The Hibernate mapping file (a .hbm.xml file) and the Hibernate properties file (hibernate.properties file) form the basis of a Hibernate application. The mapping file consists of class definitions. Each class definition consists of a set of properties to be mapped to a Java class and a database table. The field/column types and additional characteristics of the columns such as length, not-null, and unique are also specified with the properties. Some of the more often used tags in the mapping file are listed in the following table:
|
Tag Name |
Description |
Attributes |
Sub Elements |
|---|---|---|---|
|
hibernate-mapping |
The root element |
schema, package |
class |
|
class |
Specifies the class definition for mapping a Hibernate Java class to a database table. |
table,schema |
id,property,set,list |
|
id |
Required element in a class definition. |
column,type,length |
column,generator |
|
property |
Specifies a class property, which corresponds to a table column and a Java... |