Hello can some pros with nhibernate give me example +implementation of Nhibernate session per conversation or unhaddins +implementation? +Or explain how to do that. +Best regards +Endiss
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+ I work with NHibernate to 4 years. Previously I worked with the "open-session-per-operation" antipattern. + The objects were always detached. So, to persist, I had to reattach +them or copy their values to attached objects. This causes many lines of + code and many "lazy initialization exeption". + +Recently, I studied the "Conversation pattern" and I did an implementation over the the "Spring.Net" infrastructure. The implementation was submitted to "jira.springsource" at the Issue SPRNET-1431 (Workaround for 'conversation scope' and "session-per-conversation"). + +I made no "sample application", but if you're interested I can do that. + +Hailton + +Supplementary Answer:+ +I prepared the sample application and posted in SPRNET-1431 Workaround for 'conversation scope' and "session-per-conversation" as the file "Spring.ConversationWA.example.7z". + +Below, I wrote explanations to clarify (or not) what I did. + +This "sample application" is a modification of +"Spring.Data.NHibernate.Northwind" contained in the version "1.3.0" of +"Spring.NET" to use Conversation. + Currently, the "Spring.Net" has no "conversation scope" nor implements + the concept of "Extended Persistence Context" ("session per +conversation strategy"). + +In this Sample Application the objective is demonstrate: + +
IMPORTANT: Never use a single conversation for the entire application
+ (with the same duration of the "HTTP Session"). Remember, NHibernate
+keeps a cache of all loaded objects, if the conversation is held for a
+long time this cache tends to grow indefinitely (the limit is the amount
+ of database records). That is, each conversation should be limited to a
+ subset of the application pages, and must be discarded at the end of
+interaction with this subset ( ADDITIONAL INFORMATION: The unit tests +("Spring.Northwind.IntegrationTests.2008") are not working. But there is + no problem because it is not related to the changes made to support +conversation, in fact they were already resulting in errors even before +that. + +List of changes in "Spring.Data.NHibernate.Northwind": + +
Hailton de Castro. +
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