/*******************************************************************************
**                                                                        
** Source File Name = partrep.c  1.3                                      
**                                                                        
** Licensed Materials - Property of IBM                                   
**                                                                        
** (C) COPYRIGHT International Business Machines Corp. 1995, 1999
** All Rights Reserved.                                                   
**                                                                        
** US Government Users Restricted Rights - Use, duplication or            
** disclosure restricted by GSA ADP Schedule Contract with IBM Corp.      
**                                                                        
**                                                                        
**    PURPOSE :                                                           
**        Use recursive SQL to generate an exploding parts list.
**                                                                        
** For more information about these samples see the README file.
**
** For more information on programming in CLI see the:
**     - "Building CLI Applications" section of the Application Building Guide, and the
**     - CLI Guide and Reference.
**
** For more information on the SQL language see the SQL Reference.
**
*******************************************************************************/

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sqlcli1.h>
#include "samputil.h"          /* Header file for CLI sample code */

/* For the Macintosh environment when generating 68K applications */
#ifdef DB268K
   /* Need to include ASLM for 68K applications */
   #include <LibraryManager.h>
#endif

/*
 Global Variables for user id and password.
 To keep samples simple, not a recommended practice.
*/
extern SQLCHAR server[SQL_MAX_DSN_LENGTH + 1] ;
extern SQLCHAR uid[MAX_UID_LENGTH + 1] ;
extern SQLCHAR pwd[MAX_PWD_LENGTH + 1] ;

/**  main  **/
int main( int argc, char * argv[] ) {

    SQLHANDLE henv, hdbc, hstmt ;
    SQLRETURN rc ;

    SQLCHAR * stmt = ( SQLCHAR * )

    "WITH mainp (level, prod_num, part_num) AS "
      "( SELECT 1, root.prod_num, root.part_num "
         "FROM prod_parts root "
         "WHERE root.prod_num = pnum(cast(? as integer)) "
        "UNION ALL "
        "SELECT parent.level + 1, sub.prod_num, sub.part_num "
         "FROM mainp parent, prod_parts sub "
         "WHERE parent.part_num = sub.prod_num "
         "AND parent.level < 2 "
       ") "
    "SELECT distinct "
      "m.level, m.prod_num, m.part_num "
      "FROM mainp m " ;

    SQLINTEGER Prod_Num[] = {
       990110,
       990120
    } ;

    SQLINTEGER row_array_size = 2 ;

    int i, j ;

/* For the Macintosh environment when generating 68K applications */
#ifdef DB268K
   /* Before making any API calls for 68K environment, need to initialize the
      Library Manager */
   InitLibraryManager(0,kCurrentZone,kNormalMemory);
   atexit(CleanupLibraryManager);
#endif

    /* macro to initalize server, uid and pwd */
    INIT_UID_PWD ;

    /* allocate an environment handle */
    rc = SQLAllocHandle( SQL_HANDLE_ENV, SQL_NULL_HANDLE, &henv ) ;
    if ( rc != SQL_SUCCESS ) return( terminate( henv, rc ) ) ;

    /* allocate a connect handle, and connect */
    rc = DBconnect( henv, &hdbc ) ;
    if ( rc != SQL_SUCCESS ) return( terminate( henv, rc ) ) ;

    rc = SQLAllocHandle( SQL_HANDLE_STMT, hdbc, &hstmt ) ;
    CHECK_HANDLE( SQL_HANDLE_DBC, hdbc, rc ) ;

    rc = SQLSetStmtAttr( hstmt,
                         SQL_ATTR_PARAMSET_SIZE,
                         ( SQLPOINTER ) row_array_size,
                         0
                       ) ;
    CHECK_HANDLE( SQL_HANDLE_STMT, hstmt, rc ) ;

    rc = SQLBindParameter( hstmt,
                           1,
                           SQL_PARAM_INPUT,
                           SQL_C_LONG,
                           SQL_INTEGER,
                           0,
                           0,
                           Prod_Num,
                           0,
                           NULL
                         ) ;
    CHECK_HANDLE( SQL_HANDLE_STMT, hstmt, rc ) ;

    rc = SQLExecDirect( hstmt, stmt, SQL_NTS ) ;
    /* Ignore Warnings */
    if ( rc != SQL_SUCCESS_WITH_INFO )
       CHECK_HANDLE( SQL_HANDLE_STMT, hstmt, rc ) ;

    if ( print_results( hstmt ) != SQL_SUCCESS )
       printf( "> Error processing Statement\n" ) ;

    rc = SQLFreeHandle( SQL_HANDLE_STMT, hstmt ) ;
    CHECK_HANDLE( SQL_HANDLE_STMT, hstmt, rc ) ;

    /* COMMIT, free resources and exit */

    rc = SQLEndTran( SQL_HANDLE_DBC, hdbc, SQL_COMMIT ) ;
    CHECK_HANDLE( SQL_HANDLE_DBC, hdbc, rc ) ;

    printf( "\n>Disconnecting .....\n" ) ;
    rc = SQLDisconnect( hdbc ) ;
    CHECK_HANDLE( SQL_HANDLE_DBC, hdbc, rc ) ;

    rc = SQLFreeHandle( SQL_HANDLE_DBC, hdbc ) ;
    CHECK_HANDLE( SQL_HANDLE_DBC, hdbc, rc ) ;

    rc = SQLFreeHandle( SQL_HANDLE_ENV,  henv ) ;
    if ( rc != SQL_SUCCESS ) return( terminate( henv, rc ) ) ;

    return( SQL_SUCCESS ) ;

}                                  /* end main */