Package org.apache.commons.jxpath.ri.compiler

Class LocationPath

java.lang.Object

org.apache.commons.jxpath.ri.compiler.Expression

org.apache.commons.jxpath.ri.compiler.Path

org.apache.commons.jxpath.ri.compiler.LocationPath

public class LocationPath
extends Path

Version:

$Revision: 652845 $ $Date: 2008-05-02 12:46:46 -0500 (Fri, 02 May 2008) $

Author:

Dmitri Plotnikov

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.commons.jxpath.ri.compiler.Expression

Expression.PointerIterator, Expression.ValueIterator

Field Summary

Fields

Modifier and Type	Field	Description
private boolean	absolute

Fields inherited from class org.apache.commons.jxpath.ri.compiler.Expression

NOT_A_NUMBER, ONE, ZERO

Constructor Summary

Constructors

Constructor	Description
LocationPath(boolean absolute, Step[] steps)	Create a new LocationPath.

Method Summary

Modifier and Type	Method	Description
java.lang.Object	compute(EvalContext context)	Evaluates the expression.
boolean	computeContextDependent()	Implemented by subclasses and result is cached by isContextDependent()
java.lang.Object	computeValue(EvalContext context)	Evaluates the expression.
boolean	isAbsolute()	Learn whether this LocationPath is absolute.
java.lang.String	toString()

Methods inherited from class org.apache.commons.jxpath.ri.compiler.Expression

isContextDependent, iterate, iteratePointers

Methods inherited from class java.lang.Object

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

Methods inherited from class org.apache.commons.jxpath.ri.compiler.Path

areBasicPredicates, buildContextChain, createContextForStep, evalSteps, getSingleNodePointerForSteps, getSteps, isSimplePath, isSimpleStep, searchForPath

Field Detail

absolute

private boolean absolute

Constructor Detail

LocationPath

public LocationPath(boolean absolute,
                    Step[] steps)

Create a new LocationPath.

Parameters:

absolute - whether this is an absolute path

steps - to evaluate

Method Detail

isAbsolute

public boolean isAbsolute()

Learn whether this LocationPath is absolute.

Returns:

boolean

computeContextDependent

public boolean computeContextDependent()

Description copied from class: Expression

Implemented by subclasses and result is cached by isContextDependent()

Overrides:

computeContextDependent in class Path

Returns:

calculated context-dependentness as boolean

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

compute

public java.lang.Object compute(EvalContext context)

Description copied from class: Expression

Evaluates the expression. If the result is a node set, returns the first element of the node set.

Specified by:

compute in class Expression

Parameters:

context - evaluation context

Returns:

Object

computeValue

public java.lang.Object computeValue(EvalContext context)

Description copied from class: Expression

Evaluates the expression. If the result is a node set, returns the first element of the node set.

Specified by:

computeValue in class Expression

Parameters:

context - evaluation context

Returns:

Object