Asynchronous Views

In Web Dynpro, an asynchronous mode for the application ui parts, the views, is available, for example for application integration where the integrated application comes with high data volume. Users can interact with the screen while the application, or parts of it, is processing data. There can be one or more applications be integrated into the main Web Dynpro application, overall the limit is five applications.

User Interface Element

Synchronous view processing is the default behaviour in Web Dynpro. Using user interface element ApplicationContainer, a layout container for combining the UI elements for the integrated application - handled asynchronously lateron - is defined.

More information: UI Element ApplicationContainer

Component Hierarchy

For a clear separation of the application parts running synchronously, and the ones that are running asynchronously, the component concept in Web Dynpro is used: The main Web Dynpro component with the synchronous parts is the embedding component, it contains the user elements and data bindings the user needs lateron for working in the screen, while in the asynchronous part other data is processed. For the asynchronously processed data, an embedded component is defined containing the views, context data and methods for the integrated application. The interface IWDApplicationHandle handles the programmatic interaction between the embedding and the embedded application.

Main Interfaces and Classes

Embedding Component

Classes and Interfaces	Usage
public classInternalEmbeddingComp	Extendscom.sap.tc.webdynpro.progmodel.gci.impl.GCIComponentController implements IprivateEmbeddingComp, com.sap.tc.webdynpro.progmodel.gci.IGCIViewDelegate
public classInternalEmbeddingCompView	Extendscom.sap.tc.webdynpro.progmodel.gci.impl.GCIViewController implementsIprivateEmbeddingCompView, com.sap.tc.webdynpro.progmodel.gci.IGCIViewDelegate
public classInternalEmbeddingWindow	Extendscom.sap.tc.webdynpro.progmodel.gci.impl.GCIWindowController implements IprivateEmbeddingWindow, com.sap.tc.webdynpro.progmodel.gci.IGCIViewDelegate
public classInternalPopupWindow	Extendscom.sap.tc.webdynpro.progmodel.gci.impl.GCIWindowController implements IprivatePopupWindow, com.sap.tc.webdynpro.progmodel.gci.IGCIViewDelegate
public interfaceIConstantEmbeddingComp	Provides constants relevant on Web Dynpro component level
public interfaceIExternalEmbeddingCompInterface	Extendscom.sap.tc.webdynpro.progmodel.api.IWDExternalControllerInterface
public interface IPrivateEmbeddingComp	Extends com.sap.tc.<wdj_project>.embeddingapp.comp.wdp.IPublicEmbeddingComp
public interface IPrivateEmbeddingCompView	Extends com.sap.tc.<wdj_project>.embeddingapp.comp.wdp.IPublicEmbeddingCompView
public interface IPrivateEmbeddingWindow	Extendscom.sap.tc.<wdj_project>.embeddingapp.comp.wdp.IPublicEmbeddingWindow
public interface IPrivatePopupWindow	Extends com.sap.tc.<wdj_project>.embeddingapp.comp.wdp.IPublicPopupWindow
public interface IPublicEmbeddingComp	Provides access to the generic component API IWDComponent wdGetAPI()
public interfaceIPublicEmbeddingWindow	Provides access to the generic API of this controller IWDWindowController wdGetAPI()

Embedded Component

public class EmbeddedComp	Importscom.sap.tc.<wdj_project>.async.embeddedapp.comp.wdp.IPrivateEmbeddedComp
public class EmbeddedCompView	Imports com.sap.tc.<wdj_project>.async.embeddedapp.comp.wdp.IPrivateEmbeddedCompView com.sap.tc.<wdj_project>.async.embeddedapp.comp.wdp.IPrivateEmbeddedCompView.IContextElement com.sap.tc.<wdj_project>.async.types.TerminationMode com.sap.tc.<wdj_project>.async.utility.LogUtility com.sap.tc.webdynpro.progmodel.api.IWDProgressMonitor com.sap.tc.webdynpro.progmodel.api.IWDApplicationEnvironment.WDActionExecutionMode com.sap.tc.webdynpro.progmodel.repository.IWDWindowInfo com.sap.tc.webdynpro.services.session.api.IWDWindow
public class EmbeddedWindow	Imports com.sap.tc.<wdj_project>.async.embeddedapp.comp.wdp.IPrivateEmbeddedWindow com.sap.tc.<wdj_project>.async.utility.LogUtility
public class PopupView	Imports com.sap.tc.<wdj_project>.async.embeddedapp.comp.wdp.IPrivatePopupView
public class PopupWindow	Imports com.sap.tc.wd.test.async.embeddedapp.comp.wdp.IPrivatePopupWindow com.sap.tc.webdynpro.clientserver.uielib.standard.api.IWDButton com.sap.tc.webdynpro.clientserver.uielib.standard.api.IWDWindowViewElement com.sap.tc.webdynpro.clientserver.uielib.standard.api.WDButtonDesign com.sap.tc.webdynpro.progmodel.api.IWDAction
public class Terminated	Imports com.sap.tc.<wdj_project>.async.embeddedapp.comp.wdp.IPrivateTerminated

Portal Integration

Web Dynpro applications with asynchronous views run standalone, and also integration into SAP Enterprise Portal is supported.

More information: Enabling the Portal to Process Asynchronous Web Dynpro Views