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A more performant JSON-LD 1.1 Processor & API forked from Titanium JSON-LD.

The newest version!

/*
 * Copyright 2020 APICATALOG and HASMAC.
 *
 * 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.
 * 
 * SPDX-License-Identifier: Apache-2.0
 */

package no.hasmac.jsonld.context.cache;

import java.util.LinkedHashMap;
import java.util.Map;

public final class LruCache implements Cache {

    private final Map cache;

    public LruCache(final int maxCapacity) {
        this.cache = new LinkedHashMap((int)(maxCapacity / 0.75 + 1), 0.75f, true) {

            private static final long serialVersionUID = 4822962879473741809L;

            @Override
            protected boolean removeEldestEntry(Map.Entry eldest) {
                return this.size() > maxCapacity;
            }
        };
    }

    @Override
    public boolean containsKey(final K key) {
        return cache.containsKey(key);
    }

    @Override
    public V get(final K key) {
        return cache.get(key);
    }

    @Override
    public void put(final K key, V value) {
        cache.put(key, value);
    }

    public long size() {
        return cache.size();
    }
}