NHibernate PreUpdate事件侦听器不会持久更改 [英] NHibernate PreUpdate event listener not persisting changes

问题描述

我们有以下PreUpdate事件监听器：

  public bool OnPreUpdate（PreUpdateEvent @event）
 {
 BaseBO entity = @ event.Entity as BaseBO; 
 if（entity == null）
 return false; 
 
 var operatorName =OpName; 
 var utcDateTime = DateTime.Now.ToUniversalTime（）; 
 
 Set（@ event.Persister，@ event.State，ModifiedBy，Fred& Barney）; 
 Set（@ event.Persister，@ event.State，ModifiedDate，utcDateTime）; 
 
 entity.ModifiedBy =fred& barney; 
 entity.ModifiedDate = utcDateTime; 
 
返回false; 
} 
 
 private void Set（IEntityPersister persister，object [] state，string propertyName，object value）
 {
 var index = Array.IndexOf（persister.PropertyNames ，propertyName）; 
 if（index == -1）
 return; 
 state [index] = value; 
} 
  

return语句上的断点表示旧/新的状态值和实体属性已更新为预期值。

但是，运行Sql profiler会显示ModifiedDate / ModifiedBy值未更新。

如果我更新持久性代码并手动设置ModifiedDate，Profiler显示正在更新的ModifiedDate。

我们大多数实体的映射文件是：

 < property name =ModifiedDateinsert =false/>任何关于什么可以阻止事件监听器设置的值被传播到数据库的想法？
解决方案
你的表格映射有动态更新吗？ NHibernate中有一个错误，可以防止PreUpdate和PreInsert使用动态更新。请参阅 http://www.mail-archive.com/nhusers@googlegroups。 com / msg13624.html  
 
We have the following PreUpdate event listener:
public bool OnPreUpdate(PreUpdateEvent @event)
        {
            BaseBO entity = @event.Entity as BaseBO;
            if (entity == null)
                return false;

            var operatorName = "OpName";
            var utcDateTime = DateTime.Now.ToUniversalTime();

            Set(@event.Persister, @event.State, "ModifiedBy", "Fred & Barney");
            Set(@event.Persister, @event.State, "ModifiedDate", utcDateTime);

            entity.ModifiedBy = "fred & barney";
            entity.ModifiedDate = utcDateTime;

            return false;
        }

private void Set(IEntityPersister persister, object[] state, string propertyName, object value)
        {
            var index = Array.IndexOf(persister.PropertyNames, propertyName);
            if (index == -1)
                return;
            state[index] = value;
        }
Breakpoints on return statement indicate that the old / new state values and the entity properties have been updated to the expected values. 

However running Sql profiler shows that the ModifiedDate / ModifiedBy values are not updated.

If I update the persistence code and set the ModifiedDate manually, Profiler shows the ModifiedDate being updated.

The mapping file for the majority of our entities is:
<property name="ModifiedDate" insert="false" />
Any thoughts as to what could be preventing the values set by the event listener from being propogated to the database?
解决方案
Do you have dynamic-update in your table mappings? There's a "bug" in NHibernate that prevents PreUpdate and PreInsert from working with dynamic-update. See http://www.mail-archive.com/[e-mail]/msg13624.html

                        
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