com.speedment.runtime.core.manager.Remover Maven / Gradle / Ivy

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A Speedment bundle that shades all dependencies into one jar. This is useful when deploying an application on a server.

There is a newer version: 3.1.18

/**
 *
 * Copyright (c) 2006-2019, Speedment, Inc. All Rights Reserved.
 *
 * 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.speedment.runtime.core.manager;

import com.speedment.runtime.core.exception.SpeedmentException;

import java.util.function.Consumer;
import java.util.function.UnaryOperator;

/**
 * An action that takes an entity and removes it from a data store. This 
 * interface extends the standard {@code UnaryOperator}- and 
 * {@code Consumer}-interfaces so that it can be used inside a {@code Stream}.
 * 
 * @param   the entity type
 * 
 * @author  Per Minborg
 * @since   3.0.1
 */
@FunctionalInterface
public interface Remover extends UnaryOperator, Consumer {

    /**
     * Removes the provided entity from the underlying database and returns the
     * provided entity instance. If the deletion fails for any reason, an
     * unchecked {@link SpeedmentException} is thrown.
     * 
     * Entities are uniquely identified by their primary key(s).
     *
     * @param entity to remove
     * @return the provided entity instance
     *
     * @throws SpeedmentException if the underlying database throws an exception
     * (e.g. SQLException)
     */
    @Override
    ENTITY apply(ENTITY entity) throws SpeedmentException;

    /**
     * Removes the entity from the data store. The specified instance might be
     * modified by this method in some implementations.
     * 
     * @param entity  the entity to remove
     * 
     * @throws SpeedmentException  if removing the entity failed
     */
    @Override
    default void accept(ENTITY entity) {
        apply(entity);
    }
}