nhibernate 审计更新事件

Question

以下代码适用于插入，但从未设置更新modifier ，有什么想法吗？

预更新代码正在运行并将 state 和实体值正确设置为所需值。 但是查看生成的 sql 时 nhibernate 不包括更新查询中的字段。

/// <summary> Updates auditable objects </summary>
public class AuditEventListener : IPreInsertEventListener, IPreUpdateEventListener
{
    private ISecurityManager securityManager;

    public bool OnPreInsert( PreInsertEvent args )
    {
        var auditable = args.Entity as IAuditable;
        if (auditable != null) {

            Set( x => auditable.Creator, args.Persister, auditable, args.State, SecurityManager.Identity );
            Set( x => auditable.DateAdded, args.Persister, auditable, args.State, Clock.Now );
        }
        return false;
    }

    public bool OnPreUpdate( PreUpdateEvent args )
    {
        var auditable = args.Entity as IAuditable;
        if (auditable != null) {

            Set( x => auditable.Modifier, args.Persister, auditable, args.State, SecurityManager.Identity );
            //Set( x => auditable.DateModified, args.Persister, auditable, args.State, Clock.Now );
        }
        return false;
    }


    /// <summary> Type safe method to update sate and entity </summary>
    private void Set<T, U>( Expression<Func<U, T>> expression, IEntityPersister persister, U instance, object[] state, T value )
    {
        var member = expression.Body as MemberExpression;
        if (member != null) {

            var index = Array.IndexOf( persister.PropertyNames, member.Member.Name );
            if (index == -1) {
                return;
            }
            state[index] = value;

            var property = (member.Member as PropertyInfo);
            if (property != null) {
                property.SetValue( instance, value, null );
            }
        }
    }

    ISecurityManager SecurityManager
    {
        get { /* From IoC */ }
    }

}

Answer 1

编辑1：这个答案有所改进
编辑2：看来在这个问题的真正cuase是动态更新设置为true 这里找到不过这个解决方案仍然为我工作。

在先前调用的OnFlushDirty函数中更新它们时，将保存更改。

public override bool OnFlushDirty( object entity, object id, object[] currentState, object[] previousState, string[] propertyNames, NHibernate.Type.IType[] types )
{
    bool result = false;

    if (entity is IAuditable) {
        var auditable = (IAuditable)entity;

        Set( x => auditable.Modifier, propertyNames, auditable, currentState, SecurityManager.Identity );
        //Set( x => auditable.DateModified, args.Persister, auditable, args.State, TwentyClock.Now );

        result = true;
    }

    return result;
}

Answer 2

对我们来说，这是因为 NHibernate 将具有相同列名的表连接在一起； 所以我们会更新该列名的第一个实例，但不会更新后续的实例。 我们这样做了：

    protected void Set(IEntityPersister persister, object[] state, string propertyName, object value)
    {
        var index = Array.IndexOf(persister.PropertyNames, propertyName);
        while (index > -1)
        {
            state[index] = value;
            index = Array.IndexOf(persister.PropertyNames, propertyName, index + 1);
        }
    }