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package com.mandi.springmvc; |
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import java.io.IOException; |
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import java.util.Iterator; |
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import java.util.Map; |
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import javax.faces.FacesException; |
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import javax.faces.FactoryFinder; |
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import javax.faces.application.ViewHandler; |
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import javax.faces.component.UIViewRoot; |
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import javax.faces.context.FacesContext; |
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import javax.faces.context.FacesContextFactory; |
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import javax.faces.event.PhaseEvent; |
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import javax.faces.event.PhaseId; |
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import javax.faces.event.PhaseListener; |
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import javax.faces.lifecycle.Lifecycle; |
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import javax.faces.lifecycle.LifecycleFactory; |
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import javax.servlet.http.HttpServletRequest; |
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import javax.servlet.http.HttpServletResponse; |
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import org.springframework.web.servlet.support.RequestContextUtils; |
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import org.springframework.web.servlet.view.AbstractUrlBasedView; |
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public class FaceletView extends AbstractUrlBasedView { |
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private Lifecycle facesLifecycle; |
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@Override |
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public void afterPropertiesSet() throws Exception { |
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super.afterPropertiesSet(); |
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facesLifecycle = createFacesLifecycle(); |
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} |
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@Override |
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protected void renderMergedOutputModel(Map<String, Object> model, |
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HttpServletRequest request, HttpServletResponse response) throws Exception { |
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logger.info("View rendering start"); |
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FacesContext facesContext = createFacesContext(request, response); |
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populateRequestMap(facesContext, model); |
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FaceletView.notifyBeforeListeners(PhaseId.RESTORE_VIEW, facesLifecycle, facesContext); |
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ViewHandler viewHandler = facesContext.getApplication().getViewHandler(); |
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viewHandler.initView(facesContext); |
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UIViewRoot viewRoot = viewHandler.createView(facesContext, getUrl()); |
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viewRoot.setLocale(RequestContextUtils.getLocale(request)); |
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viewRoot.setTransient(true); |
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facesContext.setViewRoot(viewRoot); |
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FaceletView.notifyAfterListeners(PhaseId.RESTORE_VIEW, facesLifecycle, facesContext); |
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facesContext.setViewRoot(viewRoot); |
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facesContext.renderResponse(); |
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try { |
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FaceletView.notifyBeforeListeners(PhaseId.RENDER_RESPONSE, facesLifecycle, facesContext); |
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logger.debug("Asking view handler to render view"); |
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facesContext.getApplication().getViewHandler().renderView(facesContext, viewRoot); |
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FaceletView.notifyAfterListeners(PhaseId.RENDER_RESPONSE, facesLifecycle, facesContext); |
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} |
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catch (IOException e) { |
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logger.error("An I/O error occurred during view rendering"); |
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throw new FacesException("An I/O error occurred during view rendering", e); |
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} finally { |
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logger.info("View rendering complete"); |
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facesContext.responseComplete(); |
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facesContext.release(); |
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} |
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} |
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@SuppressWarnings("rawtypes") |
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private void populateRequestMap(FacesContext facesContext, Map model) { |
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Iterator i = model.keySet().iterator(); |
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while (i.hasNext()) { |
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String key = i.next().toString(); |
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facesContext.getExternalContext().getRequestMap().put(key, model.get(key)); |
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} |
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} |
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private FacesContext createFacesContext(HttpServletRequest request, HttpServletResponse response) { |
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FacesContextFactory facesContextFactory = (FacesContextFactory) FactoryFinder.getFactory(FactoryFinder.FACES_CONTEXT_FACTORY); |
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return facesContextFactory.getFacesContext(getServletContext(), request, response, facesLifecycle); |
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} |
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private Lifecycle createFacesLifecycle() { |
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LifecycleFactory lifecycleFactory = (LifecycleFactory) FactoryFinder.getFactory(FactoryFinder.LIFECYCLE_FACTORY); |
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return lifecycleFactory.getLifecycle(LifecycleFactory.DEFAULT_LIFECYCLE); |
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} |
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public static void notifyAfterListeners(PhaseId phaseId, |
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Lifecycle lifecycle, FacesContext context) { |
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PhaseEvent afterPhaseEvent = new PhaseEvent(context, phaseId, lifecycle); |
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for (int i = 0; i < lifecycle.getPhaseListeners().length; i++) { |
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PhaseListener listener = lifecycle.getPhaseListeners()[i]; |
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if (listener.getPhaseId() == phaseId |
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|| listener.getPhaseId() == PhaseId.ANY_PHASE) { |
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listener.afterPhase(afterPhaseEvent); |
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} |
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} |
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} |
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public static void notifyBeforeListeners(PhaseId phaseId, |
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Lifecycle lifecycle, FacesContext context) { |
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PhaseEvent beforePhaseEvent = new PhaseEvent(context, phaseId, |
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lifecycle); |
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for (int i = 0; i < lifecycle.getPhaseListeners().length; i++) { |
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PhaseListener listener = lifecycle.getPhaseListeners()[i]; |
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if (listener.getPhaseId() == phaseId |
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|| listener.getPhaseId() == PhaseId.ANY_PHASE) { |
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listener.beforePhase(beforePhaseEvent); |
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} |
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} |
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} |
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} |