Class PositionFunction

java.lang.Object

org.jaxen.function.PositionFunction

All Implemented Interfaces:

Function

public class PositionFunction
extends Object
implements Function

4.1 number position()

The position function returns a number equal to the context position from the expression evaluation context.

Author:

bob mcwhirter (bob @ werken.com)

See Also:

• Section 4.1 of the XPath Specification

Constructor Summary

Constructors

Constructor	Description
PositionFunction()	Create a new PositionFunction object.

Method Summary

Modifier and Type	Method	Description
Object	call(Context context, List args)	Returns the position of the context node in the context node-set.
static Double	evaluate(Context context)	Returns the position of the context node in the context node-set.

Methods inherited from class Object

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

Constructor Details

PositionFunction

public PositionFunction()

Create a new PositionFunction object.

Method Details

call

public Object call(Context context,
 List args)
            throws FunctionCallException

Returns the position of the context node in the context node-set.

Specified by:

call in interface Function

Parameters:

context - the context at the point in the expression where the function is called

args - an empty list

Returns:

a Double containing the context position

Throws:

FunctionCallException - if args is not empty

See Also:

• Context.getSize()

evaluate

public static Double evaluate(Context context)

Returns the position of the context node in the context node-set.

Parameters:

context - the context at the point in the expression where the function is called

Returns:

a Double containing the context position

See Also:

• Context.getPosition()