svn commit: r1038363 - in /myfaces/extensions/cdi/trunk/jee-modules/jsf20-module/impl/src/main/java/org/apache/myfaces/extensions/cdi/jsf2/impl/windowhandler: ClientsideWindowHandlerFilter.java WindowIdServletRequestWrapper.java

[ja...@apache.org]

Author: jakobk
Date: Tue Nov 23 22:30:41 2010
New Revision: 1038363

URL: http://svn.apache.org/viewvc?rev=1038363&view=rev
Log:
prototype for new windowId handling technique

Added:
    myfaces/extensions/cdi/trunk/jee-modules/jsf20-module/impl/src/main/java/org/apache/myfaces/extensions/cdi/jsf2/impl/windowhandler/ClientsideWindowHandlerFilter.java
    myfaces/extensions/cdi/trunk/jee-modules/jsf20-module/impl/src/main/java/org/apache/myfaces/extensions/cdi/jsf2/impl/windowhandler/WindowIdServletRequestWrapper.java

Added: myfaces/extensions/cdi/trunk/jee-modules/jsf20-module/impl/src/main/java/org/apache/myfaces/extensions/cdi/jsf2/impl/windowhandler/ClientsideWindowHandlerFilter.java
URL: http://svn.apache.org/viewvc/myfaces/extensions/cdi/trunk/jee-modules/jsf20-module/impl/src/main/java/org/apache/myfaces/extensions/cdi/jsf2/impl/windowhandler/ClientsideWindowHandlerFilter.java?rev=1038363&view=auto
==============================================================================
--- myfaces/extensions/cdi/trunk/jee-modules/jsf20-module/impl/src/main/java/org/apache/myfaces/extensions/cdi/jsf2/impl/windowhandler/ClientsideWindowHandlerFilter.java (added)
+++ myfaces/extensions/cdi/trunk/jee-modules/jsf20-module/impl/src/main/java/org/apache/myfaces/extensions/cdi/jsf2/impl/windowhandler/ClientsideWindowHandlerFilter.java Tue Nov 23 22:30:41 2010
@@ -0,0 +1,128 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.myfaces.extensions.cdi.jsf2.impl.windowhandler;
+
+import org.apache.myfaces.extensions.cdi.core.api.util.ClassUtils;
+
+import javax.faces.application.ResourceHandler;
+import javax.servlet.Filter;
+import javax.servlet.FilterChain;
+import javax.servlet.FilterConfig;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.UUID;
+
+/**
+ * TODO
+ *
+ * @author Jakob Korherr
+ */
+public class ClientsideWindowHandlerFilter implements Filter
+{
+
+    public void init(FilterConfig filterConfig) throws ServletException
+    {
+    }
+
+    public void doFilter(ServletRequest servletRequest,
+                         ServletResponse servletResponse,
+                         FilterChain filterChain) throws IOException, ServletException
+    {
+        // request/response have to support http
+        HttpServletRequest httpRequest = (HttpServletRequest) servletRequest;
+        HttpServletResponse httpResponse = (HttpServletResponse) servletResponse;
+
+        if ("GET".equals(httpRequest.getMethod()) && !isResourceRequest(httpRequest))
+        {
+            // only for GET requests
+            String windowIdParam = servletRequest.getParameter("windowId");
+
+            if (windowIdParam == null)
+            {
+                // GET request without windowId - send windowhandler.html
+                sendWindowHandler(httpRequest, httpResponse);
+            }
+            else
+            {
+                // GET request with windowId (from AJAX)
+
+                // generate new windowId and set it as response header
+                String windowId; //X TODO get new windowId from CODI algorithm
+                //X TODO temp - random windowId
+                windowId = UUID.randomUUID().toString().replace("-", "");
+
+                // set response header for JavaScript
+                httpResponse.setHeader("myfaces-codi-windowId", windowId);
+
+                // pass through with WindowIdServletRequestWrapper
+                WindowIdServletRequestWrapper requestWrapper = new WindowIdServletRequestWrapper(httpRequest, windowId);
+                filterChain.doFilter(requestWrapper, servletResponse);
+            }
+        }
+        else
+        {
+            // POST or resource request - no handling necessary
+            filterChain.doFilter(servletRequest, servletResponse);
+        }
+    }
+
+    public void destroy()
+    {
+    }
+
+    private boolean isResourceRequest(HttpServletRequest httpRequest)
+    {
+        // TODO more detail: copy algorithm from ResourceHandlerImpl
+
+        String requestURL = httpRequest.getRequestURL().toString();
+
+        return requestURL.contains(ResourceHandler.RESOURCE_IDENTIFIER);
+    }
+
+    private void sendWindowHandler(HttpServletRequest req, HttpServletResponse resp)
+            throws ServletException, IOException
+    {
+        resp.setStatus(HttpServletResponse.SC_OK);
+        resp.setContentType("text/html");
+
+        InputStream is = ClassUtils.getClassLoader(null).getResourceAsStream("static/windowhandlerfilter.html");
+        OutputStream os = resp.getOutputStream();
+        try
+        {
+            byte[] buf = new byte[16 * 4096];
+            int bytesRead;
+            while ((bytesRead = is.read(buf)) != -1)
+            {
+                os.write(buf, 0, bytesRead);
+            }
+        }
+        finally
+        {
+            is.close();
+            os.close();
+        }
+    }
+
+}

