How to handle two database insertions fom a single form in spring/ hibernate? - spring

Question

I have 3 model classes,
User.java
public class UserData {
private Integer userID;
private String userName;
private String userPassword;
//getters and setters..
and Permission class like..
Permission.java
public class PermissionsData {
private Integer permissionID;
private Integer userID;
private Integer moduleID;
private boolean permissionIsReadOnly;
private boolean permissionIsModify;
private boolean permissionIsFull;
//getters and setters
amd module class like,
module.java
public class ModuleData {
private Integer modId;
private String modName;
I have some modules in my database. When i am creating a new user, i had listed those modules and had added checkboxes to set permissions. When submitting the form, i need to insert user data to user table and his permissions for each module to the Permission table.
Now i had implemented only inserting roles to the database.. my controller is like..
#RequestMapping(value = "/addRole")
public ModelAndView addNewRole()
{
ModelAndView mav = new ModelAndView("addNewRole");
RoleData role = new RoleData();
mav.getModelMap().put("roleDataObj", role);
List<ModuleData> moduleList = moduleService.getAllModules();
mav.getModelMap().addAttribute("ModuleList", moduleList);
return mav;
}
How can i achieve to add data to two tables on one submit?? i would also like to know about the mapping betwewen modules and permission
I am really new to this spring and hibernate. So plz guide me with sample codes..
Thanks in advance.

Answer 1

if you have set cascading in the mapping
#Cascade(Cascade.all)
private List<Permission> permissions;
it is as simple as
public void saveNewUser(...)
{
User user = new User();
// fill properties
Permission p = new Permission();
// fill properties
user.getPermissions().add(p);
session.save(user);
}
Update: the code above would be possible using a class structure like. the important part is the collection/map of permissions each user has per modul
public class Permission {
private boolean IsReadOnly;
private boolean IsModify;
private boolean IsFull;
}
public class Module {
private Integer id;
private String name;
}
public class User {
private Integer id;
private String name;
private String password;
private Map<Module, Permission> permissions;
}
and mapping
<class name="User">
...
<map name="permissions" cascade="all">
<key column="UserId"/>
<index-many-to-many column="ModuleId" class="Module"/>
<composite-element class="Permission">
<property name="IsReadOnly"/>
<property name="IsModify"/>
<property name="IsFull"/>
</composite-element>
</map>