org.zkoss.pivot.impl.util
Class Calculations

java.lang.Object
  org.zkoss.pivot.impl.util.Calculations

public class Calculations
extends java.lang.Object

A utility class for the pivot package.

Author:

jumperchen

Constructor Summary

Calculations()

Method Summary

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

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

getNonNullValues

public static java.util.Collection<java.lang.Object> getNonNullValues(java.util.Collection<java.lang.Object> data)

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

getNumericValues

public static java.util.List<java.lang.Number> getNumericValues(java.util.Collection<java.lang.Object> data,
                                                                boolean strict)

Filter the array to return an array containing only numeric values