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    NWDS WebDynpro

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    api-3852390
    The document discusses SAP Web Dynpro for Java (Java WD) applications. It describes that Java WD runs on the SAP Netweaver application server for Java and is developed using the SAP Netweaver Development Studio. The basic element of a Java WD application is a component, which contains controllers, interfaces, and context for hierarchical data storage. Development Components can be used to structure work across multiple projects and make elements available to other developers.

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    Attribution Non-Commercial (BY-NC)
    Download as DOC, PDF, TXT or read online from Scribd

    NWDS WebDynpro

    Uploaded by

    api-3852390
    1K views3 pages
    The document discusses SAP Web Dynpro for Java (Java WD) applications. It describes that Java WD runs on the SAP Netweaver application server for Java and is developed using the SAP Netweaver Development Studio. The basic element of a Java WD application is a component, which contains controllers, interfaces, and context for hierarchical data storage. Development Components can be used to structure work across multiple projects and make elements available to other developers.

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    NWDS-WebDynpro

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    The document discusses SAP Web Dynpro for Java (Java WD) applications. It describes that Java WD runs on the SAP Netweaver application server for Java and is developed using the SAP Netweaver Development Studio. The basic element of a Java WD application is a component, which contains controllers, interfaces, and context for hierarchical data storage. Development Components can be used to structure work across multiple projects and make elements available to other developers.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as DOC, PDF, TXT or read online from Scribd
    Download as doc, pdf, or txt
    1K views3 pages

    NWDS WebDynpro

    Uploaded by

    api-3852390
    The document discusses SAP Web Dynpro for Java (Java WD) applications. It describes that Java WD runs on the SAP Netweaver application server for Java and is developed using the SAP Netweaver Development Studio. The basic element of a Java WD application is a component, which contains controllers, interfaces, and context for hierarchical data storage. Development Components can be used to structure work across multiple projects and make elements available to other developers.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as DOC, PDF, TXT or read online from Scribd
    Download as doc, pdf, or txt
    of 3

    SAP Web Dynpro for Java NWDS-WebDynpro Program

    1. Netweaver Development Studio


    1.1. Overview

    The Netweaver Development Studio is a SAP extension of the open-source Eclipse


    project. SAP provides additional plug-ins for Eclipse to enhance Eclipse is relation to
    SAP technology.

    More or less everything you know from the handling of Eclipse can be applied to the
    NWDS.

    To run Web dynpro for Java applications you need the Netweaver application server for
    Java. To develop these applications you need the SAP Netweaver Development Studio.

    1.2. Download SAP Netweaver Composition Environment

    You find trivial version of the NWDC on the SAP Developer Network. http://sdn.sap.com

    Select here Downloads. Currently the best download is the SAP Netweaver
    Composition Environment. Downloading the software requires a valid user.
    Requistration is free of charge.

    2. Webdynpro Introduction
    2.1. Overview

    Webdynpro for Java (Java WD) only runs on the server. You can develop locally with
    the SAP Netweaver Development Studio but to test and run the application you have to
    deploy the application to the server.

    Java WD runs on the Netweaver application server for Java (NWAS Java) which is
    decoupled from the SAP ABAP application server. To access the SAP ABAP application
    server you have to use Remote Function Calls (RFC) or Webservices.

    2.2. Component

    The basic element of WD is the component. Each WD component is a separate Java


    program. The source for this java program is generated automatically. This source code
    contains places, so called hooks, to extend the standard coding.

    Each component contains out of serveral interfaces and controllers.

    There are several types of controllers

    • Component Controller - controls the component

    Sameers108@saudia.com SAP Web Dynpro for java


    SAP Web Dynpro for Java NWDS-WebDynpro Program

    • View Controller - controls the view

    In addition to the standard hook methods the programmer can also declare controller
    instance methods (in the methods tab of the controller) and define the method and its
    parameters.

    Also in addition each controller contains at the end of the source code a coding block in
    which the programmer can put any code and member variables he likes.

    2.3. Context

    Each controller has one hierarchical data storage structure called context .

    The context is a local memory which allows to store hierarchical data for a specific WD
    component, e.g. view and / or controller.

    Each context has a root element. Under that root element the other objects are stored.

    The context of each component can be connected.

    2.4. Development Components

    If the developer would like to structure his work over several project and / or work
    distributed on several project he can use "Development Components".

    Within DC's you can add dependencies via "DC Definition" -> Used DC -> Add
    Dependency

    Dependent DC's are available at design time, to make then available at runtime on the
    server they need to be deployed to the server.

    Select your DC, right mouse click, select Development Component-> Build. This will
    make the DC available at design time.

    Select your DC, right mouse click, select Development Component-> Deploy. This will
    make the DC available at runtime on the server.

    Development Components (DC) are normal project which can create via New ->
    Development Component.

    DC can define the public API, e.g. which elements are avaiable for other development
    components. E.g. if you define a structure type in one development component you can
    add it ot the public API via right mouse click -> Add to public part.

    Tip

    Sameers108@saudia.com SAP Web Dynpro for java


    SAP Web Dynpro for Java NWDS-WebDynpro Program

    If you add a structure to the public part then you have also to make the simple types
    available .

    Model, e.g. access to external data sources, are usually create as DC.

    Sameers108@saudia.com SAP Web Dynpro for java

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