## modules/ud/ud_serial.c

/* [<][>][^][v][top][bottom][index][help] */

## FUNCTIONS

This source file includes following functions.

1. create_serial

       1 /***************************************
       2
       3   Functions for handling serials
       4
       5   Status: NOT REVUED, NOT TESTED
       6
       7  Author(s):       Andrei Robachevsky
       8
       9   ******************/ /******************
      10   Modification History:
      11         andrei (08/02/2000) Created.
      12   ******************/ /******************
      13   Copyright (c) 2000                              RIPE NCC
      14
      15   All Rights Reserved
      16
      17   Permission to use, copy, modify, and distribute this software and its
      18   documentation for any purpose and without fee is hereby granted,
      19   provided that the above copyright notice appear in all copies and that
      20   both that copyright notice and this permission notice appear in
      21   supporting documentation, and that the name of the author not be
      22   used in advertising or publicity pertaining to distribution of the
      23   software without specific, written prior permission.
      24
      25   THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
      26   ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS; IN NO EVENT SHALL
      27   AUTHOR BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
      28   DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
      29   AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
      30   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
      31  ***************************************/
      32 #include "ud.h"
      33 #include "ud_int.h"
      34
      35 /************************************************************
      36 * create_serial()                                           *
      37 *                                                           *
      38 * Creates a serial record for given transaction             *
      39 * For updates creates 2 serial records (DEL+ADD)            *
      40 *                                                           *
      41 * Important fields of transaction are:                      *
      42 * tr->action        TR_CREATE/TR_UPDATE/TR_DELETE           *
      43 * tr->object_id     should be filled in                     *
      44 * tr->sequence_id   should be set to current                *
      45 *                                                           *
      46 * Returns:                                                  *
      47 *  currnt serial number.                                    *
      48 *  -1 in case of an error                                   *
      49 *                                                           *
      50 *************************************************************/
      51
      52 long create_serial(Transaction_t *tr)
         /* [<][>][^][v][top][bottom][index][help] */
      53 {
      54 static char query[STR_M];
      55 long current_serial=0;
      56 int sql_err;
      57
      58 /* fprintf(stderr, "creating serial\n"); */
      59
      60   if(!ACT_CREATE(tr->action)) {
      61     /* set the atlast field of the latest record for this object to 0 */
      62     /* because it is moved to history */
      63     sprintf(query, "UPDATE serials SET atlast=0 "
      64                    "WHERE object_id=%ld "
      65                    "AND sequence_id=%ld ", tr->object_id, tr->sequence_id-1);
      66
      67     sql_err = SQ_execute_query(tr->sql_connection, query, (SQ_result_set_t **)NULL);
      68     if (sql_err) { // we can have empty updates, but not errors
      69         fprintf(stderr, "E: <create_serial>: cannot update %s\n", query);
      70         current_serial=-1;
      71     }
      72
      73
      74     /* generate DEL serial */
      75     sprintf(query, "INSERT serials SET "
      76                    "object_id=%ld, "
      77                    "sequence_id=%ld, "
      78                    "atlast=0, "
      79                    "operation=%d ", tr->object_id, tr->sequence_id-1, OP_DEL);
      80
      81     sql_err = SQ_execute_query(tr->sql_connection, query, (SQ_result_set_t **)NULL);
      82     if (sql_err) {
      83         fprintf(stderr, "E: <create_serial>: cannot insert %s\n",query);
      84         current_serial=-1;
      85     }
      86
      87     if(current_serial!=-1)current_serial=mysql_insert_id(tr->sql_connection);
      88
      89     /* there is nothing more to do when OP_DEL */
      90     if(ACT_DELETE(tr->action)) return(current_serial);
      91   }
      92
      93   /* now insert creation serial */
      94   sprintf(query, "INSERT serials SET "
      95                  "object_id=%ld, "
      96                  "sequence_id=%ld, "
      97                  "atlast=1, "
      98                  "operation=%d ", tr->object_id, tr->sequence_id, OP_ADD);
      99
     100   sql_err = SQ_execute_query(tr->sql_connection, query, (SQ_result_set_t **)NULL);
     101   if (sql_err) {
     102         fprintf(stderr, "E: <create_serial>: cannot insert %s\n",query);
     103         current_serial=-1;
     104   }
     105
     106   if(current_serial!=-1)current_serial=mysql_insert_id(tr->sql_connection);
     107
     108 return(current_serial);
     109 }
     110

/* [<][>][^][v][top][bottom][index][help] */