Could describe in key-note style the cascade setup for the four tables? 1 & 3 have to be inserted first because of the foreign key relations ...
Thanks On 27 Sep., 16:47, "Ayende Rahien" <[EMAIL PROTECTED]> wrote: > 1) create a new session > 2) assuming that you setup cascades correctly, yes. > > On Sat, Sep 27, 2008 at 5:43 PM, antoschka <[EMAIL PROTECTED]> wrote: > > > Hi, > > > I have a normalized data model and 1to1 mapping NH-Mapping The basic > > idea. A person can be assigned to multiple nodes in a structure. In > > each node it has specific attributes. To give a snappshot of the > > physical datamodel > > 1. table "person" > > 2. table "assignPersonToNode" (ForeignKey to person & node) > > 3. table "node" > > 4. table "attributeInNode" (ForeignKey to node) > > I retrieve entities from the database and bind them over wrapper- > > classes to controls. In my case I retrieve persons and nodes bind them > > to a treeView and when the user selects a node in a structure > > Attributes are displayed in ListView. Actually it works really well > > but now I'm a kind of uncertain about the strategy to persist or > > dispose non-persistent entities. > > When I add a new entry e.g a new person to node in a structure, I > > actually need to add several new entities: > > - one entity in table 1-3 and depending on the number of attributes > > - one or more entities in table 4 > > > This also works well. in all tables i used an Id column which is > > defined in the mapping file as integer increment. > > The non-persistent entities have all id = 0 and now the application > > gives the user the option cancel and all new information shall be > > forgotten or to save the new entry. > > > For both options how you proceed with non-persistent entities: > > Option one: how can I efficiently get rid of all non-persistent > > entities (evict session?) > > Option two: how can I efficiently persist the non-persistent entities > > (would a flush be enough?) > > > Thanks for your guidance > > > antoschka > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "nhusers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/nhusers?hl=en -~----------~----~----~----~------~----~------~--~---
