com.caucho.xpath.pattern

Class FromAttributes

java.lang.Object

com.caucho.xpath.pattern.AbstractPattern

com.caucho.xpath.pattern.FromAttributes

public class FromAttributes
extends AbstractPattern

matches attributes of an element.

Field Summary

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

_child, _parent, log, XMLNS

Constructor Summary

Constructors

Constructor and Description
FromAttributes(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 all siblings matching the pattern.
NodeIterator	createNodeIterator(org.w3c.dom.Node node, ExprEnvironment env, AbstractPattern match) Creates a new node iterator.
boolean	equals(java.lang.Object b) Returns true if the two patterns are equal.
org.w3c.dom.Node	firstNode(org.w3c.dom.Node node, ExprEnvironment env) Returns the first node in the selection order.
boolean	isStrictlyAscending() Returns true if the pattern is strictly ascending.
boolean	isUnique() Returns true if the pattern's selector returns unique nodes.
boolean	match(org.w3c.dom.Node node, ExprEnvironment env) matches if the node is an attribute.
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 position of the child is the count of previous siblings matching the pattern.
java.lang.String	toString()

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

FromAttributes

public FromAttributes(AbstractPattern parent)

Method Detail

match

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

matches if the node is an attribute.

Specified by:

match in class AbstractPattern

Parameters:

node - the current node

env - the variable environment

Returns:

true if the pattern matches

Throws:

XPathException

position

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

The position of the child is the count of previous siblings matching the pattern. Technically, attributes don't have positions, but our DOM allows it.

Parameters:

node - the current node

env - the variable environment

pattern - the position pattern

Returns:

the node's position.

Throws:

XPathException

count

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

counts all siblings matching the pattern.

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.

Parameters:

node - the starting node

env - the variable environment

match - the axis match pattern

Returns:

the node iterator

Throws:

XPathException

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

isStrictlyAscending

public boolean isStrictlyAscending()

Returns true if the pattern is strictly ascending.

equals

public boolean equals(java.lang.Object b)

Returns true if the two patterns are equal.

Overrides:

equals in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

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

isUnique

public boolean isUnique()

Returns true if the pattern's selector returns unique nodes.

Overrides:

isUnique in class AbstractPattern