You can restructure an XML node tree by rearranging its nodes. One means of manipulating nodes involves detaching a child node from its parent node. This can be accomplished with the Detach method, as in the following example.
The root element of a PBDOM_DOCUMENT object named pbdom_doc is obtained using the GetRootElement method:
pbdom_obj = pbdom_doc.GetRootElement()
The root element is detached from the PBDOM_DOCUMENT object, which is the parent node of the root element:
pbdom_obj.Detach()
PBDOM provides the SetParentObject method to make an object a child of another object.
The GetParentObject method can be used to determine whether an element has a parent object, as in the following example:
pbdom_parent_obj = pbdom_obj.GetParentObject()
if not IsValid(pbdom_parent_obj) then
MessageBox ("Invalid", "Root Element has no Parent")
end if
If the object on which GetParentObject is called has no parent object, the function returns NULL.
PBDOM provides similar methods that return information about an element’s place in an XML node tree. These methods include HasChildren, which returns a boolean indicating whether an object has child objects, and IsAncestorObjectOf, which indicates whether an object is the ancestor of another object.
