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Method of fast database query in complicated environment.

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/*
 * Copyright (c) 2016-2088, fastquery.org and/or its affiliates. All rights reserved.
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
 *
 * For more information, please see http://www.fastquery.org/.
 *
 */

package org.fastquery.core;

import org.apache.commons.lang3.StringUtils;

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;

/**
 * 标识改操作
 *
 * @author xixifeng ([email protected])
 */
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.METHOD, ElementType.ANNOTATION_TYPE})
@Documented
public @interface Modifying
{

    /**
     * 主键字段的名称,默认值"id"
     *
     * @return String
     */
    String id() default "id";

    /**
     * 指定当前正在修改的表
     *
     * @return String
     */
    String table() default StringUtils.EMPTY;

    /**
     * 改操作若返回实体,selectFields 用来明确指定查询相应表的哪几个字段,默认是 "*",字段与字段之间请用英文逗号隔开
     *
     * @return String
     */
    String selectFields() default "*";
}