com.github.adejanovski.cassandra.jdbc.Pair Maven / Gradle / Ivy

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JDBC wrapper for the DataStax CQL Java Driver.

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/*
 *
 *   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.adejanovski.cassandra.jdbc;

import com.google.common.base.Objects;

public class Pair
{
    public final T1 left;
    public final T2 right;

    protected Pair(T1 left, T2 right)
    {
        this.left = left;
        this.right = right;
    }

    @Override
    public final int hashCode()
    {
        int hashCode = 31 + (left == null ? 0 : left.hashCode());
        return 31*hashCode + (right == null ? 0 : right.hashCode());
    }

    @Override
    public final boolean equals(Object o)
    {
        if(!(o instanceof Pair))
            return false;
        Pair that = (Pair)o;
        // handles nulls properly
        return Objects.equal(left, that.left) && Objects.equal(right, that.right);
    }

    @Override
    public String toString()
    {
        return "(" + left + "," + right + ")";
    }

    public static  Pair create(X x, Y y)
    {
        return new Pair(x, y);
    }
}