001/*
002 *  Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
003 *  <p>
004 *  Licensed under the Apache License, Version 2.0 (the "License");
005 *  you may not use this file except in compliance with the License.
006 *  You may obtain a copy of the License at
007 *  <p>
008 *  http://www.apache.org/licenses/LICENSE-2.0
009 *  <p>
010 *  Unless required by applicable law or agreed to in writing, software
011 *  distributed under the License is distributed on an "AS IS" BASIS,
012 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 *  See the License for the specific language governing permissions and
014 *  limitations under the License.
015 */
016
017package com.mybatisflex.annotation;
018
019import java.lang.reflect.ParameterizedType;
020import java.lang.reflect.Type;
021
022/**
023 * 类型支持 insert 监听器。
024 *
025 * @author snow
026 * @author robot.luo
027 * @since 2023/4/28
028 */
029public abstract class AbstractInsertListener<T> implements InsertListener {
030
031    /**
032     * 支持的类型
033     */
034    private final Class<T> supportType;
035
036    @SuppressWarnings("unchecked")
037    protected AbstractInsertListener() {
038        Type[] params = ((ParameterizedType) getClass().getGenericSuperclass()).getActualTypeArguments();
039        if (params.length == 0) {
040            throw new IllegalArgumentException(this.getClass().getSimpleName() + "继承AbstractInsertListener请指定泛型");
041        }
042        supportType = (Class<T>) params[0];
043    }
044
045    /**
046     * 新增操作的前置操作。
047     *
048     * @param entity 实体类
049     */
050    public abstract void doInsert(T entity);
051
052    @Override
053    @SuppressWarnings("unchecked")
054    public void onInsert(Object entity) {
055        if (supportType.isInstance(entity)) {
056            T object = (T) entity;
057            doInsert(object);
058        }
059    }
060
061}