org.jaxen.expr

Interface Step

All Superinterfaces:
Predicated, Serializable, Visitable
Known Subinterfaces:
AllNodeStep, CommentNodeStep, NameStep, ProcessingInstructionNodeStep, TextNodeStep
Known Implementing Classes:
DefaultAllNodeStep, DefaultCommentNodeStep, DefaultNameStep, DefaultProcessingInstructionNodeStep, DefaultStep, DefaultTextNodeStep

public interface Step
extends Predicated, Visitable

A Step represents a location step in a LocationPath. The node-set selected by the location step is the node-set that results from generating an initial node-set from the axis and node-test, and then filtering that node-set by each of the predicates in turn. The initial node-set consists of the nodes having the relationship to the context node specified by the axis, and having the node type and expanded-name specified by the node test.

Method Summary

Iterator
axisIterator(Object contextNode, ContextSupport support)
Get an Iterator for the current axis starting in the given contextNode.
List
evaluate(Context context)
For each node in the given context calls matches() for every node on the axis, then filters the result by each of the predicates.
int
getAxis()
Get an identifier for the current axis.
String
getText()
boolean
matches(Object node, ContextSupport contextSupport)
Performs the node-test part of evaluating the step for the given node (which must be on the axis).
void
simplify()

Methods inherited from interface org.jaxen.expr.Predicated

addPredicate, getPredicateSet, getPredicates

Methods inherited from interface org.jaxen.expr.Visitable

accept

Method Details

axisIterator

public Iterator axisIterator(Object contextNode,
                             ContextSupport support)
            throws UnsupportedAxisException
Get an Iterator for the current axis starting in the given contextNode.

evaluate

public List evaluate(Context context)
            throws JaxenException
For each node in the given context calls matches() for every node on the axis, then filters the result by each of the predicates.

getAxis

public int getAxis()
Get an identifier for the current axis.

getText

public String getText()

matches

public boolean matches(Object node,
                       ContextSupport contextSupport)
            throws JaxenException
Performs the node-test part of evaluating the step for the given node (which must be on the axis).

simplify

public void simplify()