org.ow2.jonas.webapp.jonasadmin.monitoring.graph.utils
Class GraphUtils

java.lang.Object
  org.ow2.jonas.webapp.jonasadmin.monitoring.graph.utils.GraphUtils

public class GraphUtils
extends Object

Field Summary

static Color	AXIS_COLOR
static Color	BG_COLOR
static int	BOTTOM_MARGIN
static int	DEF_NUM_MESURE
static int	DEF_RANGE
static int	DEF_SIZE_TABLE_MEASURES
static int	DEF_SPACE_BETWEEN_LINES
static Color	FG_COLOR
static Color	GAUGE_FG_COLOR
static int	GAUGE_TEXT_MAX_LENGTH
static int	GAUGE_WIDTH
static int	GRAPHIC_SEPARATOR
static Color	GRAPHICS_BG_COLOR
static Color	GRAPHICS_FG_COLOR
static int	HEIGHT
static Color	HORIZONTAL_LINE_COLOR
static int	HORIZONTAL_SPACE
static int	LEFT_MARGIN
static int	RIGHT_MARGIN
static Color	TEXT_COLOR
static int	TOP_MARGIN
static int	Y_LENGTH

Constructor Summary

GraphUtils()

Method Summary

static int	cartesianXToGraphicsX(int x)
static int	cartesianYToGraphicsY(int y, int factor)
static void	drawCurrentUsedPerTotal(Graphics g, Long currentUsed, Long total, int xLength, String usedLabel, String unit, boolean compareWithTotal, int graphRank) Draw a box on right of monitoring graph to show current used value compared to total value
static void	drawGraph(Graphics g, long k, int xLength, int width, int pow, int n, int index, Long[] data, Long maxExpectedValue, String graphTitle, String meausreUnit, int graphRank) Draw main monitoring Graph
static int	getHeight()
static int	getWidth(int length)

Methods inherited from class java.lang.Object

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

Field Detail

DEF_SIZE_TABLE_MEASURES

public static final int DEF_SIZE_TABLE_MEASURES

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Constant Field Values

DEF_RANGE

public static final int DEF_RANGE

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Constant Field Values

DEF_NUM_MESURE

public static final int DEF_NUM_MESURE

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Constant Field Values

HEIGHT

public static final int HEIGHT

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Constant Field Values

TOP_MARGIN

public static final int TOP_MARGIN

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Constant Field Values

RIGHT_MARGIN

public static final int RIGHT_MARGIN

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Constant Field Values

BOTTOM_MARGIN

public static final int BOTTOM_MARGIN

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Constant Field Values

LEFT_MARGIN

public static final int LEFT_MARGIN

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Constant Field Values

HORIZONTAL_SPACE

public static final int HORIZONTAL_SPACE

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Constant Field Values

Y_LENGTH

public static final int Y_LENGTH

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Constant Field Values

GAUGE_WIDTH

public static final int GAUGE_WIDTH

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Constant Field Values

BG_COLOR

public static final Color BG_COLOR

FG_COLOR

public static final Color FG_COLOR

GRAPHICS_BG_COLOR

public static final Color GRAPHICS_BG_COLOR

GAUGE_FG_COLOR

public static final Color GAUGE_FG_COLOR

GRAPHICS_FG_COLOR

public static final Color GRAPHICS_FG_COLOR

AXIS_COLOR

public static final Color AXIS_COLOR

TEXT_COLOR

public static final Color TEXT_COLOR

HORIZONTAL_LINE_COLOR

public static final Color HORIZONTAL_LINE_COLOR

DEF_SPACE_BETWEEN_LINES

public static final int DEF_SPACE_BETWEEN_LINES

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Constant Field Values

GAUGE_TEXT_MAX_LENGTH

public static final int GAUGE_TEXT_MAX_LENGTH

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Constant Field Values

GRAPHIC_SEPARATOR

public static final int GRAPHIC_SEPARATOR

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Constant Field Values

Constructor Detail

GraphUtils

public GraphUtils()

Method Detail

getWidth

public static int getWidth(int length)

Parameters:

length - the data array size (data.length)

Returns:

the picture width when displaying an array of the specified size

getHeight

public static int getHeight()

Returns:

the picture height

cartesianXToGraphicsX

public static int cartesianXToGraphicsX(int x)

cartesianYToGraphicsY

public static int cartesianYToGraphicsY(int y,
                                        int factor)

Parameters:

y - the value to convert into cartesian

factor - represents the graph rank on the image stream

Returns:

cartesian value of first parameter.

drawGraph

public static void drawGraph(Graphics g,
                             long k,
                             int xLength,
                             int width,
                             int pow,
                             int n,
                             int index,
                             Long[] data,
                             Long maxExpectedValue,
                             String graphTitle,
                             String meausreUnit,
                             int graphRank)

Draw main monitoring Graph

Parameters:

g - the graphic (contained in the servlet image)

k - used when

xLength - 2*monitored data number

width - Graph width, depends on xLength

pow - = 10^n

n -

data - datas to draw

maxExpectedValue - over this value, current measured value is considered critical

drawCurrentUsedPerTotal

public static void drawCurrentUsedPerTotal(Graphics g,
                                           Long currentUsed,
                                           Long total,
                                           int xLength,
                                           String usedLabel,
                                           String unit,
                                           boolean compareWithTotal,
                                           int graphRank)

Draw a box on right of monitoring graph to show current used value compared to total value

Parameters:

g - The main graphic. The drawn box will be added in this graphic

currentUsed - current used value of a given measure

total - total used value of a measure

xLength - width of the box

usedLabel - label to display for currentUsed value

unit - measure unit (e.g MB for memory measure)

compareWithTotal - if true then the graph will display comparison betxeen current and total value