orm nhibernate

start,end 1 ); Combine Programmability (Syntax support) Fault tolerance Development efficiency Correlation Query Support Degree Additional configuration Cache support Nhibernate LINQLAMBDA syntax High In In mapping requires configuration XML Support Entity Framework

also need to be considered, such as NHibernate and Nbear must first be configured to cache, simple values can not tolerateCodefirst Or DbfirstAlso mentioned above, EF7 forced the Codefirst model, the development concept to change, first business data, data is based on business implementation, ideallyWhat kind of business structure, should have what kind of data table structure, should not go to tube database what kind of, by the framework to deal wit

Http://www.cnblogs.com/lyj/archive/2008/11/28/1343418.htmlYou can define a named query in a mapping file The,Define a query named Selectcustomer in the Customer.hbm.xml mapping file because the cache mode is the default by querying all the Customer and enabling cache queries (described below)"true" cache-mode="normal"name= " Selectcustomer " > from CustomerWrite a method:[Test] Public voidnamedquerycachetest () {using(_session) {Console.WriteLine ("---> Use named queries for the first time");

will be accompanied by the creation and destruction of the session's life cycle;3. The session cache is an entity-level cache, which is used only when querying the object level, and does not use the first-level cache if you use HQL and SQL are query attribute levels! Remember!!!! 4. Understand the difference between get () and load () in the first level cacheUse the Isession.get () method to immediately save the object instance to the cache.Using the Isession.load () method only loads the ID of

The contents of this section What is concurrency control? Pessimistic concurrency control (pessimistic concurrency) Optimistic concurrency control (optimistic concurrency) NHibernate Support optimistic concurrency control Example analysis Conclusion What is concurrency control? When many people try to modify the data in the database at the same time, a control system must be implemented so that changes made by one person do not adversely affec

The contents of this section Introduced 1. Persistence class 2. Mapping file 3. Test Conclusion Introduced In database operations, in addition to table operations, as well as views, stored procedures, and other operations, this article and the next article to learn about these things. In this article we'll learn how to use views in nhibernate. First, we set up a database named Viewcustomer view, select CustomerID, Firstname, Lastname, OrderId,

= models. Book.objects.aggregate (Avg_pirce=avg (' price '), #Max_price=max (' price '), #min_price=min (' price ')) #print (ret) # ## Number of authors per book #ret = models. Book.objects.annotate (C=count (' author ')). VALUES (' title ', ' C ' ) #print (ret) # ## Count the prices of the cheapest books that each publisher buys #ret = models. Publisher.objects.annotate (min_price=min (' Books__price ')). VALUES (' name ', ' Min_price ') #print (ret) #count

If you have ever used NHibernate 2.0 or higher, you must have encountered the following error: NHibernate.InvalidProxyTypeException:The Following types May is used as proxies:NHibernateExamples.Entities.OrderLine:method get_unitprice should be ' public/protected virtual ' or ' protected internal VirtualNHibernateExamples.Entities.OrderLine:method set_unitprice should be ' public/protected virtual ' or ' protected internal VirtualGee, we forgot to mark

OverviewThere is a need to manage enterprise intranet information, including icons and links. Consider that the icon is not very large, so the picture is saved directly in the database.But with NHibernate, how do you map it?Table 5.5. Large Object Mapping Types NHibernate Type . NET Type Database Type Remarks Stringclob System.St

Turn from: http://www.dotnetjalps.com/2013/09/asp-net-mvc-nhibernate-crud-getting-started.html In this post we are going to learn how we can use the NHibernate in asp.net MVC application. What is NHibernate: Orms (Object relational Mapper) are quite popular this. ORM is a mechanism to map database entities to Class en

The. Net ORM Mapping Framework NHibernate, originally a Java thing, a herd of cow b roaring yards, transplanted to the. NET platform, is a very good ORM mapping framework,The story begins, ~_~!The bell of the work was ringing, and looked away from afar. Punch line, the long queue, Punch machine, "du" "Du" "du" ...Bear: Bald head strong, parcel data pushed past it

(The following is mainly used for their own life records, do not like to spray)From work to now also more than a year, but last Friday, the old shouted at me, asked me a sentence: "I'm going to let you help me find some information on the weekend, you know ORM?" ”At that time, I was directly stunned, because at that time I completely did not understand the ORM of the concepts of the concept of a few words (

Original address: Http://www.cnblogs.com/lukun/archive/2011/05/16/2047587.html It's a nice piece of writing. The memory of the Lost YouthSource: http://www.cnblogs.com/lukun/This article copyright to the author and blog Park, Welcome to reprint, but without the consent of the author must retain this paragraph of the statement, and in the article page obvious location to the original connection, if there is a problem, you can contact me through http://www.cnblogs.com/lukun/, thank you very much.