Direction of movement on a path.
An Axis determines the direction of movement, when a step on
a path is taken, beginning at the context node. In the reverse direction, you
can address the following axis:
| AxisParent | parent::
|
| AxisAncestor | ancestor:: |
In the forward direction, you can address the following axes:
| AxisChild | child::
|
| AxisDescendant | descendant::
|
| AxisAttribute | attribute::
|
| AxisSelf | self::
|
| AxisDescendantOrSelf | descendant-or-self::
|
For all axes except the ancestor and descendant
axes there is an abbreviated syntax. See
AbbreviatedStep for
details.
Select all books published in the 21st century:
input()/descendant::book[attribute::year > 2000 ]
Starting from the document node, this query looks for any descendant
book elements. In the predicate expression the
attribute axis is searched for an attribute year
whose numerical value is larger than 2000.
The following construct(s) refer to this construct:
This construct is also related to the following construct(s):
AbbreviatedStep
|
NodeTest
|
StepExpr
|
StepQualifiers
|
