ddf.catalog.util.impl

Class TemporalResultComparator

java.lang.Object

ddf.catalog.util.impl.TemporalResultComparator

All Implemented Interfaces:

Comparator<Result>

public class TemporalResultComparator
extends Object
implements Comparator<Result>

Comparator for the temporal attribute of 2 Result objects.

Constructor Summary

Constructors

Constructor and Description
TemporalResultComparator(org.opengis.filter.sort.SortOrder sortOrder) Constructs the comparator with the specified sort order, either temporal ascending or temporal descending.
TemporalResultComparator(org.opengis.filter.sort.SortOrder sortOrder, String temporalAttribute) Constructs the comparator with the specified sort order, either temporal ascending or temporal descending and the Attribute Name to sort on.

Method Summary

Modifier and Type	Method and Description
int	compare(Result contentA, Result contentB) Compares the effective date between the two results.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Detail

TemporalResultComparator

public TemporalResultComparator(org.opengis.filter.sort.SortOrder sortOrder)

Constructs the comparator with the specified sort order, either temporal ascending or temporal descending.

Parameters:

sortOrder - the temporal sort order, if null is passed in, then the default SortOrder applies, which is SortOrder.DESCENDING.

TemporalResultComparator

public TemporalResultComparator(org.opengis.filter.sort.SortOrder sortOrder,
                                String temporalAttribute)

Constructs the comparator with the specified sort order, either temporal ascending or temporal descending and the Attribute Name to sort on.

Parameters:

sortOrder - the temporal sort order, if null is passed in, then the default SortOrder applies, which is SortOrder.DESCENDING.

temporalAttribute - the name of the attribute to sort on. Default is Metacard.EFFECTIVE

Method Detail

compare

public int compare(Result contentA,
                   Result contentB)

Compares the effective date between the two results.

Specified by:

compare in interface Comparator<Result>

Returns:

1 if A is null and B is non-null -1 if A is non-null and B is null 0 if both A and B are null 1 if temporal ascending and A > B; -1 if temporal ascending and B > A -1 if temporal descending and A > B; 1 if temporal descending and B > A