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/*
 * Copyright 2015 Francois Steyn - Adept Internet (PTY) LTD ([email protected]).
 *
 * 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.adeptnet.sql;

import java.sql.SQLException;
import java.util.Objects;
import java.util.function.Consumer;

/**
 * Represents an operation that accepts a single input argument and returns no
 * result. Unlike most other functional interfaces, {@code Consumer} is expected
 * to operate via side-effects.
 *
 * 

* This is a functional interface * whose functional method is {@link #accept(Object)}. * * Copied from java.util.function.Consumer * * @author Francois Steyn - Adept Internet (PTY) LTD ([email protected]) * @param the type of the input to the operation */ @FunctionalInterface public interface SQLConsumer { /** * Performs this operation on the given argument. * * @param t the input argument * @throws java.sql.SQLException if underlying operation throws SQLException * @throws SQLDataAccessException if underlying operation throws * SQLDataAccessException */ void accept(T t) throws java.sql.SQLException, SQLDataAccessException; /** * Returns a composed {@code Consumer} that performs, in sequence, this * operation followed by the {@code after} operation. If performing either * operation throws an exception, it is relayed to the caller of the * composed operation. 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 Consumer} that performs in sequence this * operation followed by the {@code after} operation * @throws NullPointerException if {@code after} is null */ default SQLConsumer andThen(SQLConsumer after) { Objects.requireNonNull(after); return (T t) -> { accept(t); after.accept(t); }; } /** * * @param the type of arguments to the consumer * @param sqlConsumer SQLConsumer that will be wrapped * @return Consumer with possible SQLDataAccessException when SQLException * thrown by the SQLConsumer */ static Consumer checked(SQLConsumer sqlConsumer) { return (T t) -> { try { sqlConsumer.accept(t); } catch (SQLException ex) { throw new SQLDataAccessException(ex.getMessage(), ex); } }; } }





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