fluorine dating chronometric dating technique - Nhibernate hasmany not updating

A session is created by an ; that is create one session for each user request.

nhibernate hasmany not updating-85

For example, even though the Ingredient Use entity is not referencing the Recipe, NHibernate will expect a column called “Recipe_id” on the Ingredient Use table in the database that it can use to maintain the relationship between the two entities.

I would not recommend that you use the NHibernate "bag" mapping option for a many-to-many association, for example: Never mind the strange domain, it is for a upcoming NHibernate presentation and I was too bored with the normal Order Order Lines example domains.

Instead, as the aforementioned specifies, the INSERTs are being executed _before_ the DELETEs.

The problem with this is that I'm trying to insert objects that already existed before the DELETE, and when the INSERT is executed before the DELETE, this causes a PK constraint violation.

The main interface used to manipulate entities is ISession Factory for each database (which is generally created at the initialization of the application as it is the case here).

It implies that NHibernate is aware of this class and can manipulate it.azure book business intelligence c# database excel gotcha how to mongodb nosql performance security sql sql advent 2012 sql friday sql server sql server 2000 sql server 2005 sql server 2008 sql server 2008 r2 sql server 2012 ssis ssms ssrs syndicated t-sql tip unit testing In order to simplify saving some entities, I recently changed some mappings in my application to use the inverse attribute.In less cryptic terms, this means that the collection item is responsible for maintaining the relationship to the collection owner. all collection element deletions, updates and insertions 5. all entity deletions, in the same order the corresponding objects were deleted using Session.delete() My setting (the following are pseudocode): I have a persister Object A that have a collection c In my code I do the following in order: 1. I have set the necessary cascading attributes on A.c (I've tried both "all-delete-orpans" and "all"). update(A) That is, I clear the collection and then adds an object to the collection.One of the nicest thing with NHibernate is that it let you concentrate on your problem domain instead of doing low-level plumbing of saving your table(s) And this is your ever-efficient and succint data component in action: Everything are pretty much standard routine (tagging Data Contract, Known Type, Data Member attributes) to adhere to when you need to transport your POCO across the wire, those attributes has no bearing on NHibernate. This can be done by selecting Configure Service Reference...; this is under the Service References of your project To visualize the sample entity relationships we are persisting, here's the screenshot: create table question (question_id int4 not null, the_question varchar(255) not null, poster varchar(255) not null, primary key (question_id)); create table question_comment (question_comment_id int4 not null, the_question_comment varchar(255) not null, poster varchar(255) not null, question_id int4, primary key (question_comment_id)); create table answer (answer_id int4 not null, the_answer varchar(255) not null, poster varchar(255) not null, question_id int4, primary key (answer_id)); create table answer_comment (answer_comment_id int4 not null, the_answer_comment varchar(255) not null, poster varchar(255) not null, answer_id int4 not null, primary key (answer_comment_id)); alter table question_comment add constraint FK83AC3D002500E3C7 foreign key (question_id) references question; alter table answer add constraint FK77FA76182500E3C7 foreign key (question_id) references question; alter table answer_comment add constraint FKD5BEEC96136C8DAF foreign key (answer_id) references answer; create sequence question_seq; create sequence question_comment_seq; create sequence answer_seq; create sequence answer_comment_seq create table question (question_id INT IDENTITY NOT NULL, the_question NVARCHAR(255) not null, poster NVARCHAR(255) not null, primary key (question_id)); create table question_comment (question_comment_id INT IDENTITY NOT NULL, the_question_comment NVARCHAR(255) not null, poster NVARCHAR(255) not null, question_id INT null, primary key (question_comment_id)); create table answer (answer_id INT IDENTITY NOT NULL, the_answer NVARCHAR(255) not null, poster NVARCHAR(255) not null, question_id INT null, primary key (answer_id)); create table answer_comment (answer_comment_id INT IDENTITY NOT NULL, the_answer_comment NVARCHAR(255) not null, poster NVARCHAR(255) not null, answer_id INT not null, primary key (answer_comment_id)); alter table question_comment add constraint FK83AC3D002500E3C7 foreign key (question_id) references question; alter table answer add constraint FK77FA76182500E3C7 foreign key (question_id) references question; alter table answer_comment add constraint FKD5BEEC96136C8DAF foreign key (answer_id) references answer Download proof of concept for NHibernate WCF An aside, now I feel dirty I handcrafted Sql Data Adapter, Command, Parameters etc on my projects before.

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