com.phloc.commons.id

Class ComparatorHasID<IDTYPE,DATATYPE extends IHasID<IDTYPE>>

java.lang.Object

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

com.phloc.commons.compare.AbstractPartComparator<DATATYPE,IDTYPE>

com.phloc.commons.id.ComparatorHasID<IDTYPE,DATATYPE>

Type Parameters:

IDTYPE - The type of the ID

DATATYPE - The type of elements to be compared.

All Implemented Interfaces:

Serializable, Comparator<DATATYPE>

Direct Known Subclasses:

ComparatorTreeItemID

public class ComparatorHasID<IDTYPE,DATATYPE extends IHasID<IDTYPE>>
extends AbstractPartComparator<DATATYPE,IDTYPE>

This is a collation Comparator for objects that implement the IHasID interface with a class that does NOT implements Comparable.

Author:

Philip Helger

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
ComparatorHasID(Comparator<? super DATATYPE> aNestedComparator, Comparator<? super IDTYPE> aIDComparator) Comparator with default sort order and a nested comparator.
ComparatorHasID(Comparator<? super IDTYPE> aIDComparator) Comparator with default sort order and no nested comparator.
ComparatorHasID(ESortOrder eSortOrder, Comparator<? super DATATYPE> aNestedComparator, Comparator<? super IDTYPE> aIDComparator) Constructor with sort order and a nested comparator.
ComparatorHasID(ESortOrder eSortOrder, Comparator<? super IDTYPE> aIDComparator) Constructor with sort order and no nested comparator.

Method Summary

Methods

Modifier and Type	Method and Description
protected IDTYPE	getPart(DATATYPE aObject)

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

mainCompare

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

compare, 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

ComparatorHasID

public ComparatorHasID(@Nonnull
               Comparator<? super IDTYPE> aIDComparator)

Comparator with default sort order and no nested comparator.

Parameters:

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

ComparatorHasID

public ComparatorHasID(@Nonnull
               ESortOrder eSortOrder,
               @Nonnull
               Comparator<? super IDTYPE> aIDComparator)

Constructor with sort order and no nested comparator.

Parameters:

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

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

ComparatorHasID

public ComparatorHasID(@Nullable
               Comparator<? super DATATYPE> aNestedComparator,
               @Nonnull
               Comparator<? super IDTYPE> aIDComparator)

Comparator with default sort order and a nested comparator.

Parameters:

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

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

ComparatorHasID

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

Constructor 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.

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

Method Detail

getPart

@Nullable
protected IDTYPE getPart(DATATYPE aObject)

Specified by:

getPart in class AbstractPartComparator<DATATYPE extends IHasID<IDTYPE>,IDTYPE>