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/*
 * 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.bookkeeper.common.kv;

/**
 * A Key/Value pair.
 *
 * @param  key type
 * @param  value type
 */
public class KVImpl implements KV {
    private final K key;
    private final V value;

    @Override
    public K key() {
        return key;
    }

    @Override
    public V value() {
        return value;
    }

    public KVImpl(final K key, final V value) {
        this.key = key;
        this.value = value;
    }

    @Override
    public String toString() {
        return "KVImpl(key=" + this.getKey() + ", value=" + this.getValue() + ")";
    }

    @Override
    public boolean equals(final Object o) {
        if (o == this) return true;
        if (!(o instanceof KVImpl)) return false;
        final KVImpl other = (KVImpl) o;
        if (!other.canEqual((Object) this)) return false;
        final Object this$key = this.getKey();
        final Object other$key = other.getKey();
        if (this$key == null ? other$key != null : !this$key.equals(other$key)) return false;
        final Object this$value = this.getValue();
        final Object other$value = other.getValue();
        if (this$value == null ? other$value != null : !this$value.equals(other$value)) return false;
        return true;
    }

    protected boolean canEqual(final Object other) {
        return other instanceof KVImpl;
    }

    @Override
    public int hashCode() {
        final int PRIME = 59;
        int result = 1;
        final Object $key = this.getKey();
        result = result * PRIME + ($key == null ? 43 : $key.hashCode());
        final Object $value = this.getValue();
        result = result * PRIME + ($value == null ? 43 : $value.hashCode());
        return result;
    }

    public K getKey() {
        return this.key;
    }

    public V getValue() {
        return this.value;
    }
}