*@sinceJava Persistence 1.0*/publicenumEnumType {/**Persist enumerated type property or field as an integer.*/ORDINAL,/**Persist enumerated type property or field as a string.*/STRING } 如果不使用该注解,就是在上面说的默认的情况是使用Enum中的ordinal属性来完成,所以关于这部分就不详细阐述了。 ...
在Java中Enum是一种“奇葩”的存在,“奇葩”不代表没用,对于这种比较特殊的存在,hibernate会有很多种选择来完成Enum类型字段的映射,首先要说明的是在hibernate都是把Enum类型的字段映射成基本类型的字段,并且我这里不使用任何配置文件来配置映射,而是统一使用注解这种方式来完成映射。 注意...
Specifies that a persistent property or field should be persisted as a enumerated type. The Enumerated annotation may be used in conjunction with the Basic annotation, or in conjunction with the ElementCollection annotation when the element collection value is of basic type. If the enumerated type ...
本文整理了Java中org.activityinfo.model.type.enumerated.EnumType类的一些代码示例,展示了EnumType类的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台,是从一些精选项目中提取出来的代码,具有较强的参考意义,能在一定程度帮忙到你。EnumType类的具体详情如下:包路径:org.activityinfo.model.type.enum...
<!-- Drop and re-create the database schema on startup --> <property name="hbm2ddl.auto">create</property><!-- 当没有这张表时,自动创建 ,create最常用--> <!-- update: 在编程的过程中,需要向表中添加新的字段,不用在数据库中添加新字段,程序运行起来后,会自动添加--> ...
i from Item i where i.validated = true or select i.id, i.validated from Item i . The Java Item class in your domain model doesn’t have this property; hence there is no place to put annotations. The only way to map such a virtual property is with an hbm.xml native metadata file...
What would be really awesome is if the JPA provider could scan the table on startup and somehow update the enum constant code values with the data from the @EnumeratedColumn to avoid having to duplicate and hardcode the same values from the database table into in the Java enum type itself...
$java ArrayTroubleTooException in thread "main" java.lang.IllegalArgumentException: argument type mismatch at java.lang.reflect.Array.setLong(Native Method) at ArrayTroubleToo.main(ArrayTroubleToo.java:9) Tip:TheArray.set*()andArray.get*()methods will perform automatic widening conversion but will...
In some embodiments, the server decodes each of the encoded URL links. The server may identify data about the user from a cookie communicated via a click by the user on the encoded URL link. The server may identify traffic data comprising one or more of a browser type, a referring web ...
Delphi allows us to work with the elements in an enumerated type using an index that comes from the order that they were listed in. In the previous example, Monday in theTWeekDaystype declaration has the index 0, Tuesday has the index 1, and so on. The functions listed in the table be...