src/main/java/org/apache/sling/xss/impl/status/FixedSizeMap.java

/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 ~ Licensed to the Apache Software Foundation (ASF) under one
 ~ or more contributor license agreements.  See the NOTICE file
 ~ distributed with this work for additional information
 ~ regarding copyright ownership.  The ASF licenses this file
 ~ to you 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 org.apache.sling.xss.impl.status;

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

public class FixedSizeMap<K, V> extends LinkedHashMap<K, V> {

    private final int maxSize;

    public FixedSizeMap(int maxSize) {
        super();
        this.maxSize = maxSize;
    }

    @Override
    protected boolean removeEldestEntry(Map.Entry<K, V> eldest) {
        return size() > maxSize;
    }

    @Override
    public boolean equals(Object o) {
        if (o instanceof FixedSizeMap) {
            FixedSizeMap other = (FixedSizeMap) o;
            return super.equals(other) && maxSize == other.maxSize;
        }
        return false;
    }

    @Override
    public int hashCode() {
        return super.hashCode() + maxSize;
    }
}