Copyright © 2005 Finetix LLC All Rights Reserved 0 SpringFramework.Net Developer Session Chris Donnan The Peer Frameworks Series -.Net and Java

Copyright © 2005 Finetix LLC All Rights Reserved 1 SpringFramework.net 50,000 Ft View Core AOP ServicesData Access Web DesktopWindows Services 3 rd Party Integration

Copyright © 2005 Finetix LLC All Rights Reserved 2 Application Context “One Singleton to rule them all” The IApplicationContext is the ‘normal’ top level entry point to use SpringFramework.net Inside you will find (along with other stuff) implementation of: IObjectFactory IResourceLocator These are the interfaces that are most used in day to day programming With Spring.

Copyright © 2005 Finetix LLC All Rights Reserved 3 Spring ObjectFactory  The center of it all… Since the Application Context is an IObjectFactory – you can use it To act as a ‘dynamic factory’ for your objects. You simply ask the factory for your object – and you use it as you normally Would use any “new’d” object. The real beauty is that Spring manages assembling that object for you – Giving it whatever dependencies it needs.

Copyright © 2005 Finetix LLC All Rights Reserved 4 Spring Resource Abstractions You can also use the IApplicationContext’s IResourceLocator interface: This allows you to get your resources from wherever they may be. This could Be at a URL, a File, an Embedded Resource, etc.

Copyright © 2005 Finetix LLC All Rights Reserved 5 Spring.net Demo  DEMO. –Building a complex business object with many dependencies –Prototypes and singletons –Populating collections

Copyright © 2005 Finetix LLC All Rights Reserved 6 Aspect Oriented Programming  Cross Cutting functionality –Logging –Transactions –Security –Other code that tend to repeat across an application

Copyright © 2005 Finetix LLC All Rights Reserved 7 AOP Basic code – nothing special

Copyright © 2005 Finetix LLC All Rights Reserved 8 AOP

9 AOP Code to invoke programmatically Output from execution

Copyright © 2005 Finetix LLC All Rights Reserved 10 AOP XML Conifguration Same as programmatic usage – XML Configuration

Copyright © 2005 Finetix LLC All Rights Reserved 11 AOP

Copyright © 2005 Finetix LLC All Rights Reserved 12 Spring Web  Bidirectional data binding –Via attributes  Master Pages in.Net 1x  Dependency Injection for ASP.NET pages/ web services  Result Mapping –MVC Framework for ASP.Net

Copyright © 2005 Finetix LLC All Rights Reserved 13 Data Binding public class UserRegistration : Spring.Web.UI.Page { [Binding("Text", "UserInfo. ")] protected TextBox ; [Binding("Text", "UserInfo.Address.PostalCode")] protected TextBox postalCode; ……. } *Notice it uses Expression synatax

Copyright © 2005 Finetix LLC All Rights Reserved 14 Result Mapping Used to externalize the mapping of action results to target pages:

Copyright © 2005 Finetix LLC All Rights Reserved 15 Spring Data Access and Transactions  ADO.Net  Hibernate  IBatis.net  Basic patterns and utility classes/ base classes to speed up creating DAO and templated data access classes.  Transaction support  The goal is to reduce code needed to get rolling!

Copyright © 2005 Finetix LLC All Rights Reserved 16 Hibernate Code Examples public class NHTestObjectDao : HibernateDaoSupport, ITestObjectDao { [Transaction()] public void Create(TestObject to) { HibernateTemplate.Save(to); }

Copyright © 2005 Finetix LLC All Rights Reserved 17 Hibernate Config Example <object id="DbProvider" type="Spring.Data.Support.SqlProvider, Spring.Data"> <property name="ConnectionString" value="Data Source=(local);Database=Spring;User ID=springqa;Password=springqa;Trusted_Connection=False"/> <object id="SessionFactory" type="Spring.NHibernate.LocalSessionFactoryObject, Spring.NHibernate"> Spring.NHibernate.Integration.Tests …

Copyright © 2005 Finetix LLC All Rights Reserved 18 Spring Expressions Evaluation of text expressions against live objects. Sort of like XPath for objects. Simple Example: Inventor tesla = new Inventor("Nikola Tesla", new DateTime(1856, 7, 9), "Serbian"); tesla.PlaceOfBirth.City = "Smiljan"; string evaluatedName = (string) ExpressionEvaluator.GetValue(tesla, "Name"); string evaluatedCity = (string) ExpressionEvaluator.GetValue(tesla, "PlaceOfBirth.City"));

Copyright © 2005 Finetix LLC All Rights Reserved 19 Expressions Continued This can get more complex. You can evaluate objects sub parts, sub parts, etc. Inventor pupin = (Inventor) ExpressionEvaluator.GetValue(ieee, "Officers['president']"; string city = (string) ExpressionEvaluator.GetValue(ieee, "Officers['president'].PlaceOfBirth.City"); ExpressionEvaluator.SetValue(ieee, "Officers['advisors'][0].PlaceOfBirth.Country", "Croatia"); In the latest Spring.net release- there is support of literals, logic, properties, indexers, arrays, types, and lots more

Copyright © 2005 Finetix LLC All Rights Reserved 20 SpringFramework.net DAF  Desktop Application Framework –Pub/ Sub like events –UI Application Container –Injection of dependencies into Controls/ Forms –Model/ View/ Controller | Presenter infrastructure –UI Services Model (ways to GET UI services in a consistent way) Toolbars Docking Managers Status Bars - etc –Databind binding framework Grid Binding Expression based simple binding Object Views (alternative to attributes) Expression based validation

Copyright © 2005 Finetix LLC All Rights Reserved 21 The Peer Frameworks Series -.Net and Java  1) Spring Framework Developer Session - SpringFramework.net, SpringFramework.org 2) Test Drive Development Developer Session - NUnit, JUnit; Rhino Mocks in.net and Easy Mock in Java 3) Db4o Developer Session - Open Source Object Database in.net and Java 4) ORM Developer Session - Hibernate, NHibernate / IBatis

Copyright © 2005 Finetix LLC All Rights Reserved 22 Ruby does IoC Concrete Implementations