srv_alt_descfmt

Description

Describe the aggregate operator of a compute row column and the format of the column data returned to the client.

Syntax

CS_RETCODE srv_alt_descfmt(spp, altid, optype,
                  operand, item, clfmtp)
 
 SRV_PROC         *spp;
 CS_INT                altid;
 CS_INT                optype;
 CS_TINYINT        operand;
 CS_INT                item;
 CS_DATAFMT     *clfmtp;

Parameters

Returns

Examples

Example 1

#include       <ospublic.h>

 /*

 ** Local Prototype

 */

 CS_RETCODE      ex_srv_alt_descfmt PROTOTYPE((

 SRV_PROC        *sproc,

 CS_INT          altid,

 CS_DATAFMT      clfmtp[]

 ));

/*

 ** EX_SRV_ALT_DESCFMT

 **   An example routine to describe the aggregate operator of 2

 **   compute row columns and the format of each of the two column

 **   data returned to the client. We will do the sum on the first

 **   column and average on the second column.

 **

 ** Arguments:

 **   sproc     A pointer to an internal thread control structure.

 **   altid     The id for the compute row in which this compute

 **             column is contained. The altid is obtained by

 **             calling srv_alt_header.

 **   clfmtp    A pointer to the array of structures describing 

 **             the format of the compute row column

 **             data when the client receives it.

 **

 ** Returns:

 **   CS_SUCCEED     If the aggregate operator and the datatype of

 **                  the compute row columns were successfully

 **                  described.

 **   CS_FAIL        An error was detected.

 */

 CS_RETCODE     ex_srv_alt_descfmt(sproc, altid, clfmtp)

 SRV_PROC       *sproc;

 CS_INT         altid;

 CS_DATAFMT     clfmtp[];

 {

      /*

      ** Describe the aggregate operator of the first compute row

      ** column and the format of the column data.

      */

      if ( srv_alt_descfmt(sproc, altid, (CS_INT)1, CS_OP_SUM,

           (CS_TINYINT)1, &clfmtp[0]) == CS_FAIL )

      {

           return(CS_FAIL);

      }

     /*

      ** Now do the same for the second column if (srv_alt_descfmt

      ** (sproc, altid, (CS_INT)2, CS_OP_AVG, (CS_TINYINT)2,

      ** &clfmtp[1]) == CS_FAIL )

      {

           return(CS_FAIL);

      }

      */

      return(CS_SUCCEED);

 }

Usage

See also