| java.lang.Object
 org.springframework.util.comparator.NullSafeComparator
| NullSafeComparator | | public class NullSafeComparator implements Comparator(Code) | | A Comparator that will safely compare nulls to be lower or higher than
other objects. Can decorate a given Comparator or work on Comparables.
author:
Keith Donald
author:
Juergen Hoeller
since:
1.2.2
See Also: Comparable |
| Field Summary | |
| final public static NullSafeComparator | NULLS_HIGH
A shared default instance of this comparator, treating nulls higher
than non-null objects. | | final public static NullSafeComparator | NULLS_LOW
A shared default instance of this comparator, treating nulls lower
than non-null objects. |
| Constructor Summary | |
| public | NullSafeComparator(Comparator comparator, boolean nullsLow)
Create a NullSafeComparator that sorts null based on the
provided flag, decorating the given Comparator. |
| NULLS_HIGH | | final public static NullSafeComparator NULLS_HIGH(Code) | | A shared default instance of this comparator, treating nulls higher
than non-null objects.
|
| NULLS_LOW | | final public static NullSafeComparator NULLS_LOW(Code) | | A shared default instance of this comparator, treating nulls lower
than non-null objects.
|
| NullSafeComparator | | public NullSafeComparator(Comparator comparator, boolean nullsLow)(Code) | | Create a NullSafeComparator that sorts null based on the
provided flag, decorating the given Comparator.
When comparing two non-null objects, the specified Comparator will be used.
The given underlying Comparator must be able to handle the elements that this
Comparator will be applied to.
Parameters:
comparator - the comparator to use when comparing two non-null objects
Parameters:
nullsLow - whether to treat nulls lower or higher than non-null objects |
| hashCode | | public int hashCode()(Code) | | |
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