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 basic TypeComparator implementation: supports comparison of Number types as well as types implementing Comparable.

Since:

3.0

Author:

Andy Clement, Juergen Hoeller, Giovanni Dall'Oglio Risso

Constructor Summary

Constructors

Constructor and Description
StandardTypeComparator()

Method Summary

Modifier and Type	Method and Description
boolean	canCompare(Object left, Object right) Return true if the comparator can compare these two objects.
int	compare(Object left, Object right) Compare two given 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

canCompare

public boolean canCompare(@Nullable
                          Object left,
                          @Nullable
                          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

compare

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

Description copied from interface: TypeComparator

Compare two given objects.

Specified by:

compare in interface TypeComparator

Parameters:

left - the first object

right - the second object

Returns:

0 if they are equal, a negative integer if the first is smaller than the second, or a positive integer if the first is larger than the second

Throws:

SpelEvaluationException

See Also:

Comparable.compareTo(T)