I've spent a couple of days researching this on Google, StackOverflow and reading various blogs on this but to no avail. My question is if a collection is updated within an entity then would this cause NHibernate to update all properties in the entity of the modified collections? In this case I've added a user to a role and once I call session.SaveOrUpdate then 2 updates occur (NHibernate updates user and role) then the INSERT occurs. Is this the default behavior? I've tried to do the following to see if I can get NHibernate to just issue the INSERT statement:
- Ran a Ghostbuster test on these entities based on code by Jason Dentler and Fabio Maulo but everything comes back ok and there are no dirty properties.
- I made properties nullable that are defined as null in the database.
- Set Inverse true on one of the entites.
Any help or insight is much appreciated.
Here are the mapping and class files.
<?xml version="1.0" encoding="utf-8"?>
<hibernate-mapping xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" namespace="Custom.NHibernateLib.Model" assembly="Custom.NHibernateLib" xmlns="urn:nhibernate-mapping-2.2">
<class name="Users">
<id name="UserId" type="Int64">
<generator class="hilo" />
</id>
<property name="ApplicationName" type="String" length="50" />
<property name="Username" type="String" length="15" />
<property name="Email" type="String" length="15" />
<property name="Password" type="String" length="50" />
<property name="PasswordSalt" type="String" length="128" />
<property name="PasswordQuestion" type="String" length="15" />
<property name="PasswordAnswer" type="String" length="50" />
<property name="IsApproved" type="YesNo" />
<property name="LastActivityDate" type="DateTime" />
<property name="LastLoginDate" type="DateTime" />
<property name="LastPasswordChangedDate" type="DateTime" />
<property name="CreationDate" type="DateTime" />
<property name="IsOnline" type="YesNo" />
<property name="IsAnonymous" type="YesNo" />
<property name="IsLockedOut" type="YesNo" />
<property name="LastLockedOutDate" type="DateTime" />
<property name="FailedPasswordAttemptCount" type="Int32" />
<property name="FailedPasswordAttemptWindowStart" type="DateTime" />
<property name="FailedPasswordAnswerAttemptCount" type="Int32" />
<property name="FailedPasswordAnswerAttemptWindowStart" type="DateTime" />
<property name="Comment" type="String" length="4001" />
<bag name="RoleList" table="UserRoles" lazy="true" cascade="save-update, persist" batch-size="10">
<key column="UserId" not-null="true" />
<many-to-many class="Roles" foreign-key="FK_Roles_UserRoles_RoleId">
<column name="RoleId" not-null="true" />
</many-to-many>
</bag>
<one-to-one name="Profiles" />
</class>
</hibernate-mapping>
<?xml version="1.0" encoding="utf-8"?>
<hibernate-mapping xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" namespace="Custom.NHibernateLib.Model" assembly="Custom.NHibernateLib" xmlns="urn:nhibernate-mapping-2.2">
<class name="Roles">
<id name="RoleId" type="Int64">
<generator class="hilo" />
</id>
<property name="ApplicationName" type="String" length="50" />
<property name="RoleName" type="String" length="50" />
<bag name="UserList" table="UserRoles" lazy="true" inverse="true" cascade="save-update, persist" batch-size="10">
<key column="RoleId" not-null="true" />
<many-to-many class="Users" foreign-key="FK_User_UserRoles_UserId">
<column name="UserId" not-null="true" />
</many-to-many>
</bag>
</class>
</hibernate-mapping>
Here are the class files:
using System;
using System.Collections.Generic;
namespace Custom.NHibernateLib.Model
{
public class Users : Entity
{
public Users (){}
public virtual long UserId { get; set; }
public virtual string ApplicationName { get; set; }
public virtual string Username { get; set; }
public virtual string Email { get; set; }
public virtual string Password{ get; set; }
public virtual string PasswordSalt { get; set; }
public virtual string PasswordQuestion { get; set; }
public virtual string PasswordAnswer { get; set; }
public virtual bool? IsApproved { get; set; }
public virtual DateTime? LastActivityDate { get; set; }
public virtual DateTime? LastLoginDate { get; set; }
public virtual DateTime? LastPasswordChangedDate { get; set; }
public virtual DateTime? CreationDate { get; set; }
public virtual bool? IsOnline { get; set; }
public virtual bool? IsAnonymous { get; set; }
public virtual bool? IsLockedOut { get; set; }
public virtual DateTime? LastLockedOutDate { get; set; }
public virtual int? FailedPasswordAttemptCount { get; set; }
public virtual DateTime? FailedPasswordAttemptWindowStart { get; set; }
public virtual int? FailedPasswordAnswerAttemptCount { get; set; }
public virtual DateTime? FailedPasswordAnswerAttemptWindowStart { get; set; }
public virtual string Comment { get; set; }
public virtual IList<Roles> RoleList { get; set; }
public virtual Profiles Profiles { get; set; }
}
}
using System;
using System.Collections.Generic;
namespace Custom.NHibernateLib.Model
{
public class Roles : Entity
{
public Roles(){}
public virtual long RoleId { get; set; }
public virtual string ApplicationName { get; set; }
public virtual string RoleName { get; set; }
public virtual IList<Users> UserList { get; set; }
}
}
Adding the user and the role to their respective collections.
usr.RoleList.Add(role);
role.UserList.Add(usr);
When this is called session.SaveOrUpdate(role) then this occurs in NHibernate.
-- statement #1
UPDATE Users...WHERE UserId = 32768
-- statement #2
UPDATE Roles...WHERE RoleId = 65536
-- statement #3
INSERT INTO UserRoles...