Difference between component configuration and application configuration in webdynpro

what is the difference between component configuration and application configuration in webdynpro?

Hi Rohit,
With the component configuration, you can control the behavior of each individual component within a Web Dynpro application or the user interface of individual views. For each component, several records of configuration data can be created.
Using the application configuration, it is now possible to assign the configuration required in the current application to all the components used.
In short : Component Config belongs to WDP Component and Appl'n Config. belongs to WDP Appl'n.
Check this document for more information.
Web Dynpro for ABAP - Component and Application Configuration
Thanks
KH

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Difference between Component Controller and Custom Controllet...?

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Can any one tell me Difference between Component Controller and Custom Controllet...?
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Hi RaviShankar B,
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/webas/web%20dynpro%20sample%20applications%20and%20tutorials.htm
Also refer to the below link
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For each component of yours there will be a component controller, were in you can define context variables and methods, events etc.. This usefull while using models.
Simple example where we can see this is, when you create global context variable in this controller and map this variable to the view controller context variable of different view, which enables you to pass the value of the variable from one view to another.
Custom Controller:-
They also have the same the function but as the name suggest there function can be customised. That is we can have more than one custom controller for a component. This is usefull when we need to create seperate execute methods for inputs from model import( Both webservice and rfc call).So you can seperate each other. Example is there in the more sample codes and application section.
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Difference Between central instance And application instance

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Check these links
http://oreilly.com/catalog/sapadm/chapter/ch01.html
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Hi Balaji,
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Difference between custom controller and interface component

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Can anybody tell me what are the differences between component controller and custome controller , component interface.
Thanks in advance.
Regards
sireesha.

hi,
When any component is created web dynpro framework automatically generates the controller(controller is nothing but entity which controls the working of views and acts as a binding layer between model and view), this controller is called Component controller.
We can have as many controller as we want, but they should be used sparingly, Controller should encapsulate the functionality which is common to whole component , like if your application fetches master data and appliaction data so better you should have 2 controller , 1 for master and 2 for application so as to have modularisation in your application.
Component Interface is the entity which is used when you want to use the functionality defined in some other component i.e. if your main component is acting as a parent comopnent then the child component usage should be defined via this interface controller under Component Interface, so that main compo will access it via childs Interface Controller.
Other node under this , Interface view , gets generated for every creation of window , Interface view is entry point into our application for web Dynpro framework
jsut check out following links,
Re: Difference between Component Controller and Custom Controllet...?
Re: custom vs component controller
check out these ex for the Component Interface and node under this,
https://www.sdn.sap.com/irj/sdn/downloaditem?rid=/webcontent/uuid/19e6e990-0201-0010-eca6-a62e342eaad3 [original link is broken]
https://www.sdn.sap.com/irj/sdn/downloaditem?rid=/webcontent/uuid/1208c2cd-0401-0010-4ab6-f4736074acc6 [original link is broken]
https://www.sdn.sap.com/irj/sdn/downloaditem?rid=/webcontent/uuid/1ee0e990-0201-0010-75bf-a087c241cb83 [original link is broken]
hope it helps
regards

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Please let me know the answers soon.
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May I suggest you get hold of a copy of the Oracle Discoverer 10g Handbook that I wrote. That book explains in detail the differences between the modes. I also have a free white paper on my website that describes how to install Discoverer into Applications mode.
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Michael
http://ascbi.com

Difference between component configuration and application configuration in webdynpro

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