зеркало из https://github.com/mozilla/gecko-dev.git
74 строки
2.4 KiB
C++
74 строки
2.4 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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_cache_DBAction_h
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#define mozilla_dom_cache_DBAction_h
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#include "mozilla/dom/cache/Action.h"
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#include "mozilla/RefPtr.h"
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#include "nsString.h"
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class mozIStorageConnection;
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class nsIFile;
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namespace mozilla {
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namespace dom {
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namespace cache {
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Result<nsCOMPtr<mozIStorageConnection>, nsresult> OpenDBConnection(
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const QuotaInfo& aQuotaInfo, nsIFile& aDBFile);
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class DBAction : public Action {
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protected:
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// The mode specifies whether the database should already exist or if its
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// ok to create a new database.
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enum Mode { Existing, Create };
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explicit DBAction(Mode aMode);
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// Action objects are deleted through their base pointer
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virtual ~DBAction();
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// Just as the resolver must be ref'd until resolve, you may also
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// ref the DB connection. The connection can only be referenced from the
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// target thread and must be released upon resolve.
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virtual void RunWithDBOnTarget(SafeRefPtr<Resolver> aResolver,
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const QuotaInfo& aQuotaInfo, nsIFile* aDBDir,
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mozIStorageConnection* aConn) = 0;
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private:
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void RunOnTarget(SafeRefPtr<Resolver> aResolver, const QuotaInfo& aQuotaInfo,
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Data* aOptionalData) override;
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nsresult OpenConnection(const QuotaInfo& aQuotaInfo, nsIFile* aQuotaDir,
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mozIStorageConnection** aConnOut);
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const Mode mMode;
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};
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class SyncDBAction : public DBAction {
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protected:
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explicit SyncDBAction(Mode aMode);
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// Action objects are deleted through their base pointer
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virtual ~SyncDBAction();
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virtual nsresult RunSyncWithDBOnTarget(const QuotaInfo& aQuotaInfo,
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nsIFile* aDBDir,
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mozIStorageConnection* aConn) = 0;
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private:
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virtual void RunWithDBOnTarget(SafeRefPtr<Resolver> aResolver,
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const QuotaInfo& aQuotaInfo, nsIFile* aDBDir,
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mozIStorageConnection* aConn) override;
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};
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} // namespace cache
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_cache_DBAction_h
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