com.helger.commons.compare

Class ConverterComparator<DATATYPE,PARTTYPE>

java.lang.Object

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

com.helger.commons.compare.AbstractPartComparator<DATATYPE,PARTTYPE>

com.helger.commons.compare.ConverterComparator<DATATYPE,PARTTYPE>

Type Parameters:

DATATYPE - The data type to be compared

PARTTYPE - The part type that is extracted from the data element and compared

All Implemented Interfaces:

ISerializableComparator<DATATYPE>, Serializable, Comparator<DATATYPE>

@NotThreadSafe
public class ConverterComparator<DATATYPE,PARTTYPE>
extends AbstractPartComparator<DATATYPE,PARTTYPE>

This is a Comparator for objects which are extracted from a converter.

Author:

Philip Helger

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
ConverterComparator(Comparator<? super PARTTYPE> aPartComparator, IConverter<DATATYPE,PARTTYPE> aConverter) Constructor.

Method Summary

Modifier and Type	Method and Description
IConverter<DATATYPE,PARTTYPE>	getConverter()
protected PARTTYPE	getPart(DATATYPE aObject) Implement this method to extract the part to compare from the original object.

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

getPartComparator, mainCompare, toString

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

ConverterComparator

public ConverterComparator(@Nonnull
                           Comparator<? super PARTTYPE> aPartComparator,
                           @Nonnull
                           IConverter<DATATYPE,PARTTYPE> aConverter)

Constructor.

Parameters:

aPartComparator - The comparator for comparing the IDs. May not be null.

aConverter - The converter to be used to extract the part from the source object. May not be null.

Method Detail

getConverter

@Nonnull
public final IConverter<DATATYPE,PARTTYPE> getConverter()

Returns:

The converter passed in the constructor. Never null.

getPart

@Nullable
protected final PARTTYPE getPart(@Nonnull
                                            DATATYPE aObject)

Description copied from class: AbstractPartComparator

Implement this method to extract the part to compare from the original object.

Specified by:

getPart in class AbstractPartComparator<DATATYPE,PARTTYPE>

Parameters:

aObject - The object to be compared. Never null.

Returns:

The part of the source object to be compared with the part comparator provided in the constructor. May be null.