Examples of org.apache.myfaces.view.facelets.pool.ViewPool

Package org.apache.myfaces.view.facelets.pool

Examples of org.apache.myfaces.view.facelets.pool.ViewPool

org.apache.myfaces.view.facelets.pool.ViewPool
This class defines the necessary operations that a view pool should comply in order to be used by MyFaces.
A View Pool is a set of initialized views that are kept ready to use. The idea is reset and reuse views taking advantage of existing JSF 2.0 Partial State Saving algorithm with some small additions to component's saveState() method.

This technique works by these reasons:
- A view is composed by many small objects that are created multiple times per each request, and the time spent creating these objects is usually larger than the time used to traverse the component tree.
- The structure of a view usually does not change over application lifetime.
- The "delta state" or in other words the elements that change in view are small compared with the elements that does not change.

        }
    }
    
    public void storeViewStructureMetadata(FacesContext context, UIViewRoot root)
    {
        ViewPool viewPool = getViewPool(context, root);
        if (viewPool != null)
        {
            FaceletState faceletState = (FaceletState) root.getAttributes().get(
                    ComponentSupport.FACELET_STATE_INSTANCE);
            boolean isDynamic = faceletState != null ? faceletState.isDynamic() : false;
            if (!isDynamic)
            {
                viewPool.storeStaticViewStructureMetadata(context, root, faceletState);            
            }
            else
            {
                viewPool.storeDynamicViewStructureMetadata(context, root, faceletState);
            }
        }
    }

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    }
    
    public ViewStructureMetadata retrieveViewStructureMetadata(FacesContext context,
            UIViewRoot root)
    {
        ViewPool viewPool = getViewPool(context, root);
        FaceletState faceletState = (FaceletState) root.getAttributes().get(
                ComponentSupport.FACELET_STATE_INSTANCE);
        boolean isDynamic = faceletState != null ? faceletState.isDynamic() : false;
        if (!isDynamic)
        {
            return viewPool.retrieveStaticViewStructureMetadata(context, root);
        }
        else
        {
            return viewPool.retrieveDynamicViewStructureMetadata(context, root, faceletState);
        }
    }

View Full Code Here

        }
    }
    
    public void pushResetableView(FacesContext context, UIViewRoot view, FaceletState faceletViewState)
    {
        ViewPool viewPool = getViewPool(context, view);
        boolean isDynamic = faceletViewState != null ? faceletViewState.isDynamic() : false;
        if (!isDynamic)
        {
            clearTransientAndNonFaceletComponentsForStaticView(context, view);
            viewPool.pushStaticStructureView(context, view);
        }
        else
        {
            ViewStructureMetadata viewStructureMetadata = viewPool.retrieveDynamicViewStructureMetadata(
                context, view, faceletViewState);
            if (viewStructureMetadata != null)
            {
                clearTransientAndNonFaceletComponentsForDynamicView(context, view, viewStructureMetadata);
                viewPool.pushDynamicStructureView(context, view, faceletViewState);
            }
        }
    }

View Full Code Here

        }
    }
    
    public void pushPartialView(FacesContext context, UIViewRoot view, FaceletState faceletViewState, int count)
    {
        ViewPool viewPool = getViewPool(context, view);
        
        if (viewPool.isWorthToRecycleThisView(context, view))
        {
            ViewStructureMetadata viewStructureMetadata = null;
            if (faceletViewState == null)
            {
                viewStructureMetadata = viewPool.retrieveStaticViewStructureMetadata(context, view);
            }
            else
            {
                viewStructureMetadata = viewPool.retrieveDynamicViewStructureMetadata(
                    context, view, faceletViewState);
            }
            if (viewStructureMetadata != null)
            {
                ClearPartialTreeContext ptc = new ClearPartialTreeContext();
                // add partial structure view to the map.
                clearTransientAndRemoveNonResetableComponents(context, ptc, view, viewStructureMetadata);
                int reusableCount = ptc.getCount();
                float factor = ((float)reusableCount) / ((float)count);
                if (factor > 0.3f)
                {
                    viewPool.pushPartialStructureView(context, view);
                }
            }
        }        
    }

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    private RestoreViewFromPoolResult tryRestoreViewFromCache(FacesContext context, UIViewRoot view)
    {
        if (_viewPoolProcessor != null)
        {
            ViewPool viewPool = _viewPoolProcessor.getViewPool(context, view);
            if (viewPool != null)
            {
                ViewStructureMetadata metadata = viewPool.retrieveStaticViewStructureMetadata(context, view);
                if (metadata != null)
                {
                    ViewEntry entry = viewPool.popStaticOrPartialStructureView(context, view);
                    if (entry != null)
                    {
                        _viewPoolProcessor.cloneAndRestoreView(context, view, entry, metadata);
                        return entry.getResult();
                    }

View Full Code Here

                    states = (Map<String, Object>) state[1];
                    faceletViewState = UIComponentBase.restoreAttachedState(
                            context,states.get(ComponentSupport.FACELET_STATE_INSTANCE));
                    if (faceletViewState != null && _viewPoolProcessor != null)
                    {
                        ViewPool viewPool = _viewPoolProcessor.getViewPool(context, view);
                        if (viewPool != null)
                        {
                            ViewStructureMetadata viewMetadata = viewPool.retrieveDynamicViewStructureMetadata(
                                context, view, (FaceletState) faceletViewState);
                            if (viewMetadata != null)
                            {
                                ViewEntry entry = viewPool.popDynamicStructureView(context, view,
                                        (FaceletState) faceletViewState);
                                if (entry != null)
                                {
                                    skipBuildView = true;
                                    _viewPoolProcessor.cloneAndRestoreView(context, view, entry, viewMetadata);

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    private RestoreViewFromPoolResult tryRestoreViewFromCache(FacesContext context, UIViewRoot view)
    {
        if (_viewPoolProcessor != null)
        {
            ViewPool viewPool = _viewPoolProcessor.getViewPool(context, view);
            if (viewPool != null)
            {
                ViewStructureMetadata metadata = viewPool.retrieveStaticViewStructureMetadata(context, view);
                if (metadata != null)
                {
                    ViewEntry entry = viewPool.popStaticOrPartialStructureView(context, view);
                    if (entry != null)
                    {
                        _viewPoolProcessor.cloneAndRestoreView(context, view, entry, metadata);
                        return entry.getResult();
                    }

View Full Code Here

                    states = (Map<String, Object>) state[1];
                    faceletViewState = UIComponentBase.restoreAttachedState(
                            context,states.get(ComponentSupport.FACELET_STATE_INSTANCE));
                    if (faceletViewState != null && _viewPoolProcessor != null)
                    {
                        ViewPool viewPool = _viewPoolProcessor.getViewPool(context, view);
                        if (viewPool != null)
                        {
                            ViewStructureMetadata viewMetadata = viewPool.retrieveDynamicViewStructureMetadata(
                                context, view, (FaceletState) faceletViewState);
                            if (viewMetadata != null)
                            {
                                ViewEntry entry = viewPool.popDynamicStructureView(context, view,
                                        (FaceletState) faceletViewState);
                                if (entry != null)
                                {
                                    skipBuildView = true;
                                    _viewPoolProcessor.cloneAndRestoreView(context, view, entry, viewMetadata);

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Related Classes of org.apache.myfaces.view.facelets.pool.ViewPool

org.apache.myfaces.application.ActionListenerImpl

org.apache.myfaces.view.facelets.DefaultFaceletsStateManagementStrategy

org.apache.myfaces.view.facelets.FaceletViewDeclarationLanguage

org.apache.myfaces.view.facelets.ViewPoolProcessor

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