- FIX assert failure when sorting JSON tables

modified:
  storage/connect/tabjson.cpp
  storage/connect/tabjson.h

storage/connect/tabjson.cpp

@@ -117,7 +117,8 @@ TDBJSN::TDBJSN(PJDEF tdp, PTXF txfp) : TDBDOS(tdp, txfp)
   Jmode = tdp->Jmode;
   Xcol = tdp->Xcol;
   Fpos = -1;
-  Spos = N = 0;
+//Spos = 0;
+  N = 0;
   Limit = tdp->Limit;
   NextSame = 0;
   SameRow = 0;
@@ -134,7 +135,7 @@ TDBJSN::TDBJSN(TDBJSN *tdbp) : TDBDOS(NULL, tdbp)
   Jmode = tdbp->Jmode;
   Xcol = tdbp->Xcol;
   Fpos = tdbp->Fpos;
-  Spos = tdbp->Spos;
+//Spos = tdbp->Spos;
   N = tdbp->N;
   Limit = tdbp->Limit;
   NextSame = tdbp->NextSame;
@@ -222,7 +223,7 @@ bool TDBJSN::OpenDB(PGLOBAL g)
     /*  Table already open replace it at its beginning.                */
     /*******************************************************************/
     Fpos= -1;
-    Spos = 0;
+//  Spos = 0;
     NextSame = 0;
     SameRow = 0;
   } else {
@@ -1299,7 +1300,6 @@ bool TDBJSON::OpenDB(PGLOBAL g)
     /*  Table already open replace it at its beginning.                */
     /*******************************************************************/
     Fpos= -1;
-    Spos = 0;
     NextSame = false;
     SameRow = 0;
     return false;

storage/connect/tabjson.h

@@ -94,7 +94,7 @@ class TDBJSN : public TDBDOS {
   JMODE Jmode;                     // MODE_OBJECT by default
   char *Xcol;                      // Name of expandable column
   int   Fpos;                      // The current row index
-  int   Spos;                      // DELETE start index
+//int   Spos;                      // DELETE start index
   int   N;                         // The current Rownum
 	int   Limit;		    				     // Limit of multiple values
   int   Pretty;                    // Depends on file structure
@@ -175,6 +175,9 @@ class TDBJSON : public TDBJSN {
   virtual int  GetMaxSize(PGLOBAL g);
   virtual void ResetSize(void);
 	virtual int  GetRecpos(void) {return Fpos;}
+  virtual int  GetProgCur(void) {return N;}
+  virtual bool SetRecpos(PGLOBAL g, int recpos)
+                {Fpos = recpos - 1; return false;}
   virtual bool OpenDB(PGLOBAL g);
   virtual int  ReadDB(PGLOBAL g);
   virtual bool PrepareWriting(PGLOBAL g) {return false;}