com.helger.commons.compare

Class AbstractLongComparator<DATATYPE>

java.lang.Object

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

com.helger.commons.compare.AbstractLongComparator<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:

ISerializableComparator<DATATYPE>, Serializable, Comparator<DATATYPE>

Direct Known Subclasses:

ComparatorHasSimpleLongID, ComparatorThreadID

@NotThreadSafe
public abstract class AbstractLongComparator<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
AbstractLongComparator()

Method Summary

Methods

Modifier and Type	Method and Description
protected abstract long	getAsLong(DATATYPE aObject) Protected method to convert the passed object into a long value.
protected int	mainCompare(DATATYPE aElement1, DATATYPE aElement2)

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

compare, getNestedComparator, getSortOrder, isNullValuesComeFirst, setNestedComparator, setNullValuesComeFirst, setSortOrder, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

equals

Constructor Detail

AbstractLongComparator

public AbstractLongComparator()

Method Detail

getAsLong

protected abstract long getAsLong(@Nonnull
             DATATYPE aObject)

Protected method to convert the passed object into a long value.

Parameters:

aObject - The source object

Returns:

The result long value.

mainCompare

protected final int mainCompare(@Nonnull
              DATATYPE aElement1,
              @Nonnull
              DATATYPE aElement2)

Specified by:

mainCompare in class AbstractComparator<DATATYPE>

Parameters:

aElement1 - First element to compare. Never null.

aElement2 - Second element to compare. Never null.

Returns:

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