org.dataone.service.types.v1.comparators

Class SysMetaModificationDateComparator

java.lang.Object

org.dataone.service.types.v1.comparators.SysMetaModificationDateComparator

All Implemented Interfaces:

Comparator

public class SysMetaModificationDateComparator
extends Object
implements Comparator

A Comparator compares two SystemMetadata objects base on the date of the modification.

Author:

tao

Constructor Summary

Constructors

Constructor and Description
SysMetaModificationDateComparator()

Method Summary

Methods

Modifier and Type	Method and Description
int	compare(Object o1, Object o2) Compares the order based on the modified date of the two SystemMetadata objects.
boolean	equals(Object obj) Indicates whether some other object is "equal to" this comparator.

Methods inherited from class java.lang.Object

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

Constructor Detail

SysMetaModificationDateComparator

public SysMetaModificationDateComparator()

Method Detail

compare

public int compare(Object o1,
          Object o2)
            throws ClassCastException,
                   NullPointerException

Compares the order based on the modified date of the two SystemMetadata objects.

Specified by:

compare in interface Comparator

Parameters:

o1 -

o2 -

Returns:

a negative integer, zero, or a positive integer as the first argument is less than, equal to, or greater than the second.

Throws:

ClassCastException

NullPointerException

equals

public boolean equals(Object obj)

Indicates whether some other object is "equal to" this comparator.

Specified by:

equals in interface Comparator

Overrides:

equals in class Object

Parameters:

obj -

Returns:

true if the specified object is an instance of the SysMetaModifiedDateComparator; otherwise false.

Throws:

ClassCastException