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package examples.stateless.container;
import javax.ejb.EJB;
import javax.naming.InitialContext;
import javax.naming.NameClassPair;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
import javax.servlet.http.HttpServlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import examples.stateless.interfaces.PricerInjection;
import examples.stateless.interfaces.PricerLookup;
/**
* Servlet Class
*
* @web.servlet name="PricerClient" display-name="Name for PricerClient"
* description="Description for PricerClient"
* @web.servlet-mapping url-pattern="/PricerClient"
* @web.servlet-init-param name="A parameter" value="A value"
*/
public class PricerClientServlet extends HttpServlet {
@EJB PricerInjection pi2;
@EJB PricerLookup pl2;
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
doPost(req, resp);
}
protected void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
double price = 85.0;
String state = "ny";
PrintWriter pw = resp.getWriter();
resp.setContentType("text/html");
pw.println("<HTML>\n\t<BODY>");
try {
InitialContext ic = new InitialContext();
pw.println("<h3>Here are the JNDI names bound for beans in this example:</h3>");
pw.println("<ol>");
NamingEnumeration ne = ic.list("");
while (ne.hasMore()) {
NameClassPair ncp = (NameClassPair) ne.next();
pw.println("<li>" + ncp.getName());
}
pw.println("</ol>");
// Pricer pricer = (Pricer)ic.lookup(Pricer.class.getName());
PricerInjection pi = (PricerInjection)ic.lookup("#"+PricerInjection.class.getName());
PricerLookup pl = (PricerLookup)ic.lookup("#"+PricerLookup.class.getName());
pw.println("Tax (using lookup) on: " + price + " for State: "
+ state + " is: " + pl.getTaxLookup(price, state) + "<br>");
pw.println("Tax (using injection) on: " + price + " for State: "
+ state + " is: " + pi.getTaxInjection(price, state)
+ "<br>");
pw.println("Tax (using lookup from @EJB) on: " + price + " for State: "
+ state + " is: " + pl2.getTaxLookup(price, state) + "<br>");
pw.println("Tax (using injection @EJB) on: " + price + " for State: "
+ state + " is: " + pi2.getTaxInjection(price, state)
+ "<br>");
}
catch (NamingException e) {
e.printStackTrace();
}
pw.println("\t</BODY>\n</HTML>");
}
}
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