org.zkoss.pivot
Interface GroupHandler

public interface GroupHandler

A group handler groups different objects in a same group.

Author:

jumperchen

Method Summary

java.lang.Object

getGroup(java.lang.Object data) Returns a object that will be invoked by compareTo(Object) to identify whether the returned object is in the same group.

Method Detail

getGroup

java.lang.Object getGroup(java.lang.Object data)

Returns a object that will be invoked by compareTo(Object) to identify whether the returned object is in the same group.

For example,
there are two date objects("2010/10/08", "2010/12/21") and they return a same object called "2010", so these two date objects will be the same group("2010").

Parameters:

data - a data object