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Could Not Complete The Mapping Document Hbm.xml

In the example below, when Hibernate encounters a property of class 9, it delegates the persistence strategy to the custom mapping type 8. Since we have turned cascading on for the Customer.Orders property, Customers' orders are saved automatically when Customers are saved. The demo app specifies the SQL Server 2005 dialect. In this case, we need to make several simple ADO.NET calls to clear the database. have a peek at this web-site

Here's some info from the trace: NHibernate.Cfg.Environment 2010-07-15 09:20:59,577 [7] INFO NHibernate.Cfg.Environment [(null)] - NHibernate 2.1.2.4000 (2.1.2.4000) 0.452436832055471 0.232383 NHibernate.Cfg.Environment 2010-07-15 09:20:59,718 [7] INFO NHibernate.Cfg.Environment [(null)] - Bytecode provider name : Debugging Mapping Documents Most debugging of mapping documents is done at run time. It is available in eBook now and it is scheduled to appear in paperback in December 2007. Hibernate XML MappingNow, create two Hibernate mapping files (hbm) - Stock.hbm.xml and StockDetail.hbm.xml.File : Stock.hbm.xml The attributes themselves are straightforward: The name attribute specifies the Computed properties do not have a column mapping of their own. imp source The object model has an Address class that has no corresponding table in the database, and the database has an OrderItems table that has no corresponding class.

Where To Go From Here We have really just scratched the surface of NHibernate. See the discussion of generated properties for more information.Note 2 is equivalent to 1. Try hard to fix your data model before using this [email protected] publicclassCustomerInventoryimplementsSerializable{ @Id @TableGenerator(name="inventory", table="U_SEQUENCES", pkColumnName="S_ID", valueColumnName="S_NEXTNUM", pkColumnValue="inventory", allocationSize=1000) @GeneratedValue(strategy=GenerationType.TABLE,generator="inventory") Integerid; @[email protected](cascade=CascadeType.MERGE) Customercustomer; } @Entity publicclassCustomerimplementsSerializable{ @Id privateintid; Well, here is where it all pays off.

It requires build-time bytecode instrumentation, if your classes are not instrumented, property level lazy loading is silently ignored. In this case, that's the Order class—one Customer can contain many Orders. To keep things simple, the demo app places the data in the App.config file. The opening tags of any mapping file are standard: The first tag is an XML declaration, and the second tag defines the XML namespace.

We will not spend time on that here, so you can close the Order mapping file. Check This Out Best practice would call for the address in a separate table, contrary to what we have done here. Not only did NHibernate delete the Able, Inc. At that point you should be ready to dive into the documentation for the framework.

You can use a SQL fragment (aka formula) instead of mapping a property into a column. We have only a few methods, and most of those are generic, reducing the need for overloads or creating a persistence class for each business model class. Note that NHibernate has several features for querying a database to load business objects: Query by criteria: Query the database by creating a Criteria object and setting its properties. Source By relieving you of the chore of writing persistence code, NHibernate enables you to keep your focus on your business model, where it belongs.

This allows Hibernate to make some minor performance optimizations.. Query by example: Query the database by creating a sample object of the type you want to retrieve and setting its properties to specify selection criteria. One-to-many: This type of association is often referred to as "containment".

The business model is set up so that the first Customer (Able, Inc.) places the first order.

This special generator uses the identifier value already assigned to the object's identifier property. A friend of mine started out with it, and thanked a lot afterwards. :) –gillyb Jul 15 '10 at 17:42 | show 1 more comment Your Answer draft saved draft Explicit polymorphisms means that class instances will be returned only by queries that explicitly name that class. The return type of search twin property must be either identical for basic properties or must correspond to the identifier class of the associated entity for an association.WarningThis approach is inherited

Obviously, the demo app is not a complete, real world application, and good design might call for a more fine-grained approach to the persistence tier. Once you have created mapping files for your classes, you can nearly forget about persistence. Mapping can be done by separate XML files, or by attributes on classes, properties, and member variables. http://awendigital.com/could-not/could-not-compile-the-mapping-document-nhibernate-hbm-xml.html Only when a transient object has been associated with a new session using
1, will Hibernate perform an extra SQL
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