What is ABAP web Dynpro?
From a technological
reason for the view, SAP's web Dynpro for Java and ABAP might be a radical
stride inside the development of Web-based UIs. it's complete as opposed to any
design model already used by SAP and speaks to a jump inside the development of
Web-based enterprise resource planning (ERP) applications.
Web Dynpro applications
are built utilizing decisive programming methods supported the Model view
Controller (MVC) standard. That is, you indicate which UI components you might
want to have on the customer, and wherever those components can get their data
from. you furthermore might define the possible navigation methods
declarative in your application. All the code to make the user interface is
then generated automatically inside a standard run-time framework. This relieves
you from the repetitive coding tasks concerned in writing HTML and creating it
interactive with JavaScript.
ABAP web Dynpro has
been out there since SAP NetWeaver 7.0 (SAP NetWeaver Application Server 7.0).
For developing the entities of a web Dynpro application, the object Navigator
(transaction code SE80) has been improved.
Web Dynpro is designed
to support structured development. The software modularization units are web
Dynpro components, which might be combined to make up advanced applications.
Web Dynpro applications will access totally different sorts of data sources:
• From an ABAP web
Dynpro application, all sorts of utilizing components will be self-addressed
directly (for example, function modules or methods). it's even possible to
access the database via an ABAP select. However, this ends up in a compounding
between flow logic and business logic and will, therefore, be omitted.
• web Services will be
used when having generated a web Service client object.
• The SAP Java
Connector (JCo) will be want to call methods of Enterprise JavaBeans located on
a J2EE Engine.
Model objects don't
seem to be however supported in ABAP web Dynpro. the most effective way to have
reusable entities encapsulating business logic is to make ABAP classes
containing the source code. it's additionally possible to develop UI-free
(faceless) web Dynpro components, that solely offer reusable functionality.
This component will then be gotten to by elective web Dynpro component by
recommends that of component reuse.
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Application Scenarios with Web Dynpro |
Benefits of web Dynpro
Web Dynpro's primary
objective is to modify application developers to make capable web applications
with least exertion utilizing expressive tools in an exceptionally organized
design method. One directing standard inside the web Dynpro philosophy is the
fewer lines of transcribed code, the better. web Dynpro seeks after this
objective in two ways in which.
• web Dynpro utilizes
an explanatory, language-neutral meta model for characterizing a UI. From this
conceptual definition, the development condition creates the coveted source
code.Hand-written code still has its place, however, is bound to it required to
manipulate the business data, not the user interface.
• web Dynpro provides
technical features like support for internationalization, flicker-free
interaction, and a clean separation of the business logic and also the
interface. This partition is accomplished through a modified execution of the
Model view Controller (MVC) outline worldview.
Since the monotonous
assignments of UI writing are disposed of, the developer will concentrate his
consideration on the stream of business information through the machine. web
Dynpro applications will keep running on a scope of devices and on fluctuated
sorts of systems an important feature for collaboration scenarios.
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