Solved

Parsing this simple XML

Posted on 2008-06-23
1
262 Views
Last Modified: 2010-04-05
Hi,

I have "TMemo" that has XML content like this (see in the code snippet).

How do I parse that XML and display:

- CaseID value
- CaseTitle value

And also display all the "ActivityDate" and "ActivityDetails" from all the <CaseActivity> nodes?

Thanks.


<?xml version="1.0" encoding="utf-8" ?>

<CaseDetailResult xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://tempuri.org/">

<CaseId>1234567890</CaseId>

<CaseTitle>Testing</CaseTitle>

<CaseStatus>Closed</CaseStatus>

<SerialNumber />

<Activities>

<CaseActivity>

<Activity>Create</Activity>

<ActivityDate>01-01-2008</ActivityDate>

<ActivityDetails>Created by John</ActivityDetails>

</CaseActivity>

<CaseActivity>

<Activity>Status Change</Activity>

<ActivityDate>01-02-2008</ActivityDate>

<ActivityDetails>Case Opened</ActivityDetails>

</CaseActivity>

<CaseActivity>

<Activity>Status Change</Activity>

<ActivityDate>01-03-2008</ActivityDate>

<ActivityDetails>Case Complete</ActivityDetails>

</CaseActivity>

</Activities>

</CaseDetailResult>

Open in new window

0
Comment
Question by:dudup
1 Comment
 
LVL 17

Accepted Solution

by:
TheRealLoki earned 250 total points
ID: 21851939
here's a quick demo I just wrote up for you using your sample file
I saved your file as "file3.xml" for this demo
unit Unit3;
 

interface
 

uses

  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,

  StdCtrls,

  MSXML_TLB, comobj, ActiveX;
 

type

  TForm3 = class(TForm)

    Button1: TButton;

    Memo1: TMemo;

    procedure Button1Click(Sender: TObject);

  private

    { Private declarations }

    FDocument : IXMLDOMDocument;

    procedure ParseCaseXML;

  public

    { Public declarations }

  end;
 

var

  Form3: TForm3;
 

implementation
 

{$R *.DFM}
 

procedure TForm3.Button1Click(Sender: TObject);

var

  i: integer;

begin

  FDocument := nil;

  OleCheck(CoCreateInstance(Class_DOMDocument, nil, CLSCTX_ALL,IXMLDOMDocument, FDocument));

  if FDocument <> nil then

  begin

    try

      if not FDocument.load('file3.xml') then

        ShowMessage('Error loading DOMDocument');

      ParseCaseXML;

    finally

      FDocument := nil;

    end;

  end

  else

    ShowMessage('Failed to create XML object');

end;
 

procedure TForm3.ParseCaseXML;

var

 rootnode_, CaseDetailResultNode_, ActivitiesNode_  : IXMLDOMNode;

 tempnode_: IXMLDOMNode;

 lstNodes : IXMLDOMNodeList; // list of activities

 ActivityNode_: IXMLDOMElement;

 activityindex: integer;

begin

  rootnode_ := FDocument.firstChild;

  if rootnode_ = nil then exit;

  CaseDetailResultNode_ := rootnode_.selectSingleNode('//CaseDetailResult');

  if assigned(CaseDetailResultNode_) then

  begin

    tempnode_ := CaseDetailResultNode_.selectSingleNode('CaseId');

    memo1.Lines.add(Format('%s : %s', [tempnode_.nodeName, tempnode_.text] ));

    tempnode_ := CaseDetailResultNode_.selectSingleNode('CaseTitle');

    memo1.Lines.add(Format('%s : %s', [tempnode_.nodeName, tempnode_.text] ));
 

    activityindex := 0; // just a simple visual reference

    ActivitiesNode_ := CaseDetailResultNode_.selectSingleNode('Activities');

    if assigned(ActivitiesNode_) then

    begin

      lstNodes := ActivitiesNode_.selectNodes('CaseActivity');

      if assigned(lstNodes) then

      begin

        ActivityNode_ := lstNodes.nextNode as IXMLDOMElement;

        while assigned(ActivityNode_) do

        begin

          inc(activityindex);

          memo1.lines.add(Format('Activity #%d', [activityindex]));
 

          tempnode_ := ActivityNode_.selectSingleNode('Activity');

          memo1.Lines.add(Format('     %s : %s', [tempnode_.nodeName, tempnode_.text] ));

          tempnode_ := ActivityNode_.selectSingleNode('ActivityDate');

          memo1.Lines.add(Format('     %s : %s', [tempnode_.nodeName, tempnode_.text] ));

          tempnode_ := ActivityNode_.selectSingleNode('ActivityDetails');

          memo1.Lines.add(Format('     %s : %s', [tempnode_.nodeName, tempnode_.text] ));
 

          memo1.lines.add('----------');

          ActivityNode_ := lstNodes.nextNode as IXMLDOMElement;

        end;

      end;

    end;

  end;

end;
 

end.
 
 

**** Form follows ****
 

object Form3: TForm3

  Left = 249

  Top = 107

  Width = 503

  Height = 427

  Caption = 'Form3'

  Color = clBtnFace

  Font.Charset = DEFAULT_CHARSET

  Font.Color = clWindowText

  Font.Height = -11

  Font.Name = 'MS Sans Serif'

  Font.Style = []

  OldCreateOrder = False

  PixelsPerInch = 96

  TextHeight = 13

  object Button1: TButton

    Left = 24

    Top = 8

    Width = 75

    Height = 25

    Caption = 'Button1'

    TabOrder = 0

    OnClick = Button1Click

  end

  object Memo1: TMemo

    Left = 24

    Top = 52

    Width = 329

    Height = 301

    TabOrder = 1

  end

end

Open in new window

0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

This article explains how to create forms/units independent of other forms/units object names in a delphi project. Have you ever created a form for user input in a Delphi project and then had the need to have that same form in a other Delphi proj…
Objective: - This article will help user in how to convert their numeric value become words. How to use 1. You can copy this code in your Unit as function 2. than you can perform your function by type this code The Code   (CODE) The Im…
Here's a very brief overview of the methods PRTG Network Monitor (https://www.paessler.com/prtg) offers for monitoring bandwidth, to help you decide which methods you´d like to investigate in more detail.  The methods are covered in more detail in o…
This video demonstrates how to create an example email signature rule for a department in a company using CodeTwo Exchange Rules. The signature will be inserted beneath users' latest emails in conversations and will be displayed in users' Sent Items…

932 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

13 Experts available now in Live!

Get 1:1 Help Now