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

A location path expression.

Nested Class Summary

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

Expression.PointerIterator, Expression.ValueIterator

Field Summary

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)	Constructs a new LocationPath.

Method Summary

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

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

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

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

Constructor Details

LocationPath

public LocationPath(boolean absolute,
 Step[] steps)

Constructs a new LocationPath.

Parameters:

absolute - whether this is an absolute path

steps - to evaluate

Method Details

compute

public 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

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

computeValue

public 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

isAbsolute

public boolean isAbsolute()

Tests whether this LocationPath is absolute.

Returns:

boolean

toString

public String toString()

Overrides:

toString in class Object