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AllPassFilter.java
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/
AllPassFilter.java
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/*
* *****************************************************************************
* Copyright (C) 2014-2023 Dennis Sheirer
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>
* ****************************************************************************
*/
package io.github.dsheirer.filter;
import java.util.function.Function;
/**
* Implements an all-pass filter that automatically passes/allows any presented object.
*
* A key type of String is used, but that makes no difference in how this filter functions.
*/
public class AllPassFilter<T> extends Filter<T, String>
{
private static final String KEY = "Other/Unlisted";
private final AllPassKeyExtractor mKeyExtractor = new AllPassKeyExtractor();
/**
* Constructor
* @param name to display for this filter
*/
public AllPassFilter(String name)
{
super(name);
add(new FilterElement<>(KEY));
}
@Override
public Function getKeyExtractor()
{
return mKeyExtractor;
}
/**
* Key extractor that always returns the same (String)key.
*/
public class AllPassKeyExtractor implements Function<T,String>
{
@Override
public String apply(T t)
{
return KEY;
}
}
}