Method ReadDB

storage/connect/tabmul.cpp:426–472

/ ReadDB: Data Base read routine for MUL access method. */ /

/*  ReadDB: Data Base read routine for MUL access method.              */
/***********************************************************************/
int TDBMUL::ReadDB(PGLOBAL g)
  {
  int rc;

  if (NumFiles == 0)
    return RC_EF;
  else if (To_Kindex) {
    /*******************************************************************/
    /*  Reading is by an index table.                                  */
    /*******************************************************************/
    strcpy(g->Message, MSG(NO_INDEX_READ));
    rc = RC_FX;
  } else {
    /*******************************************************************/
    /*  Now start the reading process.                                 */
    /*******************************************************************/
   retry:
    rc = Tdbp->ReadDB(g);

    if (rc == RC_EF) {
      if (Tdbp->GetDef()->GetPseudo() & 1)
        // Total number of rows met so far
        Rows += Tdbp->RowNumber(g) - 1;

      if (++iFile < NumFiles) {
        /***************************************************************/
        /*  Continue reading from next table file.                     */
        /***************************************************************/
        Tdbp->CloseDB(g);
        Tdbp->SetUse(USE_READY);
        Tdbp->SetFile(g, Filenames[iFile]);
        Tdbp->ResetSize();
        ResetDB();

        if (Tdbp->OpenDB(g))     // Re-open with new file name
          return RC_FX;

        goto retry;
        } // endif iFile

    } else if (rc == RC_FX)
      strcat(strcat(strcat(g->Message, " ("), Tdbp->GetFile(g)), ")");

  } // endif To_Kindex

  return rc;
  } // end of ReadDB

/***********************************************************************/
/*  Data Base write routine for MUL access method.                     */