io.mybatis.provider.EntityColumnFactory Maven / Gradle / Ivy
/*
* Copyright 2020-2022 the original author or authors.
*
* 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 io.mybatis.provider;
import java.util.List;
import java.util.Optional;
/**
* 实体类信息工厂,可以通过 SPI 加入处理链
*
* @author liuzh
*/
public interface EntityColumnFactory extends Order {
/**
* 创建列信息,一个字段可能不是列,也可能是列,还有可能对应多个列(例如 ValueObject对象)
*
* @param entityTable
* @param field 字段信息
* @param chain 调用下一个
* @return 实体类中列的信息,如果返回空,则不属于实体中的列
*/
Optional> createEntityColumn(EntityTable entityTable, EntityField field, Chain chain);
/**
* 工厂链
*/
interface Chain {
/**
* 创建列信息,一个字段可能不是列,也可能是列,还有可能对应多个列(例如 ValueObject对象)
*
* @param entityTable
* @param field 字段信息
* @return 实体类中列的信息,如果返回空,则不属于实体中的列
*/
Optional> createEntityColumn(EntityTable entityTable, EntityField field);
}
}
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