rtpredicate.cpp

此文件包含了在linux下实现tpr-tree索引的源代码

//--------------------------------------------------------------------
//      RTpredicate.cpp
//      ---------------
//      Implements the query predicate  
// 
//      TPR-tree - Index for continuously moving objects
//      July 2001 release, Aalborg University
//

#include "rt.h"

//----------------------------------------------------
int RTpredicate::Consistent(const GiSTentry& entry) const
{
  RTentry &rtentry = (RTentry&) entry;

  if (entry.IsLeaf())
  {
    switch (oper)
    {
     case RToverlap:
       return(rtentry.bbox().overlap_n1(*value));
/*   
     case RTcontains:
       return(rtentry.bbox().contain_n(*value));
     case RTcontained:
       return(rtentry.bbox().contained_n(*value));
*/
     case RTEqual:        // used also for delete operation
       return ptr == (GiSTpage) -1 ? rtentry.bbox().isEqual_n(*value) : 
                                     ptr == entry.Ptr();
     default:
       assert(0);
       return (0);
    }
  }
  else
  {
    switch (oper)
    {
     case RToverlap:
//     case RTcontained:
       return rtentry.bbox().overlap_n1(*value);

/*   
     case RTcontains:
*/
     case RTEqual:  // used also for delete operation 
       return ptr == (GiSTpage) -1 ? rtentry.bbox().contain_n(*value) :  
                                     rtentry.bbox().contain_n1(*value);
     default:
       assert(0);
       return (0);
    }
  }
}