com.caucho.xpath.pattern

Class FromPreviousSibling

java.lang.Object

com.caucho.xpath.pattern.AbstractPattern

com.caucho.xpath.pattern.FromPreviousSibling

public class FromPreviousSibling
extends AbstractPattern

matches if we can find a following sibling matching the parent pattern.

Field Summary

Fields inherited from class com.caucho.xpath.pattern.AbstractPattern

_child, _parent, log, XMLNS

Constructor Summary

Constructors

Constructor and Description
FromPreviousSibling(AbstractPattern parent)

Method Summary

Modifier and Type	Method and Description
AbstractPattern	copyAxis() Returns the node itself for the axis.
AbstractPattern	copyPosition() Returns null since the axis isn't part of the position pattern.
int	count(org.w3c.dom.Node node, Env env, AbstractPattern pattern) Counts the nodes within the axis matching the pattern.
NodeIterator	createNodeIterator(org.w3c.dom.Node node, ExprEnvironment env, AbstractPattern match) Creates a new node iterator.
org.w3c.dom.Node	firstNode(org.w3c.dom.Node node, ExprEnvironment env) Returns the first node in the selection order.
boolean	isAscending() preceding-sibling's iterator is in reverse document order.
boolean	isStrictlyAscending() Returns true if the pattern is strictly ascending.
boolean	isUnique() Returns true if the pattern returns unique values.
boolean	match(org.w3c.dom.Node node, ExprEnvironment env) matches if we can find a following sibling that matches the parent.
org.w3c.dom.Node	nextNode(org.w3c.dom.Node node, org.w3c.dom.Node lastNOde) Returns the next node in the selection order.
int	position(org.w3c.dom.Node node, Env env, AbstractPattern pattern) The count of nodes between the test-node and the axis.
java.lang.String	toString()

Methods inherited from class com.caucho.xpath.pattern.AbstractPattern

findAny, getNodeName, getParent, getPrefix, getPriority, lastNode, select, selectUnique, toPatternString

Methods inherited from class java.lang.Object

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

Constructor Detail

FromPreviousSibling

public FromPreviousSibling(AbstractPattern parent)

Method Detail

match

public boolean match(org.w3c.dom.Node node,
                     ExprEnvironment env)
              throws XPathException

matches if we can find a following sibling that matches the parent.

Specified by:

match in class AbstractPattern

Parameters:

node - the current node

env - the variable environment

Returns:

true if the pattern matches

Throws:

XPathException

isAscending

public boolean isAscending()

preceding-sibling's iterator is in reverse document order.

Overrides:

isAscending in class AbstractPattern

isUnique

public boolean isUnique()

Returns true if the pattern returns unique values.

firstNode

public org.w3c.dom.Node firstNode(org.w3c.dom.Node node,
                                  ExprEnvironment env)

Returns the first node in the selection order.

Overrides:

firstNode in class AbstractPattern

Parameters:

node - the current node

Returns:

the first node

nextNode

public org.w3c.dom.Node nextNode(org.w3c.dom.Node node,
                                 org.w3c.dom.Node lastNOde)

Returns the next node in the selection order.

Overrides:

nextNode in class AbstractPattern

Parameters:

node - the current node

lastNode - the last node

Returns:

the next node

position

public int position(org.w3c.dom.Node node,
                    Env env,
                    AbstractPattern pattern)
             throws XPathException

The count of nodes between the test-node and the axis.

Parameters:

node - the current node

env - the variable environment

pattern - the position pattern

Returns:

the node's position.

Throws:

XPathException

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

count

public int count(org.w3c.dom.Node node,
                 Env env,
                 AbstractPattern pattern)
          throws XPathException

Counts the nodes within the axis matching the pattern.

Overrides:

count in class AbstractPattern

Parameters:

node - the current node

env - the variable environment

pattern - the position pattern

Returns:

the count of the node list.

Throws:

XPathException

createNodeIterator

public NodeIterator createNodeIterator(org.w3c.dom.Node node,
                                       ExprEnvironment env,
                                       AbstractPattern match)
                                throws XPathException

Creates a new node iterator.

Overrides:

createNodeIterator in class AbstractPattern

Parameters:

node - the starting node

env - the variable environment

match - the axis match pattern

Returns:

the node iterator

Throws:

XPathException

copyAxis

public AbstractPattern copyAxis()

Returns the node itself for the axis.

Overrides:

copyAxis in class AbstractPattern

copyPosition

public AbstractPattern copyPosition()

Returns null since the axis isn't part of the position pattern.

Overrides:

copyPosition in class AbstractPattern

isStrictlyAscending

public boolean isStrictlyAscending()

Returns true if the pattern is strictly ascending.

Overrides:

isStrictlyAscending in class AbstractPattern