зеркало из https://github.com/mozilla/pjs.git
164 строки
5.1 KiB
C++
164 строки
5.1 KiB
C++
/* ***** 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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* Kyle Huey <me@kylehuey.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_opendatabasehelper_h__
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#define mozilla_dom_indexeddb_opendatabasehelper_h__
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#include "AsyncConnectionHelper.h"
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#include "DatabaseInfo.h"
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#include "IDBDatabase.h"
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#include "IDBRequest.h"
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#include "nsIRunnable.h"
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class mozIStorageConnection;
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BEGIN_INDEXEDDB_NAMESPACE
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class OpenDatabaseHelper : public HelperBase
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{
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public:
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OpenDatabaseHelper(IDBOpenDBRequest* aRequest,
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const nsAString& aName,
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const nsACString& aASCIIOrigin,
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PRUint64 aRequestedVersion,
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bool aForDeletion)
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: HelperBase(aRequest), mOpenDBRequest(aRequest), mName(aName),
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mASCIIOrigin(aASCIIOrigin), mRequestedVersion(aRequestedVersion),
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mForDeletion(aForDeletion), mDatabaseId(nsnull), mCurrentVersion(0),
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mLastObjectStoreId(0), mLastIndexId(0), mState(eCreated),
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mResultCode(NS_OK), mLoadDBMetadata(false)
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{
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NS_ASSERTION(!aForDeletion || !aRequestedVersion,
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"Can't be for deletion and request a version!");
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}
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NS_DECL_ISUPPORTS
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NS_DECL_NSIRUNNABLE
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nsresult Init();
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nsresult Dispatch(nsIEventTarget* aDatabaseThread);
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nsresult RunImmediately();
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void SetError(nsresult rv)
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{
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NS_ASSERTION(NS_FAILED(rv), "Why are you telling me?");
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mResultCode = rv;
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}
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nsresult GetResultCode()
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{
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return mResultCode;
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}
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nsresult NotifySetVersionFinished();
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nsresult NotifyDeleteFinished();
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void BlockDatabase();
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nsIAtom* Id() const
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{
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return mDatabaseId.get();
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}
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IDBDatabase* Database() const
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{
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NS_ASSERTION(mDatabase, "Calling at the wrong time!");
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return mDatabase;
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}
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static
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nsresult CreateDatabaseConnection(const nsAString& aName,
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nsIFile* aDBFile,
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nsIFile* aFileManagerDirectory,
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mozIStorageConnection** aConnection);
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protected:
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// Methods only called on the main thread
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nsresult EnsureSuccessResult();
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nsresult StartSetVersion();
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nsresult StartDelete();
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nsresult GetSuccessResult(JSContext* aCx,
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jsval* aVal);
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void DispatchSuccessEvent();
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void DispatchErrorEvent();
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void ReleaseMainThreadObjects();
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// Methods only called on the DB thread
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nsresult DoDatabaseWork();
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private:
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// In-params.
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nsRefPtr<IDBOpenDBRequest> mOpenDBRequest;
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nsString mName;
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nsCString mASCIIOrigin;
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PRUint64 mRequestedVersion;
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bool mForDeletion;
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nsCOMPtr<nsIAtom> mDatabaseId;
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// Out-params.
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nsTArray<nsRefPtr<ObjectStoreInfo> > mObjectStores;
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PRUint64 mCurrentVersion;
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nsString mDatabaseFilePath;
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PRInt64 mLastObjectStoreId;
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PRInt64 mLastIndexId;
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nsRefPtr<IDBDatabase> mDatabase;
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// State variables
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enum OpenDatabaseState {
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eCreated = 0, // Not yet dispatched to the DB thread
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eDBWork, // Waiting to do/doing work on the DB thread
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eFiringEvents, // Waiting to fire/firing events on the main thread
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eSetVersionPending, // Waiting on a SetVersionHelper
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eSetVersionCompleted, // SetVersionHelper is done
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eDeletePending, // Waiting on a DeleteDatabaseHelper
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eDeleteCompleted, // DeleteDatabaseHelper is done
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};
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OpenDatabaseState mState;
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nsresult mResultCode;
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nsRefPtr<FileManager> mFileManager;
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nsRefPtr<DatabaseInfo> mDBInfo;
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bool mLoadDBMetadata;
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};
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END_INDEXEDDB_NAMESPACE
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#endif // mozilla_dom_indexeddb_opendatabasehelper_h__
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