org.rhq.enterprise.gui.common.servlet

Class PerformanceChartServlet

java.lang.Object

javax.servlet.GenericServlet

javax.servlet.http.HttpServlet

org.rhq.enterprise.gui.common.servlet.ParameterizedServlet

org.rhq.enterprise.gui.common.servlet.ImageServlet

org.rhq.enterprise.gui.common.servlet.ChartServlet

org.rhq.enterprise.gui.common.servlet.PerformanceChartServlet

All Implemented Interfaces:

Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

public class PerformanceChartServlet
extends ChartServlet

Performance chart servlet.

Additional parameters are as follows (any required parameters are in italics):

key	value
perfChartType	{ 'url' | 'urldetail' | 'type' }

Author:

Ian Springer

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static String	CHART_TYPE_TYPE Request parameter value representing an type perf chart.
static String	CHART_TYPE_URL Request parameter value representing a url perfchart.
static String	CHART_TYPE_URLDETAIL Request parameter value representing a urldetail perf chart.
static String	PERF_CHART_TYPE_PARAM Request parameter for performance chart type.

Fields inherited from class org.rhq.enterprise.gui.common.servlet.ChartServlet

BASELINE_PARAM, HIGHRANGE_PARAM, IMAGE_HEIGHT_DEFAULT, IMAGE_WIDTH_DEFAULT, LOWRANGE_PARAM, MEASUREMENT_UNITS_PARAM, SHOW_AVERAGE_PARAM, SHOW_BASELINE_PARAM, SHOW_HIGHRANGE_PARAM, SHOW_LOW_PARAM, SHOW_LOWRANGE_PARAM, SHOW_PEAK_PARAM, SHOW_VALUES_PARAM, units

Fields inherited from class org.rhq.enterprise.gui.common.servlet.ImageServlet

IMAGE_FORMAT_JPEG, IMAGE_FORMAT_PARAM, IMAGE_FORMAT_PNG, IMAGE_HEIGHT_PARAM, IMAGE_WIDTH_PARAM

Constructor Summary

Constructors

Constructor and Description
PerformanceChartServlet()

Method Summary

Methods

Modifier and Type	Method and Description
protected Chart	createChart() Create and return the chart.
protected int	getDefaultImageHeight() Return the default imageHeight.
protected int	getDefaultImageWidth() Return the default imageWidth.
int	getNumCharts()
String	getPerfChartType()
boolean	isTypeChart()
boolean	isUrlChart()
boolean	isUrlDetailChart()
protected void	parseParameters(javax.servlet.http.HttpServletRequest request) This method will be called automatically by the ChartServlet.
protected void	plotData(javax.servlet.http.HttpServletRequest request, Chart chart) This method will be called automatically by the ChartServlet.
void	setNumCharts(int size)
void	setPerfChartType(String type)

Methods inherited from class org.rhq.enterprise.gui.common.servlet.ChartServlet

createImage, getDefaultShowAverage, getDefaultShowBaseline, getDefaultShowHighRange, getDefaultShowLow, getDefaultShowLowRange, getDefaultShowPeak, getDefaultShowValues, getShowAvg, getShowLow, getShowPeak, initializeChart, renderJpegImage, renderPngImage

Methods inherited from class org.rhq.enterprise.gui.common.servlet.ImageServlet

doGet, getDefaultImageFormat, getImageFormat, getImageHeight, getImageWidth, init

Methods inherited from class org.rhq.enterprise.gui.common.servlet.ParameterizedServlet

invalidParamErr, invalidParamErr, invalidParamWarn, invalidParamWarn, invalidParamWarn, invalidParamWarn, invalidParamWarn, parseBooleanParameter, parseDoubleParameter, parseEnumParameter, parseIntParameter, parseLongParameter, parseRequiredBooleanParameter, parseRequiredDoubleParameter, parseRequiredIntParameter, parseRequiredLongParameter, parseRequiredStringParameter, parseRequiredStringParameter, parseStringParameter, parseStringParameter, requiredParamErr

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doHead, doOptions, doPost, 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

PERF_CHART_TYPE_PARAM

public static final String PERF_CHART_TYPE_PARAM

Request parameter for performance chart type.

See Also:

Constant Field Values

CHART_TYPE_URL

public static final String CHART_TYPE_URL

Request parameter value representing a url perfchart.

See Also:

Constant Field Values

CHART_TYPE_URLDETAIL

public static final String CHART_TYPE_URLDETAIL

Request parameter value representing a urldetail perf chart.

See Also:

Constant Field Values

CHART_TYPE_TYPE

public static final String CHART_TYPE_TYPE

Request parameter value representing an type perf chart.

See Also:

Constant Field Values

Constructor Detail

PerformanceChartServlet

public PerformanceChartServlet()

Method Detail

parseParameters

protected void parseParameters(javax.servlet.http.HttpServletRequest request)

This method will be called automatically by the ChartServlet. It should handle the parsing and error-checking of any specific parameters for the chart being rendered.

Handles parsing of perfChartType request parameter.

Overrides:

parseParameters in class ChartServlet

Parameters:

request - the HTTP request object

createChart

protected Chart createChart()

Create and return the chart. This method will be called after the parameters have been parsed.

Specified by:

createChart in class ChartServlet

Returns:

the newly created chart

plotData

protected void plotData(javax.servlet.http.HttpServletRequest request,
            Chart chart)
                 throws javax.servlet.ServletException

This method will be called automatically by the ChartServlet. It should handle adding data to the chart, setting up the X and Y axis labels, etc.

Specified by:

plotData in class ChartServlet

Parameters:

request - the HTTP request object

Throws:

javax.servlet.ServletException

getDefaultImageHeight

protected int getDefaultImageHeight()

Return the default imageHeight.

Overrides:

getDefaultImageHeight in class ChartServlet

getDefaultImageWidth

protected int getDefaultImageWidth()

Return the default imageWidth.

Overrides:

getDefaultImageWidth in class ChartServlet

getPerfChartType

public String getPerfChartType()

setPerfChartType

public void setPerfChartType(String type)

getNumCharts

public int getNumCharts()

setNumCharts

public void setNumCharts(int size)

isTypeChart

public boolean isTypeChart()

isUrlChart

public boolean isUrlChart()

isUrlDetailChart

public boolean isUrlDetailChart()