What's New in nHibernate 1.2

NHibernate is an Object-relational mapping (ORM) solution for the Microsoft .NET platform. It is licensed under the GNU Lesser General Public License. It is a port of the popular Java O/R mapper Hibernate to .NET. Version 1.0 mirrors the feature set of Hibernate 2.1, adding a number of features from Hibernate 3. NHibernate 1.2.0, released May of 2007, introduces many more features from Hibernate 3 and support for .NET 2.0, stored procedures, generics and nullable types.

  • All classes and collections with 1.2 are now loaded lazily by default. You may need to change lazy="false", or make methods be virtual.
  • Use .Net 2.0 Generics for all collection interfaces (You no longer have to use the NHibernate.Generics compatability library).
  • Support Batching for SQL Server - huge perforamance increase in some scenarios.
  • Support Stored Procedures.
  • Support named connection strings.
  • Support SQL Server 2005 and SQL Server 2005 Everywhere dialects.
  • Support Parametrized types and User Collection Types.
  • Support projections in criteria queries, i.e. CreateCriteria(typeof(T)).Count(), and CreateCriteria(typeof(T)).Max(...), etc.
  • New IL-based reflection optimizer - another big performance boost.
  • Use SetProjection(Projections.Count("ID")) instead of IQuery's Select count(*).
  • New DetachedCriteria
  • New GetCurrentSession method of SessionFactory: SessionFactory.GetCurrentSession()

    • You can click here to check out a list of .Net ORM products.

    See also

  • SQL: Use Dynamic SQL Query Correctly
  • SQL 2005: Use DMV and CROSS APPLY to Get Cached Plans
  • SQL 2005: Discontinued or Deprecated Features in SQL Server 2005
  • SQL 2005: Default Trace Enabled Option
  • SQL 2005: Column Level Permissions
  • SQL 2005: SQLCMD Supports Parameterized Variables and Macro Features
  • SQL 2005: DTS Has Become SSIS now
  • SQL 2005: Microsoft SQL Server 2005 JDBC Driver
  • SQL 2005: Query Notifications in ADO.Net 2.0
  • SQL 2005: Overcome SQL Index Size Limit
  • SQL 2005: DDL Triggers
  • SQL 2005: Why Should Use 64 Bit Now
  • SQL 2005: How to Rebuild The Master Database
  • SQL 2005: A Little Trick to Install SQL 2005 Onto Your Dirty DEV Machine
  • SQL 2005: New Resource Database
  • SQL 2005: Alter Index Rebuild
  • SQL 2005: XQuery Sample
  • SQL 2005: How to Move Database
  • SQL: Use COALESCE to Generate a List
  • SQL: How to Debug SQL Deadlocks
  • .Net: How to Bypass Strong Name Check
  • Agile: Lean Software Development - An Agile Toolkit
  • ORM: How to Use nHibernate 1.2 to Call Stored Procedure to Return a Dataset Without a Mapping Entity
  • AJAX: ASP.NET AJAX Tips
  • .Net: Debugging Commands
  • .Net: How to Run NUnit And Debug Your Test Fixtures Directly from VS 2005
  • .Net: How to Add Domain User to Local Group
  • .Net: Lock Value Type?
  • .Net: How to Create an Instance of a Generic Type with Parameters
  • .Net: How to Get Address of a Managed Type
  • ORM: New Features of nHibernate 1.2
  • .Net: How to Get System Error Message from HRESULT in Managed Code
  • .Net: Use Windows PowerShell Now
  • WMI: Use WMI to Run Commands on Remote Machine
  • API: GetLogicalProcessorInformation to Detect CPUs
  • .Net: How to Implement Singleton Correctly
  • .Net: There is no MTS object context (Exception from HRESULT: 0x8004E004)
  • .Net: The Net Objectives Pattern Repository
  • Web: Access Denied When ASP.Net Accesses Eventlog
  • Nant: Error Loading GUID of Project
  • AJAX: Ajax in Action
  • DTC: DtcGetTransactionManager Fails
  • .Net: Run .Net 1.1 COM+ Serviced Components Under .Net 2.0 Framework
  • .Net: Debugging Managed Code Tip
  • .Net: Assembly Binding Log Viewer (Fuslogvw.exe)
  • .Net: .Net Framework Design Guidelines
  • .Net: Use Global Catalog and CheckTokenMembership to Check AD Group Membership



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