/**
 *  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.*;
import java.math.BigDecimal;
import javax.servlet.*;
import javax.servlet.http.*;

import org.apache.aries.samples.ariestrader.api.TradeServiceUtilities;
import org.apache.aries.samples.ariestrader.api.TradeServices;
import org.apache.aries.samples.ariestrader.api.persistence.*;
import org.apache.aries.samples.ariestrader.util.*;

/**
 * 
 * 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);
}}