Added: myfaces/extensions/cdi/trunk/jee-modules/jsf20-module/impl/src/main/java/org/apache/myfaces/extensions/cdi/jsf2/impl/windowhandler/WindowIdServletRequestWrapper.java
URL: http://svn.apache.org/viewvc/myfaces/extensions/cdi/trunk/jee-modules/jsf20-module/impl/src/main/java/org/apache/myfaces/extensions/cdi/jsf2/impl/windowhandler/WindowIdServletRequestWrapper.java?rev=1038363&view=auto
==============================================================================
--- myfaces/extensions/cdi/trunk/jee-modules/jsf20-module/impl/src/main/java/org/apache/myfaces/extensions/cdi/jsf2/impl/windowhandler/WindowIdServletRequestWrapper.java (added)
+++ myfaces/extensions/cdi/trunk/jee-modules/jsf20-module/impl/src/main/java/org/apache/myfaces/extensions/cdi/jsf2/impl/windowhandler/WindowIdServletRequestWrapper.java Tue Nov 23 22:30:41 2010
@@ -0,0 +1,85 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.myfaces.extensions.cdi.jsf2.impl.windowhandler;
+
+import org.apache.myfaces.extensions.cdi.core.impl.scope.conversation.spi.WindowContextManager;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletRequestWrapper;
+import java.util.Collections;
+import java.util.Enumeration;
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * @author Jakob Korherr
+ */
+public class WindowIdServletRequestWrapper extends HttpServletRequestWrapper
+{
+
+    private String windowId;
+    private Map parameterMap;
+
+    public WindowIdServletRequestWrapper(HttpServletRequest httpServletRequest, String windowId)
+    {
+        super(httpServletRequest);
+
+        this.windowId = windowId;
+
+        // create new parameter map including windowId
+        parameterMap = new HashMap();
+        parameterMap.putAll(httpServletRequest.getParameterMap());
+        parameterMap.put(WindowContextManager.WINDOW_CONTEXT_ID_PARAMETER_KEY, windowId);
+    }
+
+    @Override
+    public String getParameter(String name)
+    {
+        if (WindowContextManager.WINDOW_CONTEXT_ID_PARAMETER_KEY.equals(name))
+        {
+            return windowId;
+        }
+
+        return super.getParameter(name);
+    }
+
+    @Override
+    public String[] getParameterValues(String name)
+    {
+        if (WindowContextManager.WINDOW_CONTEXT_ID_PARAMETER_KEY.equals(name))
+        {
+            return new String[] { windowId };
+        }
+
+        return super.getParameterValues(name);
+    }
+
+    @Override
+    public Map getParameterMap()
+    {
+        return parameterMap;
+    }
+
+    @Override
+    public Enumeration getParameterNames()
+    {
+        return Collections.enumeration(parameterMap.entrySet());
+    }
+
+}