Use of TROOpenXMLDocument

Remoting SDK
1

Hi,

I need to read and write some general XML files and was thinking of using your TROOpenXMLDocument instead of the built-in TXMLDocument. Would you advise this or is there no real benefit over using the built-in functionality which leverages the MSXML parser?

One thing I noticed when using your classes was that, when writing out to a file, there are no line breaks between elements which can make the file hard to read in a standard text editor - is there any way of modifying this behaviour?

Similarly, when reading a file which does have such line breaks, these appear in the structure as additional nodes with names like ‘#text’. Is there any way of stripping these out automatically?

I appreciate that your implementation is primarily for the internal use of the RO framework when serialising information across the wire and I may be on totally the wrong track thinking of using it for my own XML files but I’d appreciate your opinion on the matter.

2

we are using OpenXML implementation for linux-based system, i.e. where MSXML implementation isn’t supported.
OpenXML has some limitations and you have caught some of them.

You can remove #text with something like:

procedure TDAWhereBuilder.RemoveEmptyNodes(const ANode: IXMLNode);
var
  i: integer;
  lNode: IXMLNode;
begin
  i:=0;
  while i < ANode.ChildrenCount do begin
    lNode := ANode.Children[i];
    if (lNode.Name = '#text') and (lNode.LocalName = '') and (lNode.Value = ' ')  then
      ANode.Delete(i)
    else begin
      RemoveEmptyNodes(lNode);
      inc(i);
    end;
  end;
end;