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Functional style programming with plain JDBC

There is a newer version: 0.3.10

/*
 * Copyright 2016- Anatoly Kutyakov
*
* 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 buckelieg.fn.db;

import java.util.Objects;

/**
 * Represents an operation that accepts a single input argument and returns no
 * result with an optional exception.
 *
 * @param  the type of the input to the operation
 * @param  the type of the possible exception
 */
@FunctionalInterface
public interface TryConsumer {

    /**
     * Performs this operation on the given argument which might throw an exception.
     *
     * @param t the input argument
     * @throws E an exception
     */
    void accept(T t) throws E;

    /**
     * Returns a composed {@code TryConsumer} that performs, in sequence, this
     * operation followed by the {@code after} operation. If performing either
     * operation throws an exception, then corresponding exception is thrown.
     * If performing this operation throws an exception,
     * the {@code after} operation will not be performed.
     *
     * @param after the operation to perform after this operation
     * @return a composed {@code TryConsumer} that performs in sequence this
     * operation followed by the {@code after} operation
     * @throws E                    an exception
     * @throws NullPointerException if {@code after} is null
     */
    default TryConsumer andThen(TryConsumer after) throws E {
        Objects.requireNonNull(after);
        return (T t) -> {
            accept(t);
            after.accept(t);
        };
    }

}