org.jjoost.util.filters
Class MappedFilter<X,Y>

java.lang.Object
  org.jjoost.util.filters.MappedFilter<X,Y>

All Implemented Interfaces:

java.io.Serializable, Filter<X>

public class MappedFilter<X,Y>
extends java.lang.Object
implements Filter<X>

A filter that applies the provided function to its input before delegating to the provided filter

Author:

b.elliottsmith

See Also:

Serialized Form

Constructor Summary

MappedFilter(Function<X,Y> mapping, Filter<Y> filter)
Constructs a filter that applies the provided function to its input before delegating to the provided filter

Method Summary

boolean	accept(X test) Returns true if the Filter accepts the parameter and false otherwise
static <X,Y> MappedFilter<X,Y>	get(Function<X,Y> mapping, Filter<Y> filter) Returns a filter that applies the provided function to its input before delegating to the provided filter

Methods inherited from class java.lang.Object

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

Constructor Detail

MappedFilter

public MappedFilter(Function<X,Y> mapping,
                    Filter<Y> filter)

Constructs a filter that applies the provided function to its input before delegating to the provided filter

Parameters:

mapping - the function to transform the input variables

filter - the delegate filter

Method Detail

accept

public boolean accept(X test)

Description copied from interface: Filter

Returns true if the Filter accepts the parameter and false otherwise

Specified by:

accept in interface Filter<X>

Parameters:

test - value to test

Returns:

true if the filter accepts test; false otherwise

get

public static <X,Y> MappedFilter<X,Y> get(Function<X,Y> mapping,
                                          Filter<Y> filter)

Returns a filter that applies the provided function to its input before delegating to the provided filter

Parameters:

mapping - the function to transform the input variables

filter - the delegate filter

Returns:

a filter that applies the provided function to its input before delegating to the provided filter