Class DefaultStep

java.lang.Object

org.jaxen.expr.DefaultStep

All Implemented Interfaces:

Serializable, Predicated, Step

Direct Known Subclasses:

DefaultAllNodeStep, DefaultCommentNodeStep, DefaultNameStep, DefaultProcessingInstructionNodeStep, DefaultTextNodeStep

public abstract class DefaultStep
extends Object
implements Step

See Also:

• Serialized Form

Method Summary

Modifier and Type	Method	Description
void	addPredicate(Predicate predicate)	Add an additional predicate to this object.
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	getAxisName()
IterableAxis	getIterableAxis()
List	getPredicates()	Returns a possibly empty list of predicates.
PredicateSet	getPredicateSet()	Returns a possibly empty set of predicates.
String	getText()	Returns a String containing the XPath expression.
void	simplify()	Simplifies the XPath step.
String	toString()

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface Step

matches

Method Details

addPredicate

public void addPredicate(Predicate predicate)

Description copied from interface: Predicated

Add an additional predicate to this object.

Specified by:

addPredicate in interface Predicated

Parameters:

predicate - the predicate to add

getPredicates

public List getPredicates()

Description copied from interface: Predicated

Returns a possibly empty list of predicates.

Specified by:

getPredicates in interface Predicated

Returns:

the list of predicates

getPredicateSet

public PredicateSet getPredicateSet()

Description copied from interface: Predicated

Returns a possibly empty set of predicates.

Specified by:

getPredicateSet in interface Predicated

Returns:

the set of predicates

getAxis

public int getAxis()

Description copied from interface: Step

Get an identifier for the current axis.

Specified by:

getAxis in interface Step

Returns:

the axis identifier

See Also:

• Axis

getIterableAxis

public IterableAxis getIterableAxis()

getAxisName

public String getAxisName()

getText

public String getText()

Description copied from interface: Step

Returns a String containing the XPath expression.

Specified by:

getText in interface Step

Returns:

the text form of this step

toString

public String toString()

Overrides:

toString in class Object

simplify

public void simplify()

Description copied from interface: Step

Simplifies the XPath step. In practice, this is usually a noop. Jaxen does not currently perform any simplification.

Specified by:

simplify in interface Step

axisIterator

public Iterator axisIterator(Object contextNode,
 ContextSupport support)
                      throws UnsupportedAxisException

Description copied from interface: Step

Get an Iterator for the current axis starting in the given contextNode.

Specified by:

axisIterator in interface Step

Parameters:

contextNode - the node from which to follow this step

support - the remaining context for the traversal

Returns:

an iterator over the nodes along the axis

Throws:

UnsupportedAxisException - if the navigator does not support this step's axis

evaluate

public List evaluate(Context context)
              throws JaxenException

Description copied from interface: Step

For each node in the given context calls matches() for every node on the axis, then filters the result by each of the predicates.

Specified by:

evaluate in interface Step

Parameters:

context - the node in context of its position in the document

Returns:

a list of matching nodes

Throws:

JaxenException