net.sf.mmm.util.lang.api

Class ComparatorHelper

java.lang.Object

net.sf.mmm.util.lang.api.ComparatorHelper

final class ComparatorHelper
extends Object

This class contains the implementation of CompareOperator.eval(Object, Object) for Comparable arguments. This allows the implementation to be replaced with a GWT compatible one.

Since:

3.0.0

Author:

Joerg Hohwiller (hohwille at users.sourceforge.net)

Constructor Summary

Constructors

Modifier	Constructor and Description
private	ComparatorHelper() Construction prohibited.

Method Summary

Modifier and Type	Method and Description
(package private) static Object	convert(Object object, Class<?> otherType) This method converts the given value to a more common type.
(package private) static boolean	evalComparable(CompareOperator comparator, Comparable arg1, Comparable arg2) Logic for CompareOperator.eval(Object, Object) with Comparable arguments.

Methods inherited from class java.lang.Object

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

Constructor Detail

ComparatorHelper

private ComparatorHelper()

Construction prohibited.

Method Detail

convert

static Object convert(Object object,
                      Class<?> otherType)

This method converts the given value to a more common type. E.g. instances of Calendar or XMLGregorianCalendar will be converted to Date.

Parameters:

object - is the value to convert.

otherType - the type of the value to compare that differs from the type

Returns:

a simpler representation of value or the same value if on simpler type is known.

evalComparable

static boolean evalComparable(CompareOperator comparator,
                              Comparable arg1,
                              Comparable arg2)

Logic for CompareOperator.eval(Object, Object) with Comparable arguments.

Parameters:

comparator - is the CompareOperator.

arg1 - is the first argument.

arg2 - is the second argument.

Returns:

the result of the CompareOperator applied to the given arguments.