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- /*
- * Program type: Embedded Static SQL
- *
- * Description:
- * This program executes a stored procedure and selects from
- * a stored procedure. First, a list of projects an employee
- * is involved in is printed. Then the employee is added to
- * another project. The new list of projects is printed again.
- * The contents of this file are subject to the Interbase Public
- * License Version 1.0 (the "License"); you may not use this file
- * except in compliance with the License. You may obtain a copy
- * of the License at http://www.Inprise.com/IPL.html
- *
- * Software distributed under the License is distributed on an
- * "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express
- * or implied. See the License for the specific language governing
- * rights and limitations under the License.
- *
- * The Original Code was created by Inprise Corporation
- * and its predecessors. Portions created by Inprise Corporation are
- *
- * Copyright (C) 2000 Inprise Corporation
- * All Rights Reserved.
- * Contributor(s): ______________________________________.
- */
-
- #include "example.h"
- #include <stdlib.h>
- #include <string.h>
- #include <stdio.h>
-
- EXEC SQL INCLUDE SQLCA;
-
- void select_projects (short emp_no);
- void get_params (short *emp_no, char* proj_id);
- void pr_error (long status);
- int add_emp_proj (short emp_no,char * proj_id);
-
-
-
- int main (void)
- {
- BASED_ON employee.emp_no emp_no;
- BASED_ON project.proj_id proj_id;
-
- /*
- * Add employee with id 8 to project 'MAPDB'.
- */
- get_params(&emp_no, proj_id);
-
- /*
- * Display employee's current projects.
- */
- printf("\nCurrent projects for employee id: %d\n\n", emp_no);
- select_projects(emp_no);
-
- /*
- * Insert a new employee project row.
- */
- printf("\nAdd employee id: %d to project: %s\n", emp_no, proj_id);
- add_emp_proj(emp_no, proj_id);
-
- /*
- * Display employee's new current projects.
- */
- printf("\nCurrent projects for employee id: %d\n\n", emp_no);
- select_projects(emp_no);
-
- }
-
-
- /*
- * Select from a stored procedure.
- * Procedure 'get_emp_proj' gets employee's projects.
- */
- void select_projects(ARG(short, emp_no))
- ARGLIST(short emp_no)
- {
- BASED_ON project.proj_id proj_id;
-
- EXEC SQL
- WHENEVER SQLERROR GO TO SelError;
-
- /* Declare a cursor on the stored procedure. */
- EXEC SQL
- DECLARE projects CURSOR FOR
- SELECT proj_id FROM get_emp_proj (:emp_no)
- ORDER BY proj_id;
-
- EXEC SQL
- OPEN projects;
-
- /* Print employee projects. */
- while (SQLCODE == 0)
- {
- EXEC SQL
- FETCH projects INTO :proj_id;
-
- if (SQLCODE == 100)
- break;
-
- printf("\t%s\n", proj_id);
- }
-
- EXEC SQL
- CLOSE projects;
-
- EXEC SQL
- COMMIT RETAIN;
-
- SelError:
- if (SQLCODE)
- pr_error((long)gds__status);
- }
-
-
- /*
- * Execute a stored procedure.
- * Procedure 'add_emp_proj' adds an employee to a project.
- */
- add_emp_proj(ARG(short, emp_no),
- ARG(char *, proj_id))
- ARGLIST(BASED_ON employee.emp_no emp_no)
- ARGLIST(BASED_ON project.proj_id proj_id)
- {
- EXEC SQL
- WHENEVER SQLERROR GO TO AddError;
-
- EXEC SQL
- EXECUTE PROCEDURE add_emp_proj :emp_no, :proj_id;
-
- EXEC SQL
- COMMIT;
-
- AddError:
- if (SQLCODE)
- pr_error((long)gds__status);
- }
-
-
- /*
- * Set-up procedure parameters and clean-up old data.
- */
- void get_params(ARG(short *, emp_no),
- ARG(char *, proj_id))
- ARGLIST(BASED_ON employee.emp_no *emp_no)
- ARGLIST(BASED_ON project.proj_id proj_id)
- {
- *emp_no = 8;
- strcpy(proj_id, "MAPDB");
-
- EXEC SQL
- WHENEVER SQLERROR GO TO CleanupError;
-
- /* Cleanup: delete row from the previous run. */
- EXEC SQL
- DELETE FROM employee_project
- WHERE emp_no = 8 AND proj_id = "MAPDB";
-
- CleanupError:
- return;
- }
-
-
- /*
- * Print an error message.
- */
- void pr_error(ARG(long, status))
- ARGLIST(long status)
- {
- isc_print_sqlerror(SQLCODE, gds__status);
- }
-
-