pt:fetch

The fetch property signals whether an element (or its attribute descendants, if the element is a class) should have its value (here: the XML element's text and XML attributes) populated by the corresponding source element. Given that the fetch property is inheritable, declaring it on a class conveys the intent that its entire subtree should be fetched, except where a descendant element declares otherwise.

The definition of "corresponding source element" in the context of fetch is the element within the active source label whose path matches that of the given element in the template. Specifically, the path used follows the ElementPath standard, which ensures that the fully qualified tags of the element and its ancestors are taken into account rather than just their document order positions (commonly seen in XPath derived paths).

It is not currently possible for fetch to target a specific instance of a plural element; the n-th instance of a template element will match the n-th instance of the corresponding source element. However, it is possible to duplicate a singular template element's subtree for each matched source instance, using the multi property.