此代码示例 rccreate.c，在客户端创建一个行和列表，添加项，并将它们插入到数据库。
可以在 UNIX™ 的 %GBS_HOME%/demo/clidemo 目录和 Windows™
的%GBS_HOME%\demo\odbcdemo目录中找到 rccreate.c 文件。还可以找到有关如何在同
一位置创建 odbc_demo 数据库的说明。
/*
** rccreate.c
**
** To create a collection & insert it into the database table
**
**
** OBDC Functions:
** SQLBindParameter
** SQLConnect
** SQLDisconnect
** SQLExecDirect
*/
#include
#include
#include
#ifndef NO_WIN32
#include
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#include
#include
#endif /*NO_WIN32*/
#include "infxcli.h"
#define BUFFER_LEN 25
#define ERRMSG_LEN 200
UCHAR defDsn[] = "odbc_demo";
int checkError (SQLRETURNrc,
SQLSMALLINT handleType,
SQLHANDLE handle,
char *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++;
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}
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 */
SQLHDB hdbc;
SQLHENV henv;
SQLHSTMT hstmt;
HINFX_RC hrow;
HINFX_RC hlist;
/* Miscellaneous variables */
UCHAR dsn[20];/*name of the DSN used for connecting to the
database*/
SQLRETURN rc = 0;
int i, in;
int data_size = SQL_NTS;
short position = SQL_INFX_RC_ABSOLUTE;
short jump;
UCHAR row_data[4][BUFFER_LEN] = {"520 Topaz Way", "Redwood City",
"CA", "94062"};
int row_data_size = SQL_NTS;
UCHAR list_data[2][BUFFER_LEN] = {"1991-06-20", "1993-07-17"};
int list_data_size = SQL_NTS;
char* insertStmt = "INSERT INTO customer VALUES (110, 'Roy',
'Jaeger', ?, ?)";
SQLINTEGER cbHrow = 0, cbHlist = 0, cbPosition = 0, cbJump = 0;
/* STEP 1. Get data source name from command line (or use default).
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** Allocate environment handle and set ODBC version.
** Allocate connection handle.
** Establish the database connection.
** 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!!");
return (1);
}
/* Set the ODBC version to 3.5 */
rc = SQLSetEnvAttr (henv, SQL_ATTR_ODBC_VERSION,
(SQLPOINTER)SQL_OV_ODBC3, 0);
if (checkError (rc, SQL_HANDLE_ENV, henv, "Error in Step 1 --
SQLSetEnvAttr failed\nExiting!!"))
return (1);
/* Allocate the connection handle */
rc = SQLAllocHandle (SQL_HANDLE_DBC, henv, &hdbc);
if (checkError (rc, SQL_HANDLE_ENV, henv, "Error in Step 1 -- Connection
Handle Allocation failed\nExiting!!"))
return (1);
/* Establish the database connection */
rc = SQLConnect (hdbc, dsn, SQL_NTS, "", SQL_NTS, "", SQL_NTS);
if (checkError (rc, SQL_HANDLE_DBC, hdbc, "Error in Step 1 -- SQLConnect
GBase 8s ODBC Driver 程序员指南
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failed\n"))
return (1);
/* Allocate the statement handle */
rc = SQLAllocHandle (SQL_HANDLE_STMT, hdbc, &hstmt );
if (checkError (rc, SQL_HANDLE_DBC, hdbc, "Error in Step 1 -- Statement
Handle Allocation failed\nExiting!!"))
