001/*
002 * Copyright 2018 Paul Schaub.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package org.pgpainless.key.selection.keyring;
017
018import java.util.Set;
019
020import org.pgpainless.util.MultiMap;
021
022public interface KeyRingSelectionStrategy<R, C, O> {
023
024    boolean accept(O identifier, R keyRing);
025
026    Set<R> selectKeyRingsFromCollection(O identifier, C keyRingCollection);
027
028    MultiMap<O, R> selectKeyRingsFromCollections(MultiMap<O, C> keyRingCollections);
029}