gen.h

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//--------------------------------------------------------------------
//   gen.h
//   -----    
//   Defined: TGenerator
//
//   Moving point workload generator v 1.1 
//   Copyright(c) 1999-2001, Aalborg University
//

#ifndef __GEN_H
#define __GEN_H

#include <fstream.h>
#include "params.h"
#include "pool.h"

#define GEN_MAXSPEEDS     5
#define GEN_MINSP         10      // minimum speed of the object is maxspeed * 1 / GEN_MINSP
#define GEN_ACCPART       6       // 1 / GEN_ACCPART part of the segment between to hubs
                                  // is for acceleration (deceleration)
extern bool gen_binary;

//-------------------------------------------------------------------
class TGenerator
{
public:
   TGenerator (TParams& params);
   ~TGenerator ();

   void Generate       ();

private:
   void GenerateLoad    ();
   void UpdatePoint     (float CT, bool newobj = false, bool init = false);
   void GenerateQueries (float CT);
   void GenerateRandomV (TMovingPoint* point);
   void OutLoadPoint    (TMovingPoint& key);

   char   table_name[30];
   int    load;              // If there is a separate load file generated
                             // 0 - no load, a series of insertions at time 0  
                             // 1 - load, 2 - no load, gradual population of index 
   int    threeD;            // 0, 2 - 2D data, 3 - 3D data, 1 - 1D data  
   long   points;            // Total number of moving points
   long   hubs;              // Number of "airports"
   double newObjects;        // 0 - no new objs introduced, 1 - objs are replaced once, etc.

   double total;             // Length of the simulation in time units
   long   totalOp;           // Length of the simulation in operations (insertions)
   double updateInterval;    // Average interval between two successive updates of object
                             // If 0 - no updates are generated at all
 
   double spaceX;            // Dimensions of the "airspace"
   double spaceY;
   double spaceZ;

   double speeds[GEN_MAXSPEEDS]; // Possible speeds of moving objects
   long   numObjTypes;
   double altitudes[GEN_MAXSPEEDS]; // Possible altitudes of moving objects

   double qInterval;      // Interval between query generation events     
   long   qIntervalOp;    // Interval between query generation events in insertions
   long   qQuantity;      // Number of queries generated at each query generation event
   double qWindow;        // W - Querying time window
   double qSize;          // Avg. size of spatial part of a query (fraction of "airspace")
   double qTSize;         // Size of a temporal query window (For type 2 and 3 queries)

   double qType1;         // Parts of different types of queries in a query mix 
   double qType2;      
   double qType3;      

   double tref;       // Reference time     
   double noIntOp;    // new object introduction interval (in operations)
   long   maxID;      // maximum obj. id used so far     

   ofstream sqlf;     // generated "sql" file
   ofstream datf;     // generated "dat" file for loading

   TPool*   pool;     // a pool of moving points
   THub*    cities;   // a pool of hubs
};
#endif