net.sf.saxon.expr
Class ParentNodeExpression

java.lang.Object
  net.sf.saxon.expr.Expression
      net.sf.saxon.expr.SingleNodeExpression
          net.sf.saxon.expr.ParentNodeExpression

All Implemented Interfaces:

Serializable, SourceLocator, Container, EvaluableItem, SequenceIterable, InstructionInfoProvider

public class ParentNodeExpression
extends SingleNodeExpression

Class ParentNodeExpression represents the XPath expression ".." or "parent::node()"

See Also:

Serialized Form

Field Summary

Fields inherited from class net.sf.saxon.expr.Expression

EVALUATE_METHOD, ITERATE_METHOD, PROCESS_METHOD

Constructor Summary

ParentNodeExpression()

Method Summary

void	display(int level, PrintStream out, Configuration config) Diagnostic print of expression structure
boolean	equals(Object other) Is this expression the same as another expression?
NodeInfo	getNode(XPathContext context) Return the node selected by this SingleNodeExpression
int	hashCode() get HashCode for comparing two expressions

Methods inherited from class net.sf.saxon.expr.SingleNodeExpression

computeCardinality, computeSpecialProperties, effectiveBooleanValue, evaluateItem, getIntrinsicDependencies, getItemType, iterate, optimize, typeCheck

Methods inherited from class net.sf.saxon.expr.Expression

adoptChildExpression, checkPermittedContents, computeDependencies, computeStaticProperties, doPromotion, evaluateAsString, getCardinality, getColumnNumber, getContainingProcedure, getDependencies, getExecutable, getHostLanguage, getImplementationMethod, getInstructionInfo, getLineNumber, getLocationId, getLocationProvider, getParentExpression, getPublicId, getSlotsUsed, getSpecialProperties, getSystemId, hasBadParentPointer, iterateSubExpressions, markTailFunctionCalls, process, promote, replaceSubExpression, resetStaticProperties, setLocationId, setParentExpression, setParentExpression, simplify, suppressValidation

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ParentNodeExpression

public ParentNodeExpression()

Method Detail

getNode

public NodeInfo getNode(XPathContext context)
                 throws XPathException

Return the node selected by this SingleNodeExpression

Specified by:

getNode in class SingleNodeExpression

Parameters:

context - The context for the evaluation

Returns:

the parent of the current node defined by the context

Throws:

XPathException

equals

public boolean equals(Object other)

Is this expression the same as another expression?

Overrides:

equals in class Object

hashCode

public int hashCode()

get HashCode for comparing two expressions

Overrides:

hashCode in class Object

display

public void display(int level,
                    PrintStream out,
                    Configuration config)

Diagnostic print of expression structure

Specified by:

display in class Expression

Parameters:

level - indentation level for this expression

out - Output destination