Nhibernate hasmany not updating

This is the most confusing keyword in Hibernate, at least i took quite a long time to understand it. The “inverse” keyword is always declare in one-to-many and many-to-many relationship (many-to-one doesn’t has inverse keyword), it means which side is responsible to take care of the relationship. session.begin Transaction(); Stock stock = (Stock)session.get(Stock.class, 57); Stock Daily Record stock Daily Records = new Stock Daily Record(); stock Daily Price Open(new Float("1.2")); stock Daily Price Close(new Float("1.1")); stock Daily Price Change(new Float("10.0")); stock Daily Volume(3000000L); stock Daily Date(new Date()); stock Daily Stock(stock); Stock Daily Records().add(stock Daily Records); session.save(stock Daily Records); session.update(stock); Transaction().commit(); Hibernate: insert into mkyongdb.stock_daily_record (STOCK_ID, PRICE_OPEN, PRICE_CLOSE, PRICE_CHANGE, VOLUME, DATE) values (? It turns out that hibernate calls your set Roles method AND it wants its special collection class installed here, and won't accept your collection class.This had me stumped for a LONG time, despite reading all the warnings about not assigning to your collection in your set method.works if the parent Entity is detached and again if we update it.But if the entity is not detached from per context, (ie find and update operations are in the same transaction) the below mthod works. @ovdsrn Sorry this isn't my answer, I just sorted out the formatting of the answer, the original author (kmmanu) might be able to help you out (or alt you might want to start a new question if your scenario is different to the original question asked here) Good luck This works well, but not so good when the children are contained in a nested hibernate component and the component is made null in it's Entity. This is because the owner of the children is the root Entity and not the component that is made null...I have a class named Receipt which contains a list with many objects named Receipt Items.

With the relationship we created, it was always intended that the children would be added through their own repo. The integration test we had was going through a complete lifecycle of the entity via REST calls so the transactions would close between requests.session.begin Transaction(); Stock stock = new Stock(); Stock Code("7052"); Stock Name("PADINI"); Stock Daily Record stock Daily Records = new Stock Daily Record(); stock Daily Price Open(new Float("1.2")); stock Daily Price Close(new Float("1.1")); stock Daily Price Change(new Float("10.0")); stock Daily Volume(3000000L); stock Daily Date(new Date()); stock Daily Stock(stock); Stock Daily Records().add(stock Daily Records); session.save(stock); session.save(stock Daily Records); Transaction().commit(); Hibernate: insert into mkyongdb.stock (STOCK_CODE, STOCK_NAME) values (? ) Hibernate: insert into mkyongdb.stock_daily_record (STOCK_ID, PRICE_OPEN, PRICE_CLOSE, PRICE_CHANGE, VOLUME, DATE) values (? At last, try to remember the inverse=”true” mean this is the relationship owner to handle the relationship.So I changed to this: So that on the first call, hibernate installs its special class, and on subsequent calls you can use the method yourself without wrecking everything. " Good question, I think I was working under the assumption that hibernate would be less likely to see this as a database update if you didn't remove the items before adding them again. When you set orphan Removal=true and you creare a record where this collections is null, you also get this error. When you create A where B = null, this issue is triggerd.If you want to use your class as a bean, you probably need a working setter, and this at least seems to work. Your solution to initialize and make it final seems the best.

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