org.zkoss.pivot.impl.util

Class Calculations

java.lang.Object

org.zkoss.pivot.impl.util.Calculations

public class Calculations
extends Object

A utility class for the pivot package.

Author:

jumperchen

Constructor Summary

Constructors

Constructor and Description
Calculations()

Method Summary

Modifier and Type	Method and Description
static int	compare(Object o1, Object o2) A common compareTo method for String, Date, Float, Double, Integer, Long, Short, Byte, Calendar, and Boolean.
static Collection<Object>	getNonNullValues(Collection<Object> data) Filter the array to return an array containing only non null values
static List<Number>	getNumericValues(Collection<Object> data, boolean strict) Filter the array to return an array containing only numeric values
static Number	sum(Collection<Object> data) A common sum method for Double, Float, Integer, Long, Short, and Byte.

Methods inherited from class java.lang.Object

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

Constructor Detail

Calculations

public Calculations()

Method Detail

compare

public static int compare(Object o1,
                          Object o2)

A common compareTo method for String, Date, Float, Double, Integer, Long, Short, Byte, Calendar, and Boolean. Otherwise Object.toString() will be assumed.

sum

public static Number sum(Collection<Object> data)

A common sum method for Double, Float, Integer, Long, Short, and Byte. Otherwise, it will count the data length.

getNonNullValues

public static Collection<Object> getNonNullValues(Collection<Object> data)

Filter the array to return an array containing only non null values

getNumericValues

public static List<Number> getNumericValues(Collection<Object> data,
                                            boolean strict)

Filter the array to return an array containing only numeric values