Examples of org.apache.beehive.netui.pageflow.PageFlowController

Package org.apache.beehive.netui.pageflow

Examples of org.apache.beehive.netui.pageflow.PageFlowController

org.apache.beehive.netui.pageflow.PageFlowController

Base class for controller logic, exception handlers, and state associated with a particular web directory path. The class is configured through the {@link org.apache.beehive.netui.pageflow.annotations.Jpf.Controller @Jpf.Controller} annotation.

When a page flow request (the page flow URI itself, or any ".do" or page URI in the directory path), arrives, an instance of the associated PageFlowController class is set as the current page flow, and remains stored in the session until a different one becomes active ("long lived" page flows stay in the session indefinitely; see {@link org.apache.beehive.netui.pageflow.annotations.Jpf.Controller#longLived longLived}on {@link org.apache.beehive.netui.pageflow.annotations.Jpf.Controller @Jpf.Controller}).

The page flow class handles actions that are most commonly raised by user interaction with pages. The actions are handled by action methods or action annotations that determine the next URI to be displayed, after optionally performing arbitrary logic.

If the PageFlowController is a "nested page flow" ( {@link org.apache.beehive.netui.pageflow.annotations.Jpf.Controller#nested nested} is set to trueon {@link org.apache.beehive.netui.pageflow.annotations.Jpf.Controller @Jpf.Controller}), then this is a reusable, modular flow that can be "nested" during other flows. It has entry points (actions with optional form bean arguments), and exit points ( {@link org.apache.beehive.netui.pageflow.annotations.Jpf.Forward @Jpf.Forward}, {@link org.apache.beehive.netui.pageflow.annotations.Jpf.SimpleAction @Jpf.SimpleAction}, or {@link org.apache.beehive.netui.pageflow.annotations.Jpf.ConditionalForward @Jpf.ConditionalForward} annotationsthat have returnAction attributes).

The page flow class also handles exceptions thrown by actions or during page execution (see {@link org.apache.beehive.netui.pageflow.annotations.Jpf.Controller#catches catches} on{@link org.apache.beehive.netui.pageflow.annotations.Jpf.Controller @Jpf.Controller}). Unhandled exceptions are handled in order by declared {@link SharedFlowController}s (see {@link org.apache.beehive.netui.pageflow.annotations.Jpf.Controller#sharedFlowRefs sharedFlowRefs} on{@link org.apache.beehive.netui.pageflow.annotations.Jpf.Controller @Jpf.Controller}).

Properties in the current page flow instance can be accessed from JSP 2.0-style expressions like this one: ${pageFlow.someProperty}.

There may only be one page flow in any package.
@see SharedFlowController

    }


    public static final PageFlowController getPageFlow(ServletRequest request, ServletResponse response) {
        assert request instanceof HttpServletRequest;


        PageFlowController jpf = PageFlowUtils.getCurrentPageFlow((HttpServletRequest)request);
        if(jpf != null)
            return jpf;
        else {
            // @todo: i18n
            RuntimeException re = new RuntimeException("There is no current PageFlow for the expression.");

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            try
            {
                ServletContext servletContext = ( ServletContext ) extContext;
                FlowControllerFactory fcFactory = FlowControllerFactory.get( servletContext );
                PageFlowController pfc = fcFactory.getPageFlowForRequest( new RequestContext( httpRequest, httpResponse ) );
                PageFlowUtils.getCurrentPageFlow( httpRequest );
    
                if ( pfc != null )
                {
                    if ( outcome != null )

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        //
        // Save the current view state in the PreviousPageInfo structure of the current page flow.
        //
        if ( request != null )
        {
            PageFlowController curPageFlow = PageFlowUtils.getCurrentPageFlow( request );
            
            if ( curPageFlow != null && ! curPageFlow.isPreviousPageInfoDisabled() )
            {
                //
                // Only save the previous page info if the JSF view-ID is the same as the current forward path.
                // Note that we strip the file extension from the view-ID -- different JSF implementations give
                // us different things (foo.jsp vs. foo.faces).
                //
                viewID = FileUtils.stripFileExtension( viewID );
                String currentForwardPath = FileUtils.stripFileExtension( curPageFlow.getCurrentForwardPath() );
                if ( viewID.equals( currentForwardPath ) )
                {
                    PreviousPageInfo prevPageInfo = curPageFlow.getCurrentPageInfo();
                    FacesBackingBean backingBean = InternalUtils.getFacesBackingBean( request );
                    prevPageInfo.setClientState( new PageClientState( viewRoot, backingBean ) );
                }
            }
        }

