psdi.webclient.beans.common

Class ChartUtil

java.lang.Object

psdi.webclient.beans.common.ChartUtil

public class ChartUtil
extends java.lang.Object

This class contains utility methods for building graphs on the fly.

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	chartTypeBar
static java.lang.String	chartTypeDial
static java.lang.String	chartTypePie
static java.lang.String	chartTypeTrend

Constructor Summary

Constructors

Constructor and Description
ChartUtil()

Method Summary

Modifier and Type	Method and Description
java.util.Vector	computeTics(double minVal, double maxVal, int maxTicks, double step) This method takes axis range parameters and produces a list of string representations of rounded numbers within the given range.
java.awt.Color	decodeColor(java.lang.String hexValue) Decodes color based ona hex value
java.lang.String	formatNum(double number, int numfracdigits) Return a string for displaying the specified number using the specified number of digits after the decimal point.
java.lang.String	formatNumber(double dNumber, java.util.Locale userLocale) Format the number to make it upto 2 decimal places in fraction and remove trailing zeros
java.lang.String	getChartFont(WebClientSession sc) Returns the font to be used in the graph from the resource file
static ChartUtil	getChartUtil() Returns the static instance of this class.
java.lang.String	getDefaultColor() Get default color
java.util.Properties	getKPIChartColors(WebClientSession wcs) Returns a property set as a colors to be used in KPI dial and bar chart
java.lang.String[]	getKPITrendChartColors(WebClientSession wcs) Returns string array of colors to be used in KPI trend chart
java.lang.String[]	getResultSetChartColors(WebClientSession wcs) Returns string array of colors to be used in KPI trend chart
void	loadChartPropertiesDOM() Reads from chartpropreties configuration file and for every chart type loads color info.
double	log(double value, int base) Returns log for a given base
java.lang.String	makeColorTableString(java.lang.String[] colorTable) Makes color table string for CDL inside the class
int	numberOfDigits(double value, java.util.Locale userLocale) Returns number of integer digits in a number
int	numFracDigits(double number) Return the number of fractional digits required to display the given number.
double	roundDown(double val)
double	roundUp(double val) Given a number, round up to the nearest power of ten times 1, 2, or 5.
double	roundUpWithLog(double val) Given a number, round up to the nearest power of ten times 1, 2, or 5.
double	tic(double minVal, double maxVal, int maxTicks) Return the Tic step calculated dynamically

Methods inherited from class java.lang.Object

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

Field Detail

chartTypeTrend

public static final java.lang.String chartTypeTrend

See Also:

Constant Field Values

chartTypeDial

public static final java.lang.String chartTypeDial

See Also:

Constant Field Values

chartTypeBar

public static final java.lang.String chartTypeBar

See Also:

Constant Field Values

chartTypePie

public static final java.lang.String chartTypePie

See Also:

Constant Field Values

Constructor Detail

ChartUtil

public ChartUtil()

Method Detail

roundUp

public double roundUp(double val)

Given a number, round up to the nearest power of ten times 1, 2, or 5.

Parameters:

val - Value to be rounded

roundUpWithLog

public double roundUpWithLog(double val)

Given a number, round up to the nearest power of ten times 1, 2, or 5.

Parameters:

val - Value to be rounded

roundDown

public double roundDown(double val)

log

public double log(double value,
                  int base)

Returns log for a given base

Parameters:

double - - Value to get log of

int - - base of the log

Returns:

logvalue

formatNum

public java.lang.String formatNum(double number,
                                  int numfracdigits)

Return a string for displaying the specified number using the specified number of digits after the decimal point.

Parameters:

double - - Number to format

int - - Digits after decimal point

numFracDigits

public int numFracDigits(double number)

Return the number of fractional digits required to display the given number. If number goes larger than 15 is returned).

Parameters:

double - - Number to find the fractions in

Returns:

int - number of fractional digits

computeTics

public java.util.Vector computeTics(double minVal,
                                    double maxVal,
                                    int maxTicks,
                                    double step)

This method takes axis range parameters and produces a list of string representations of rounded numbers within the given range. these strings are intended for use as axis tic labels.

Parameters:

double - - no tics will be created for less than this value.

double - - maxVal no tics will be created for greater than this value.

int - - returned vector will contain no more labels than this number.

double - - step value between tics

Returns:

a Vector containing formatted label strings which should also

tic

public double tic(double minVal,
                  double maxVal,
                  int maxTicks)

Return the Tic step calculated dynamically

Parameters:

double - - no tics will be created for less than this value.

double - - no tics will be created for greater than this value.

int - - returned vector that will contain no more labels than this number.

Returns:

double - tic step

getChartFont

public java.lang.String getChartFont(WebClientSession sc)

Returns the font to be used in the graph from the resource file

Returns:

String - font name ot be used in chart

numberOfDigits

public int numberOfDigits(double value,
                          java.util.Locale userLocale)

Returns number of integer digits in a number

Parameters:

double - - number in which digits have to be counted

Returns:

int - the number of integer digits

getKPITrendChartColors

public java.lang.String[] getKPITrendChartColors(WebClientSession wcs)

Returns string array of colors to be used in KPI trend chart

Parameters:

wcs - Webclientsession

Returns:

String[] array of hex values as strings

getKPIChartColors

public java.util.Properties getKPIChartColors(WebClientSession wcs)

Returns a property set as a colors to be used in KPI dial and bar chart

Parameters:

wcs - Webclientsession

Returns:

Properties colors mapped to different types, warning, good, alert etc

getResultSetChartColors

public java.lang.String[] getResultSetChartColors(WebClientSession wcs)

Returns string array of colors to be used in KPI trend chart

Parameters:

wcs - Webclientsession

Returns:

String[] array of hex values as strings

getChartUtil

public static ChartUtil getChartUtil()

Returns the static instance of this class. No need to create new instances.

Returns:

ChartUtil

loadChartPropertiesDOM

public void loadChartPropertiesDOM()

Reads from chartpropreties configuration file and for every chart type loads color info. This may be improved in future to use more properties

decodeColor

public java.awt.Color decodeColor(java.lang.String hexValue)

Decodes color based ona hex value

Parameters:

hexValue - String

Returns:

bColor as Color

makeColorTableString

public java.lang.String makeColorTableString(java.lang.String[] colorTable)

Makes color table string for CDL inside the class

Parameters:

colorTable - as String[]

getDefaultColor

public java.lang.String getDefaultColor()

Get default color

formatNumber

public java.lang.String formatNumber(double dNumber,
                                     java.util.Locale userLocale)

Format the number to make it upto 2 decimal places in fraction and remove trailing zeros

Parameters:

dNumber - double to perform function on

Returns:

sNumber string representation of dNumber