Package org.opencastproject.util

Class EqualsUtil

java.lang.Object

org.opencastproject.util.EqualsUtil

public final class EqualsUtil
extends Object

Utility function helping to implement equality.

Method Summary

Modifier and Type	Method	Description
static boolean	bothNotNull(Object a, Object b)
static boolean	eqClasses(Object a, Object b)	Check if a and b have the same class (Object.getClass()).
static boolean	eqListUnsorted(List<?> as, List<?> bs)	Compare the (distinct) elements of two lists for equality treating the lists as sets.

Methods inherited from class java.lang.Object

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

Method Details

eqClasses

public static boolean eqClasses(Object a,
 Object b)

Check if a and b have the same class (Object.getClass()). Each may be null.

eqListUnsorted

public static boolean eqListUnsorted(List<?> as,
 List<?> bs)

Compare the (distinct) elements of two lists for equality treating the lists as sets.

Sets by definition do not allow multiplicity of elements; a set is a (possibly empty) collection of distinct elements. As Lists may contain non-unique entries, this method removes duplicates before continuing with the comparison check. Examples of 1. equality: {1, 2} = {2, 1} = {1, 1, 2} = {1, 2, 2, 1, 2}, null = null 2. unequal: {1, 2, 2} != {1, 2, 3}, null != {}

bothNotNull

public static boolean bothNotNull(Object a,
 Object b)