Question

以下代码适用于插入但更新modifier从未设置，任何想法为什么？

正在运行预更新代码，并将状态和实体值正确设置为所需的值。但是，在查看生成的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：此答案已得到改善编辑2：问题的真正原因是动态更新设置为真为found here但是此解决方案仍适用于我。

在先前调用的OnFlushDirty函数中更新它们时会保存更改。

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;
}

nhibernate审核更新事件

1 个答案: