com.helger.commons.compare

Class AbstractIntegerComparator<DATATYPE>

java.lang.Object

com.helger.commons.compare.AbstractComparator<DATATYPE>

com.helger.commons.compare.AbstractIntegerComparator<DATATYPE>

Type Parameters:

DATATYPE - The data type to be compared. Must somehow have a value that can be compared as a long value.

All Implemented Interfaces:

Serializable, Comparator<DATATYPE>

Direct Known Subclasses:

ComparatorHasSimpleIntID, ComparatorHasSimpleLongID, ComparatorThreadID

public abstract class AbstractIntegerComparator<DATATYPE>
extends AbstractComparator<DATATYPE>

Abstract comparator that handles values that can be represented as long values.

Author:

Philip Helger

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
AbstractIntegerComparator()
AbstractIntegerComparator(Comparator<? super DATATYPE> aNestedComparator) Comparator with default sort order and a nested comparator.
AbstractIntegerComparator(ESortOrder eSortOrder) Compare with a special order.
AbstractIntegerComparator(ESortOrder eSortOrder, Comparator<? super DATATYPE> aNestedComparator) Comparator with sort order and a nested comparator.

Method Summary

Methods

Modifier and Type	Method and Description
protected abstract long	asLong(DATATYPE aObject)
protected int	mainCompare(DATATYPE aElement1, DATATYPE aElement2)

Methods inherited from class com.helger.commons.compare.AbstractComparator

compare, getNestedComparator, getSortOrder, setSortOrder

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

equals

Constructor Detail

AbstractIntegerComparator

public AbstractIntegerComparator()

AbstractIntegerComparator

public AbstractIntegerComparator(@Nonnull
                         ESortOrder eSortOrder)

Compare with a special order.

Parameters:

eSortOrder - The sort order to use. May not be null.

AbstractIntegerComparator

public AbstractIntegerComparator(@Nullable
                         Comparator<? super DATATYPE> aNestedComparator)

Comparator with default sort order and a nested comparator.

Parameters:

aNestedComparator - The nested comparator to be invoked, when the main comparison resulted in 0.

AbstractIntegerComparator

public AbstractIntegerComparator(@Nonnull
                         ESortOrder eSortOrder,
                         @Nullable
                         Comparator<? super DATATYPE> aNestedComparator)

Comparator with sort order and a nested comparator.

Parameters:

eSortOrder - The sort order to use. May not be null.

aNestedComparator - The nested comparator to be invoked, when the main comparison resulted in 0.

Method Detail

asLong

protected abstract long asLong(DATATYPE aObject)

mainCompare

protected final int mainCompare(DATATYPE aElement1,
              DATATYPE aElement2)

Specified by:

mainCompare in class AbstractComparator<DATATYPE>

Parameters:

aElement1 - First element to compare. No information on the null status.

aElement2 - Second element to compare. No information on the null status.

Returns:

a negative integer, zero, or a positive integer as the first argument is less than, equal to, or greater than the second.