Pascal (Lazarus/Delphi)

Demonstrate the XML FindNextRecord Method

See more XML Examples

Imagine we have an XML file as follows:

<CompleteMultipartUpload>
  <Part>
    <PartNumber>1</PartNumber>
    <ETag>abc</ETag>
  </Part>
  <Part>
    <PartNumber>2</PartNumber>
    <ETag>def</ETag>
  </Part>
  <Part>
    <PartNumber>3</PartNumber>
    <ETag>ghi</ETag>
  </Part>
</CompleteMultipartUpload>

We want to find the record where PartNumber = 2. To do so, we simply position ourselves at the first "Part" tag, and then call FindNextRecord. (See below..) 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
  xml: TXml;
  foundRec: TXml;

begin
  xml := TXml.Create;

  xml.LoadXmlFile('qa_data/xml/multipartUpload.xml');

  //  Position ourselves at the 1st record.
  xml.GetChild2(0);

  foundRec := xml.FindNextRecord('PartNumber','2');
  if (xml.LastMethodSuccess = True) then
    begin
      WriteLn('Found the record where PartNumber = 2.');
      WriteLn(foundRec.GetXml());

      //  Let's examine the ETag for this record...
      WriteLn('ETag for PartNumber 2 = ' + foundRec.GetChildContent('ETag'));
      foundRec.Free;
    end
  else
    begin
      WriteLn('No record exists where PartNumber = 2.');
    end;

  //  What if we want to find the record where ETag = "abc"?
  foundRec := xml.FindNextRecord('ETag','abc');
  if (xml.LastMethodSuccess = True) then
    begin
      WriteLn('Found the record where ETag = abc');
      WriteLn(foundRec.GetXml());

      //  Let's examine the PartNumber for this record...
      WriteLn('Part number for Etag(abc) = ' + foundRec.GetChildContent('PartNumber'));
      foundRec.Free;
    end
  else
    begin
      WriteLn('No record exists where ETag = abc.');
    end;

  //  Go back to the XML root..
  xml.GetRoot2();


  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.