root / pykota / trunk / docs / dumpykota.sgml @ 2250

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<chapter>
  <title>Export datas to other software with dumpykota</title>
  <para>Last modified on $Date$</para>
  
  <para>
    If you want to reuse <application>PyKota</application> datas from another
    software, but don't want to modify your existing application to
    have it connect to <application>PyKota</application>'s database, your
    best option is the new <command>dumpykota</command> command.
  </para>
  
  <para>
    <command>dumpykota</command> can export <application>PyKota</application>
    datas in a number of formats. The supported output formats are
    comma separated values, semicolon separated values, tab separated values, and <acronym>XML</acronym>.
  </para>  
  
  <para>
    For the print job history's datas, a special format identical to <application>CUPS</application>' <literal>page_log</literal>
    format is also supported.
    This allows you to interface <application>PyKota</application> with third party tools like
    <application>phpPrintAnalyzer</application> which is a logfile analyzer for <application>CUPS</application>,
    even in the case where you use <application>LPRng</application> instead of <application>CUPS</application>.
  </para>  
  
  <para>
    More formats may be added in the future. In particular, 
    <acronym>SQL</acronym> and <acronym>LDIF</acronym> are planned, but 
    are currently not implemented. 
  </para>
  
  <para>
    <command>dumpykota</command> can't dump all datas at once though, you have
    to specify which type of datas you want. The possible types are :
    <itemizedlist>
      <listitem><para>Users</para></listitem>
      <listitem><para>Users groups</para></listitem>
      <listitem><para>Printers</para></listitem>
      <listitem><para>Printers groups membership</para></listitem>
      <listitem><para>Users groups membership</para></listitem>
      <listitem><para>Users print quota entries</para></listitem>
      <listitem><para>Users groups print quota entries</para></listitem>
      <listitem><para>History of payments</para></listitem>
      <listitem><para>History of print jobs</para></listitem>
    </itemizedlist>  
  </para>
  
  <para>
    You can then import the dumped datas into a spreadsheet for example, 
    if you want to create complex reports with nice looking graphs and
    the like.
  </para>
  
  <para>
    An important feature of this command is the possibility to use
    a simple but powerful filtering mechanism to only export the datas
    you want. You can pass any number of filter expressions which will
    be ANDed together to select only certain records in the database.
    For example the filter expression <literal>username=jerome</literal>
    would only dump datas pertaining to user <literal>jerome</literal>.
  </para>
  
  <para>
    Several keys like <literal>username</literal> are possible, but some
    only apply to certain data types. Using a key which is not supported
    for a particular data type will return an empty result.
    <tip><title>Tip</title>
      <para>
        Please refer to dumpykota's help or manual page to obtain
        the complete list of supported keys.
      </para>
    </tip>  
  </para>
  
  <para>
    This command could also be used if you plan to write your own management
    tools : just write wrappers around the <command>pkprinters</command>,
    <command>edpykota</command>, and <command>dumpykota</command>
    tools, and your own tools will automatically benefit from <application>PyKota</application>
    database backend independance layer.
    This is exactly what the third party software <application>phpPykotaAdmin</application> does.
  </para>
  
  <para>
    Finally, <command>dumpykota</command>'s functionnality is now also available remotely through
    the use of the <filename>dumpykota.cgi</filename> <acronym>CGI</acronym> script.
  </para>
  
  <warning>
    <title>Warning</title>
    <para>
      Only <application>PyKota</application> administrators can dump PyKota's datas.
    </para>
  </warning>  
        
  <sect1>
    <title>Reference</title>
    <para>
      <cmdsynopsis>
        <command>dumpykota</command>
        <group choice="opt"><arg>-v</arg><arg>--version</arg></group>
        <group choice="opt"><arg>-h</arg><arg>--help</arg></group>
        <group choice="opt">
          <arg>-f <replaceable>outputformat</replaceable></arg>
          <arg>--format <replaceable>outputformat</replaceable></arg>
        </group>
        <group choice="opt">
          <arg>-o <replaceable>filename</replaceable></arg>
          <arg>--output <replaceable>filename</replaceable></arg>
        </group>
        <group choice="req">
          <arg>-d <replaceable>datatype</replaceable></arg>
          <arg>--data <replaceable>datatype</replaceable></arg>
        </group>
      </cmdsynopsis>
    </para>
  </sect1>
</chapter>