Comments on: Setter injection versus constructor injection and the use of @Required http://blog.springsource.org/2007/07/11/setter-injection-versus-constructor-injection-and-the-use-of-required/ The voice of SpringSource Wed, 08 Feb 2012 17:31:53 +0000 hourly 1 http://wordpress.org/?v=3.1.1 By: Gal http://blog.springsource.org/2007/07/11/setter-injection-versus-constructor-injection-and-the-use-of-required/comment-page-1/#comment-206518 Gal Mon, 17 Oct 2011 09:15:11 +0000 http://blog.interface21.com/main/2007/07/11/setter-injection-versus-constructor-injection-and-the-use-of-required/#comment-206518 Using setter injection solves cyclic dependencies. Using setter injection solves cyclic dependencies.

]]> By: mck http://blog.springsource.org/2007/07/11/setter-injection-versus-constructor-injection-and-the-use-of-required/comment-page-1/#comment-194059 mck Fri, 13 May 2011 15:30:40 +0000 http://blog.interface21.com/main/2007/07/11/setter-injection-versus-constructor-injection-and-the-use-of-required/#comment-194059 Maybe it's ok to just think of Field injection as an ad-hoc Service Locator. Certainly gives you more freedom. This article goes more in depth to that suggestion... http://tech.finn.no/2011/05/13/dependency-injection-with-constructors/ Maybe it's ok to just think of Field injection as an ad-hoc Service Locator.
Certainly gives you more freedom.

This article goes more in depth to that suggestion…
http://tech.finn.no/2011/05/13/dependency-injection-with-constructors/

]]> By: paul http://blog.springsource.org/2007/07/11/setter-injection-versus-constructor-injection-and-the-use-of-required/comment-page-1/#comment-178846 paul Wed, 17 Nov 2010 08:21:33 +0000 http://blog.interface21.com/main/2007/07/11/setter-injection-versus-constructor-injection-and-the-use-of-required/#comment-178846 great post.. i also found a spoon fed tutorial using @Required annotation http://www.adobocode.com/spring/how-to-use-required-annotation-in-spring hope it helps great post..

i also found a spoon fed tutorial using @Required annotation

http://www.adobocode.com/spring/how-to-use-required-annotation-in-spring

hope it helps

]]> By: ambulans http://blog.springsource.org/2007/07/11/setter-injection-versus-constructor-injection-and-the-use-of-required/comment-page-1/#comment-170097 ambulans Wed, 09 Dec 2009 21:57:23 +0000 http://blog.interface21.com/main/2007/07/11/setter-injection-versus-constructor-injection-and-the-use-of-required/#comment-170097 Hi, very good web site. Thanks. Hi, very good web site. Thanks.

]]> By: ambulans http://blog.springsource.org/2007/07/11/setter-injection-versus-constructor-injection-and-the-use-of-required/comment-page-1/#comment-170091 ambulans Wed, 09 Dec 2009 16:00:22 +0000 http://blog.interface21.com/main/2007/07/11/setter-injection-versus-constructor-injection-and-the-use-of-required/#comment-170091 Hi,very good web site. Thanks. Hi,very good web site. Thanks.

]]> By: George Anderson http://blog.springsource.org/2007/07/11/setter-injection-versus-constructor-injection-and-the-use-of-required/comment-page-1/#comment-146045 George Anderson Wed, 11 Feb 2009 18:54:12 +0000 http://blog.interface21.com/main/2007/07/11/setter-injection-versus-constructor-injection-and-the-use-of-required/#comment-146045 I use setter dependency injection in my big project and constructor injection really do bother me because although this is just an application, our architecture uses a lot of inheritance and interfaces to accomplish things. By the way, I can see one class with 40 or more dependencies. This is what we call a Façade. Best regards, George. I use setter dependency injection in my big project and constructor injection really do bother me because although this is just an application, our architecture uses a lot of inheritance and interfaces to accomplish things.

By the way, I can see one class with 40 or more dependencies. This is what we call a Façade.

Best regards,
George.

]]> By: Nikhil Vasaikar http://blog.springsource.org/2007/07/11/setter-injection-versus-constructor-injection-and-the-use-of-required/comment-page-1/#comment-119641 Nikhil Vasaikar Thu, 04 Sep 2008 08:36:02 +0000 http://blog.interface21.com/main/2007/07/11/setter-injection-versus-constructor-injection-and-the-use-of-required/#comment-119641 The xml config for @Mandatory did not come up, this time posting without the angular brackets bean class="org.springframework.beans.factory.annotation.RequiredAnnotationBeanPostProcessor" p:requiredAnnotationType="Mandatory" The xml config for @Mandatory did not come up, this time posting without the angular brackets

bean class="org.springframework.beans.factory.annotation.RequiredAnnotationBeanPostProcessor"
p:requiredAnnotationType="Mandatory"

]]> By: Nikhil Vasaikar http://blog.springsource.org/2007/07/11/setter-injection-versus-constructor-injection-and-the-use-of-required/comment-page-1/#comment-119639 Nikhil Vasaikar Thu, 04 Sep 2008 08:31:12 +0000 http://blog.interface21.com/main/2007/07/11/setter-injection-versus-constructor-injection-and-the-use-of-required/#comment-119639 Create your custom annotaion:- @Retention(RetentionPolicy.RUNTIME) @Target(ElementType.METHOD) public @interface Mandatory { } Register this annotation with the RequiredAnnotationBeanPostProcessor You can now use @Mandatory on the setter methods. Create your custom annotaion:-

@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface Mandatory {
}

Register this annotation with the RequiredAnnotationBeanPostProcessor

You can now use @Mandatory on the setter methods.

]]> By: Andrew Feller http://blog.springsource.org/2007/07/11/setter-injection-versus-constructor-injection-and-the-use-of-required/comment-page-1/#comment-118036 Andrew Feller Fri, 22 Aug 2008 19:51:02 +0000 http://blog.interface21.com/main/2007/07/11/setter-injection-versus-constructor-injection-and-the-use-of-required/#comment-118036 Aside from constructor injection, how else can someone ensure objects are in valid states without coupling it to Spring? I have avoided @Required and initializingBean interface because I will have to take the same classes later and plug them into a different framework that doesn't use it. Aside from constructor injection, how else can someone ensure objects are in valid states without coupling it to Spring? I have avoided @Required and initializingBean interface because I will have to take the same classes later and plug them into a different framework that doesn't use it.

]]> By: Bert van Brakel http://blog.springsource.org/2007/07/11/setter-injection-versus-constructor-injection-and-the-use-of-required/comment-page-1/#comment-113000 Bert van Brakel Mon, 14 Jul 2008 07:21:21 +0000 http://blog.interface21.com/main/2007/07/11/setter-injection-versus-constructor-injection-and-the-use-of-required/#comment-113000 Oh, and using the seperate FooOpts concreate class instead of the interface is easier for spring integration, as you just create another config entry for the FooOpts bean, and pass that in as a constructor arg to the Foo bean. Oh, and using the seperate FooOpts concreate class instead of the interface is easier for spring integration, as you just create another config entry for the FooOpts bean, and pass that in as a constructor arg to the Foo bean.

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