orm nhibernate

1. New ProjectBusiness: Logic ClassesData: Database operation and NHibernate helper classesDomain: Data entities and database mapping files2. Download NHibernate using NuGetDatabase configuration file under Folder Packages\nhibernate.4.1.1.4000\configurationtemplatesThe SQL Server database is used here, so copy MSSQL.cfg.xml to the

Last episode we're talking about building nhibernate and vs using environments to determine if the environment is compatible with the problem we'll start with the NHibernate:1.0 references　Testnhibernate.data layer References Iesi.Collections.dll, NHibernate.dll, TestNHibernate.Domain.dllTestnhibernate.domain layer References Iesi.Collections.dll, NHibernate.dllThe Testnhibernate.text layer references NHibe

Nhibernate--save Method:CustomerService.cs1 Public voidSave (Customer customer)2 {3ISession session =_sessionmanager.getsession ();4ITransaction transaction =session. BeginTransaction ();5 6 Try7 {8 session. Save (customer);9 transaction.commit ();Ten } One Catch(Exception) A { - transaction. Rollback (); - Throw; the } - finally -

NHibernate has two types of configuration files, one is the database connection profile (typically written to the program configuration file), and the other is the data table and entity mapping File (entity class . Hbm.xml)Open source framework fluent NHibernate, with it, there is no need to write the entity XML configuration file, it is a maping class to correlate the data table, after the project is gener

1. IntroductionLao Tan in the interview of developers, in order to examine their database development ability, often sacrificed my magic weapon, is the University database tutorial in a model: Students choose Class. This pattern is like this:In this mode, students (Student) and courses (Course) are entities, each with a primary key ID. Exam results (score) are a many-to-many relationship between students and the curriculum.Based on this model, for the novice, can make some simple query requireme

The contents of this section Introduced Object state Object state Transitions Conclusion Introduced Manipulating the database using objects in the process of running the program inevitably results in a series of instance objects of the persisted class. These objects may be just created and ready to be stored, or may be queried from the database, in order to differentiate between these objects, depending on the state of the object and the current session, we can divide the object into three

One, the NHibernate configuration supports the properties Property nameUse dialectSet dialect class name for NHibernate-allows nhibernate to generate optimized SQL for a particular relational database Available values: full.classname.of.Dialect, Assembly Default_schemaIn the generated SQL, attach the given schema/tablespace to the table name of the non-fully qual

First, set foreign keyIn NHibernate, the typical elements used to map the collection class are We go back to the previous one, the set of mappings based on a pair of multiple queries. For collection types:iset Listperson {get; Set }The NHibernate configuration file corresponds to the following: So what are the uses of 　　1.The objects in the IsetThere are no classes in. NET that correspond to 　　2.The col

ORM Framework Presumably everyone is familiar with, that is, object-relational mapping (English: Relation Mapping, abbreviated ORM, or O/RM, or O/R Mapping), is a program technology, Used to implement transformations between data in different types of systems in an object-oriented programming language.In effect, it actually creates a "virtual object database" that can be used in a programming language. When

First of all, of course, install the memcache server side.Then the configuration process, only two questions.1, nhibernate to be consistent with the Nhibernate.cache version. Otherwise, NHibernate.Caches.MemCache.MemCacheProvider cannot be instantiated.2, to reference log4net, otherwise Memcached.ClientLibrary.SockIOPool cannot be instantiated.App. Config:XML version= "1.0"?>Configuration>configsections>Configuring Custom Memcache Nodes-SectionName= "

Previously, we used to generate database tables through the powerdesigner Object Oriented Model, and then generate the nhibernate Object class and ing files through the code generator. It is not very straightforward. With the built-in functions of powerdesigner 15, you can generate the data access layer of nhib.pdf. However, it is not very good to use it in the actual environment by default. You can change the template to generate what you need. The f

1. Using transactions in NHibernate, the main code is as follows: #region Transaction Public ilist2. Using n NHibernate for CRUD operations #region Add, delete, update object public int Add (Customer model) { int id = (int) _session. Save (model); _session. Flush (); return ID; } public void Delete (Customer model) {

Modelmapper OverviewThe NHibernate3.2 version integrates Mapping-by-code (code mapping), and its design idea stems from conform, which is based on the "loquacious" pattern, not the "Fluent-interface". Under the NHibernate.Mapping.ByCode namespace.mapping-by-code (code mapping) differs from other mappings, Mapping-by-code is to manually configure entity mappings, compile mappings and convert to hbmmapping object, call The void adddeserializedmapping (hbmmapping mappingdocument, String documentf

Icriteria = _ sessionfactory. getcurrentsession (). createcriteria (typeof (cardType ));If (cardType. cardtypeid! = NULL){Icriteria. Add (restrictions. Like ("cardtypename", "12% "));}If (cardType. cardtypeid! = NULL){Icriteria. Add (restrictions. Like ("cardtypename", "12% "));}If (cardType. cardtypeid! = NULL){Icriteria. Add (restrictions. Like ("cardtypename", "12% "));}If (cardType. cardtypeid! = NULL){Icriteria. Add (restrictions. Like ("cardtypename", "12% "));}//// String username = "name

Overview: When session. Save (TNP); is run, this "unknown entity class: testcleansnow. testnhibernateperson" exception occurs. The testing file testnhibernateperson. HBM. XML is as follows: Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> XML version = "1.0" encoding = "UTF-8" ?> Hibernate-Mapping Xmlns = "Urn: nhibernate-mapping-2.2" Assembly = "Testcleansnow" Namespace =

This articleHttp://ayende.com/blog/3988/nhibernate-the-difference-between-get-load-and-querying-by-idOne of the more common mistakes that I see people doing with NHibernate isRelated to how they is loading entities by the primary key. This isbecause there is important differences between the three options. The most common mistake . is usingA query to the load by ID.inchparticular whenusingLinq forNHibernate

A colleague suddenly came to me, said he encountered a problem, in the call NHibernate update data when the error, said there is data row lock. Look at the code, no problem. It is not a problem to insert the database directly in the Pl/sql developer. There should be no transaction not committed, the table is locked. But we are low level, to prevent in case, or restart the database. After a hard reboot, try again, the problem is still, several times

easier for you to develop and maintain distributed programs. An application developed based on the nbear. IOC module can be a real load balancing distributed program without re-compilation. 3. for desktop applications, nbear is also a little learning curve (how many people will carefully study hibernate's reference manual to write a small calendar program ?) And practical and efficient data persistence solutions. 4. Along with nbearv3's comprehensive ORM