/*
 * Copyright (c) 2020 VMware Inc. All Rights Reserved.
 * SPDX-License-Identifier: Apache-2.0
 *
 * 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.hillview.maps.highorder;

import org.hillview.dataset.api.IMap;

import javax.annotation.Nullable;

/**
 * The identity map.
 * @param <T>  Type of data processed.
 */
public class IdMap<T> implements IMap<T, T> {
    static final long serialVersionUID = 1;
    @Nullable
    @Override
    public T apply(@Nullable T data) {
        return data;
    }
}
