Package ejava.examples.ejbsessionbank.web

Class TellerHandlerServlet

java.lang.Object

javax.servlet.GenericServlet

javax.servlet.http.HttpServlet

ejava.examples.ejbsessionbank.web.TellerHandlerServlet

All Implemented Interfaces:

Serializable, Servlet, ServletConfig

public class TellerHandlerServlet
extends HttpServlet

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private class	TellerHandlerServlet.CloseAccount
private class	TellerHandlerServlet.CreateAccount
private class	TellerHandlerServlet.CreateAccounts
private class	TellerHandlerServlet.DepositAccount
private class	TellerHandlerServlet.GetAccount
private class	TellerHandlerServlet.GetAccounts
private class	TellerHandlerServlet.GetLedger
private class	TellerHandlerServlet.Handler
private class	TellerHandlerServlet.StealAccounts
private class	TellerHandlerServlet.WithdrawAccount

Field Summary

Fields

Modifier and Type	Field	Description
static String	ADMIN_TYPE
static String	CLOSE_ACCOUNT_COMMAND
static String	COMMAND_PARAM
static String	CREATE_ACCOUNT_COMMAND
static String	CREATE_ACCOUNTS_COMMAND
static String	DEPOSIT_COMMAND
private static String	ERROR_URL
static String	EXCEPTION_PARAM
static String	GET_ACCOUNT_COMMAND
static String	GET_ACCOUNTS_COMMAND
static String	GET_LEDGER_COMMAND
static String	HANDLER_TYPE_KEY
private Map<String,TellerHandlerServlet.Handler>	handlers
private Teller	injectedTeller	This will get automatically injected when running within the application server with the TellerEJB.
static String	jndiName
private static org.slf4j.Logger	logger
static String	STEAL_ALL_ACCOUNTS_COMMAND
private Teller	teller
private static String	UNKNOWN_COMMAND_URL
static String	WITHDRAW_COMMAND

Constructor Summary

Constructors

Constructor	Description
TellerHandlerServlet()

Method Summary

Modifier and Type	Method	Description
void	destroy()
protected void	doGet(HttpServletRequest request, HttpServletResponse response)	This is the main dispatch method for the servlet.
protected void	doPost(HttpServletRequest request, HttpServletResponse response)	Since this is a toy, we don't really care whether they call get or post.
protected Teller	getTeller()	This helper method will return a Teller in development based on a JNDI lookup.
void	init()	Init verify the teller reference to the EJB logic is in place and initializes the proper handler for the assigned role supplied in the servlet init parameters.

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doHead, doOptions, doPut, doTrace, getLastModified, service, service

Methods inherited from class javax.servlet.GenericServlet

getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, log, log

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

logger

private static final org.slf4j.Logger logger

COMMAND_PARAM

public static final String COMMAND_PARAM

See Also:

Constant Field Values

EXCEPTION_PARAM

public static final String EXCEPTION_PARAM

See Also:

Constant Field Values

HANDLER_TYPE_KEY

public static final String HANDLER_TYPE_KEY

See Also:

Constant Field Values

ADMIN_TYPE

public static final String ADMIN_TYPE

See Also:

Constant Field Values

CREATE_ACCOUNT_COMMAND

public static final String CREATE_ACCOUNT_COMMAND

See Also:

Constant Field Values

DEPOSIT_COMMAND

public static final String DEPOSIT_COMMAND

See Also:

Constant Field Values

WITHDRAW_COMMAND

public static final String WITHDRAW_COMMAND

See Also:

Constant Field Values

GET_ACCOUNT_COMMAND

public static final String GET_ACCOUNT_COMMAND

See Also:

Constant Field Values

CLOSE_ACCOUNT_COMMAND

public static final String CLOSE_ACCOUNT_COMMAND

See Also:

Constant Field Values

GET_ACCOUNTS_COMMAND

public static final String GET_ACCOUNTS_COMMAND

See Also:

Constant Field Values

CREATE_ACCOUNTS_COMMAND

public static final String CREATE_ACCOUNTS_COMMAND

See Also:

Constant Field Values

GET_LEDGER_COMMAND

public static final String GET_LEDGER_COMMAND

See Also:

Constant Field Values

STEAL_ALL_ACCOUNTS_COMMAND

public static final String STEAL_ALL_ACCOUNTS_COMMAND

See Also:

Constant Field Values

jndiName

public static final String jndiName

UNKNOWN_COMMAND_URL

private static final String UNKNOWN_COMMAND_URL

See Also:

Constant Field Values

ERROR_URL

private static final String ERROR_URL

See Also:

Constant Field Values

handlers

private Map<String,TellerHandlerServlet.Handler> handlers

injectedTeller

private Teller injectedTeller

This will get automatically injected when running within the application server with the TellerEJB. beanInterface is only needed to resolve the derived type ambiguity for Local and Remote caused by the design of our example.

teller

private Teller teller

Constructor Detail

TellerHandlerServlet

public TellerHandlerServlet()

Method Detail

init

public void init()
          throws ServletException

Init verify the teller reference to the EJB logic is in place and initializes the proper handler for the assigned role supplied in the servlet init parameters.

Overrides:

init in class GenericServlet

Throws:

ServletException

getTeller

protected Teller getTeller()
                    throws NamingException,
                           IOException

This helper method will return a Teller in development based on a JNDI lookup.

Returns:

teller if found

Throws:

NamingException

IOException

doGet

protected void doGet(HttpServletRequest request,
                     HttpServletResponse response)
              throws ServletException,
                     IOException

This is the main dispatch method for the servlet. It expects to find a command keyed by an argument in the request parameters.

Overrides:

doGet in class HttpServlet

Throws:

ServletException

IOException

doPost

protected void doPost(HttpServletRequest request,
                      HttpServletResponse response)
               throws ServletException,
                      IOException

Since this is a toy, we don't really care whether they call get or post.

Overrides:

doPost in class HttpServlet

Throws:

ServletException

IOException

destroy

public void destroy()

Specified by:

destroy in interface Servlet

Overrides:

destroy in class GenericServlet