return (1);
fprintf (stdout, "STEP 1 done...connected to database\n");
/* STEP 2. Allocate fixed-type row handle -- this creates a non-null row
** buffer, each of whose values is null, and can be updated.
** Allocate a fixed-type list handle -- this creates a non-null
** but empty list buffer into which values can be inserted.
** Reset the statement parameters.
*/
/* Allocate a fixed-type row handle -- this creates a row with each
value empty */
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, "Error in Step 2 --
SQLBindParameter (param 1) failed for row handle\n")) goto Exit;
rc = SQLBindParameter (hstmt, 2, SQL_PARAM_INPUT, SQL_C_CHAR,
SQL_CHAR,
0, 0, (UCHAR *) "ROW(address1 VARCHAR(25), city VARCHAR(15), state
VARCHAR(15), zip VARCHAR(5))", 0, &data_size);
if (checkError (rc, SQL_HANDLE_STMT, hstmt, "Error in Step 2 --
SQLBindParameter (param 2) failed for row handle\n"))
goto Exit;
rc = SQLExecDirect (hstmt, (UCHAR *) "{? = call ifx_rc_create(?)}",
SQL_NTS);
if (checkError (rc, SQL_HANDLE_STMT, hstmt, "Error in Step 2 --
SQLExecDirect failed for row handle\n"))
goto Exit;
/* Allocate a fixed-type list handle */
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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, "Error in Step 2 --
SQLBindParameter (param 1) failed for list handle\n"))
goto Exit;
data_size = SQL_NTS;
rc = SQLBindParameter (hstmt, 2, SQL_PARAM_INPUT, SQL_C_CHAR,
SQL_CHAR,
0, 0, (UCHAR *) "LIST (DATETIME YEAR TO DAY NOT NULL)",0,
&data_size);
if (checkError (rc, SQL_HANDLE_STMT, hstmt, "Error in Step 2 --
SQLBindParameter (param 2) failed for list handle\n"))
goto Exit;
rc = SQLExecDirect (hstmt, (UCHAR *) "{? = call ifx_rc_create(?)}",
SQL_NTS);
if (checkError (rc, SQL_HANDLE_STMT, hstmt, "Error in Step 2 --
SQLExecDirect failed for list handle\n"))
goto Exit;
/* Reset the statement parameters */
rc = SQLFreeStmt (hstmt, SQL_RESET_PARAMS);
if (checkError (rc, SQL_HANDLE_STMT, hstmt, "Error in Step 2 --
SQLFreeStmt failed\n"))
goto Exit;
fprintf (stdout, "STEP 2 done...fixed-type row and collection handles
allocated\n");
/* STEP 3. Update the elements of the fixed-type row buffer allocated.
** Insert elements into the fixed-type list buffer allocated.
** Reset the statement parameters.
*/
/* Update elements of the row buffer */
for (i=0; i<4; i++)
{
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, "Error in Step 3 --
GBase 8s ODBC Driver 程序员指南
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SQLBindParameter (param 1) failed for row handle\n"))
goto Exit;
rc = SQLBindParameter (hstmt, 2, SQL_PARAM_INPUT, SQL_C_CHAR,
SQL_CHAR, BUFFER_LEN, 0, row_data[i], 0, &row_data_size);
if (checkError (rc, SQL_HANDLE_STMT, hstmt, "Error in Step 3 --
SQLBindParameter (param 2) failed for row handle\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, "Error in Step 3 --
SQLBindParameter (param 3) failed for row handle\n"))
goto Exit; jump = i + 1;
rc = SQLBindParameter (hstmt, 4, SQL_PARAM_INPUT, SQL_C_SHORT,
SQL_SMALLINT, 0, 0, &jump, 0, &cbJump);
if (checkError (rc, SQL_HANDLE_STMT, hstmt, "Error in Step 3 --
SQLBindParameter (param 4) failed for row handle\n"))
goto Exit;
