de.craftolution.craftoplugin4.services.storage.StorageManager.java Source code

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Here is the source code for de.craftolution.craftoplugin4.services.storage.StorageManager.java

Source

/*
 * This file is part of CraftoPlugin, licensed under the MIT License (MIT).
 *
 * Copyright (c) 2018 CraftolutionDE <https://craftolution.de>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 * Website: http://craftolution.de/
 * Contact: support@craftolution.de
 */
package de.craftolution.craftoplugin4.services.storage;

import com.google.common.collect.Maps;
import com.google.common.collect.Sets;

import java.lang.ref.WeakReference;
import java.util.Map;
import java.util.Optional;
import java.util.Set;

public class StorageManager {

    static Map<String, WeakReference<Storage>> storageMap = Maps.newHashMap();
    static Set<WeakReference<Storage>> storageSet = Sets.newHashSet();

    static void register(Storage storage) {
        WeakReference<Storage> weakRef = new WeakReference<>(storage);

        storageMap.put(storage.getClass().getSimpleName(), weakRef);
        storageSet.add(weakRef);
    }

    static Optional<Storage> getByName(String name) {
        if (!storageMap.containsKey(name)) {
            return Optional.empty();
        }

        WeakReference<Storage> weakRef = storageMap.get(name);
        Storage nullableStorage = weakRef.get();

        return Optional.ofNullable(nullableStorage);
    }

    static Set<Storage> getAll() {
        Set<Storage> set = Sets.newHashSetWithExpectedSize(storageSet.size());

        for (WeakReference<Storage> weakReference : storageSet) {
            Storage nullableStorage = weakReference.get();

            if (nullableStorage != null) {
                set.add(nullableStorage);
            }
        }

        return set;
    }

}