net.sf.mmm.util.filter.base
Class ConstantFilter<V>

java.lang.Object
  net.sf.mmm.util.filter.base.ConstantFilter<V>

Type Parameters:

V - is the generic type of the filtered objects.

All Implemented Interfaces:

Filter<V>

public final class ConstantFilter<V>
extends Object
implements Filter<V>

This is an implementation of Filter that either accepts or rejects all objects to filter.

Since:

1.1.0

Author:

Joerg Hohwiller (hohwille at users.sourceforge.net)

Field Summary

private static ConstantFilter	ACCEPT_ALL_FILTER
private static ConstantFilter	REJECT_ALL_FILTER

Constructor Summary

private

ConstantFilter() The constructor.

Method Summary

boolean	accept(V value) This method determines if the given value should be accepted.
static <V> Filter<V>	getInstance(boolean accept) This method gets the an instance of this class.

Methods inherited from class java.lang.Object

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

Field Detail

ACCEPT_ALL_FILTER

private static final ConstantFilter ACCEPT_ALL_FILTER

See Also:

getInstance(boolean)

REJECT_ALL_FILTER

private static final ConstantFilter REJECT_ALL_FILTER

See Also:

getInstance(boolean)

Constructor Detail

ConstantFilter

private ConstantFilter()

The constructor.

Method Detail

accept

public boolean accept(V value)

This method determines if the given value should be accepted.

Specified by:

accept in interface Filter<V>

Parameters:

value - is the value to check.

Returns:

true if the given value is acceptable, false if it should be filtered.

getInstance

public static <V> Filter<V> getInstance(boolean accept)

This method gets the an instance of this class.

Type Parameters:

V - is the generic type of the filtered object.

Parameters:

accept - - true if the returned Filter should accept all objects, false to reject all objects.

Returns:

the requested filter.