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Delphi DLL Examples

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(Delphi DLL) Demonstrate the XML FindNextRecord Method

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..)

Chilkat for Delphi Downloads

Chilkat non-ActiveX DLL for Delphi

Chilkat ActiveX DLL for Delphi

* The examples here use the non-ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Xml;

...

procedure TForm1.Button1Click(Sender: TObject);
var
xml: HCkXml;
foundRec: HCkXml;

begin
xml := CkXml_Create();

CkXml_LoadXmlFile(xml,'qa_data/xml/multipartUpload.xml');

//  Position ourselves at the 1st record.
CkXml_GetChild2(xml,0);

foundRec := CkXml_FindNextRecord(xml,'PartNumber','2');
if (CkXml_getLastMethodSuccess(xml) = True) then
  begin
    Memo1.Lines.Add('Found the record where PartNumber = 2.');
    Memo1.Lines.Add(CkXml__getXml(foundRec));

    //  Let's examine the ETag for this record...
    Memo1.Lines.Add('ETag for PartNumber 2 = ' + CkXml__getChildContent(foundRec,'ETag'));
    CkXml_Dispose(foundRec);
  end
else
  begin
    Memo1.Lines.Add('No record exists where PartNumber = 2.');
  end;

//  What if we want to find the record where ETag = "abc"?
foundRec := CkXml_FindNextRecord(xml,'ETag','abc');
if (CkXml_getLastMethodSuccess(xml) = True) then
  begin
    Memo1.Lines.Add('Found the record where ETag = abc');
    Memo1.Lines.Add(CkXml__getXml(foundRec));

    //  Let's examine the PartNumber for this record...
    Memo1.Lines.Add('Part number for Etag(abc) = ' + CkXml__getChildContent(foundRec,'PartNumber'));
    CkXml_Dispose(foundRec);
  end
else
  begin
    Memo1.Lines.Add('No record exists where ETag = abc.');
  end;

//  Go back to the XML root..
CkXml_GetRoot2(xml);

CkXml_Dispose(xml);

end;

 

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