Adding a new row is very simple. Start the definition of the new dataset with the command hk_datasource::setmode_insertrow() and end it with the already well known method mydatasource->store_changed_data();. Between these two methods set the values for each column with the method hk_column::set_asstring(const string&). You have to create hk_column objects for every column (=field) you want to add data.
Example 6-1. Add a row
1 #include <hk_classes.h>
2 #include <iostream>
3 int main()
4 {
5 hk_drivermanager* mydrivermanager = new hk_drivermanager();
6 if (mydrivermanager==NULL) {cout <<"error creating mydrivermanager"<<endl;exit(1);}
7 hk_connection* myconnection = mydrivermanager->new_connection("mysql");
8 if (myconnection==NULL) {cout <<"error creating myconnection"<<endl;exit(1);}
9 myconnection->set_host("localhost");
10 myconnection->set_user("root");
11 myconnection->set_password("mypasswd");
12 myconnection->connect();
13
14 hk_database* mydatabase=myconnection->new_database("exampledb");
15 if (mydatabase==NULL) {cout <<"error creating mydatabase"<<endl;exit(1);}
16 hk_datasource* mydatasource= mydatabase->new_table("authors");
17 if (mydatasource==NULL) {cout <<"error creating mydatasource"<<endl;exit(1);}
18 mydatasource->enable();
19
20 hk_column* mycolumn = mydatasource->column_by_name("name");
21 if (mycolumn==NULL) {cout <<"error getting column"<<endl;exit(1);}
22 mydatasource->setmode_insertrow();
23 mycolumn->set_asstring("Fontane, Theodor");
24 mydatasource->store_changed_data();
25
26 delete mydrivermanager;
27 } |