Hibernate entity column定义
2015-04-10 15:31
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//log
private static Logger logger = Logger.getLogger(RoleApi.class);
private static Gson g = new Gson();
//columnDefinition字段定义
@Column(name = "F_FileFuncType", columnDefinition = "char(1) default '' comment '文件类型:A建筑照片,B配电柜照片,C支路布置图,D部署方案'")
private char fileFuncType;
@Column(name = "F_FileDesc", nullable = true, columnDefinition = "varchar(80) default NULL comment '文件描述'")
private String fileDesc;
@Column(name = "F_FileSize", columnDefinition = "int default 0 comment '文件大小:单位byte'")
private int fileSize;
@Column(name = "F_FileDate", nullable = true, columnDefinition = "datetime COMMENT '上传时间'")
private Date fileDate;
@Column(name = "F_BuildLong", nullable = true, columnDefinition = "numeric(18,4) DEFAULT 0 COMMENT '建筑坐标-经度,建筑任意点的经度读数(默认为东经,单位为度,如131.2576度)'")
private BigDecimal buildLong;
@Column(name = "F_IsStandard", nullable = true, columnDefinition = "bit DEFAULT 0 COMMENT'是否是标杆建筑,False–否, default True–是'")
private boolean isStandard;
//数据库前缀
T_*_**:T-Table(数据库表) F-Field(数据表字段)
T_DC_**:DC-Data Center(数据中心)
T_BD_**:BD-Building(建筑)
T_DT_**:DT-Dictionary(字典)
T_EC_**:EC-Energy Consumption(能耗)
T_ST_**:ST-Setting(设计安装)
T_OV_**:OV-Original Value(原始值)
p_ 表示与权限相关的表
tb_ 表示普通的业务表
rel_表示中间表
如何截断或者外键关联表
//取消外键
SET FOREIGN_KEY_CHECKS=0;
//执行操作
truncate tablename;
drop table tablename;
//启用外键
SET FOREIGN_KEY_CHECKS=1;
private static Logger logger = Logger.getLogger(RoleApi.class);
private static Gson g = new Gson();
//columnDefinition字段定义
@Column(name = "F_FileFuncType", columnDefinition = "char(1) default '' comment '文件类型:A建筑照片,B配电柜照片,C支路布置图,D部署方案'")
private char fileFuncType;
@Column(name = "F_FileDesc", nullable = true, columnDefinition = "varchar(80) default NULL comment '文件描述'")
private String fileDesc;
@Column(name = "F_FileSize", columnDefinition = "int default 0 comment '文件大小:单位byte'")
private int fileSize;
@Column(name = "F_FileDate", nullable = true, columnDefinition = "datetime COMMENT '上传时间'")
private Date fileDate;
@Column(name = "F_BuildLong", nullable = true, columnDefinition = "numeric(18,4) DEFAULT 0 COMMENT '建筑坐标-经度,建筑任意点的经度读数(默认为东经,单位为度,如131.2576度)'")
private BigDecimal buildLong;
@Column(name = "F_IsStandard", nullable = true, columnDefinition = "bit DEFAULT 0 COMMENT'是否是标杆建筑,False–否, default True–是'")
private boolean isStandard;
//数据库前缀
T_*_**:T-Table(数据库表) F-Field(数据表字段)
T_DC_**:DC-Data Center(数据中心)
T_BD_**:BD-Building(建筑)
T_DT_**:DT-Dictionary(字典)
T_EC_**:EC-Energy Consumption(能耗)
T_ST_**:ST-Setting(设计安装)
T_OV_**:OV-Original Value(原始值)
p_ 表示与权限相关的表
tb_ 表示普通的业务表
rel_表示中间表
如何截断或者外键关联表
//取消外键
SET FOREIGN_KEY_CHECKS=0;
//执行操作
truncate tablename;
drop table tablename;
//启用外键
SET FOREIGN_KEY_CHECKS=1;
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