedDatabase.h"
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#include "mozilla/dom/indexedDB/IDBObjectStore.h"
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#include "mozilla/dom/indexedDB/Key.h"
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#include "nsIIDBCursorWithValue.h"
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#include "nsCycleCollectionParticipant.h"
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class nsIRunnable;
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class nsIScriptContext;
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class nsPIDOMWindow;
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BEGIN_INDEXEDDB_NAMESPACE
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class IDBIndex;
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class IDBRequest;
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class IDBTransaction;
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class ContinueHelper;
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class ContinueObjectStoreHelper;
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class ContinueIndexHelper;
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class ContinueIndexObjectHelper;
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class IDBCursor : public nsIIDBCursorWithValue
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{
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friend class ContinueHelper;
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friend class ContinueObjectStoreHelper;
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friend class ContinueIndexHelper;
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friend class ContinueIndexObjectHelper;
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public:
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_NSIIDBCURSOR
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NS_DECL_NSIIDBCURSORWITHVALUE
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(IDBCursor)
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enum Type
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{
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OBJECTSTORE = 0,
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INDEXKEY,
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INDEXOBJECT
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};
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enum Direction
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{
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NEXT = 0,
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NEXT_UNIQUE,
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PREV,
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PREV_UNIQUE
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};
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// For OBJECTSTORE cursors.
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static
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already_AddRefed<IDBCursor>
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Create(IDBRequest* aRequest,
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IDBTransaction* aTransaction,
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IDBObjectStore* aObjectStore,
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Direction aDirection,
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const Key& aRangeKey,
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const nsACString& aContinueQuery,
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const nsACString& aContinueToQuery,
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const Key& aKey,
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StructuredCloneReadInfo& aCloneReadInfo);
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// For INDEXKEY cursors.
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static
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already_AddRefed<IDBCursor>
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Create(IDBRequest* aRequest,
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IDBTransaction* aTransaction,
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IDBIndex* aIndex,
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Direction aDirection,
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const Key& aRangeKey,
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const nsACString& aContinueQuery,
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const nsACString& aContinueToQuery,
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const Key& aKey,
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const Key& aObjectKey);
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// For INDEXOBJECT cursors.
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static
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already_AddRefed<IDBCursor>
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Create(IDBRequest* aRequest,
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IDBTransaction* aTransaction,
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IDBIndex* aIndex,
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Direction aDirection,
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const Key& aRangeKey,
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const nsACString& aContinueQuery,
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const nsACString& aContinueToQuery,
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const Key& aKey,
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const Key& aObjectKey,
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StructuredCloneReadInfo& aCloneReadInfo);
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IDBTransaction* Transaction()
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{
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return mTransaction;
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}
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static nsresult ParseDirection(const nsAString& aDirection,
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Direction* aResult);
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protected:
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IDBCursor();
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~IDBCursor();
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static
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already_AddRefed<IDBCursor>
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CreateCommon(IDBRequest* aRequest,
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IDBTransaction* aTransaction,
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IDBObjectStore* aObjectStore,
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Direction aDirection,
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const Key& aRangeKey,
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const nsACString& aContinueQuery,
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const nsACString& aContinueToQuery);
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nsresult
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ContinueInternal(const Key& aKey,
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PRInt32 aCount);
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nsRefPtr<IDBRequest> mRequest;
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nsRefPtr<IDBTransaction> mTransaction;
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nsRefPtr<IDBObjectStore> mObjectStore;
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nsRefPtr<IDBIndex> mIndex;
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JSObject* mScriptOwner;
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Type mType;
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Direction mDirection;
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nsCString mContinueQuery;
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nsCString mContinueToQuery;
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// These are cycle-collected!
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jsval mCachedKey;
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jsval mCachedPrimaryKey;
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jsval mCachedValue;
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Key mRangeKey;
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Key mKey;
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Key mObjectKey;
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StructuredCloneReadInfo mCloneReadInfo;
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Key mContinueToKey;
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bool mHaveCachedKey;
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bool mHaveCachedPrimaryKey;
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bool mHaveCachedValue;
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bool mRooted;
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bool mContinueCalled;
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bool mHaveValue;
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};
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END_INDEXEDDB_NAMESPACE
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#endif // mozilla_dom_indexeddb_idbcursor_h__
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