Difference between Report screens vs Dynpros

Hi All:
Could someone please tell me what is the difference between report selection screens and dynpros?
Thanks.
Mithun

Hi
See the doc for Web Dynpros
Web Dynpro ABAP
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/db22242d-0701-0010-28a2-aeaa1fefd706
Hope that the following also helps you.
Web Dynpro for ABAP (WD4A, WDA) is the SAP standard UI technology for developing Web
applications in the ABAP environment. It consists of a runtime environment and a graphical
development environment with special Web Dynpro tools that are integrated in the ABAP
Workbench (SE80).
Web Dynpro offers the following advantages for application developers:
The use of declarative and graphical tools significantly reduces the implementation
effort
Web Dynpro supports a structured design process
Strict separation between layout and business data
Reuse and better maintainability by using components
The layout and navigation is easily changed using the Web Dynpro tools
Stateful applications are supported that is, if the page is changed and the required
data remains intact so that you can access it at any time throughout the entire
application context.
Note that stateless applications are not possible.
Automatic data transport using data binding
Automatic input check
Automatic operation of the Web Dynpro application using the keyboard
User interface accessibility is supported
Full integration in the reliable ABAP development environment
Web Dynpro Architecture
Definition
Web Dynpro is the SAP NetWeaver programming model for user interfaces (UIs).
The Web Dynpro model is based on the Model View Controller paradigm, and has the
following features that build on the classic dynpro model:
Clear separation of business logic and display logic
Uniform metamodel for all types of user interfaces
Execution on a number of client platforms.
Extensive platform independence of interfaces
Structure
Metamodel Concept
Web Dynpro provides support for developing Web representation of a business application.
You use specific tools to describe the properties of a Web Dynpro application in the form of
Web Dynpro metadata. The necessary source code is then generated automatically and
executed at runtime. In addition to the events offered by the framework, you can also define
your own events for a Web Dynpro application. However, the event handling must always be
programmed in separate source code areas which are executed automatically when the event
is triggered at runtime.
In Web Dynpro, each user interface is always made up of the same basic elements. These
elements of the metamodel can be statically declared using Web Dynpro tools.
It is also possible to implement elements of the metamodel at runtime and to change them or
reintegrate them at runtime. Using these implementations, you can make any changes or
enhancements to a user interface that has been created by declarative methods by
generating new interface structures at runtime.
This means that you can combine declarative processes and the implementation of source
code.
Graphical Development Tools
To support this declarative concept, both the SAP NetWeaver Developer Studio and the
ABAP Workbench contain a range of Web Dynpro tools. You can therefore generate a large
proportion of a Web Dynpro application using the tools provided, without having to create your
own source code. This applies to the following parts of the application:
Data flow between the front end and back end
Layout of the user interface
Properties of user interface elements
The Web Dynpro tools enable you to create source text areas manually within generated
source texts. These areas are not changed if the source code is regenerated.
Separation of Business and Application Logic
Using Web Dynpro enables a clear separation of business logic and display logic. A Web
Dynpro application runs on the front end and has local or remote access to the back end
system via a service. This means that the display logic is contained in the Web Dynpro
application, while the business logic and the persistence of the business objects run in the
back end system. The following options are currently available for connecting Web Dynpro
applications and the back-end system:
An interface generated using adaptive RFC, through which BAPIs of an SAP system
can be called
An interface for calling Web services
A self-generated interface
The source code required for connecting the Web Dynpro application can be generated
from a UML definition of the Web Dynpro interface. A UML definition can be imported
into the Web Dynpro tools as an XML file.
Conversion of the Model-View-Controller
Conversion of the Model-View-Controller Programming Model
Every Web Dynpro application is structured according to the Model View Controller
programming model:
? The model forms the interface to the back end system and thus enables the
Web Dynpro application access to data.
? The view is responsible for the representation of the data in the browser.
? The controller lies between the view and the model. The controller formats
the model data to be displayed in the view, processes the user entries made by the
user, and returns them to the model.
/people/thomas.jung/blog/2006/06/20/web-dynpro-abap-demonstration-videos
http://help.sap.com/saphelp_nw04s/helpdata/en/77/3545415ea6f523e10000000a155106/frameset.htm
Reward if useful
regards
Anji

Similar Messages

What is difference between report programming and dialog programming?

hi,
what is difference between report programming and dialog programming? plz provide some example code
bye

