/*************************************************************************** * Licensed Materials - Property of IBM and/or HCL * * IBM Informix Client-SDK * * Copyright IBM Corporation 1997, 2013 All rights reserved. * (c) Copyright HCL Technologies Ltd. 2017. All Rights Reserved. * * * * * * Title: rcupdate.c * * Description: To update a row and collection column * To update the row, we update one of the elements of * the row and then update the entire row on the database * To update the list, we add an element to the list and * then update the list on the database * *************************************************************************** */ #include #include #include #ifndef NO_WIN32 #include #include #include #endif /*NO_WIN32*/ #include "infxcli.h" #define BUFFER_SIZE 25 #define ERRMSG_LEN 200 SQLCHAR defDsn[] = "odbc_demo"; SQLINTEGER checkError (SQLRETURN rc, SQLSMALLINT handleType, SQLHANDLE handle, SQLCHAR* errmsg) { SQLRETURN retcode = SQL_SUCCESS; SQLSMALLINT errNum = 1; SQLCHAR sqlState[6]; SQLINTEGER nativeError; SQLCHAR errMsg[ERRMSG_LEN]; SQLSMALLINT textLengthPtr; if ((rc != SQL_SUCCESS) && (rc != SQL_SUCCESS_WITH_INFO)) { while (retcode != SQL_NO_DATA) { retcode = SQLGetDiagRec (handleType, handle, errNum, sqlState, &nativeError, errMsg, ERRMSG_LEN, &textLengthPtr); if (retcode == SQL_INVALID_HANDLE) { fprintf (stderr, "checkError function was called with an invalid handle!!\n"); return 1; } if ((retcode == SQL_SUCCESS) || (retcode == SQL_SUCCESS_WITH_INFO)) fprintf (stderr, "ERROR: %d: %s : %s \n", nativeError, sqlState, errMsg); errNum++; } fprintf (stderr, "%s\n", errmsg); return 1; /* all errors on this handle have been reported */ } else return 0; /* no errors to report */ } int main (long argc, char* argv[] ) { /* Declare variables */ /* Handles */ SQLHDBC hdbc; SQLHENV henv; SQLHSTMT hstmt; HINFX_RC hrow; HINFX_RC hlist; /* Miscellaneous variables */ SQLCHAR dsn[20]; /*name of the DSN used for connecting to the database*/ SQLRETURN rc = 0; SQLINTEGER in; SQLCHAR verInfoBuffer[BUFFER_SIZE]; SQLSMALLINT verInfoLen; SQLLEN data_size = SQL_NTS; SQLSMALLINT position, jump; SQLLEN cbHrow = 0, cbHlist = 0, cbPosition = 0, cbJump = 0; SQLCHAR new_address[BUFFER_SIZE] = "295 Holly Street"; SQLLEN new_address_size = SQL_NTS; SQLCHAR new_date[BUFFER_SIZE] = "1995-11-26"; SQLLEN new_date_size = SQL_NTS; SQLCHAR* selectStmt = (SQLCHAR *) "SELECT address, contact_dates FROM customer WHERE cust_num = 109"; SQLCHAR* updateStmt = (SQLCHAR *) "UPDATE customer SET address = ?, contact_dates = ? WHERE cust_num = 109"; /* STEP 1. Get data source name from command line (or use default) ** Allocate environment handle and set ODBC version ** Allocate connection handle ** Establish the database connection ** Get version information from the database server ** -- if version < 9.x (not UDO enabled), exit with error message ** Allocate the statement handle */ /* If(dsn is not explicitly passed in as arg) */ if (argc != 2) { /* Use default dsn - odbc_demo */ fprintf (stdout, "\nUsing default DSN : %s\n", defDsn); strcpy ((char *)dsn, (char *)defDsn); } else { /* Use specified dsn */ strcpy ((char *)dsn, (char *)argv[1]); fprintf (stdout, "\nUsing specified DSN : %s\n", dsn); } /* Allocate the Environment handle */ rc = SQLAllocHandle (SQL_HANDLE_ENV, SQL_NULL_HANDLE, &henv); if (rc != SQL_SUCCESS) { fprintf (stdout, "Environment Handle Allocation failed\nExiting!!\n"); return (1); } /* Set the ODBC version to 3.0 */ rc = SQLSetEnvAttr (henv, SQL_ATTR_ODBC_VERSION, (SQLPOINTER) SQL_OV_ODBC3, 0); if (checkError (rc, SQL_HANDLE_ENV, henv, (SQLCHAR *) "Error in Step 1 -- SQLSetEnvAttr failed\nExiting!!\n")) return (1); /* Allocate the connection handle */ rc = SQLAllocHandle (SQL_HANDLE_DBC, henv, &hdbc); if (checkError (rc, SQL_HANDLE_ENV, henv, (SQLCHAR *) "Error in Step 1 -- Connection Handle Allocation failed\nExiting!!