orm nhibernate

, the code is as follows:Public abstract class Entity:entity{}Analysis principleNHibernate need to rely on the Equals method for equality judgment. The method is defined by default in the System.Object class, which uses referential equality judgments in reference types (that is, the same memory address is considered equal), that is, X.equals (y) is true only if X and Y point to the same object instance. This default behavior works well in most cases.To support lazy loading,

= Sessionfactory.opensession (); session. Flushmode = Flushmode.commit; Currentsessioncontext.bind (session); } return this;} #endregion #region IDisposable members public void Dispose () {var session = Currentsessioncontext.unbind (sessionfactory); var transaction = session. Transaction; if (transaction. IsActive) {transaction. Dispose (); } session. Dispose (); } #endregion} All of that ' s required are this in the Hibernate config section:(for Web Apps):name= "Current_session_c

= Int. Parse (Pagecriteria.setprojection (Projections.rowcount ()). Uniqueresult (). ToString ());After the totals query is executed, the collation is created for the previous Icriteria objectif (ISASC)C.addorder (New Order (), true);ElseC.addorder (new Order, false));After you create the collation, perform a data queryPageinfo.results = C.setfirstresult (startnum). Setmaxresults (pageinfo.pagesize). List (). ToList ();return pageInfo;}Note: PageInfo is a paging class///Results///Public List Re

Question 1:An exception of type "Nhibernate.typemismatchexception" occurs in NHibernate.dll, but is not processed in user codeAdditional information: Provided ID of the wrong type. Expected:System.Int64, got System.Int32When the Query method ID data type is long, the session. GetSolution. DECLARE long Selectid = 1 in advance, session. GetThe set of problems encountered by NHibernate is continuously updated.

Reprint: http://www.cnblogs.com/tenghoo/archive/2011/02/14/1954393.html PublicIliststringUseridintPageIndex,intPageSize, out Longcount) { using(ISession _session =Base. GetSession ()) {varHQL ="Select COUNT (*) from Orders where Userid=:userid"; IQuery Query=_session. CreateQuery (HQL); Query. SetString ("userid", UserID); Objectobj =query. Uniqueresult (); Long. TryParse (obj. ToString (), outcount); varList = fromPinch_session. Linq()

be seen in the definition of the merge interface, the interface is to copy the given entity to a persisted entity under the session (not knowing if the understanding is correct).Therefore, you can avoid this exception by calling the merge () method.Ps:By looking up the data, the Session.evict () interface can purge persisted entities from the session's cache, and in the context of the problem, by first calling the method, clearing the original persisted entity, then update (), and no duplicate

Use the nhibernate of the dynamic Soft code generator to generate a template, generate an "XML mapping template", always prompt could not compile the mapping document problem.All kinds of search, just did not find the problem.Then, when commissioning, turn all the interrupts out.find bool This type does not know, and then look at Codesmith template, inside the MS SQL Server bit type is converted to a Boolean,Decisively convert the bool type in the cor

HQL operator QBC operator Meaning = Restrictions.eq () equals equal Restrictions.ne () Not equal to not equal > RESTRICTIONS.GT () Greater than greater than >= Restrictions.ge () Greater than or equal to greater than or equal Restrictions.lt () Less than Restrictions.le () Less than or equal to than or equal Is null Restri

; Property Name = "Expiration" > 120 Property > Nhib.pdf. Caches. syscache. syscacheprovider, nhib.pdf. Caches. syscache can also be replaced with nhib.pdf. caches.Prevalence. Prevalencecacheprovider, nhib.pdf. Caches. Prevalence, representing the cache implementation class. In the bin directory, there are two DLLNhib.pdf. Caches. syscache. dll, nhib.pdf. Caches. Prevalence. dll, which one to copy to the applicationProgramUnder the bin directoryExpiration indicates the cac

