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POwriting a byte array to mysql using c connector?
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2011-10-19T10:43:23.660
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is there any smart way to write a byte array into varbinary or (other explain me) im looking to make funciton like that <pre><code> bool writeBinary(char * someQuery, LPBYTE buffer) { } </code></pre> when i using next function the data that happend in mysql not same to the buffer <pre><code>void CDBManager::SetBinary(const char * lpszStatement, LPBYTE lpBinaryBuffer, ULONG BinaryBufferSize) { MYSQL_STMT *stmt; MYSQL_BIND bind[1]; char * shhh = new char[BinaryBufferSize]; // ---- memcpy(shhh, lpBinaryBuffer, BinaryBufferSize); stmt = mysql_stmt_init(&getDB()->m_hMySQL); printf("\n"); if(BinaryBufferSize >= 2752) { for(int i = 0; i < BinaryBufferSize; i++) { if(lpBinaryBuffer[i] == 0xFF && lpBinaryBuffer[i+1] == 0xFF && lpBinaryBuffer[i+2] == 0xFF && lpBinaryBuffer[i+3] == 0xFF && lpBinaryBuffer[i+4] == 0xFF && lpBinaryBuffer[i+5] == 0xFF && lpBinaryBuffer[i+6] == 0xFF && lpBinaryBuffer[i+7] == 0xFF && lpBinaryBuffer[i+8] == 0xFF && lpBinaryBuffer[i+9] == 0xFF && lpBinaryBuffer[i+10] == 0xFF && lpBinaryBuffer[i+11] == 0xFF && lpBinaryBuffer[i+12] == 0xFF && lpBinaryBuffer[i+13] == 0xFF && lpBinaryBuffer[i+14] == 0xFF && lpBinaryBuffer[i+15] == 0xFF) { } else { printf("[%d] %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X\n", i, lpBinaryBuffer[i], lpBinaryBuffer[i+1], lpBinaryBuffer[i+2], lpBinaryBuffer[i+3], lpBinaryBuffer[i+4], lpBinaryBuffer[i+5], lpBinaryBuffer[i+6], lpBinaryBuffer[i+7], lpBinaryBuffer[i+8], lpBinaryBuffer[i+9], lpBinaryBuffer[i+10], lpBinaryBuffer[i+11], lpBinaryBuffer[i+12], lpBinaryBuffer[i+13], lpBinaryBuffer[i+14], lpBinaryBuffer[i+15]); } i+=15; } } printf("\n"); if(stmt == NULL) { fprintf(stderr, " mysql_stmt_init(), out of memory\n"); } else if(mysql_stmt_prepare(stmt, lpszStatement, strlen(lpszStatement))) { fprintf(stderr, " mysql_stmt_prepare(), INSERT failed\n"); fprintf(stderr, " %s\n", mysql_stmt_error(stmt)); } else { memset(bind, 0, sizeof(bind)); // ---- bind[0].buffer_type = MYSQL_TYPE_BLOB; bind[0].buffer = (char *)shhh; bind[0].buffer_length = BinaryBufferSize; bind[0].is_null = 0; bind[0].length = 0; // ---- // allways filed? what? this calls they are good, i made by example on mysql.com so what dont work // it always return len 0 => no data saved in db if(mysql_stmt_bind_param(stmt, bind)) { fprintf(stderr, " mysql_stmt_bind_param() failed\n"); fprintf(stderr, " %s\n", mysql_stmt_error(stmt)); } else if(mysql_stmt_execute(stmt)) { fprintf(stderr, " mysql_stmt_execute(), 1 failed\n"); fprintf(stderr, " %s\n", mysql_stmt_error(stmt)); } } // ---- delete shhh; </code></pre> } thanks
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