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/*
 * 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
 *
 *      https://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.yuehuanghun.mybatis.milu.annotation;

import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

import javax.persistence.LockModeType;
import javax.persistence.Version;

import com.yuehuanghun.mybatis.milu.tool.StringUtils;

@Documented
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface StatementOptions {
	
	/**
	 * 选择的属性,多个用英文逗号隔开,如id,createTime,仅可为主实体类的属性
* 不为空时exselects的设置无效 * @return 选择的属性 */ String selects() default StringUtils.EMPTY; /** * 不选择的属性,多个用英文逗号隔开,如id,createTime,仅可为主实体类的属性
* @return 不选择的属性 */ String exselects() default StringUtils.EMPTY; /** * 覆盖Mapper的methodName作为查询表达式 * @return 查询表达式 */ String asExpression() default StringUtils.EMPTY; /** * {@link LockModeType} 锁模式.,默认为无
* 本框架下模式READ/WRITE/OPTIMISTIC/OPTIMISTIC_FORCE_INCREMENT都等同于NONE,即无锁,乐观锁是实体在声明{@link Version}之后自动使用的
* PESSIMISTIC_WRITE等于PESSIMISTIC_FORCE_INCREMENT,即使用悲观写锁,如果有{@link Version}声明属性,则自增。
* 如果数据库无读锁(共享锁)则PESSIMISTIC_READ跟PESSIMISTIC_WRITE功能一致 * @return 锁模式.枚举 */ LockModeType lockModeType() default LockModeType.NONE; }




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