Select nodes on an absolute location path.
An AbsoluteLocationPath selects nodes on the absolute
location path starting at the document root. It consists of
"/" optionally followed by a relative location path.
The operator "/" by itself selects the root node of
the document. If it is followed by a relative location path, then the location
path selects the set of nodes that would be selected by the relative location
path relative to the root node of the document. Alternatively you can use an
abbreviated absolute location path.
It corresponds to the expression AbsoluteLocationPath
defined in XPath,
Section 2,
Rule 2.
Select all patients (the child element node of the root node, which is also the doctype element):
/patient
Select all types of medication used (all type nodes that
are descendants of a therapy node of the context node
patient):
/patient/therapy//type
Select all patients whose names start with
"B" (all patient nodes that satisfy the
following predicate expression: surname child nodes of the
name nodes that contain words beginning with
"B" or "b"):
/patient[./name/surname ~= 'B*']
RelativeLocationPath |