orm nhibernate

I. BACKGROUNDWe are now doing projects that use NHibernate to implement the data access layer.When accessing data, some database tables are deterministic: There are explicit table names, field names. This is done in the usual way: establish a database table-to-class mapping, and use HQL to read and write the database.But there is data access, the database tables that are targeted are indeterminate, and in the run phase, determine which fields of the d

nhibernate. Here we use it to depend on the object .Some of the properties of the,The following two images show the component and dynamic component two node mapping properties:Look at these mapping properties: access ( Default property): NHibernate is used to access the properties of the policy class ( Default property type by Reflection): The name of the component (sub) class Insert: W

I. BACKGROUNDWe are now doing projects that use NHibernate to implement data access layers.When visiting data, some database tables are deterministic: There are clear table names, field names. This is how you can: establish a database table-to-class mapping. Use HQL to read and write databases.However, there are data access questions about which database tables are not deterministic and which fields of the database tables are identified during the exe

The content of this section Transaction overview 1. New Object "Test submitted successfully" "Test failed Rollback" 2. Deleting objects 3. Updating objects 4. Save the updated object Conclusion In the previous article we introduced the INSERT, Update, delete operation in NHibernate, which we look at in NHibernate. You can commit or roll back your acti

The contents of this section The Query method in NHibernate Conditions query (criteria query) 1. Create a Icriteria instance 2. Result set limits 3. Result set Ordering 4. Some notes Based on the sample query (query by Example) Example analysis Conclusion In the previous section, we introduced one of the NHibernate query languages: The NHibernate Query

NHibernate official website for Http://nhibernate.info. Official website of documentation, help document the NHibernate Reference (HTML, single page HTML, PDF, CHM), Case tutorial Tutorial:your first NHibernate base D application, these two documents are my main basis for writing this article.NHibernate is an object/relational database mapping tool for the. NET e

What kind of ORM framework do we need following the last ORM?10 examples of ORM framework tests have been sorted out in no particular order Crl Ef Pdf XCODE NHibernate Mysoft Moon Cyq Dapper Ibatisnet In the above frame, the style is different, most of the semi-object,

The previous article discussed in detail the use of the basic mapping of fluentnhibernate, its basic usage is the same as NHibernate, first to create a database link configuration file, then write the table mapping, and finally write the unit Test to see if the module mapping executed successfully. Fluentnhibernate the replacement of NHibernate is not only because of the mapping configuration file optimizat

Series Articles[Nhibernate] Architecture[NHibernate] Isessionfactory Configuration[NHibernate] Persistence class (persistent Classes)[NHibernate] O/R Mapping Basics[NHibernate] Collection Class (collections) mappings[NHibernate] A

Series Articles[Nhibernate] Architecture[NHibernate] Isessionfactory Configuration[NHibernate] Persistence class (persistent Classes)[NHibernate] O/R Mapping Basics[NHibernate] Collection Class (collections) mappings[NHibernate] A

NHibernate collection map in Depth (fifth) In 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 get; set;} The NHibernate configuration file corresponds to the following: SetName= "Listperson"Table= "Person"Generic= "true" Inv

First introduce the framework structure (this has a concept can be);Then we will introduce a very important concept (be sure to look good)!!This section provides an introduction to the NHibernate architecture, beginning with a look at the location of the framework in the application:Let's start with a simple diagram:As you can see, NHibernate is in the middle of applications and databases, does it work? As

NHibernate is a. Net based, The object persistence Class library for the relational database. It is the famous hibernate. NET version, NHibernate is used to persist your. NET objects into the underlying relational database. You don't have to write your own SQL statements to manipulate these objects at all. NH will do it for you. You only need to care about these objects in your code, NH generates SQL statem

The content of this section Many-to-many relationships are introduced Many-to-many mapping relationships Many-to-many correlation queries 1. Native SQL Association Query 2.HQL Correlation Query 3.Criteria API Association Query Conclusion Many-to-many relationships are introducedLet's look again at the data model established in the second article:In the diagram, I have clearly marked the relationship between tables, on two analysis of the "fo

nhibernate. Here we use it to depend on the object .Some of the properties of the,The following two images show the component and dynamic component two node mapping properties:Look at these mapping properties: Access (default property): NHibernate the policy used to access properties Class (the property type that is reflected by default): The name of the component (child) class Insert: Whe

In this paper, the dynamic soft three-layer structure and the "nhibernate three-layer structure" are simply compared. (1) Dynamic soft three-layer architecture Newly developed ASP.NET applications, the use of dynamic soft generated three-tier architecture, easy to use. is to change the trouble. For example, to add a query data method, first in the DAL layer to add the interface method, then to the Sqlserverdal layer to add implementation code, and t

Let's talk about this scenario where you use the 4-tier architecture based on Esframework for application development, you analyze the needs of users, and sort them into chunks, and consider each piece using a single functional plug-in. In these several plug-ins, there is a plug-in need to access a database, and only the plug-in needs to access the database, according to the "autonomous" nature of the plug-in, you do not want the data access in this plug-in to "spread" to the application (FS), b

Recently are in the use of NHibernate and database dealing, to tell the truth, I think nhibernate is better than ADO, but in some complex query nhibernate is not as good as ADO. No more nonsense, let's talk about performance optimizations for LINQ to NHibernate. 1th: It should be clear whether the current code is execu

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 on a model: Students choose classes. This pattern is this:In this model, students (Student) and courses (Course) are entities. There are primary key IDs, respectively. 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 quer

without a namespace. Fixed bug with SQL generated for an in clause that contains a class/subclass with a discriminator-value = "null ". Fixed potential threading problem with querytranslator. Modified logging in transaction to not generate as your messages. Modified how exceptions are rethrown so call stack of original exception is not lost. Moved nhib.pdf. Tasks and nhib.pdf. tool. hbm2net to the nhibernatecontrib package. Removed dbtype {Get;} f