com.landawn.abacus.cache.CaffeineCache Maven / Gradle / Ivy

/*
 * Copyright (C) 2017 HaiYang Li
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */

package com.landawn.abacus.cache;

import java.util.Set;

import com.github.benmanes.caffeine.cache.Cache;
import com.landawn.abacus.util.N;

/**
 * TODO
 * 
 * @param 
 * @param 
 * 
 * @since 0.9
 * 
 * @author haiyang li
 */
public class CaffeineCache extends AbstractCache {
    private final Cache cacheImpl;
    private boolean isClosed = false;

    public CaffeineCache(Cache cache) {
        this.cacheImpl = cache;
    }

    @Override
    public V gett(K k) {
        assertNotClosed();

        return cacheImpl.getIfPresent(k);
    }

    @Override
    public boolean put(K k, V v, long liveTime, long maxIdleTime) {
        assertNotClosed();

        cacheImpl.put(k, v); // TODO

        return true;
    }

    @Override
    public void remove(K k) {
        assertNotClosed();

        cacheImpl.invalidate(k);
    }

    @Override
    public boolean containsKey(K k) {
        assertNotClosed();

        return get(k).isPresent();
    }

    @Override
    public Set keySet() {
        throw new UnsupportedOperationException();
    }

    @Override
    public int size() {
        assertNotClosed();

        return N.toIntExact(cacheImpl.estimatedSize());
    }

    @Override
    public void clear() {
        assertNotClosed();

        cacheImpl.cleanUp();
    }

    @Override
    public void close() {
        assertNotClosed();

        clear();

        isClosed = true;
    }

    @Override
    public boolean isClosed() {
        return isClosed;
    }

    protected void assertNotClosed() {
        if (isClosed) {
            throw new IllegalStateException("This object pool has been closed");
        }
    }
}