\n")) return (1); /* Establish the database connection */ rc = SQLConnect (hdbc, dsn, SQL_NTS, (SQLCHAR *) "", SQL_NTS, (SQLCHAR *) "", SQL_NTS); if (checkError (rc, SQL_HANDLE_DBC, hdbc, (SQLCHAR *) "Error in Step 1 -- SQLConnect failed\n")) return (1); /* Get version information from the database server If version < 9.x (not UDO enabled), exit with error message */ rc = SQLGetInfo (hdbc, SQL_DBMS_VER, verInfoBuffer, BUFFER_SIZE, &verInfoLen); if (checkError (rc, SQL_HANDLE_DBC, hdbc, (SQLCHAR *) "Error in Step 1 -- SQLGetInfo failed\n")) return 1; if ((strncmp ((char *) verInfoBuffer, "09", 2)) < 0) { fprintf (stdout, "\n** This test can only be run against UDO-enabled database server -- version 9 or higher **\n"); return 1; } /* Allocate the statement handle */ rc = SQLAllocHandle (SQL_HANDLE_STMT, hdbc, &hstmt ); if (checkError (rc, SQL_HANDLE_DBC, hdbc, (SQLCHAR *) "Error in Step 1 -- Statement Handle Allocation failed\nExiting!!\n")) return (1); fprintf (stdout, "STEP 1 done...connected to database\n"); /* STEP 2. Allocate an unfixed row handle ** Allocate an unfixed collection (list) handle ** Reset the statement parameters */ /* Allocate an unfixed row handle */ rc = SQLBindParameter (hstmt, 1, SQL_PARAM_OUTPUT, SQL_C_BINARY, SQL_INFX_RC_ROW, sizeof(HINFX_RC), 0, &hrow, sizeof(HINFX_RC), &cbHrow); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 2 -- SQLBindParameter (param 1) failed\n")) goto Exit; rc = SQLBindParameter (hstmt, 2, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_CHAR, 0, 0, (SQLCHAR *) "row", 0, &data_size); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 2 -- SQLBindParameter (param 2) failed\n")) goto Exit; rc = SQLExecDirect (hstmt, (SQLCHAR *) "{? = call ifx_rc_create(?)}", SQL_NTS); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 2 -- SQLExecDirect failed\n")) goto Exit; /* Reset the statement parameters */ rc = SQLFreeStmt (hstmt, SQL_RESET_PARAMS); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 2 -- SQLFreeStmt failed\n")) goto Exit; /* Allocate an unfixed list handle */ rc = SQLBindParameter (hstmt, 1, SQL_PARAM_OUTPUT, SQL_C_BINARY, SQL_INFX_RC_LIST, sizeof(HINFX_RC), 0, &hlist, sizeof(HINFX_RC), &cbHlist); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 2 -- SQLBindParameter (param 1) failed\n")) goto Exit; rc = SQLBindParameter (hstmt, 2, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_CHAR, 0, 0, (SQLCHAR *) "list", 0, &data_size); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 2 -- SQLBindParameter (param 2) failed\n")) goto Exit; rc = SQLExecDirect (hstmt, (SQLCHAR *) "{? = call ifx_rc_create(?)}", SQL_NTS); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 2 -- SQLExecDirect failed\n")) goto Exit; /* Reset the statement parameters */ rc = SQLFreeStmt (hstmt, SQL_RESET_PARAMS); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 2 -- SQLFreeStmt failed\n")) goto Exit; fprintf (stdout, "STEP 2 done...unfixed row and list handles allocated\n"); /* STEP 3. Bind the result set columns for the row and list handle ** Retrieve the row data from the database into the buffer allocated ** Reset the statement parameters */ /* Bind result set columns for the row and list handle */ rc = SQLBindCol (hstmt, 1, SQL_C_BINARY, hrow, sizeof(HINFX_RC), NULL); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 3 -- SQLBindCol failed\n")) goto Exit; rc = SQLBindCol (hstmt, 2, SQL_C_BINARY, hlist, sizeof(HINFX_RC), NULL); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 3 -- SQLBindCol failed\n")) goto Exit; /* Retrieve the row data from the database into the buffer allocated */ rc = SQLExecDirect (hstmt, selectStmt, SQL_NTS); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 3 -- SQLExecDirect failed\n")) goto Exit; rc = SQLFetch (hstmt); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 3 -- SQLFetch failed\n")) goto Exit; /* Close the result set cursor */ rc = SQLCloseCursor (hstmt); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 3 -- SQLCloseCursor failed\n")) goto Exit; fprintf (stdout, "STEP 3 done...data retrieved from database into row buffer\n"); /* STEP 4. Update the elements of the row buffer allocated ** -- the element of the row being updated is element ** no. 1 - 'address1' ** Reset the statement parameters */ position = SQL_INFX_RC_ABSOLUTE; jump = 1; rc = SQLBindParameter(hstmt, 1, SQL_PARAM_INPUT, SQL_C_BINARY, SQL_INFX_RC_ROW, sizeof(HINFX_RC), 0, hrow, sizeof(HINFX_RC), &cbHrow); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 4 -- SQLBindParameter