ABAP programming
Basically reports are used to read database and represent the results in lists.
Reports are collections of processing blocks that the system calls depending on events.
We can use reports to evaluate data from database tables.
Reports are stand alone programs and controlled by events.
A report itself never creates events
steps in report:
Processing the selection screen
Reading the database
Evaluating the data and creating lists
Outputting a list.
1st u write simple logics, after that u can enhance the code as step by step.
http://venus.imp.mx/hilario/Libros/TeachYrslfAbap4/index.htm
http://help.sap.com/saphelp_47x200/helpdata/en/d1/802cfc454211d189710000e8322d00/frameset.htm
http://www.sapdev.co.uk/reporting/reportinghome.htm
Dialog Programming
Structure of a Dialog Program
A dialog program consists of the following basic components:
Screens (dynpros)
Each dialog in an SAP system is controlled by dynpros. A dynpro (DYnamic PROgram) consists of a screen and its flow logic and controls exactly one dialog step. The flow logic determines which processing takes place before displaying the screen (PBO-Process Before Output) and after receiving the entries the user made on the screen (PAI-Process After Input).
The screen layout fixed in the Screen Painter determines the positions of input/output fields, text fields, and graphical elements such as radio buttons and checkboxes. In addition, the Menu Painter allows to store menus, icons, pushbuttons, and function keys in one or more GUI statuses. Dynpros and GUI statuses refer to the ABAP/4 program that control the sequence of the dynpros and GUI statuses at runtime.
ABAP/4 module pool
Each dynpro refers to exactly one ABAP/4 dialog program. Such a dialog program is also called a module pool, since it consists of interactive modules. The flow logic of a dynpro contains calls of modules from the corresponding module pool. Interactive modules called at the PBO event are used to prepare the screen template in accordance to the context, for example by setting field contents or by suppressing fields from the display that are not needed. Interactive modules called at the PAI event are used to check the user input and to trigger appropriate dialog steps, such as the update task.
All dynpros to be called from within one transaction refer to a common module pool. The dynpros of a module pool are numbered. By default, the system stores for each dynpro the dynpro to be displayed next. This dynpro sequence or chain can be linear as well as cyclic. From within a dynpro chain, you can even call another dynpro chain and, after processing it, return to the original chain.
Check this link for basics.
http://sap.mis.cmich.edu/sap-abap/abap09/index.htm
Check this link for Dialog Programming/Table Control
http://www.planetsap.com/Tips_and_Tricks.htm#dialog
Check this SAP Help for Dialog Program doc.
http://help.sap.com/saphelp_nw04/helpdata/en/9f/db9cdc35c111d1829f0000e829fbfe/content.htm
Check this SAP Help link for Subscreens.
http://help.sap.com/saphelp_nw70/helpdata/en/9f/dbabfe35c111d1829f0000e829fbfe/content.htm
Check this link for subscreen demo program.
http://abapcode.blogspot.com/2007/05/demo-program-to-create-subscreen-in.html
Also check this link too.
http://abapcode.blogspot.com/2007/06/dialog-programming-faq.html
http://help.sap.com/saphelp_nw04/helpdata/en/9f/db9cdc35c111d1829f0000e829fbfe/frameset.htm
http://sap.mis.cmich.edu/sap-abap/abap09/sld004.htm
http://help.sap.com/saphelp_nw04/helpdata/en/52/670ba2439b11d1896f0000e8322d00/frameset.htm
http://help.sap.com/saphelp_nw04/helpdata/en/52/670c17439b11d1896f0000e8322d00/frameset.htm
http://help.sap.com/saphelp_nw04/helpdata/en/52/670c17439b11d1896f0000e8322d00/frameset.htm
http://help.sap.com/saphelp_nw04/helpdata/en/9f/db9ccf35c111d1829f0000e829fbfe/frameset.htm
http://abapprogramming.blogspot.com/

Difference between reports & modulepool programs

hi experts,
what is module pool programs?
Pls tell me the difference between reports & module pool programs?

hi..
TYPES 1
Type 1 programs have the important characteristic that they do not have to be controlled using user-defined screens. Instead, they are controlled by the runtime environment, which calls a series of processing blocks (and selection screens and lists where necessary) in a fixed sequence. User actions on screens can then trigger further processing blocks.
You can start a type 1 program and the corresponding processor in the runtime environment using the SUBMIT statement in another ABAP program. There are also various ways of starting a type1 program by entering its program name. This is why we refer to type 1 programs as executable programs.
When you run a type 1 program, a series of processors run in a particular order in the runtime environment. The process flow allows the user to enter selection parameters on a selection screen. The data is them selected from the database and processed. Finally, an output list is displayed. At no stage does the programmer have to define his or her own screens. The runtime environment also allows you to work with a logical database. A logical database is a special ABAP program which combines the contents of certain database tables. The flow of a type 1 program is oriented towards reporting, whose main tasks are to read data from the database, process it, and display the results. This is why executable programs (type 1) in the R/3 System are often referred to as reports, and why running an executable program is often called reporting.
Since it is not compulsory to define event blocks, you can yourself determine the events to which your ABAP program should react. Furthermore, you can call your own screens or processing blocks at any time, leaving the prescribed program flow. You can use this, for example, to present data in a table on a dialog screen instead of in a list. The simplest executable program (report) contains only one processing block (START-OF-SELECTION).
Executable programs do not require any user dialog. You can fill the selection screen using a variant and output data directly to the spool system instead of to a list. This makes executable programs (reports) the means of background processing in the R/3 System.
You can also assign a transaction code to an executable program. Users can then start it using the transaction code and not the program name. The reporting-oriented runtime environment is also called when you run a report using a transaction code. This kind of transaction is called a report transaction.
It is appropriate to use executable programs (reports) when the flow of your program corresponds either wholly or in part to the pre-defined flow of the runtime environment. Until Release 4.5A, the only way to use a logical database was to use an executable program. However, from Release 4.5A, it is also possible to call logical databases on their own.
Type M
The most important technical attribute of a type M program is that it can only be controlled using screen flow logic. You must start them using a transaction code, whcih is linked to the program and one of its screens (initial screen). Another feature of these programs is that you must define your own screens in the Screen Painter (although the intial screen can be a selection screen).
When you start a program using a transaction code, the runtime environment starts a processor that calls the initial screen. This then calls a dialog module in the corresponding ABAP program. The remainder of the program flow can take any form. For example, the dialog module can:
return control to the screen, after which, the processing passes to a subsequent screen. Each screen has a following screen, set either statically or dynamically.
call other sequences of screens, selection screens or lists, from which further processing blocks in the ABAP program are started.
call other processing blocks itself, either internally or externally.
call other application programs using CALL TRANSACTION (type M program) or SUBMIT (type 1 program).
ABAP programs with type M contain the dialog modules belonging to the various screens. They are therefore known as module pools. It is appropriate to use module pools when you write dialog-oriented programs using a large number of screens whose flow logic largely determines the program flow.
REGARDS,
VEERESH

