rs.baselib.util

Class BeanComparator<T>

java.lang.Object

rs.baselib.util.BeanComparator<T>

All Implemented Interfaces:

Comparator<T>

public class BeanComparator<T>
extends Object
implements Comparator<T>

A comparator based on a list of bean properties. The comparison will be null-safe and exception-safe.

Author:

ralph

Constructor Summary

Constructors

Constructor and Description
BeanComparator(Comparator<Object> comparator, IValueProvider... valueProviders) Constructor.
BeanComparator(Comparator<Object> comparator, String... beanProperties) Constructor.
BeanComparator(IValueProvider... valueProviders) Constructor.
BeanComparator(String... beanProperties) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
int	compare(T o1, T o2)
Comparator<Object>	getComparator() Returns the comparator used to compare the values.
IValueProvider[]	getValueProviders() Returns the value providers of this comparator.

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

BeanComparator

public BeanComparator(String... beanProperties)

Constructor.

Parameters:

beanProperties - the properties in order of priority.

BeanComparator

public BeanComparator(Comparator<Object> comparator,
              String... beanProperties)

Constructor.

Parameters:

comparator - the comparator to be used

beanProperties - the properties in order of priority.

BeanComparator

public BeanComparator(IValueProvider... valueProviders)

Constructor.

Parameters:

valueProviders - the value providers for each of the properties to be compared

BeanComparator

public BeanComparator(Comparator<Object> comparator,
              IValueProvider... valueProviders)

Constructor.

Parameters:

comparator - the comparator to be used

valueProviders - the value providers for each of the properties to be compared

Method Detail

getComparator

public Comparator<Object> getComparator()

Returns the comparator used to compare the values.

Returns:

the comparator

getValueProviders

public IValueProvider[] getValueProviders()

Returns the value providers of this comparator.

Returns:

providers that will be used

compare

public int compare(T o1,
          T o2)

Specified by:

compare in interface Comparator<T>