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

Copyright © 2005 Finetix LLCAll Rights Reserved 1

SpringFramework.Net Developer SessionSpringFramework.Net Developer Session

Chris Donnan

The Peer Frameworks Series - .Net and Java


SpringFramework.net 50,000 Ft ViewSpringFramework.net 50,000 Ft View

Core

AOP Services Data Access

Web Desktop Windows Services 3rd Party

Integration


Application ContextApplication 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 programmingWith Spring.


Spring ObjectFactorySpring ObjectFactory

The center of it all…

Since the Application Context is an IObjectFactory – you can use itTo act as a ‘dynamic factory’ for your objects.

You simply ask the factory for your object – and you use it as you normallyWould use any “new’d” object.

The real beauty is that Spring manages assembling that object for you –Giving it whatever dependencies it needs.


Spring Resource AbstractionsSpring Resource Abstractions

You can also use the IApplicationContext’s IResourceLocator interface:

This allows you to get your resources from wherever they may be. This couldBe at a URL, a File, an Embedded Resource, etc.


Spring.net DemoSpring.net Demo

DEMO.– Building a complex business object with many dependencies

– Prototypes and singletons

– Populating collections


Aspect Oriented ProgrammingAspect Oriented Programming

Cross Cutting functionality– Logging

– Transactions

– Security

– Other code that tend to repeat across an application


AOPAOP

Basic code – nothing special


AOPAOP


AOPAOP

Code to invoke programmatically

Output from execution


AOP XML ConifgurationAOP XML Conifguration

Same as programmatic usage – XML Configuration


AOPAOP


Spring WebSpring 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


Data BindingData Binding

public class UserRegistration : Spring.Web.UI.Page

{

[Binding("Text", "UserInfo.Email")]

protected TextBox email;

[Binding("Text", "UserInfo.Address.PostalCode")]

protected TextBox postalCode;

…….

}

*Notice it uses Expression synatax


Result MappingResult Mapping

Used to externalize the mapping of action results to target pages:

<object id="homePageResult" type="Spring.Web.Support.Result, Spring.Web"> <property name="TargetPage" value="~/Default.aspx"/> <property name="Mode" value="Transfer"/> <property name="Parameters"> <dictionary>

<entry key="literal" value="My Text"/> <entry key="name" value="${UserInfo.FullName}"/> <entry key="host" value="${Request.UserHostName}"/>

</dictionary> </property>

</object>


Spring Data Access and TransactionsSpring 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!


Hibernate Code ExamplesHibernate Code Examples

public class NHTestObjectDao : HibernateDaoSupport, ITestObjectDao{ [Transaction()] public void Create(TestObject to) { HibernateTemplate.Save(to); }}


Hibernate Config ExampleHibernate 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>

<object id="SessionFactory" type="Spring.NHibernate.LocalSessionFactoryObject, Spring.NHibernate">

<property name="DbProvider" ref="DbProvider"/> <property name="MappingAssemblies"> <list> <value>Spring.NHibernate.Integration.Tests</value> </list> </property> <property name="HibernateProperties"> <dictionary>

… </dictionary> </property></object>


Spring ExpressionsSpring 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"));


Expressions ContinuedExpressions 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


SpringFramework.net DAFSpringFramework.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


The Peer Frameworks Series - .Net and Java

1) Spring Framework Developer Session - SpringFramework.net, SpringFramework.org2) Test Drive Development Developer Session - NUnit, JUnit; Rhino Mocks in .net and Easy Mock in Java3) Db4o Developer Session - Open Source Object Database in .net and Java4) ORM Developer Session - Hibernate, NHibernate / IBatis


Ruby does IoCRuby does IoC

Concrete Implementations

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

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