Differences Between Report Painter and Report Writer

Hi,
Anyone knows the differences between report painter and report writer?
Thanks,
CW

Hello CW Teo,
Yes report writer can be used in logistics also. One of the way which I am aware of is described below.
Flexible analyses allow you to can tailor the way in which key figures are combined and aggregated. This means that it is possible to both provide administrators with detailed information and management with aggregated information.
Flexible analyses enable easy access to the Report Writer, a user-friendly tool with which you can create reports for various analyses. The Report Writer is integrated in other SAP applications, such as Extended General Ledger and Cost Center Accounting.
Evaluation structures form the interface to the Report Writer. Evaluation structures consist of characteristics and key figures and are easy to construct.An evaluation structure with the same name exists for each information structure in the standard system.Even the self-defined information structures created in Customizing can be evaluated via the flexible analyses.
Evaluations:You can create an evaluation on the basis of the evaluation structure.
To define an evaluation, all you need to do is select the characteristics and key figures you require (pick-up technique).One of the especially useful features here is that you have the option of tailoring the layout of your report to suit your particular requirements. You can also define extra key figures for the reports, which are derived from existing key figures by means of calculation formulas. You can thereby multiply the key figures or divide one key figure by another.
============================================================
In addition to the above you can also edit a report in logistics module with the help of a report writer. below mentioned is the process for it.
It is now possible to edit your report data using the Report Writer. You can also change the layout of the report. The most important functions of the layout design are summarized below.
Summation levels:In the report screen, you can use the menu sequence View ->Summation level to specify the number of summation used to calculate total values. All totals that do not lie within the specified interval will be hidden. A summation level corresponds to a hierarchical level (for example, material level). Summation level 1 is the lowest hierarchical level. Summation level 2 is the next level up, and so on. The individual values are on the summation level 0.
The summation levels can be specified both universally (for the entire report) or locally (for specific blocks of rows). In this case, the local settings overwrite global values.
Report views:If a report is displayed on the screen, the Report Writer will then set page breaks so that exactly one page fits into the current window. This view will be defined as the standard view. As the Report Writer always processes exactly one page, you can only use the page keys and page icons to page up and down; the scroll bars cannot be used.
The page view can be determined via Settings-> Page view. The page breaks in the page view correspond to those defined in the report layout.
Hide and show rows:The function Edit->Hide rows exclude certain preselected areas of your report from the display. You can undo this command with Edit ® Show rows.
Expanding and collapsing report rows:View-> Hierarchy->Collapse allows you to hide the report rows of the sub-trees that are located underneath. View->Hierarchy ->Expand allows you to undo this command level by level.
If you want to display all the report rows that were hidden by collapsing the hierarchy or restricting the summation levels, select, View->Hierarchy-> Expand all.
View->Collapse all allows you to reduced every row block to the highest summation level.
Texts and Annotations:You can create an annotation for your report.
Select: Extras->Annotation.
You branch into the text editor of the Report Writer.
Via the menu sequence Settings->Texts, you can create and format a title page, the last page, as well as headers and footers using word processing functions.
For example, you can store variables in the header for the author of the report, the date of the selection or the name of the person who last changed the report.
Layout parameters:Using the menu sequence Settings->Layout you can specify the page format, display form, rows and columns of the report according to your needs and you can determine the settings for the graphics function. You can make these layout settings with Report->Save settings.
Hope I had been able to help you to some extent. please assign points as reward.
Rgds
Manish

Difference between modal screen and normal screen

Hi everyone,
Now,I am developing a dypro. when I create a modal screen ,I found no difference between normal screen and modal screen.
eg. If I use the statement "call screen" , whatever which type of screen you use, the results look like the same. The same to the statement "call screen start at end at".

Hi
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Pankaj Singh
Message was edited by:
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Message was edited by:
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Difference between Report screens vs Dynpros

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