com.github.cm.heclouds.adapter.mqttadapter.mqtt.Hash Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of protocol-adapter-sdk Show documentation

OneNET Studio泛协议接入SDK

There is a newer version: 1.0.4

/*
 * Copyright (C) 2018 Issey Yamakoshi
 *
 * 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 com.github.cm.heclouds.adapter.mqttadapter.mqtt;

public abstract class Hash {

    @Override
    public boolean equals(Object obj) {
        return obj instanceof Hash;
    }

    public static final class MutableHash extends Hash {

        private int hashCode = 0;

        public Hash set(int hashCode) {
            this.hashCode = hashCode;
            return this;
        }

        @Override
        public int hashCode() {
            return hashCode; // expect to cache the ConcurrentHashMap
        }
    }

    public static final class ImmutableHash extends Hash {

        private final int hashCode;

        public ImmutableHash(int hashCode) {
            this.hashCode = hashCode;
        }

        @Override
        public int hashCode() {
            return hashCode;
        }
    }
}