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/******************************************************************************
 * Project:  libspatialindex - A C++ library for spatial indexing
 * Author:   Marios Hadjieleftheriou, mhadji@gmail.com
 ******************************************************************************
 * Copyright (c) 2003, Marios Hadjieleftheriou
 *
 * All rights reserved.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
******************************************************************************/

#pragma once

#include "tools/Tools.h"

#ifndef M_PI_2
#define M_PI_2 1.57079632679489661922
#endif

namespace SpatialIndex
{
	class Point;
	class LineSegment;
	class Region;


	typedef int64_t id_type;

	SIDX_DLL enum CommandType
	{
		CT_NODEREAD = 0x0,
		CT_NODEDELETE,
		CT_NODEWRITE
	};

	class SIDX_DLL InvalidPageException : public Tools::Exception
	{
	public:
		InvalidPageException(id_type id);
		virtual ~InvalidPageException() {}
		virtual std::string what();

	private:
		std::string m_error;
	}; // InvalidPageException

	//
	// Interfaces
	//

	class SIDX_DLL IShape : public Tools::ISerializable
	{
	public:
		virtual bool intersectsShape(const IShape& in) const = 0;
		virtual bool containsShape(const IShape& in) const = 0;
		virtual bool touchesShape(const IShape& in) const = 0;
		virtual void getCenter(Point& out) const = 0;
		virtual uint32_t getDimension() const = 0;
		virtual void getMBR(Region& out) const = 0;
		virtual double getArea() const = 0;
		virtual double getMinimumDistance(const IShape& in) const = 0;
		virtual ~IShape() {}
	}; // IShape

	class SIDX_DLL ITimeShape : public Tools::IInterval
	{
	public:
		virtual bool intersectsShapeInTime(const ITimeShape& in) const = 0;
		virtual bool intersectsShapeInTime(const Tools::IInterval& ivI, const ITimeShape& in) const = 0;
		virtual bool containsShapeInTime(const ITimeShape& in) const = 0;
		virtual bool containsShapeInTime(const Tools::IInterval& ivI, const ITimeShape& in) const = 0;
		virtual bool touchesShapeInTime(const ITimeShape& in) const = 0;
		virtual bool touchesShapeInTime(const Tools::IInterval& ivI, const ITimeShape& in) const = 0;
		virtual double getAreaInTime() const = 0;
		virtual double getAreaInTime(const Tools::IInterval& ivI) const = 0;
		virtual double getIntersectingAreaInTime(const ITimeShape& r) const = 0;
		virtual double getIntersectingAreaInTime(const Tools::IInterval& ivI, const ITimeShape& r) const = 0;
		virtual ~ITimeShape() {}
	}; // ITimeShape

	class SIDX_DLL IEvolvingShape
	{
	public:
		virtual void getVMBR(Region& out) const = 0;
		virtual void getMBRAtTime(double t, Region& out) const = 0;
		virtual ~IEvolvingShape() {}
	}; // IEvolvingShape

	class SIDX_DLL IEntry : public Tools::IObject
	{
	public:
		virtual id_type getIdentifier() const = 0;
		virtual void getShape(IShape** out) const = 0;
		virtual ~IEntry() {}
	}; // IEntry

	class SIDX_DLL INode : public IEntry, public Tools::ISerializable
	{
	public:
		virtual uint32_t getChildrenCount() const = 0;
		virtual id_type getChildIdentifier(uint32_t index) const = 0;
		virtual void getChildData(uint32_t index, uint32_t& len, byte** data) const = 0;
		virtual void getChildShape(uint32_t index, IShape** out) const = 0;
		virtual uint32_t getLevel() const = 0;
		virtual bool isIndex() const = 0;
		virtual bool isLeaf() const = 0;
		virtual ~INode() {}
	}; // INode

	class SIDX_DLL IData : public IEntry
	{
	public:
		virtual void getData(uint32_t& len, byte** data) const = 0;
		virtual ~IData() {}
	}; // IData

	class SIDX_DLL IDataStream : public Tools::IObjectStream
	{
	public:
		virtual IData* getNext() = 0;
		virtual ~IDataStream() {}
	}; // IDataStream

	class SIDX_DLL ICommand
	{
	public:
		virtual void execute(const INode& in) = 0;
		virtual ~ICommand() {}
	}; // ICommand

	class SIDX_DLL INearestNeighborComparator
	{
	public:
		virtual double getMinimumDistance(const IShape& query, const IShape& entry) = 0;
		virtual double getMinimumDistance(const IShape& query, const IData& data) = 0;
		virtual ~INearestNeighborComparator() {}
	}; // INearestNeighborComparator

