org.microbean.microprofile.config

Class ConverterComparator

java.lang.Object

org.microbean.microprofile.config.ConverterComparator

All Implemented Interfaces:

Comparator<Converter<?>>

public final class ConverterComparator
extends Object
implements Comparator<Converter<?>>

A Comparator that considers only the priority, if any, available from the Converter instances being compared, in accordance with the minimal requirements of the MicroProfile Config specification as spelled out (only) in the Converter API documentation.

This Comparator implementation is, and must be, inconsistent with equals(), as implied by the same specification.

Author:

Laird Nelson

See Also:

compare(Converter, Converter), Converter

Field Summary

Fields

Modifier and Type	Field and Description
static ConverterComparator	INSTANCE The sole instance of this class.

Method Summary

Modifier and Type	Method and Description
int	compare(Converter<?> firstConverter, Converter<?> secondConverter) Compares two Converters, returning -1 if the first has a priority greater than that of the second and 1 if the second has a priority greater than that of the first, and 0 in all other cases.

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

Field Detail

INSTANCE

public static final ConverterComparator INSTANCE

The sole instance of this class.

Method Detail

compare

public final int compare(Converter<?> firstConverter,
                         Converter<?> secondConverter)

Compares two Converters, returning -1 if the first has a priority greater than that of the second and 1 if the second has a priority greater than that of the first, and 0 in all other cases.

This method may return 0 when both Converters are not otherwise semantically equal.

Specified by:

compare in interface Comparator<Converter<?>>

Parameters:

firstConverter - the first of two Converters; may be null

secondConverter - the second of two Converters; may be null

Returns:

-1 if the first has a priority greater than that of the second and 1 if the second has a priority greater than that of the first, and 0 in all other cases

See Also:

Converter