rc = SQLExecDirect (hstmt,
(UCHAR *)"{call ifx_rc_update(?, ?, ?, ?)}", SQL_NTS);
if (checkError (rc, SQL_HANDLE_STMT, hstmt, "Error in Step 3 --
SQLExecDirect failed for row handle\n"))
goto Exit;
}
/* Insert elements into the list buffer */
for (i=0; i<2; i++)
{
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, "Error in Step 3 --
SQLBindParameter (param 1) failed for list handle\n"))
goto Exit;
rc = SQLBindParameter (hstmt, 2, SQL_PARAM_INPUT, SQL_C_CHAR,
SQL_DATE, 25, 0, list_data[i], 0, &list_data_size);
if (checkError (rc, SQL_HANDLE_STMT, hstmt, "Error in Step 3 --
SQLBindParameter (param 2) failed for list handle\n"))
goto Exit;
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rc = SQLBindParameter (hstmt, 3, SQL_PARAM_INPUT, SQL_C_SHORT,
SQL_SMALLINT, 0, 0, &position, 0, &cbPosition);
if (checkError (rc, SQL_HANDLE_STMT, hstmt, "Error in Step 3 --
SQLBindParameter (param 3) failed for list handle\n"))
goto Exit;
jump = i + 1;
rc = SQLBindParameter (hstmt, 4, SQL_PARAM_INPUT, SQL_C_SHORT,
SQL_SMALLINT, 0, 0, &jump, 0, &cbJump);
if (checkError (rc, SQL_HANDLE_STMT, hstmt, "Error in Step 3 --
SQLBindParameter (param 4) failed for list handle\n"))
goto Exit;
rc = SQLExecDirect (hstmt,
(UCHAR *)"{call ifx_rc_insert( ?, ?, ?, ? )}", SQL_NTS);
if (checkError (rc, SQL_HANDLE_STMT, hstmt, "Error in Step 3 --
SQLExecDirect failed for list handle\n"))
goto Exit;
}
/* Reset the statement parameters */
rc = SQLFreeStmt (hstmt, SQL_RESET_PARAMS);
if (checkError (rc, SQL_HANDLE_STMT, hstmt, "Error in Step 3 --
SQLFreeStmt failed\n"))
goto Exit;
fprintf (stdout, "STEP 3 done...row and list buffers populated\n");
/* STEP 4. Bind parameters for the row and list handles.
** Execute the insert statement to insert the new row into table
** 'customer'.
*/
rc = SQLBindParameter (hstmt, 1, SQL_PARAM_INPUT, SQL_C_BINARY,
SQL_INFX_RC_COLLECTION, sizeof(HINFX_RC), 0, hrow,
sizeof(HINFX_RC), &cbHrow);
if (checkError (rc, SQL_HANDLE_STMT, hstmt, "Error in Step 4 --
SQLBindParameter failed (param 1)\n"))
goto Exit;
rc = SQLBindParameter (hstmt, 2, SQL_PARAM_INPUT, SQL_C_BINARY,
SQL_INFX_RC_COLLECTION, sizeof(HINFX_RC), 0, hlist,
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sizeof(HINFX_RC), &cbHlist);
if (checkError (rc, SQL_HANDLE_STMT, hstmt, "Error in Step 4 --
SQLBindParameter failed (param 2)\n"))
goto Exit;
rc = SQLExecDirect (hstmt, (UCHAR *)insertStmt, SQL_NTS);
if (checkError (rc, SQL_HANDLE_STMT, hstmt, "Error in Step 4 --
SQLExecDirect failed\n"))
goto Exit;
fprintf (stdout, "STEP 4 done...new row inserted into table
'customer'\n");
/* STEP 5. 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, (UCHAR *)"{call ifx_rc_free(?)}", SQL_NTS);
/* Free the list handle */
rc = SQLBindParameter (hstmt, 2, SQL_PARAM_INPUT, SQL_C_BINARY,
SQL_INFX_RC_LIST, sizeof(HINFX_RC), 0, hlist, sizeof(HINFX_RC),
&cbHlist);
rc = SQLExecDirect(hstmt, (UCHAR *)"{call ifx_rc_free(?)}", SQL_NTS);
fprintf (stdout, "STEP 5 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 */
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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
in = getchar ();
return (rc);