failed (param 1)\n")) goto Exit; rc = SQLBindParameter(hstmt, 2, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_CHAR, BUFFER_SIZE, 0, new_address, 0, &new_address_size); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 4 -- SQLBindParameter failed (param 1)\n")) goto Exit; rc = SQLBindParameter(hstmt, 3, SQL_PARAM_INPUT, SQL_C_SHORT, SQL_SMALLINT, 0, 0, &position, 0, &cbPosition); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 4 -- SQLBindParameter failed (param 1)\n")) goto Exit; rc = SQLBindParameter(hstmt, 4, SQL_PARAM_INPUT, SQL_C_SHORT, SQL_SMALLINT, 0, 0, &jump, 0, &cbJump); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 4 -- SQLBindParameter failed (param 1)\n")) goto Exit; rc = SQLExecDirect(hstmt, (SQLCHAR *) "{call ifx_rc_update(?, ?, ?, ?)}", SQL_NTS); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 4 -- SQLExecDirect failed\n")) goto Exit; fprintf (stdout, "STEP 4 done...row element updated\n"); /* STEP 5. Insert a new element into the list buffer allocated ** Reset the statement parameters */ position = SQL_INFX_RC_LAST; jump = 0; rc = SQLBindParameter(hstmt, 1, SQL_PARAM_INPUT, SQL_C_BINARY, SQL_INFX_RC_LIST, sizeof(HINFX_RC), 0, hlist, sizeof(HINFX_RC), &cbHlist); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 5 -- SQLBindParameter failed (param 1)\n")) goto Exit; rc = SQLBindParameter(hstmt, 2, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_CHAR, BUFFER_SIZE, 0, new_date, 0, &new_date_size); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 5 -- SQLBindParameter failed (param 1)\n")) goto Exit; rc = SQLBindParameter(hstmt, 3, SQL_PARAM_INPUT, SQL_C_SHORT, SQL_SMALLINT, 0, 0, &position, 0, &cbPosition); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 5 -- SQLBindParameter failed (param 1)\n")) goto Exit; rc = SQLBindParameter(hstmt, 4, SQL_PARAM_INPUT, SQL_C_SHORT, SQL_SMALLINT, 0, 0, &jump, 0, &cbJump); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 5 -- SQLBindParameter failed (param 1)\n")) goto Exit; rc = SQLExecDirect(hstmt, (SQLCHAR *) "{call ifx_rc_insert(?, ?, ?, ?)}", SQL_NTS); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 5 -- SQLExecDirect failed\n")) goto Exit; fprintf (stdout, "STEP 5 done...list element updated\n"); /* STEP 6. Update the database with the new row data */ /* Update the database with the new row and list data */ rc = SQLBindParameter (hstmt, 1, SQL_PARAM_INPUT, SQL_C_BINARY, SQL_INFX_RC_ROW, sizeof(HINFX_RC), 0, hrow, sizeof(HINFX_RC), &cbHrow); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 6 -- SQLBindParameter failed\n")) goto Exit; rc = SQLBindParameter (hstmt, 2, SQL_PARAM_INPUT, SQL_C_BINARY, SQL_INFX_RC_LIST, sizeof(HINFX_RC), 0, hlist, sizeof(HINFX_RC), &cbHlist); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 6 -- SQLBindParameter failed\n")) goto Exit; rc = SQLExecDirect (hstmt, updateStmt, SQL_NTS); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 6 -- SQLExecDirect failed\n")) goto Exit; fprintf (stdout, "STEP 6 done...database row updated\n"); /* STEP 7. Free the row and list handles */ /* Free the row handle */ rc = SQLBindParameter(hstmt, 1, SQL_PARAM_INPUT, SQL_C_BINARY, SQL_INFX_RC_ROW, sizeof(HINFX_RC), 0, hrow, sizeof(HINFX_RC), &cbHrow); rc = SQLExecDirect(hstmt, (SQLCHAR *) "{call ifx_rc_free(?)}", SQL_NTS); /* Free the list handle */ rc = SQLBindParameter(hstmt, 1, SQL_PARAM_INPUT, SQL_C_BINARY, SQL_INFX_RC_LIST, sizeof(HINFX_RC), 0, hlist, sizeof(HINFX_RC), &cbHlist); rc = SQLExecDirect(hstmt, (SQLCHAR *) "{call ifx_rc_free(?)}", SQL_NTS); fprintf (stdout, "STEP 7 done...row and list handles freed\n"); Exit: /* CLEANUP: Close the statement handle ** Free the statement handle ** Disconnect from the datasource ** Free the connection and environment handles ** Exit */ /* Close the statement handle */ SQLFreeStmt (hstmt, SQL_CLOSE); /* Free the statement handle */ SQLFreeHandle (SQL_HANDLE_STMT, hstmt); /* Disconnect from the data source */ SQLDisconnect (hdbc); /* Free the environment handle and the database connection handle */ SQLFreeHandle (SQL_HANDLE_DBC, hdbc); SQLFreeHandle (SQL_HANDLE_ENV, henv); fprintf (stdout,"\n\nHit to terminate the program...\n\n"); in = getchar (); return (rc); }