com.imsweb.validation.internal.ValidationLRUCache Maven / Gradle / Ivy

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/*
 * Copyright (C) 2017 Information Management Services, Inc.
 */
package com.imsweb.validation.internal;

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

public class ValidationLRUCache extends LinkedHashMap {

    private static final long serialVersionUID = 1L;

    private final int _maxEntries;

    public ValidationLRUCache(int maxEntries) {
        super(maxEntries + 1, 1.0f, true);
        _maxEntries = maxEntries;
    }

    @Override
    protected boolean removeEldestEntry(Entry eldest) {
        return size() > _maxEntries;
    }

    @Override
    public boolean equals(Object o) {
        return super.equals(o); // max entries is not part of the state of the map which should only be based on what the map contains
    }

    @Override
    public int hashCode() {
        return super.hashCode(); // max entries is not part of the state of the map which should only be based on what the map contains
    }
}