Sophie: libhk_classes5-devel-0.6.2a-3mdk i586

libhk_classes5-devel-0.6.2a-3mdk.i586.rpm

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<HTML
><HEAD
><TITLE
>Get in contact with a table</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK
REL="HOME"
TITLE="The hk_classes programmer's tutorial"
HREF="index.html"><LINK
REL="PREVIOUS"
TITLE="Get in contact with your SQL Server"
HREF="chapter1.html"><LINK
REL="NEXT"
TITLE="Preselect the driver and user information"
HREF="chapter3.html"><META
HTTP-EQUIV="Content-Style-Type"
CONTENT="text/css"><LINK
REL="stylesheet"
HREF="common/kde-common.css"
TYPE="text/css"><META
HTTP-EQUIV="Content-Type"
CONTENT="text/html; charset=iso-8859-1"><META
HTTP-EQUIV="Content-Language"
CONTENT="en"><LINK
REL="stylesheet"
HREF="common/kde-localised.css"
TYPE="text/css"
TITLE="KDE-English"><LINK
REL="stylesheet"
HREF="common/kde-default.css"
TYPE="text/css"
TITLE="KDE-Default"></HEAD
><BODY
CLASS="CHAPTER"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#AA0000"
VLINK="#AA0055"
ALINK="#AA0000"
STYLE="font-family: sans-serif;"
><DIV
CLASS="logoheader"
><A
HREF="http://www.kde.org/"
></A
></DIV
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>The hk_classes programmer's tutorial</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="chapter1.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
></TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="chapter3.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="CHAPTER"
><H1
><A
NAME="CHAPTER2"
></A
>Chapter 2. Get in contact with a table</H1
><P
>&#13;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&#38;)".</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-&#62;new_resultquery(); ).</P
><P
>  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
><P
>&#13;
<DIV
CLASS="EXAMPLE"
><HR><A
NAME="AEN42"
></A
><P
><B
>Example 2-1. Get in contact with a table</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>   1&nbsp;
   2&nbsp;  #include &#60;hk_classes.h&#62;
   3&nbsp;  #include &#60;iostream&#62;
   4&nbsp;  int main()
   5&nbsp;  {
   6&nbsp;  hk_drivermanager* mydrivermanager = new hk_drivermanager();
   7&nbsp;  if (mydrivermanager==NULL) {cout &#60;&#60;"error creating mydrivermanager"&#60;&#60;endl;exit(1);}
   8&nbsp;  hk_connection* myconnection = mydrivermanager-&#62;new_connection();
   9&nbsp;  if (myconnection==NULL) {cout &#60;&#60;"error creating myconnection"&#60;&#60;endl;exit(1);}
  10&nbsp;  myconnection-&#62;connect();
  11&nbsp;
  12&nbsp;  <FONT
COLOR="RED"
>hk_database* mydatabase=myconnection-&#62;new_database("exampledb");</FONT
>
  13&nbsp;  <FONT
COLOR="RED"
>if (mydatabase==NULL) {cout &#60;&#60;"error creating mydatabase"&#60;&#60;endl;exit(1);}</FONT
>
  14&nbsp;  <FONT
COLOR="RED"
>hk_datasource* mydatasource= mydatabase-&#62;new_table("authors");</FONT
>
  15&nbsp;  <FONT
COLOR="RED"
>if (mydatasource==NULL) {cout &#60;&#60;"error creating mydatasource"&#60;&#60;endl;exit(1);}</FONT
>
  16&nbsp;  <FONT
COLOR="RED"
>mydatasource-&#62;enable();</FONT
>
  17&nbsp;  <FONT
COLOR="RED"
>//the following internal debugging command should not be used. It is used here for</FONT
>
  18&nbsp;  <FONT
COLOR="RED"
>//demonstration purposes only!!!! </FONT
>
  19&nbsp;  <FONT
COLOR="RED"
>mydatasource-&#62;dump_data(); // DON'T USE THIS COMMAND IN YOUR PROGRAMMS!!!</FONT
>
  20&nbsp;
  21&nbsp;  delete mydrivermanager;
  22&nbsp;  }</PRE
></TD
></TR
></TABLE
><HR></DIV
></P
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="chapter1.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="index.html"
ACCESSKEY="H"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="chapter3.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>Get in contact with your SQL Server</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
>&nbsp;</TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>Preselect the driver and user information</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>