1 files changed, 61 insertions, 0 deletions

diff --git a/common/remoteidmap.h b/common/remoteidmap.h
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+++ b/common/remoteidmap.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2016 Christian Mollekopf <mollekopf@kolabsys.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) version 3, or any
+ * later version accepted by the membership of KDE e.V. (or its
+ * successor approved by the membership of KDE e.V.), which shall
+ * act as a proxy defined in Section 6 of version 3 of the license.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#include "sink_export.h"
+
+#include "storage.h"
+
+namespace Sink {
+
+/**
+ * A remoteId mapping
+ */
+class SINK_EXPORT RemoteIdMap
+{
+public:
+    RemoteIdMap(Sink::Storage::Transaction &);
+
+    /**
+     * Records a localId to remoteId mapping
+     */
+    void recordRemoteId(const QByteArray &bufferType, const QByteArray &localId, const QByteArray &remoteId);
+    void removeRemoteId(const QByteArray &bufferType, const QByteArray &localId, const QByteArray &remoteId);
+    void updateRemoteId(const QByteArray &bufferType, const QByteArray &localId, const QByteArray &remoteId);
+
+    /**
+     * Tries to find a local id for the remote id, and creates a new local id otherwise.
+     *
+     * The new local id is recorded in the local to remote id mapping.
+     */
+    QByteArray resolveRemoteId(const QByteArray &type, const QByteArray &remoteId);
+
+    /**
+     * Tries to find a remote id for a local id.
+     *
+     * This can fail if the entity hasn't been written back to the server yet.
+     */
+    QByteArray resolveLocalId(const QByteArray &bufferType, const QByteArray &localId);
+
+private:
+    Sink::Storage::Transaction &mTransaction;
+};
+
+}