com.xenonsoft.bridgetown.test.servlets
Class CalcServlet

java.lang.Object
  javax.servlet.GenericServlet
      javax.servlet.http.HttpServlet
          com.xenonsoft.bridgetown.test.servlets.CalcServlet

All Implemented Interfaces:

java.io.Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

public class CalcServlet

extends javax.servlet.http.HttpServlet

Calculation Service servlet

Version:

$Id: CalcServlet.java,v 1.1.1.1 2004/09/04 12:04:31 peter_pilgrim Exp $

Author:

Peter Pilgrim, 24-Aug-2004

See Also:

Serialized Form

Field Summary

static java.lang.String	FIRST_NUMBER_ATTR First number JSP scope attribute name
static java.lang.String	INPUT_VIEW The input view (hard coded for this demonstration, use a web MVC framework like Jakarta Struts)
static java.lang.String	OPERATOR_ATTR Operator JSP scope attribute name
static java.lang.String	OUTPUT_VIEW The output view (hard coded for this demonstration, use a web MVC framework like Jakarta Struts)
static java.lang.String	RESULT_ATTR Result request JSP scope attribute name
static java.lang.String	SECOND_NUMBER_ATTR Second number JSP scope attribute name
static java.math.BigDecimal	ZERO Short cut for a global BigDecimal 0.0 object

Constructor Summary

CalcServlet()
Default constructor

Method Summary

void	doGet(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) Implements / overrides doGet, executes the user's calculation using the calculation service bean.
void	doPost(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) Implements / overrides doPost, simply calls the method doGet() and returns.
void	init() Initialises the servlets Implements / overrides init

Methods inherited from class javax.servlet.http.HttpServlet

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

Methods inherited from class javax.servlet.GenericServlet

destroy, 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

INPUT_VIEW

public static final java.lang.String INPUT_VIEW

The input view (hard coded for this demonstration, use a web MVC framework like Jakarta Struts)

See Also:

Constant Field Values

OUTPUT_VIEW

public static final java.lang.String OUTPUT_VIEW

The output view (hard coded for this demonstration, use a web MVC framework like Jakarta Struts)

See Also:

Constant Field Values

FIRST_NUMBER_ATTR

public static final java.lang.String FIRST_NUMBER_ATTR

First number JSP scope attribute name

See Also:

Constant Field Values

SECOND_NUMBER_ATTR

public static final java.lang.String SECOND_NUMBER_ATTR

Second number JSP scope attribute name

See Also:

Constant Field Values

OPERATOR_ATTR

public static final java.lang.String OPERATOR_ATTR

Operator JSP scope attribute name

See Also:

Constant Field Values

RESULT_ATTR

public static final java.lang.String RESULT_ATTR

Result request JSP scope attribute name

See Also:

Constant Field Values

ZERO

public static final java.math.BigDecimal ZERO

Short cut for a global BigDecimal 0.0 object

Constructor Detail

CalcServlet

public CalcServlet()

Default constructor

Method Detail

init

public void init()

Initialises the servlets Implements / overrides init

See Also:

GenericServlet.init()

doGet

public void doGet(javax.servlet.http.HttpServletRequest request,
                  javax.servlet.http.HttpServletResponse response)
           throws java.io.IOException,
                  javax.servlet.ServletException

Implements / overrides doGet, executes the user's calculation using the calculation service bean. This method retrieves the web application assembler from the servlet context. It, then, retrieves the ICalcService service bean in order to run the user's requested calculation. By the time the service bean is asked for the dependency have already been injected by the IoC framework.

Parameters:

request -

response -

Throws:

java.io.IOException

javax.servlet.ServletException

See Also:

HttpServlet.doGet(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)

doPost

public void doPost(javax.servlet.http.HttpServletRequest request,
                   javax.servlet.http.HttpServletResponse response)
            throws java.io.IOException,
                   javax.servlet.ServletException

Implements / overrides doPost, simply calls the method doGet() and returns.

Parameters:

request -

response -

Throws:

java.io.IOException

javax.servlet.ServletException

See Also:

HttpServlet.doPost(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse), doGet(HttpServletRequest, HttpServletResponse)