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

Package org.apache.beehive.netui.pageflow

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

org.apache.beehive.netui.pageflow.SharedFlowController
Base "shared flow" class for controller logic, exception handlers, and state that can be shared by any number of page flows. A shared flow is not a page flow; it is used by page flows, but never becomes the "current page flow" (see {@link PageFlowController} for information on page flows and the "current page flow").The class is configured through the {@link org.apache.beehive.netui.pageflow.annotations.Jpf.Controller @Jpf.Controller} annotation.

A shared flow comes into existance in one of two ways:
- A page flow is hit, and the page flow refers to the shared flow in its {@link org.apache.beehive.netui.pageflow.annotations.Jpf.Controller#sharedFlowRefs sharedFlowRefs}annotation attribute, or
- Any page flow is hit, and the <default-shared-flow-refs> element in /WEB-INF/beehive-netui-config.xml declares that this shared flow will be used by all page flows in the web application.
When a shared flow is created, it is stored in the user session. It is only removed through a call to {@link #remove} or through a call to {@link PageFlowUtils#removeSharedFlow}.

Shared flow actions are defined with action methods or action annotations that determine the next URI to be displayed, after optionally performing arbitrary logic. A page or page flow can raise a shared flow action using the pattern "shared-flow-name.action-name". The shared flow name is the one chosen by the page flow in {@link org.apache.beehive.netui.pageflow.annotations.Jpf.SharedFlowRef#name name}on {@link org.apache.beehive.netui.pageflow.annotations.Jpf.SharedFlowRef @Jpf.SharedFlowRef}.

A referenced shared flow gets the chance to handle any uncaught page flow exception. It declares its exception handling through {@link org.apache.beehive.netui.pageflow.annotations.Jpf.Controller#catches catches}on {@link org.apache.beehive.netui.pageflow.annotations.Jpf.Controller @Jpf.Controller}.

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

There may only be one shared flow in any package.
@see PageFlowController

            Collection/*< SharedFlowController >*/ sharedFlows =
                    ( ( PageFlowController ) originalFlowController ).getSharedFlows().values();
            
            for ( Iterator ii = sharedFlows.iterator(); ii.hasNext(); )  
            {
                SharedFlowController sf = ( SharedFlowController ) ii.next();
                if ( checkForExceptionConfig( sf, exClass, request ) ) return sf;
            }
        }
        
        assert request instanceof HttpServletRequest : request.getClass().getName();
        SharedFlowController globalApp = PageFlowUtils.getGlobalApp( ( HttpServletRequest ) request );
        if ( globalApp != null && checkForExceptionConfig( globalApp, exClass, request ) ) return globalApp;
        return null;
    }

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            Collection/*< SharedFlowController >*/ sharedFlows =
                    ( ( PageFlowController ) originalFlowController ).getSharedFlows().values();
            
            for ( Iterator ii = sharedFlows.iterator(); ii.hasNext(); )  
            {
                SharedFlowController sf = ( SharedFlowController ) ii.next();
                if ( checkForExceptionConfig( sf, exClass, request ) ) return sf;
            }
        }
        
        assert request instanceof HttpServletRequest : request.getClass().getName();
        SharedFlowController globalApp = PageFlowUtils.getGlobalApp( ( HttpServletRequest ) request );
        if ( globalApp != null && checkForExceptionConfig( globalApp, exClass, request ) ) return globalApp;
        return null;
    }

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            Collection/*< SharedFlowController >*/ sharedFlows =
                    ( ( PageFlowController ) originalFlowController ).getSharedFlows().values();
            
            for ( Iterator ii = sharedFlows.iterator(); ii.hasNext(); )  
            {
                SharedFlowController sf = ( SharedFlowController ) ii.next();
                if ( checkForExceptionConfig( sf, exClass, request ) ) return sf;
            }
        }
        
        assert request instanceof HttpServletRequest : request.getClass().getName();
        SharedFlowController globalApp = PageFlowUtils.getGlobalApp( ( HttpServletRequest ) request );
        if ( globalApp != null && checkForExceptionConfig( globalApp, exClass, request ) ) return globalApp;
        return null;
    }

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            Collection/*< SharedFlowController >*/ sharedFlows =
                    ( ( PageFlowController ) originalFlowController ).theSharedFlows().values();
            
            for ( Iterator ii = sharedFlows.iterator(); ii.hasNext(); )  
            {
                SharedFlowController sf = ( SharedFlowController ) ii.next();
                if ( checkForExceptionConfig( sf, exClass, request ) ) return sf;
            }
        }
        
        assert request instanceof HttpServletRequest : request.getClass().getName();
        SharedFlowController globalApp = PageFlowUtils.getGlobalApp( ( HttpServletRequest ) request );
        if ( globalApp != null && checkForExceptionConfig( globalApp, exClass, request ) ) return globalApp;
        return null;
    }

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