Facade base class to provide all data access

Server/DataStructures/BaseDataFacade.h

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+/*
+    open source routing machine
+    Copyright (C) Dennis Luxen, others 2010
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU AFFERO General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+any later version.
+
+This program 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 General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+or see http://www.gnu.org/licenses/agpl.txt.
+ */
+
+#ifndef QUERY_DATA_FACADE_H
+#define QUERY_DATA_FACADE_H
+
+//Exposes all data access interfaces to the algorithms via base class ptr
+
+#include "../../DataStructures/Coordinate.h"
+#include "../../DataStructures/PhantomNodes.h"
+#include "../../DataStructures/TurnInstructions.h"
+#include "../../typedefs.h"
+
+#include <string>
+
+class QueryDataFacade {
+public:
+    QueryDataFacade() { }
+    virtual ~QueryDataFacade() { }
+
+    //search graph access
+    //TODO
+
+    //node and edge information access
+    virtual FixedPointCoordinate GetCoordinateOfNode(
+        const unsigned id
+    ) const = 0;
+
+    virtual TurnInstruction GetTurnInstructionForEdgeID(
+        const unsigned id
+    ) const  = 0;
+
+    virtual NodeID GetNumberOfNodes( ) const  = 0;
+
+    virtual bool LocateClosestEndPointForCoordinate(
+        const FixedPointCoordinate& input_coordinate,
+        FixedPointCoordinate& result,
+        const unsigned zoom_level = 18
+    ) const  = 0;
+
+    virtual bool FindPhantomNodeForCoordinate(
+        const FixedPointCoordinate & input_coordinate,
+        PhantomNode & resulting_phantom_node,
+        const unsigned zoom_level
+    ) const  = 0;
+
+    virtual unsigned GetCheckSum() const  = 0;
+
+    virtual unsigned GetNameIndexFromEdgeID(const unsigned id) const  = 0;
+    virtual void GetName(
+        const unsigned name_id,
+        std::string & result
+    ) const = 0;
+
+};
+
+
+#endif // QUERY_DATA_FACADE_H