зеркало из https://github.com/mozilla/gecko-dev.git
55 строки
1.7 KiB
C++
55 строки
1.7 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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef DOM_QUOTA_QUOTADATABASEHELPER_H
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#define DOM_QUOTA_QUOTADATABASEHELPER_H
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#include "mozilla/dom/quota/QuotaCommon.h"
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#include "mozIStorageConnection.h"
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#include "nsCOMPtr.h"
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#include "nsString.h"
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namespace mozilla::dom::quota {
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/**
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* This class provides a RAII wrap of attaching and detaching database
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* in a given C++ scope. It is guaranteed that an attached database will
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* be detached even if you have an exception or return early.
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*
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* @param aConnection
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* The connection to attach a database to.
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* @param aDatabaseFile
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* The database file to attach.
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* @param aSchemaName
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* The schema-name. Can be any string literal which is supported by the
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* underlying database. For more details about schema-name, see
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* https://www.sqlite.org/lang_attach.html
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*/
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class MOZ_STACK_CLASS AutoDatabaseAttacher final {
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public:
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explicit AutoDatabaseAttacher(nsCOMPtr<mozIStorageConnection> aConnection,
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nsCOMPtr<nsIFile> aDatabaseFile,
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const nsLiteralCString& aSchemaName);
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~AutoDatabaseAttacher();
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AutoDatabaseAttacher() = delete;
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[[nodiscard]] nsresult Attach();
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[[nodiscard]] nsresult Detach();
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private:
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nsCOMPtr<mozIStorageConnection> mConnection;
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nsCOMPtr<nsIFile> mDatabaseFile;
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const nsLiteralCString mSchemaName;
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bool mAttached;
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};
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} // namespace mozilla::dom::quota
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#endif // DOM_QUOTA_QUOTADATABASEHELPER_H
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