dsto.dfc.databeans
Interface ISorter<T>

All Superinterfaces:

Comparator<T>

All Known Subinterfaces:

IFilterSorter<T>

All Known Implementing Classes:

CategorySorter, FederatedSorterFilter, PropertySorterFilter

public interface ISorter<T>
extends Comparator<T>

Interface for view sorters.

See Also:

DataObjectView

Field Summary

static IFilterSorter	DEFAULT_SORTER A sorter that delegates to DefaultComparator.
static ISorter	NULL_SORTER A sorter that does nothing.

Method Summary

boolean	affectsOrder(PropertyPath path) Return true if a change to a given path might affect the sort order of the object at the root of the path.
int	compare(T o1, T o2) See Comparator.compare(Object, Object).

Methods inherited from interface java.util.Comparator

equals

Field Detail

NULL_SORTER

static final ISorter NULL_SORTER

A sorter that does nothing.

DEFAULT_SORTER

static final IFilterSorter DEFAULT_SORTER

A sorter that delegates to DefaultComparator.

Method Detail

compare

int compare(T o1,
            T o2)

See Comparator.compare(Object, Object).

Specified by:

compare in interface Comparator<T>

affectsOrder

boolean affectsOrder(PropertyPath path)

Return true if a change to a given path might affect the sort order of the object at the root of the path. This is an opportunity for optimization: simply returning true will work at the cost of some wasted ovehead.