Pascal (Lazarus/Delphi)

XML Sort Records by Content

See more XML Examples

Demonstrates the SortRecordsByContent method.

The input XML, available at http://www.chilkatsoft.com/data/fruitRecordsSort.xml, is this:

<root>
    <fruits>
        <fruit>
            <name>apple</name>
            <color>red</color>
        </fruit>
        <fruit>
            <name>banana</name>
            <color>yellow</color>
        </fruit>
        <fruit>
            <name>blackberry</name>
            <color>purple</color>
        </fruit>
        <fruit>
            <name>blueberry</name>
            <color>blue</color>
        </fruit>
        <fruit>
            <name>orange</name>
            <color>orange</color>
        </fruit>
        <fruit>
            <name>pear</name>
            <color>green</color>
        </fruit>
    </fruits>
</root>

Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.Xml;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  xml: TXml;
  xSortRoot: TXml;
  bAscending: Boolean;

begin
  success := False;

  xml := TXml.Create;

  //  The sample input XML is available at http://www.chilkatsoft.com/data/fruitRecordsSort.xml
  success := xml.LoadXmlFile('fruitRecordsSort.xml');
  if (success <> True) then
    begin
      WriteLn(xml.LastErrorText);
      Exit;
    end;

  //  The "fruit" records are direct children of the "fruits" node.
  //  Therefore, to sort the fruit records, the SortRecordsByContent
  //  method must be called from the "fruits" node.
  xSortRoot := xml.FindChild('fruits');

  //  Sort by the "name" field in ascending order.
  bAscending := True;
  xSortRoot.SortRecordsByContent('name',bAscending);

  //  Show the result:
  WriteLn(xml.GetXml());

  //  <root>
  //      <fruits>
  //          <fruit>
  //              <name>apple</name>
  //              <color>red</color>
  //          </fruit>
  //          <fruit>
  //              <name>banana</name>
  //              <color>yellow</color>
  //          </fruit>
  //          <fruit>
  //              <name>blackberry</name>
  //              <color>purple</color>
  //          </fruit>
  //          <fruit>
  //              <name>blueberry</name>
  //              <color>blue</color>
  //          </fruit>
  //          <fruit>
  //              <name>orange</name>
  //              <color>orange</color>
  //          </fruit>
  //          <fruit>
  //              <name>pear</name>
  //              <color>green</color>
  //          </fruit>
  //      </fruits>
  //  </root>

  xSortRoot.Free;


  xml.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.