zeta.handler.statistic
Class OperatingSystemsHandler

java.lang.Object
  |
  +--zeta.handler.statistic.AbstractHandler
        |
        +--zeta.handler.statistic.OperatingSystemsHandler

All Implemented Interfaces:

GetHandler

public class OperatingSystemsHandler

extends AbstractHandler

Handles a GET request for the statistic 'operating systems'.

Nested Class Summary

Nested classes inherited from class zeta.handler.statistic.AbstractHandler

AbstractHandler.InnerPageBuffer

Field Summary

private static int	imgHeightPie
private static int	imgWidthPie
private java.lang.String[]	names
private java.lang.Long[]	values

Fields inherited from class zeta.handler.statistic.AbstractHandler

imgHeight, imgWidth, servlet

Constructor Summary

OperatingSystemsHandler(ZetaServlet servlet)

Method Summary

java.awt.image.BufferedImage	createImage(java.sql.Connection con, java.lang.String imageName) Creates PNG image for a specified name which is defined in the HTML page.
java.lang.String	createPage(java.sql.Connection con) Creates HTML page with the content of the statistic 'operating systems'.
private void	extendPercent(Table table)
int	getImageHeight(java.lang.String imageName) Determines the height of the image in the statistic page.
int	getImageWidth(java.lang.String imageName) Determines the width of the image in the statistic page.
static void	main(java.lang.String[] args)
private void	updatePie(Table table)

Methods inherited from class zeta.handler.statistic.AbstractHandler

createPage, doGet, getBufferedPage, getInnerPageBuffer, getInnerPageExpiredDiffTime, getPageExpiredDiffTime, imageUpdateCompleted, isImageExpired, isInnerPageExpired, isPageExpired, pageUpdateCompleted

Methods inherited from class java.lang.Object

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

Field Detail

imgWidthPie

private static final int imgWidthPie

See Also:

Constant Field Values

imgHeightPie

private static final int imgHeightPie

See Also:

Constant Field Values

names

private java.lang.String[] names

values

private java.lang.Long[] values

Constructor Detail

OperatingSystemsHandler

public OperatingSystemsHandler(ZetaServlet servlet)

Parameters:

servlet - servlet which owns this handler.

Method Detail

getImageWidth

public int getImageWidth(java.lang.String imageName)

Determines the width of the image in the statistic page.

Overrides:

getImageWidth in class AbstractHandler

Parameters:

imageName - name of the image

Returns:

the width of the image in the statistic page.

getImageHeight

public int getImageHeight(java.lang.String imageName)

Determines the height of the image in the statistic page.

Overrides:

getImageHeight in class AbstractHandler

Parameters:

imageName - name of the image

Returns:

the height of the image in the statistic page.

createPage

public java.lang.String createPage(java.sql.Connection con)
                            throws java.sql.SQLException,
                                   javax.servlet.ServletException

Creates HTML page with the content of the statistic 'operating systems'.

Specified by:

createPage in class AbstractHandler

Parameters:

con - connection to the back-end database

Returns:

HTML page with the content of the statistic 'operating systems'.

java.sql.SQLException

javax.servlet.ServletException

createImage

public java.awt.image.BufferedImage createImage(java.sql.Connection con,
                                                java.lang.String imageName)
                                         throws java.sql.SQLException,
                                                javax.servlet.ServletException

Creates PNG image for a specified name which is defined in the HTML page.

Overrides:

createImage in class AbstractHandler

Parameters:

con - connection to the back-end database

imageName - name of the image

Returns:

PNG image for a specified name which is defined in the HTML page.

java.sql.SQLException

javax.servlet.ServletException

extendPercent

private void extendPercent(Table table)

updatePie

private void updatePie(Table table)

main

public static void main(java.lang.String[] args)