org.springframework.expression.spel.support

Class StandardTypeComparator

java.lang.Object

org.springframework.expression.spel.support.StandardTypeComparator

All Implemented Interfaces:

TypeComparator

public class StandardTypeComparator
extends java.lang.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, Giovanni Dall'Oglio Risso

Constructor Summary

Constructors

Constructor and Description
StandardTypeComparator()

Method Summary

Modifier and Type	Method and Description
boolean	canCompare(java.lang.Object left, java.lang.Object right) Return true if the comparator can compare these two objects.
private static int	compare(byte x, byte y)
private static int	compare(int x, int y)
private static int	compare(long x, long y)
int	compare(java.lang.Object left, java.lang.Object right) Compare two given objects.
private static int	compare(short x, short y)

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(java.lang.Object left,
                          java.lang.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(java.lang.Object left,
                   java.lang.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, <0 if the first is smaller than the second, or >0 if the first is larger than the second

Throws:

SpelEvaluationException

compare

private static int compare(long x,
                           long y)

compare

private static int compare(int x,
                           int y)

compare

private static int compare(short x,
                           short y)

compare

private static int compare(byte x,
                           byte y)