org.springframework.expression.spel.support
Class StandardTypeComparator

java.lang.Object
  org.springframework.expression.spel.support.StandardTypeComparator

All Implemented Interfaces:

TypeComparator

public class StandardTypeComparator
extends Object
implements TypeComparator

A simple basic TypeComparator implementation. It supports comparison of numbers and types implementing Comparable.

Since:

3.0

Author:

Andy Clement, Juergen Hoeller

Constructor Summary

StandardTypeComparator()

Method Summary

boolean	canCompare(Object left, Object right) Return true if the comparator can compare these two objects
int	compare(Object left, Object right) Compare two objects.

Methods inherited from class java.lang.Object

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

Constructor Detail

StandardTypeComparator

public StandardTypeComparator()

Method Detail

compare

public int compare(Object left,
                   Object right)
            throws SpelEvaluationException

Description copied from interface: TypeComparator

Compare two objects.

Specified by:

compare in interface TypeComparator

Parameters:

left - the first object

right - the second object

Returns:

0 if they are equal, <0 if the first is smaller than the second, or >0 if the first is larger than the second

Throws:

SpelEvaluationException

canCompare

public boolean canCompare(Object left,
                          Object right)

Description copied from interface: TypeComparator

Return true if the comparator can compare these two objects

Specified by:

canCompare in interface TypeComparator

Parameters:

left - the first object

right - the second object

Returns:

true if the comparator can compare these objects