Package org.jaxen.function

Class NormalizeSpaceFunction

java.lang.Object

org.jaxen.function.NormalizeSpaceFunction

All Implemented Interfaces:

Function

public class NormalizeSpaceFunction
extends Object
implements Function

4.2 string normalize-space(string)

The normalize-space function returns the argument string with whitespace normalized by stripping leading and trailing whitespace and replacing sequences of whitespace characters by a single space. Whitespace characters are the same as those allowed by the S production in XML. If the argument is omitted, it defaults to the context node converted to a string, in other words the string-value of the context node.

Author:

James Strachan (james@metastuff.com)

See Also:

Section 4.2 of the XPath Specification

Constructor Summary

Constructors

Constructor	Description
NormalizeSpaceFunction()	Create a new NormalizeSpaceFunction object.

Method Summary

Modifier and Type	Method	Description
Object	call(Context context, List args)	Returns the string-value of the first item in args after removing all leading and trailing white space, and replacing each other sequence of whitespace by a single space.
static String	evaluate(Object strArg, Navigator nav)	Returns the string-value of strArg after removing all leading and trailing white space, and replacing each other sequence of whitespace by a single space.

Methods inherited from class java.lang.Object

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

Constructor Detail

NormalizeSpaceFunction

public NormalizeSpaceFunction()

Create a new NormalizeSpaceFunction object.

Method Detail

call

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

Returns the string-value of the first item in args after removing all leading and trailing white space, and replacing each other sequence of whitespace by a single space. Whitespace consists of the characters space (0x32), carriage return (0x0D), linefeed (0x0A), and tab (0x09).

Specified by:

call in interface Function

Parameters:

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

args - a list that contains exactly one item

Returns:

a normalized String

Throws:

FunctionCallException - if args does not have length one

evaluate

public static String evaluate(Object strArg,
                              Navigator nav)

Returns the string-value of strArg after removing all leading and trailing white space, and replacing each other sequence of whitespace by a single space. Whitespace consists of the characters space (0x32), carriage return (0x0D), linefeed (0x0A), and tab (0x09).

Parameters:

strArg - the object whose string-value is normalized

nav - the context at the point in the expression when the function is called

Returns:

the normalized string-value