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>Chapter 2. Get in contact with a table</H1
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> Below you see the program of chapter 1 with some additional commands. A hk_database object represents a database,
the name of the database can be set either with the constructor or with "set_name(const string&)".</P
><P
> A table or a query is be represented by a hk_datasource object (a query with a "SELECT statement is called in
hk_classes a resultquery and can be created with hk_datasource*
mydatasource=mydatabase->new_resultquery(); ).</P
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> Before you can see the data of a datasource you have to enable it (then the SQL-statement will be executed). The last
command ("dump_data()") is just added so that you can see the data, please don't use it in your code.</P
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>Example 2-1. Get in contact with a table</B
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> 1
2 #include <hk_classes.h>
3 #include <iostream>
4 int main()
5 {
6 hk_drivermanager* mydrivermanager = new hk_drivermanager();
7 if (mydrivermanager==NULL) {cout <<"error creating mydrivermanager"<<endl;exit(1);}
8 hk_connection* myconnection = mydrivermanager->new_connection();
9 if (myconnection==NULL) {cout <<"error creating myconnection"<<endl;exit(1);}
10 myconnection->connect();
11
12 <FONT
COLOR="RED"
>hk_database* mydatabase=myconnection->new_database("exampledb");</FONT
>
13 <FONT
COLOR="RED"
>if (mydatabase==NULL) {cout <<"error creating mydatabase"<<endl;exit(1);}</FONT
>
14 <FONT
COLOR="RED"
>hk_datasource* mydatasource= mydatabase->new_table("authors");</FONT
>
15 <FONT
COLOR="RED"
>if (mydatasource==NULL) {cout <<"error creating mydatasource"<<endl;exit(1);}</FONT
>
16 <FONT
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>mydatasource->enable();</FONT
>
17 <FONT
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>//the following internal debugging command should not be used. It is used here for</FONT
>
18 <FONT
COLOR="RED"
>//demonstration purposes only!!!! </FONT
>
19 <FONT
COLOR="RED"
>mydatasource->dump_data(); // DON'T USE THIS COMMAND IN YOUR PROGRAMMS!!!</FONT
>
20
21 delete mydrivermanager;
22 }</PRE
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