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        // Save the current view state in the PreviousPageInfo structure of the current page flow.
        //
        if ( request != null )
        {
            ServletContext servletContext = ( ServletContext ) externalContext.getContext();
            PageFlowController curPageFlow = PageFlowUtils.getCurrentPageFlow( request, servletContext );
            
            if ( curPageFlow != null && ! curPageFlow.isPreviousPageInfoDisabled() )
            {
                //
                // Only save the previous page info if the JSF view-ID is the same as the current forward path.
                // Note that we strip the file extension from the view-ID -- different JSF implementations give
                // us different things (foo.jsp vs. foo.faces).
                //
                viewID = FileUtils.stripFileExtension( viewID );
                String currentForwardPath = FileUtils.stripFileExtension( curPageFlow.getCurrentForwardPath() );
                if ( viewID.equals( currentForwardPath ) )
                {
                    PreviousPageInfo prevPageInfo = curPageFlow.getCurrentPageInfo();
                    FacesBackingBean backingBean = InternalUtils.getFacesBackingBean( request, servletContext );
                    prevPageInfo.setClientState( new PageClientState( viewRoot, backingBean ) );
                }
            }
        }

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                //
                // We only forward to Page Flow actions if there's a page flow appropriate for this request.
                //
                ServletContext servletContext = ( ServletContext ) extContext;
                FlowControllerFactory fcFactory = FlowControllerFactory.get( servletContext );
                PageFlowController pfc = fcFactory.getPageFlowForRequest( new RequestContext( httpRequest, httpResponse ) );
    
                if ( pfc != null )
                {
                    if ( outcome != null )
                    {

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                //
                // We only forward to Page Flow actions if there's a page flow appropriate for this request.
                //
                ServletContext servletContext = ( ServletContext ) extContext;
                FlowControllerFactory fcFactory = FlowControllerFactory.get( servletContext );
                PageFlowController pfc = fcFactory.getPageFlowForRequest( new RequestContext( httpRequest, httpResponse ) );
    
                if ( pfc != null )
                {
                    if ( outcome != null )
                    {

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     * @return the page flow
     */
    public static PageFlowController getPageFlow(ServletRequest request, ServletResponse response) {
        assert request instanceof HttpServletRequest;


        PageFlowController jpf = PageFlowUtils.getCurrentPageFlow((HttpServletRequest)request);
        if(jpf != null)
            return jpf;
        else {
            String message = "There is no current Page Flow!";
            LOGGER.error(message);

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        // Save the current view state in the PreviousPageInfo structure of the current page flow.
        //
        if ( request != null )
        {
            ServletContext servletContext = ( ServletContext ) externalContext.getContext();
            PageFlowController curPageFlow = PageFlowUtils.getCurrentPageFlow( request, servletContext );
            
            if ( curPageFlow != null && ! curPageFlow.isPreviousPageInfoDisabled() )
            {
                //
                // Only save the previous page info if the JSF view-ID is the same as the current forward path.
                // Note that we strip the file extension from the view-ID -- different JSF implementations give
                // us different things (foo.jsp vs. foo.faces).
                //
                viewID = FileUtils.stripFileExtension( viewID );
                String currentForwardPath = FileUtils.stripFileExtension( curPageFlow.getCurrentForwardPath() );
                if ( viewID.equals( currentForwardPath ) )
                {
                    PreviousPageInfo prevPageInfo = curPageFlow.theCurrentPageInfo();
                    FacesBackingBean backingBean = InternalUtils.getFacesBackingBean( request, servletContext );
                    prevPageInfo.setClientState( new PageClientState( viewRoot, backingBean ) );
                }
            }
        }

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org.apache.beehive.netui.pageflow.internal.CachedPageFlowInfo

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org.apache.beehive.netui.util.internal.cache.ClassLevelCache

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