1 files changed, 160 insertions, 0 deletions
diff --git a/das-java/tags/1.0-incubating-beta1-rc2/samples/sample-ajax-das/src/main/java/org/apache/tuscany/samples/web/CommandServlet.java b/das-java/tags/1.0-incubating-beta1-rc2/samples/sample-ajax-das/src/main/java/org/apache/tuscany/samples/web/CommandServlet.java
new file mode 100644
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+++ b/das-java/tags/1.0-incubating-beta1-rc2/samples/sample-ajax-das/src/main/java/org/apache/tuscany/samples/web/CommandServlet.java
@@ -0,0 +1,160 @@
+/*
+ * 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.tuscany.samples.web;
+
+import java.io.IOException;
+
+import javax.servlet.http.HttpServlet;
+import javax.servlet.RequestDispatcher;
+import javax.servlet.ServletConfig;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.apache.tuscany.das.rdb.dbconfig.DBInitializer;
+/**
+ * This is generic servlet where based on serviceName, it will call the speciliazed processor to
+ * process request and obtain response. This servlet can be used in any web sample, just needs to 
+ * pass appropriate serviceProcessorClassName and rest is generic 
+ *
+ */
+public class CommandServlet extends HttpServlet {
+    final static long serialVersionUID = 1221332432;
+	/*
+     * (non-Java-doc)
+     * 
+     * @see javax.servlet.http.HttpServlet#HttpServlet()
+     */
+    public CommandServlet() {
+        super();
+    }
+    
+    public static void refreshDB() throws ServletException {
+    	try{
+    		DBInitializer dbInitializer = new DBInitializer("AjaxDBConfig.xml");
+	    	dbInitializer.refreshDatabaseData();
+		}catch(Exception e){
+			e.printStackTrace();
+			ServletException se = new ServletException(e.getMessage());
+			throw se;
+		}
+    }
+
+    public void init(ServletConfig config) throws ServletException { 
+    	refreshDB();
+    }
+    
+    /*
+     * (non-Java-doc)
+     * 
+     * @see javax.servlet.http.HttpServlet#doGet(HttpServletRequest arg0,
+     *      HttpServletResponse arg1)
+     */
+    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        doTask(request, response);
+    }
+
+    /*
+     * (non-Java-doc)
+     * 
+     * @see javax.servlet.http.HttpServlet#doPost(HttpServletRequest arg0,
+     *      HttpServletResponse arg1)
+     */
+    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        doTask(request, response);
+    }
+
+    /**Invoke passed service and return result
+     * 
+     * @param req
+     * @param resp
+     * @throws ServletException
+     * @throws IOException
+     */
+	public void doTask(HttpServletRequest req, HttpServletResponse resp)
+		throws ServletException, IOException {
+		String textContentType= "text/text";
+		String xmlContentType= "text/xml";
+		
+		String refreshRequest = req.getParameter("refreshDB"); 
+		if(refreshRequest != null && refreshRequest.equals("yes")){
+			{
+				try{
+					refreshDB();
+				}catch(ServletException e){
+					throw e;
+				}
+			}
+			this.writeResponse(resp, "Refreshed database!", textContentType);			
+		}
+		else{
+			String serviceName = req.getParameter("serviceName");//e.g. DASQueryProcessor
+			String qry = req.getParameter("Query");//e.g. query:xxx, command:yyy
+			String configFile = req.getParameter("configFile");//name of DAS config file
+			
+			try{
+				ServiceProcessor serviceClassInst = null;
+				//so any subclass of abstract ServiceProcessor can be used
+				Object obj = Class.forName(serviceName).newInstance();
+				
+				if(obj instanceof ServiceProcessor){
+					serviceClassInst = (ServiceProcessor)obj;
+				}
+				
+				String result = serviceClassInst.execute(qry, configFile);
+				this.writeResponse(resp, result, xmlContentType);
+			}catch(Exception e){
+				this.writeResponse(resp, e.getMessage(), textContentType);
+				e.printStackTrace();
+			}			
+		}
+	}
+
+	/**Write response in required content type to servlet response
+	 * 
+	 * @param resp
+	 * @param output
+	 * @param contentType
+	 * @throws IOException
+	 */
+	public void writeResponse(HttpServletResponse resp, String output, String contentType) throws IOException {
+		resp.setContentType(contentType);//"text/text", "text/xml"
+		resp.setHeader("Cache-Control", "no-cache");
+		resp.getWriter().write(output);		
+	}
+	
+    // Utility methods
+
+    public void gotoURL(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, String url) throws ServletException, IOException {
+        url = response.encodeURL(url);
+        RequestDispatcher dispatcher = getServletContext().getRequestDispatcher(url);
+        dispatcher.forward(request, response);
+    }
+
+    public void redirectURL(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, String url) throws ServletException, IOException {
+        url = response.encodeURL(request.getContextPath() + url);
+        response.sendRedirect(url);
+    }
+
+    public void forwardURL(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, String url) throws ServletException, IOException {
+        url = response.encodeURL(url);
+        RequestDispatcher dispatch = getServletContext().getRequestDispatcher(url);
+        dispatch.forward(request, response);
+    }    
+}