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From craig...@apache.org
Subject svn commit: r209652 - /struts/shale/trunk/core-library/src/java/org/apache/shale/remote/RemoteCommand.java
Date Thu, 07 Jul 2005 21:35:04 GMT
Author: craigmcc
Date: Thu Jul  7 14:35:02 2005
New Revision: 209652

URL: http://svn.apache.org/viewcvs?rev=209652&view=rev
Log:
Update the command that intercepts remoting requests to optionally (but on by
default) create a JSF FacesContext for the current request.  Among other things,
this allows the use of programmatic value binding and method binding expression
evaluations during the creation of the corresponding response.

Modified:
    struts/shale/trunk/core-library/src/java/org/apache/shale/remote/RemoteCommand.java

Modified: struts/shale/trunk/core-library/src/java/org/apache/shale/remote/RemoteCommand.java
URL: http://svn.apache.org/viewcvs/struts/shale/trunk/core-library/src/java/org/apache/shale/remote/RemoteCommand.java?rev=209652&r1=209651&r2=209652&view=diff
==============================================================================
--- struts/shale/trunk/core-library/src/java/org/apache/shale/remote/RemoteCommand.java (original)
+++ struts/shale/trunk/core-library/src/java/org/apache/shale/remote/RemoteCommand.java Thu
Jul  7 14:35:02 2005
@@ -22,6 +22,13 @@
 import java.util.ArrayList;
 import java.util.List;
 import java.util.regex.Pattern;
+import javax.faces.FactoryFinder;
+import javax.faces.application.Application;
+import javax.faces.application.ApplicationFactory;
+import javax.faces.context.FacesContext;
+import javax.faces.context.FacesContextFactory;
+import javax.faces.lifecycle.Lifecycle;
+import javax.faces.lifecycle.LifecycleFactory;
 import javax.servlet.http.HttpServletRequest;
 import org.apache.commons.chain.Catalog;
 import org.apache.commons.chain.CatalogFactory;
@@ -53,6 +60,15 @@
 
 
     /**
+     * <p>The JavaServer Faces lifecycle identifier of the <code>Lifecycle</code>
+     * instance we will be using.</p>
+     */
+    private String lifecycleId = LifecycleFactory.DEFAULT_LIFECYCLE;
+    public String getLifecycleId() { return this.lifecycleId; }
+    public void setLifecycleId(String lifecycleId) { this.lifecycleId = lifecycleId; }
+
+
+    /**
      * <p>Comma-delimited list of regular expression pattern(s) the context
      * relative URI of this request must match in order to be processed.  The
      * default value matches any request that ends with ".remote".</p>
@@ -62,6 +78,18 @@
     public void setPatterns(String patterns) { this.patterns = patterns; }
 
 
+    /**
+     * <p>Flag indicating whether or not we should construct a
+     * JavaServer Faces <code>FacesContext</code> for each request.
+     * Default value is <code>true</code>.</p>
+     */
+    private boolean usingFacesContext = true;
+    public boolean isUsingFacesContext() { return this.usingFacesContext; }
+    public void setUsingFacesContext(boolean usingFacesContext) {
+        this.usingFacesContext = usingFacesContext;
+    }
+
+
     // --------------------------------------------------------- Command Methods
 
 
@@ -83,6 +111,7 @@
     public boolean execute(Context context) throws Exception {
 
         // Calculate the context-relative URI for this request
+        // FIXME - support portlet environments also
         ShaleWebContext swcontext = (ShaleWebContext) context;
         HttpServletRequest request = swcontext.getRequest();
         String servletPath = request.getServletPath();
@@ -108,6 +137,15 @@
             return true;
         }
 
+        // If requested, create a FacesContext for this request
+        FacesContext facesContext = null;
+        if (isUsingFacesContext()) {
+            facesContext = facesContextFactory().getFacesContext(swcontext.getContext(),
+                                                                 swcontext.getRequest(),
+                                                                 swcontext.getResponse(),
+                                                                 lifecycle());
+        }
+
         // Construct a RemoteContext and execute this command with it
         // FIXME - do we want to carry over attributes from swcontext too?
         RemoteContext rcontext =
@@ -115,6 +153,14 @@
                                    swcontext.getRequest(),
                                    swcontext.getResponse());
         command.execute(rcontext);
+
+        // If we created a FacesContext for this request, clean it up appropriately
+        if (facesContext != null) {
+            facesContext.responseComplete(); // Not sure this is needed since we
+                                             // did not actually run the lifecycle
+        }
+
+        // Return true to indicate this chain has been completed
         return true;
 
     }
@@ -124,6 +170,28 @@
 
 
     /**
+     * <p>The cached <code>Application</code> for this application.</p>
+     */
+    private Application application = null;
+
+
+    /**
+     * <p>Return the <code>Application</code> for this application,
+     * caching it upon first retrieval.</p>
+     */
+    private Application application() {
+
+        if (application == null) {
+            ApplicationFactory applicationFactory = (ApplicationFactory)
+              FactoryFinder.getFactory(FactoryFinder.APPLICATION_FACTORY);
+            application = applicationFactory.getApplication();
+        }
+        return application;
+
+    }
+
+
+    /**
      * <p>The cached <code>Catalog</code> instance in which we will look
      * up commands to be executed.</p>
      */
@@ -140,6 +208,49 @@
             catalog = CatalogFactory.getInstance().getCatalog(catalogName);
         }
         return catalog;
+
+    }
+
+
+    /**
+     * <p>The cached <code>FacesContextFactory</code> for this application.</p>
+     */
+    private FacesContextFactory facesContextFactory = null;
+
+
+    /**
+     * <p>Return the <code>FacesContextFactory</code> for this application,
+     * caching it upon first retrieval.</p>
+     */
+    private FacesContextFactory facesContextFactory() {
+
+        if (facesContextFactory == null) {
+            facesContextFactory = (FacesContextFactory)
+              FactoryFinder.getFactory(FactoryFinder.FACES_CONTEXT_FACTORY);
+        }
+        return facesContextFactory;
+
+    }
+
+
+    /**
+     * <p>The cached <code>Lifecycle</code> for this application.</p>
+     */
+    private Lifecycle lifecycle = null;
+
+
+    /**
+     * <p>Return the <code>Lifecycle</code> for this application,
+     * caching it upon first retrieval.</p>
+     */
+    private Lifecycle lifecycle() {
+
+        if (lifecycle == null) {
+            LifecycleFactory lifecycleFactory = (LifecycleFactory)
+              FactoryFinder.getFactory(FactoryFinder.LIFECYCLE_FACTORY);
+            lifecycle = lifecycleFactory.getLifecycle(getLifecycleId());
+        }
+        return lifecycle;
 
     }
 



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