home *** CD-ROM | disk | FTP | other *** search
- // BDE - (C) Copyright 1995 by Borland International
-
- // search.c
- #include "snipit.h"
-
- static const char szTblName[] = "customer";
- static const char szTblType[] = szPARADOX;
-
- //========================================================================
- // Function:
- // SearchTable();
- //
- // Description:
- // This sample code will open a customer table and search it
- // for a key value.
- //========================================================================
- void
- TableSearch (void)
- {
- DBIResult rslt; // Value returned from IDAPI
- // functions
- hDBIDb hDb; // Handle to the database
- hDBICur hCur; // Handle to the table
- CURProps TblProps; // Table properties
- pBYTE pBuf = NULL; // Pointer to the record buffer
- FLOAT fCustNum = 3052.00; // FLOAT value to seach for
- CHAR szKey[] = "Sarasota"; // CHAR value to search for
-
- Screen("*** Locating A Key Value In A Table ***\r\n");
-
- BREAK_IN_DEBUGGER();
-
- Screen(" Initializing IDAPI...");
- if (InitAndConnect(&hDb) != DBIERR_NONE)
- {
- Screen("\r\n*** End of Example ***");
- return;
- }
-
- Screen(" Setting the database directory...");
- rslt = DbiSetDirectory(hDb, (pCHAR) szTblDirectory);
- ChkRslt(rslt, "SetDirectorry");
-
- Screen(" Opening the Customer table...");
- rslt = DbiOpenTable(hDb, (pCHAR) szTblName, (pCHAR) szTblType,
- NULL, NULL, NULL, dbiREADWRITE, dbiOPENSHARED,
- xltFIELD, FALSE, NULL, &hCur);
- if (ChkRslt(rslt, "OpenTable") != DBIERR_NONE)
- {
- CloseDbAndExit(&hDb);
- Screen("\r\n*** End of Example ***");
- return;
- }
-
- // Allocate a record buffer.
- rslt = DbiGetCursorProps(hCur,&TblProps);
- ChkRslt(rslt, "GetCursorProps");
-
- pBuf = (pBYTE) malloc(TblProps.iRecBufSize);
- if (pBuf == NULL)
- {
- Screen(" Error - Out of memory");
- CloseDbAndExit(&hDb);
- Screen("\r\n*** End of Example ***");
- return;
- }
-
- rslt = DbiPutField(hCur, 1, pBuf, (pBYTE) &fCustNum);
- ChkRslt(rslt, "PutField");
-
- // Example 1: Search for full key value using a record buffer.
- Screen(" Searching for the record where the 'Customer Number' field"
- " = %f...", fCustNum);
- rslt = DbiSetToKey(hCur, keySEARCHEQ, FALSE, 0, 0, pBuf);
- if (rslt == DBIERR_NONE)
- {
- // Cursor is left on the crack before the record.
- Screen("\r\n Record was found:");
- DisplayNextRecord(hCur);
- }
- else
- {
- Screen("\r\n Record was not found...");
- ChkRslt(rslt, "SetToKey");
- }
-
- // Example 2: Search on a partial key value using a direct buffer.
- Screen("\r\n Switching to the \"Place\" index...");
-
- rslt = DbiSwitchToIndex(&hCur, "Place", NULL, NULL, FALSE);
- ChkRslt(rslt, "SwitchToIndex");
-
- Screen(" Searching for the record using the \"Place\" index"
- " where\r\n the 'City' field = %s...",szKey);
- rslt = DbiGetRecordForKey(hCur, TRUE, 0, strlen(szKey),
- (pBYTE) szKey, NULL);
- if (rslt == DBIERR_NONE)
- {
- // Cursor is left on the record.
- Screen("\r\n Record was found:");
- DisplayCurrentRecord(hCur);
- }
- else
- {
- Screen("\r\n Record was not found... ");
- ChkRslt(rslt, "GetRecordForKey");
- }
-
- Screen("\r\n Close the table...");
- rslt = DbiCloseCursor(&hCur);
- ChkRslt(rslt, "CloseCursor");
-
- free(pBuf);
-
- Screen(" Close the database and exit IDAPI...");
- CloseDbAndExit(&hDb);
-
- Screen("\r\n*** End of Example ***");
- }
-
-
-