Re: protobuf.GeneratedMessage is a restricted class

What version of the SDK? Was this in the devapp server or production appengine server? If the latter, what is your app name, version, and an URL that reproduces this?

Thanks,

Rob

On Mon, Apr 9, 2012 at 11:20 AM, NASIR <nasir031@gmail.com> wrote:

I'm developing db driven web using cloud sql but when I open the link
in browser I got this error..

HTTP ERROR 500
Problem accessing /sql_engine_web. Reason:


com.google.appengine.repackaged.com.google.protobuf.GeneratedMessage
is a restricted class. Please see the Google  App Engine developer's
guide for more details.
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
I'm following the guestbook guide for making connection to google
cloud sql.

Here is how I'm doing.
===================
CONNECTION MANAGER
===================

package engine.connector;

import java.sql.DriverManager;

import com.google.appengine.api.rdbms.AppEngineDriver;
import com.google.cloud.sql.jdbc.Connection;

public class Cloud_SQL_Connector {

       private Connection googleCon = null;
       private String URL = "jdbc:google:rdbms://uni-cloud:unicloud/";

       @SuppressWarnings("unused")
       private String instanceName = "uni_cloud_db";

       /**
        * @author nasir
        * @param instanceName that's the name of your database
        */
       public Cloud_SQL_Connector(String instanceName) {
               this.instanceName = instanceName;
               URL += instanceName;
       }

       /**
        * @author nasir
        * @return the googleCon type of google cloud sql
        * @param nothing
        */
       public Connection getConnection() {
               try {
                       DriverManager.registerDriver(new AppEngineDriver());
                       this.googleCon = (Connection) DriverManager.getConnection(URL);
               } catch (Exception e) {
                       e.printStackTrace();
               }
               finally{
                       if(googleCon != null){
                               try {
                                       googleCon.close();
                               } catch (Exception e2) {
                                       e2.printStackTrace();
                               }
                       }
               }
               return googleCon;
       }
}
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
============
MAIN SERVLET
============
private Connection con  = null;

       public void doGet(HttpServletRequest req, HttpServletResponse resp)
       throws IOException {
               PrintWriter out = resp.getWriter();
               out.println("text/html");
               Cloud_SQL_Connector connectionManager = new
Cloud_SQL_Connector("uni_cloud_db");
               con = connectionManager.getConnection();

               String statement = "insert into user (username, type)values (?, ?)";
               try {
                       PreparedStatement stmt = con.prepareStatement(statement);
                       stmt.setString(1, "042-bscs-08");
                       stmt.setString(2, "student");
                       stmt.execute();
               } catch (SQLException e) {
                       // TODO Auto-generated catch block
                       e.printStackTrace();
               }finally{
                       if(con != null){
                               try {
                                       con.close();
                               } catch (SQLException e2) {
                                       // TODO Auto-generated catch block
                                       e2.printStackTrace();
                               }
                       }
               }

       }
___________________________________________________________________________________________________________
Please help me in getting it fixed