com.novell.xsl.pattern
Class RelativePathPattern

java.lang.Object
  com.novell.xsl.pattern.RelativePathPattern

All Implemented Interfaces:

Pattern

Direct Known Subclasses:

AbsolutePathPattern

public class RelativePathPattern

extends Object

implements Pattern

Implements the following XSLT Pattern constructions: [4] RelativePathPattern

Field Summary

protected Axis	axis
protected RelativePathPattern	lhs
protected StepPattern	rhs

Fields inherited from interface com.novell.xsl.pattern.Pattern

ANY_TARGET, ATTRIBUTE_NAMED_TARGET, ATTRIBUTE_WILDCARD_TARGET, COMMENT_TARGET, ELEMENT_NAMED_TARGET, ELEMENT_WILDCARD_TARGET, NAMESPACE_TARGET, PI_TARGET, ROOT_TARGET, TEXT_TARGET

Constructor Summary

protected	RelativePathPattern() Constructor for use by AbsolutePathPattern to represent a pattern of '/'.
protected	RelativePathPattern(RelativePathPattern copy) Constructor for use by AbsolutePathPattern to represent a pattern of '/' RelativePathPattern
	RelativePathPattern(RelativePathPattern lhs, int opr, StepPattern rhs) Construct a RelativePathPattern that corresponds to the XSLT productions: RelativePathPattern := RelativePathPattern '/' StepPattern | RelativePathPattern '//' StepPattern
	RelativePathPattern(StepPattern pattern) Construct a RelativePathPattern that corresponds to the XSLT construction: RelativePathPattern ::= StepPattern

Method Summary

void	dump(PrintWriter writer, int indent) Print the pattern in a readable form for debugging.
double	getDefaultPriority() Return the default priority for this pattern.
int	getTarget() Return the target type of this Pattern.
ExpandedQName	getTargetName() Return the name of the patterns target, if there is a target name.
boolean	match(Node node, ExpressionContext context) Return true or false depending on whether the passed node matches the XSLT Pattern or not.
protected Node	performMatch(Node node, ExpressionContext context) Perform the match semantics on the passed node.
String	toString() Provide a readable description for debugging.

Methods inherited from class java.lang.Object

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

Field Detail

lhs

protected RelativePathPattern lhs

axis

protected Axis axis

rhs

protected StepPattern rhs

Constructor Detail

RelativePathPattern

public RelativePathPattern(StepPattern pattern)

Construct a RelativePathPattern that corresponds to the XSLT construction: RelativePathPattern ::= StepPattern

Parameters:

pattern - The StepPattern that makes up the RelativePathPattern

RelativePathPattern

public RelativePathPattern(RelativePathPattern lhs,
                           int opr,
                           StepPattern rhs)

Construct a RelativePathPattern that corresponds to the XSLT productions: RelativePathPattern := RelativePathPattern '/' StepPattern | RelativePathPattern '//' StepPattern

Parameters:

lhs - The RelativePathPattern to which to append the StepPattern.

opr - OperatorToken.SLASH or OperatorToken.SLASH_SLASH.

rhs - The StepPattern to be composed with the RelativePathPattern.

RelativePathPattern

protected RelativePathPattern()

Constructor for use by AbsolutePathPattern to represent a pattern of '/'.

RelativePathPattern

protected RelativePathPattern(RelativePathPattern copy)

Constructor for use by AbsolutePathPattern to represent a pattern of '/' RelativePathPattern

Parameters:

copy - The RelativePathPattern following the '/'

Method Detail

toString

public String toString()

Provide a readable description for debugging.

Returns:

String representation

match

public boolean match(Node node,
                     ExpressionContext context)
              throws XPathEvaluationException

Return true or false depending on whether the passed node matches the XSLT Pattern or not. The passed ExpressionContext is necessary for evaluation of XPath Predicate expressions, which may be part of a Pattern, as well as for namespace resolution.

Specified by:

match in interface Pattern

Parameters:

node - The node to match.

context - The context for matching.

Returns:

True if the node matches the pattern, false otherwise.

Throws:

XPathEvaluationException

getDefaultPriority

public double getDefaultPriority()

Return the default priority for this pattern. See XSLT spec for information on default priority calculation.

Specified by:

getDefaultPriority in interface Pattern

Returns:

-0.5, 0.0, or 0.5

getTarget

public int getTarget()

Return the target type of this Pattern. This is one of the values defined in the Pattern interface (ELEMENT_NAMED_TARGET, ELEMENT_WILDCARD_TARGET, etc.)

Specified by:

getTarget in interface Pattern

Returns:

The target type value for this Pattern.

getTargetName

public ExpandedQName getTargetName()

Return the name of the patterns target, if there is a target name. This may return null if there is no target name for this pattern (text(), node(), etc.). However, if getTarget() returns ELEMENT_NAMED_TARGET or ATTRIBUTE_NAMED_TARGET this will never return null.

Specified by:

getTargetName in interface Pattern

Returns:

The target name or null.

dump

public void dump(PrintWriter writer,
                 int indent)

Print the pattern in a readable form for debugging.

Specified by:

dump in interface Pattern

Parameters:

writer - The output device.

indent - Number of tabs to indent the result.

performMatch

protected Node performMatch(Node node,
                            ExpressionContext context)
                     throws XPathEvaluationException

Perform the match semantics on the passed node. Return the left-most-matching node. This member exists to facilitate AbsolutePathPattern

Parameters:

node - The node to match.

context - The expression context for matching.

Returns:

Node that matches left-most step in path pattern

Throws:

XPathEvaluationException