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/*
    This file is part of the iText (R) project.
    Copyright (c) 1998-2023 Apryse Group NV
    Authors: Apryse Software.

    This program is offered under a commercial and under the AGPL license.
    For commercial licensing, contact us at https://itextpdf.com/sales.  For AGPL licensing, see below.

    AGPL licensing:
    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 com.itextpdf.commons.datastructures;

import java.util.Collection;
import java.util.Collections;
import java.util.Map;
import java.util.Set;
import java.util.WeakHashMap;

/**
 * Concurrent weak hash map implementation.
 * 
 * @param  type of the keys
 * @param  type of the values
 */
public class ConcurrentWeakMap implements Map {
    private final Map map = Collections.synchronizedMap(new WeakHashMap<>());

    /**
     * {@inheritDoc}
     */
    @Override
    public int size() {
        return map.size();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public boolean isEmpty() {
        return map.isEmpty();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public boolean containsKey(Object key) {
        return map.containsKey(key);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public boolean containsValue(Object value) {
        return map.containsValue(value);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public V get(Object key) {
        return map.get(key);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public V put(K key, V value) {
        return map.put(key, value);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public V remove(Object key) {
        return map.remove(key);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void putAll(Map m) {
        map.putAll(m);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void clear() {
        map.clear();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public Set keySet() {
        return map.keySet();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public Collection values() {
        return map.values();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public Set> entrySet() {
        return map.entrySet();
    }
}