net.ymate.platform.persistence.annotation.Property Maven / Gradle / Ivy
/*
* Copyright 2007-2107 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 net.ymate.platform.persistence.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;
/**
*
* Column
*
*
* 声明 Model 类中的一个方法或成员所对应的数据表字段，若参数 name 为空，则默认采用对应方法或成员的名称；
*
*
* @author 刘镇([email protected])
* @version 0.0.0
*
*
* 版本号 动作 修改人 修改时间
*
*
*
* 0.0.0
* 创建类
* 刘镇
* 2011-6-15下午10:39:19
*
*
*/
@Retention(RetentionPolicy.RUNTIME)
@Target( { ElementType.FIELD })
@Documented
public @interface Property {
/**
* @return 字段名称，若为空，则默认采用对应方法或成员的名称
*/
String name() default "";
/**
* @return 字段值是否自增长
*/
boolean isAutoIncrement() default false;
/**
* @return 序列名称（只适用类似 Oracle 等数据库，配合 isAutoIncrement 参数一同使用）
*/
String sequenceName() default "";
/**
* @return 返回字段默认值，若参数值为“@NULL”则表示该字段为null
*/
String defaultValue() default "@NULL";
}