ImmutablePair.java

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/* Copyright 2017 Telstra Open Source
 *
 *   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 org.openkilda.messaging.model;

import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.databind.annotation.JsonSerialize;
import com.google.common.base.MoreObjects;

import java.io.Serializable;
import java.util.Objects;

@JsonSerialize
@JsonInclude(JsonInclude.Include.NON_NULL)
public class ImmutablePair<L, R> implements Serializable {
    static final long serialVersionUID = 1L;

    @JsonProperty("forward")
    public final L left;

    @JsonProperty("reverse")
    public final R right;

    @Override
    public String toString() {
        return MoreObjects.toStringHelper(this)
                .add("forward", left)
                .add("reverse", right)
                .toString();
    }

    @Override
    public boolean equals(Object object) {
        if (this == object) {
            return true;
        }
        if (object == null || getClass() != object.getClass()) {
            return false;
        }

        ImmutablePair flowPair = (ImmutablePair) object;
        return Objects.equals(getLeft(), flowPair.getLeft()) &&
                Objects.equals(getRight(), flowPair.getRight());
    }

    @Override
    public int hashCode() {
        return Objects.hash(getLeft(), getRight());
    }

    @JsonCreator
    public ImmutablePair(@JsonProperty("forward") L left, @JsonProperty("reverse") R right) {
        this.left = left;
        this.right = right;
    }

    public L getLeft() {
        return left;
    }

    public R getRight() {
        return right;
    }
}