content: /**
   * 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.aries.samples.blog.web;
  
  import java.io.IOException;
  import javax.servlet.ServletException;
  import javax.servlet.http.HttpServlet;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  import org.apache.aries.samples.blog.api.BloggingService;
  import org.apache.aries.samples.blog.web.util.FormServlet;
  import org.apache.aries.samples.blog.web.util.JNDIHelper;
  
  public class CreateBlogEntry extends HttpServlet
  {
    private static final long serialVersionUID = -6484228320837122235L;
  
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException,
        IOException{
          doPost(req,resp);
    }
    
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException,
        IOException
    {
      // new blog entry values
      String email = req.getParameter("email");
      String title = req.getParameter("title");
      String text = req.getParameter("text");
      String tags = req.getParameter("tags");
      
      BloggingService service = JNDIHelper.getBloggingService();
      
      if (service.getBlogAuthor(email) != null) {
        service.createBlogEntry(email, title, text, tags);
        resp.sendRedirect("ViewBlog");
      } else {
        storeParam(req, "email", email);
        storeParam(req, "title", title);
        storeParam(req, "text", text);
        storeParam(req, "tags", tags);
        
        if (email.equals(""))
          FormServlet.addError(req, "The email field is required.");
        else
          FormServlet.addError(req, "The author's email is not valid.");
        
        resp.sendRedirect("CreateBlogEntryForm");
      }
    }
    
    private void storeParam(HttpServletRequest req, String param, String value) 
    {
      FormServlet.storeParam(req, CreateBlogEntryForm.ID, param, value);
    }
  }