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Spring Cloud Netflix Zuul Trie Matcher

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/**
 * Copyright (c) 2015 the original author or authors
 *
 * 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 io.jmnarloch.spring.cloud.zuul.trie;

import java.util.HashMap;
import java.util.Map;

/**
 * A {@link HashMap} backed trie node.
 *
 * @author Jakub Narloch
 */
class HashMapTrieNode implements AbstractTrie.TrieNode> {

    /**
     * The {@link Map} of children nodes.
     */
    private final Map> next = new HashMap>();

    /**
     * The node value.
     */
    private T value;

    /**
     * {@inheritDoc}
     */
    @Override
    public void setNext(char c, HashMapTrieNode next) {
        this.next.put(c, next);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public HashMapTrieNode getNext(char c) {
        return next.get(c);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void setValue(T value) {
        this.value = value;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public T getValue() {
        return value;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public boolean hasValue() {
        return getValue() != null;
    }
}