gecko-dev/dom/indexedDB/DatabaseInfo.h

184 строки
4.9 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Indexed Database.
*
* The Initial Developer of the Original Code is
* The Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Ben Turner <bent.mozilla@gmail.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef mozilla_dom_indexeddb_databaseinfo_h__
#define mozilla_dom_indexeddb_databaseinfo_h__
// Only meant to be included in IndexedDB source files, not exported.
#include "IndexedDatabase.h"
#include "Key.h"
#include "IDBObjectStore.h"
#include "nsRefPtrHashtable.h"
#include "nsHashKeys.h"
BEGIN_INDEXEDDB_NAMESPACE
struct ObjectStoreInfo;
typedef nsRefPtrHashtable<nsStringHashKey, ObjectStoreInfo>
ObjectStoreInfoHash;
class IDBDatabase;
class OpenDatabaseHelper;
struct DatabaseInfo
{
friend class IDBDatabase;
friend class OpenDatabaseHelper;
private:
DatabaseInfo()
: nextObjectStoreId(1),
nextIndexId(1),
cloned(false)
{ }
~DatabaseInfo();
static bool Get(nsIAtom* aId,
DatabaseInfo** aInfo);
static bool Put(DatabaseInfo* aInfo);
public:
static void Remove(nsIAtom* aId);
static void RemoveAllForOrigin(const nsACString& aOrigin);
bool GetObjectStoreNames(nsTArray<nsString>& aNames);
bool ContainsStoreName(const nsAString& aName);
ObjectStoreInfo* GetObjectStore(const nsAString& aName);
bool PutObjectStore(ObjectStoreInfo* aInfo);
void RemoveObjectStore(const nsAString& aName);
already_AddRefed<DatabaseInfo> Clone();
nsString name;
nsCString origin;
PRUint64 version;
nsCOMPtr<nsIAtom> id;
nsString filePath;
PRInt64 nextObjectStoreId;
PRInt64 nextIndexId;
bool cloned;
nsAutoPtr<ObjectStoreInfoHash> objectStoreHash;
NS_INLINE_DECL_REFCOUNTING(DatabaseInfo)
};
struct IndexInfo
{
#ifdef NS_BUILD_REFCNT_LOGGING
IndexInfo();
IndexInfo(const IndexInfo& aOther);
~IndexInfo();
#else
IndexInfo()
: id(LL_MININT), unique(false), multiEntry(false) { }
#endif
PRInt64 id;
nsString name;
nsString keyPath;
nsTArray<nsString> keyPathArray;
bool unique;
bool multiEntry;
};
struct ObjectStoreInfo
{
#ifdef NS_BUILD_REFCNT_LOGGING
ObjectStoreInfo();
#else
ObjectStoreInfo()
: id(0), nextAutoIncrementId(0), comittedAutoIncrementId(0) { }
#endif
ObjectStoreInfo(ObjectStoreInfo& aOther);
private:
#ifdef NS_BUILD_REFCNT_LOGGING
~ObjectStoreInfo();
#else
~ObjectStoreInfo() {}
#endif
public:
// Constant members, can be gotten on any thread
nsString name;
PRInt64 id;
nsString keyPath;
nsTArray<nsString> keyPathArray;
// Main-thread only members. This must *not* be touced on the database thread
nsTArray<IndexInfo> indexes;
// Database-thread members. After the ObjectStoreInfo has been initialized,
// these can *only* be touced on the database thread.
PRInt64 nextAutoIncrementId;
PRInt64 comittedAutoIncrementId;
// This is threadsafe since the ObjectStoreInfos are created on the database
// thread but then only used from the main thread. Ideal would be if we
// could transfer ownership from the database thread to the main thread, but
// we don't have that ability yet.
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(ObjectStoreInfo)
};
struct IndexUpdateInfo
{
#ifdef NS_BUILD_REFCNT_LOGGING
IndexUpdateInfo();
~IndexUpdateInfo();
#endif
PRInt64 indexId;
bool indexUnique;
Key value;
};
END_INDEXEDDB_NAMESPACE
#endif // mozilla_dom_indexeddb_databaseinfo_h__