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.ariestrader.web.prims;
  
  import java.io.IOException;
  import java.math.BigDecimal;
  import javax.servlet.ServletConfig;
  import javax.servlet.ServletException;
  import javax.servlet.http.HttpServlet;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  import org.apache.aries.samples.ariestrader.api.TradeServiceUtilities;
  import org.apache.aries.samples.ariestrader.api.TradeServices;
  import org.apache.aries.samples.ariestrader.api.persistence.QuoteDataBean;
  import org.apache.aries.samples.ariestrader.util.Log;
  import org.apache.aries.samples.ariestrader.util.TradeConfig;
  
  /**
   * 
   * PingJDBCReadPrepStmt uses a prepared statement
   * for database update. Statement parameters are set dynamically on each request.
   * This primative uses {@link org.apache.aries.samples.ariestrader.direct.TradeJEEDirect} to set the price of a random stock
   * (generated by {@link org.apache.aries.samples.ariestrader.Trade_Config}) through the use of prepared statements.
   * 
   */
  
  public class PingJDBCWrite extends HttpServlet {
  
  	private static String initTime;
  	private static int hitCount;
    
  
  /**
  * this is the main method of the servlet that will service all get requests.
  * @param request HttpServletRequest
  * @param responce HttpServletResponce
  **/
  public void doGet(HttpServletRequest req, HttpServletResponse res)
  	throws ServletException, IOException {
  
  	String symbol = null;
  	BigDecimal newPrice;
  	StringBuffer output = new StringBuffer(100);
  	res.setContentType("text/html");
  	java.io.PrintWriter out = res.getWriter();
  
  	try
  	{
  		//get a random symbol to update and a random price.
  		symbol = TradeConfig.rndSymbol();
  		newPrice = TradeConfig.getRandomPriceChangeFactor();
  
  		//TradeJdbc via TradeServices makes use of prepared statements so I am going to reuse the existing code.
                  TradeServices tradeServices = TradeServiceUtilities.getTradeServices("(mode=JDBC)");
  
  		//update the price of our symbol
  		QuoteDataBean quoteData = null;
  		int iter = TradeConfig.getPrimIterations();
  		for (int ii = 0; ii < iter; ii++) {
  			quoteData = tradeServices.updateQuotePriceVolume(symbol, newPrice, 100.0);
  		}
  
  		//write the output
  		output.append(
  			"<html><head><title>Ping JDBC Write w/ Prepared Stmt.</title></head>"
  				+ "<body><HR><FONT size=\"+2\" color=\"#000066\">Ping JDBC Write w/ Prep Stmt:</FONT><FONT size=\"-1\" color=\"#000066\"><HR>Init time : "
  				+ initTime);
                  hitCount++;
  		output.append("<BR>Hit Count: " + hitCount);
  		output.append("<HR>Update Information<BR>");
  		output.append("<BR>" + quoteData.toHTML() + "<HR></FONT></BODY></HTML>");
  		out.println(output.toString());
  
  	}
  	catch (Exception e)
  	{
  		Log.error(e, "PingJDBCWrite -- error updating quote for symbol", symbol);
  		res.sendError(500, "PingJDBCWrite Exception caught: " + e.toString());
  	}
  }                                 
  /** 
   * returns a string of information about the servlet
   * @return info String: contains info about the servlet
   **/
  public String getServletInfo()
  {
  	return "Basic JDBC Write using a prepared statment makes use of TradeJdbc code.";
  }            
  /**
  * called when the class is loaded to initialize the servlet
  * @param config ServletConfig:
  **/
  public void init(ServletConfig config) throws ServletException {
  	super.init(config);
  	initTime = new java.util.Date().toString();
  	hitCount = 0;
  
  }      
  /**
   * forwards post requests to the doGet method
   * Creation date: (11/6/2000 10:52:39 AM)
   * @param res javax.servlet.http.HttpServletRequest
   * @param res2 javax.servlet.http.HttpServletResponse
   */
  public void doPost(HttpServletRequest req, HttpServletResponse res)
  	throws ServletException, IOException {
  	doGet(req, res);
  }}
  