org.danekja.java.misc.serializable

Class SerializableComparatorWrapperClass<T>

java.lang.Object

org.danekja.java.misc.serializable.SerializableComparatorWrapperClass<T>

Type Parameters:

T - comparable type

All Implemented Interfaces:

Serializable, Comparator<T>, SerializableComparator<T>

public class SerializableComparatorWrapperClass<T>
extends Object
implements SerializableComparator<T>

Wrapper for a non-serializable subclass of Comparator, such as Collator. This way you can still use such comparators in a serializable way. This wrapper calls the given SerializableSupplier to retrieve a delegate Comparator which it uses for all calls to its compare(Object, Object)-method. It caches the retrieved Comparator in a transient field for efficiency. Usage example:

 SerializableComparator<Object> collator = new SerializableComparatorWrapper<>(() -> Collator.getInstance(Locale.UK));
 SerializableComparator<Object> objectComparator = SerializableComparator.comparing(Object::toString, collator);
 

(Note that Collator is an instance of Comparator typed with Object, not with a generic type variable.)

Author:

haster

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
SerializableComparatorWrapperClass(SerializableSupplier<Comparator<T>> comparatorSupplier)

Method Summary

Modifier and Type	Method and Description
int	compare(T o1, T o2)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.danekja.java.misc.serializable.SerializableComparator

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

Methods inherited from interface java.util.Comparator

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

Constructor Detail

SerializableComparatorWrapperClass

public SerializableComparatorWrapperClass(SerializableSupplier<Comparator<T>> comparatorSupplier)

Method Detail

compare

public int compare(T o1,
                   T o2)

Specified by:

compare in interface Comparator<T>