Entity class:Using system;Using system. collections; Namespace antu. Test {# Region Flow /// /// The Nhibernate ing Class flow of the database table "st_flow./// Public class Flow{# Region variable Private flowkey _ flowkey;Private string _ sname;Private string _ ename;Private bool _ isback;Private float _ CX;Private float _ Cy;Private bool _ AC; # Endregion # Region Constructor /// /// Initialize a new instance of the /// Public flow (){} /// /// Ini

Starting from 2.1, nhib.pdf supports the new entitymode. Map feature to help you design models persistently without writing any domain entities. Because a colleague is studying this, I am also concerned about it. Li yongjing's blog details this feature Http://www.cnblogs.com/lyj/archive/2009/08/05/nhibernate-new-features-entitymode-map.html In nh2.1, there are three entitymodes:PocoDynamic-map (also called dictionary XML (not implemented) I wa

Http://programcsharp.com/blog/archive/2009/08/19/ibatis-nhibernate-mosso-medium-trust-partial-trust-environments.aspx Using shared hosting providers (in this case mosso) run your asp. net Applications in a medium trust or modified medium trust environment to reduce security risks. this causes issues with certain techniques and components that require permissions removed by medium trust. One of the biggest issues other than the actual restriction of

Nhibernate Series II sessionstoragebase Using nhib.pdf;Using system. Web;Using system. collections;Namespace com. zfrong. Arch. Common. Data. NH. session. Storage{Internal abstract class sessionstoragebase: isessionstorage{Protected static object locker = new object ();Protected static isessionstorage instance; Const string sessionkeyname = "session _"; Const string sessionfactorykeyname = "sessionfactory _";Protected abstract idictionary items{Get;

We can see that session and sessionfactory are the core parts of Nhibernate. Sessionfactory maintains connections to the persistent mechanism (database) and manages them. It also saves the ing information of all persistent objects.Sessionfactory is created by configuration. buildsessionfactory. This object generally uses the singleton mode. Session is used to persist objects and support database transactions. In addition, session also provides pow

A session foreach(varIteminchFavoriteid) { if(!string. IsNullOrEmpty (item)) {varFavorite = _session. Get(Guid.parse (item)); if(Favorite! =NULL) { //Delete a resource varFavoritelist = _session. Createcriteria"ResId", Favorite. RESID)). List (); if(Favoritelist! =NULL Favoritelist.count 1) {_session. Delete (Newfavoriteresourceinfo {ResId =favorite.

NHibernate This framework has been used for more than a year, relative to a great advantage, you can save a lot of time to write SQL.But if you want to use it to do statistics, then a little sorry, can only be written manually. It's built-in stuff that's hard to meet your needs.That's the problem I'm having. I need to count the number of each group in a table that is grouped according to a field. This SQL is simpleThe table name is replaced with the o

1,ado.net belongs to the traditional data access tool, the development of the time we need to manually write operation of the database operations, of course, the performance is needless to say. 2,nhibernate is ported from Java to the. NET platform, writing mappings requires writing XML files manually, and then building the database, Hibernate Advantages: (1) object/relational database mapping (Basic O/R Mapping) It only needs to manipulate objects, s

To record the problems encountered in the process of learning NHibernate 1. Could not instantiate dialect class NHibernate.Dialect.OracleDialect "Could not load type NHibernate.Dialect.OracleDialect. Possible cause:no assembly name specified " Found a lot of solutions can not, the final method When using Oracle databases in the NHibernate2.1.0 version, it is necessary to note that Oracle versions are written in the configuration file 2. Error m

Directly with a download resource to change, do not build from scratch; see relevant information on the web; 1 after the project is decompressed and the referenced DLL 2 Structure of the project 3 run a bit The following figure error occurred; Look at the details of the error again; SQL Server is not started because SQL Server is 4 started The express version of this machine; its connection string is hc093\sqlexpress,hc093 is a computer name; it differs from a non-express version; Creat

The content of this section Associated query Ingestion One-to-many correlation query 1. Native SQL Association Query 2.HQL Correlation Query 3.Criteria API Association Query Conclusion Associated query IngestionThere are three types of queries available in NHibernate: NHibernate Query Language (hql,nhibernate que