ElementComparator (uk.gov.gchq.gaffer:gaffer2 2.2.0 API)

All Superinterfaces:

Comparator<Element>

All Known Implementing Classes:

ElementPropertyComparator
```
public interface ElementComparator
extends Comparator<Element>
```
Base interface describing Element Comparator instances.
Implementations should be JSON serialiseable

Method Summary

All Methods Instance Methods Default Methods
Modifier and Type	Method	Description
`default Set<Pair<String,String>>`	`getComparableGroupPropertyPairs()`	This should return a set all properties that the comparator requires to be of type Comparable.

Methods inherited from interface java.util.Comparator
compare, equals, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

- Method Detail
  - getComparableGroupPropertyPairs
```
default Set<Pair<String,String>> getComparableGroupPropertyPairs()
```
    This should return a set all properties that the comparator requires to be of type Comparable. As properties are associated with a Group we need to return Group,Property pairs. This is used to validate the the ElementComparator against the schema.
    
    Returns:
    
    set of group,property pairs, in which all properties are required to be comparable.