com.eteks.servlet
Class TeksSurveyPie

java.lang.Object
  javax.servlet.GenericServlet
      javax.servlet.http.HttpServlet
          com.eteks.awt.servlet.PJAServlet
              com.eteks.servlet.TeksSurveyPie

All Implemented Interfaces:

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

public class TeksSurveyPie

extends PJAServlet

This servlet manages in a simple way a dynamic survey and returns the pie of the survey. It can be called in either ways :

• .../servlet/com.eteks.servlet.TeksSurveyPie?survey=mySurvey&answer=myAnswer adds the answer myAnswer to the survey mySurvey, and then returns the pie of the current state of mySurvey.
• .../servlet/com.eteks.servlet.TeksSurveyPie?survey=mySurvey simply returns the pie of the current state of mySurvey.

To be platform independant, the servlet uses com.eteks.awt.servlet.PJAServlet as super class, to have at disposal an image into which graphics operation can be performed.
com.eteks.awt.PJAServlet class and depending classes of com.eteks.awt packages must be in the servlet engine classpath, and at least one .pjaf font file (Pure Java AWT Font) must exist in the user directory or in the directory set in the java.awt.fonts system property, if JVM version <= 1.1.

Since:

PJA1.0

Version:

2.1

Author:

Emmanuel Puybaret

See Also:

PJAServlet, Serialized Form

Constructor Summary

TeksSurveyPie()

Method Summary

void	destroyPJA() Override this method instead of the final method destroy ().
void	doGetPJA(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) Override this method instead of the final method doGet ().
void	doPostPJA(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) Override this method instead of the final method doPost ().
java.lang.String	getFontsPath() Override this method to return the fonts path where .pjaf files (JDK 1.1) or True Type files (JDK >= 1.2) can be found.
void	initPJA(javax.servlet.ServletConfig config) Override this method instead of the final method init (ServletConfig config).
void	sendGIFImage(java.awt.Image image, javax.servlet.http.HttpServletResponse response) Generates a GIF image on the response stream from image.

Methods inherited from class com.eteks.awt.servlet.PJAServlet

createImage, destroy, doDelete, doDeletePJA, doGet, doOptions, doOptionsPJA, doPost, doPut, doPutPJA, doTrace, doTracePJA, getServletInfo, getServletInfoPJA, getSystemProperty, getUserHomeDir, init, init, initPJA, isDefaultToolkitAvailable, service, service, servicePJA, servicePJA, testDefaultToolkit

Methods inherited from class javax.servlet.http.HttpServlet

getLastModified

Methods inherited from class javax.servlet.GenericServlet

getInitParameter, getInitParameterNames, getServletConfig, getServletContext, log, log

Methods inherited from class java.lang.Object

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

Constructor Detail

TeksSurveyPie

public TeksSurveyPie()

Method Detail

initPJA

public void initPJA(javax.servlet.ServletConfig config)
             throws javax.servlet.ServletException

Description copied from class: PJAServlet

Override this method instead of the final method init (ServletConfig config). PJAServlet implementation calls super.init (config).

Overrides:

initPJA in class PJAServlet

Throws:

javax.servlet.ServletException

destroyPJA

public void destroyPJA()

Description copied from class: PJAServlet

Override this method instead of the final method destroy (). PJAServlet implementation calls super.destroy ().

Overrides:

destroyPJA in class PJAServlet

getFontsPath

public java.lang.String getFontsPath()

Description copied from class: PJAServlet

Override this method to return the fonts path where .pjaf files (JDK 1.1) or True Type files (JDK >= 1.2) can be found. If you want to return more than one directory separate them with File.pathSeparator.
Note : This method is called from within PJAServlet constructor.

Overrides:

getFontsPath in class PJAServlet

Returns:

PJAServlet implementation returns "." + File.pathSeparator + getSystemProperty ("user.dir") + File.pathSeparator + getSystemProperty ("java.home")

doPostPJA

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

Description copied from class: PJAServlet

Override this method instead of the final method doPost (). PJAServlet implementation calls super.doPost ().

Overrides:

doPostPJA in class PJAServlet

Throws:

javax.servlet.ServletException

java.io.IOException

doGetPJA

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

Description copied from class: PJAServlet

Override this method instead of the final method doGet (). PJAServlet implementation calls super.doGet ().

Overrides:

doGetPJA in class PJAServlet

Throws:

javax.servlet.ServletException

java.io.IOException

sendGIFImage

public void sendGIFImage(java.awt.Image image,
                         javax.servlet.http.HttpServletResponse response)
                  throws javax.servlet.ServletException,
                         java.io.IOException

Generates a GIF image on the response stream from image.

Throws:

javax.servlet.ServletException

java.io.IOException