	class SIDX_DLL IStorageManager
	{
	public:
		virtual void loadByteArray(const id_type id, uint32_t& len, byte** data) = 0;
		virtual void storeByteArray(id_type& id, const uint32_t len, const byte* const data) = 0;
		virtual void deleteByteArray(const id_type id) = 0;
		virtual ~IStorageManager() {}
	}; // IStorageManager

	class SIDX_DLL IVisitor
	{
	public:
		virtual void visitNode(const INode& in) = 0;
		virtual void visitData(const IData& in) = 0;
		virtual void visitData(std::vector<const IData*>& v) = 0;
		virtual ~IVisitor() {}
	}; // IVisitor

	class SIDX_DLL IQueryStrategy
	{
	public:
		virtual void getNextEntry(const IEntry& previouslyFetched, id_type& nextEntryToFetch, bool& bFetchNextEntry) = 0;
		virtual ~IQueryStrategy() {}
	}; // IQueryStrategy

	class SIDX_DLL IStatistics
	{
	public:
		virtual uint64_t getReads() const = 0;
		virtual uint64_t getWrites() const = 0;
		virtual uint32_t getNumberOfNodes() const = 0;
		virtual uint64_t getNumberOfData() const = 0;
		virtual ~IStatistics() {}
	}; // IStatistics

	class SIDX_DLL ISpatialIndex
	{
	public:
		virtual void insertData(uint32_t len, const byte* pData, const IShape& shape, id_type shapeIdentifier) = 0;
		virtual bool deleteData(const IShape& shape, id_type shapeIdentifier) = 0;
		virtual void containsWhatQuery(const IShape& query, IVisitor& v)  = 0;
		virtual void intersectsWithQuery(const IShape& query, IVisitor& v) = 0;
		virtual void pointLocationQuery(const Point& query, IVisitor& v) = 0;
		virtual void nearestNeighborQuery(uint32_t k, const IShape& query, IVisitor& v, INearestNeighborComparator& nnc) = 0;
		virtual void nearestNeighborQuery(uint32_t k, const IShape& query, IVisitor& v) = 0;
		virtual void selfJoinQuery(const IShape& s, IVisitor& v) = 0;
		virtual void queryStrategy(IQueryStrategy& qs) = 0;
		virtual void getIndexProperties(Tools::PropertySet& out) const = 0;
		virtual void addCommand(ICommand* in, CommandType ct) = 0;
		virtual bool isIndexValid() = 0;
		virtual void getStatistics(IStatistics** out) const = 0;
		virtual ~ISpatialIndex() {}

	}; // ISpatialIndex

	namespace StorageManager
	{
		SIDX_DLL enum StorageManagerConstants
		{
			EmptyPage = -0x1,
			NewPage = -0x1
		};

		class SIDX_DLL IBuffer : public IStorageManager
		{
		public:
			virtual uint64_t getHits() = 0;
			virtual void clear() = 0;
			virtual ~IBuffer() {}
		}; // IBuffer

		SIDX_DLL  IStorageManager* returnMemoryStorageManager(Tools::PropertySet& in);
		SIDX_DLL  IStorageManager* createNewMemoryStorageManager();

		SIDX_DLL  IStorageManager* returnDiskStorageManager(Tools::PropertySet& in);
		SIDX_DLL  IStorageManager* createNewDiskStorageManager(std::string& baseName, uint32_t pageSize);
		SIDX_DLL  IStorageManager* loadDiskStorageManager(std::string& baseName);

		SIDX_DLL  IBuffer* returnRandomEvictionsBuffer(IStorageManager& ind, Tools::PropertySet& in);
		SIDX_DLL  IBuffer* createNewRandomEvictionsBuffer(IStorageManager& in, uint32_t capacity, bool bWriteThrough);
	}

	//
	// Global functions
	//
	SIDX_DLL  std::ostream& operator<<(std::ostream&, const ISpatialIndex&);
	SIDX_DLL  std::ostream& operator<<(std::ostream&, const IStatistics&);
}

#include "Point.h"
#include "Region.h"
#include "LineSegment.h"
#include "TimePoint.h"
#include "TimeRegion.h"
#include "MovingPoint.h"
#include "MovingRegion.h"
#include "RTree.h"
#include "MVRTree.h"
#include "TPRTree.h"
#include "Version.h"


// typedef SpatialIndex::Tools::PoolPointer<Region> RegionPtr;
// typedef SpatialIndex::Tools::PoolPointer<Point> PointPtr;
// typedef SpatialIndex::Tools::PoolPointer<TimeRegion> TimeRegionPtr;
// typedef SpatialIndex::Tools::PoolPointer<MovingRegion> MovingRegionPtr;