gecko/dom/indexedDB/OpenDatabaseHelper.h

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/* ***** 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>
* Kyle Huey <me@kylehuey.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_opendatabasehelper_h__
#define mozilla_dom_indexeddb_opendatabasehelper_h__
#include "AsyncConnectionHelper.h"
#include "DatabaseInfo.h"
#include "IDBDatabase.h"
#include "IDBRequest.h"
#include "nsIRunnable.h"
class mozIStorageConnection;
BEGIN_INDEXEDDB_NAMESPACE
class OpenDatabaseHelper : public HelperBase
{
public:
OpenDatabaseHelper(IDBOpenDBRequest* aRequest,
const nsAString& aName,
const nsACString& aASCIIOrigin,
PRUint64 aRequestedVersion,
bool aForDeletion)
: HelperBase(aRequest), mOpenDBRequest(aRequest), mName(aName),
mASCIIOrigin(aASCIIOrigin), mRequestedVersion(aRequestedVersion),
mForDeletion(aForDeletion), mDatabaseId(nsnull), mCurrentVersion(0),
mDataVersion(DB_SCHEMA_VERSION), mLastObjectStoreId(0),
mLastIndexId(0), mState(eCreated), mResultCode(NS_OK)
{
NS_ASSERTION(!aForDeletion || !aRequestedVersion,
"Can't be for deletion and request a version!");
}
NS_DECL_ISUPPORTS
NS_DECL_NSIRUNNABLE
nsresult Init();
nsresult Dispatch(nsIEventTarget* aDatabaseThread);
nsresult RunImmediately();
void SetError(nsresult rv)
{
NS_ASSERTION(NS_FAILED(rv), "Why are you telling me?");
mResultCode = rv;
}
nsresult GetResultCode()
{
return mResultCode;
}
nsresult NotifySetVersionFinished();
nsresult NotifyDeleteFinished();
void BlockDatabase();
nsIAtom* Id() const
{
return mDatabaseId.get();
}
IDBDatabase* Database() const
{
NS_ASSERTION(mDatabase, "Calling at the wrong time!");
return mDatabase;
}
protected:
// Methods only called on the main thread
nsresult EnsureSuccessResult();
nsresult StartSetVersion();
nsresult StartDelete();
nsresult GetSuccessResult(JSContext* aCx,
jsval* aVal);
void DispatchSuccessEvent();
void DispatchErrorEvent();
void ReleaseMainThreadObjects();
// Methods only called on the DB thread
nsresult DoDatabaseWork();
private:
// In-params.
nsRefPtr<IDBOpenDBRequest> mOpenDBRequest;
nsString mName;
nsCString mASCIIOrigin;
PRUint64 mRequestedVersion;
bool mForDeletion;
nsCOMPtr<nsIAtom> mDatabaseId;
// Out-params.
nsTArray<nsAutoPtr<ObjectStoreInfo> > mObjectStores;
PRUint64 mCurrentVersion;
PRUint32 mDataVersion;
nsString mDatabaseFilePath;
PRInt64 mLastObjectStoreId;
PRInt64 mLastIndexId;
nsRefPtr<IDBDatabase> mDatabase;
// State variables
enum OpenDatabaseState {
eCreated = 0, // Not yet dispatched to the DB thread
eDBWork, // Waiting to do/doing work on the DB thread
eFiringEvents, // Waiting to fire/firing events on the main thread
eSetVersionPending, // Waiting on a SetVersionHelper
eSetVersionCompleted, // SetVersionHelper is done
eDeletePending, // Waiting on a DeleteDatabaseHelper
eDeleteCompleted, // DeleteDatabaseHelper is done
};
OpenDatabaseState mState;
nsresult mResultCode;
};
END_INDEXEDDB_NAMESPACE
#endif // mozilla_dom_indexeddb_opendatabasehelper_h__