org.jaxen.function
Class ContainsFunction

java.lang.Object
  org.jaxen.function.ContainsFunction

All Implemented Interfaces:

Function

public class ContainsFunction
extends java.lang.Object
implements Function

4.2 boolean contains(string,string)

The contains function returns true if the first argument string contains the second argument string, and otherwise returns false.

Author:

bob mcwhirter (bob @ werken.com)

See Also:

Section 4.2 of the XPath Specification

Constructor Summary

ContainsFunction()
Create a new ContainsFunction object.

Method Summary

java.lang.Object	call(Context context, java.util.List args) Returns true if the string-value of the first item in args contains string-value of the second item; false otherwise.
static java.lang.Boolean	evaluate(java.lang.Object strArg, java.lang.Object matchArg, Navigator nav) Returns true if the first string contains the second string; false otherwise.

Methods inherited from class java.lang.Object

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

Constructor Detail

ContainsFunction

public ContainsFunction()

Create a new ContainsFunction object.

Method Detail

call

public java.lang.Object call(Context context,
                             java.util.List args)
                      throws FunctionCallException

Returns true if the string-value of the first item in args contains string-value of the second item; false otherwise. If necessary one or both items are converted to a string as if by the XPath string() function.

Specified by:

call in interface Function

Parameters:

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

args - a list containing exactly two items

Returns:

the result of evaluating the function; Boolean.TRUE or Boolean.FALSE

Throws:

FunctionCallException - if args does not have exactly two items

evaluate

public static java.lang.Boolean evaluate(java.lang.Object strArg,
                                         java.lang.Object matchArg,
                                         Navigator nav)

Returns true if the first string contains the second string; false otherwise. If necessary one or both arguments are converted to a string as if by the XPath string() function.

Parameters:

strArg - the containing string

matchArg - the contained string

nav - used to calculate the string-values of the first two arguments

Returns:

Boolean.TRUE if true if the first string contains the second string; Boolean.FALSE otherwise.