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

Fields

Modifier and Type	Field and Description
private static ConstantFilter	ACCEPT_ALL_FILTER
private static ConstantFilter	REJECT_ALL_FILTER

Constructor Summary

Constructors

Modifier	Constructor and Description
private	ConstantFilter() The constructor.

Method Summary

Modifier and Type	Method and Description
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.