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/* ********************************************************************
 * Copyright (C) 2019  51Degrees Mobile Experts Limited.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see .
 * ******************************************************************** */

package fiftyone.caching;

import java.io.IOException;

/**
 * Extension of general cache contract to provide for getting a value with a particular
 * value loaded. Primarily used to allow the value loader to be an already instantiated value of the
 * type V to avoid construction costs of that value. (In other words the loader has the signature
 * "extends V implements IValueLoader").
 * 
 * Used only in UA Matching.
 */
public interface LoadingCache extends Cache {

    V get(K key, ValueLoader loader) throws IOException;
}