In NHibernate how would I map an object to only retrieve it's children but ignore them when creating or updating?

Question

How would one map this object to only retrieve the collection below and ignore it totally when creating or updating the object to the db?

 <bag name="children"  table="tb_parent_child" lazy="false">
  <key column="parentID"/>
  <one-to-many class="Child"/>
</bag>

thanks

score 0 · Answer 1 · answered Apr 25 '09 at 11:06

0

Why not set lazy to true? Wouldn't that basically do it? And also maybe set cascade to 'none'?

answered Apr 25 '09 at 11:06

tsimon

score 0 · Answer 2 · answered Apr 25 '09 at 17:29

0

Setting the cascade attribute to none:

 <bag name="children"  table="tb_parent_child" lazy="false" cascade="none">
     <key column="parentID"/>
     <one-to-many class="Child"/>
 </bag>

should accomplish this. See this blog entry for a description of cascade options.

answered Apr 25 '09 at 17:29

Jamie Ide

Thanks, this still nulls out the parentID in the tb_parent_child table if send an object (with no children in the collection) to be updated – user17510 Apr 28 '09 at 02:54
You can try setting inverse=true. But why map the collection as a child of the parent at all? You can just retrieve the collection for yourself in code. – Jamie Ide Apr 28 '09 at 15:09

2 Answers2